Add most of libsec.
diff --git a/src/libsec/port/blowfish.c b/src/libsec/port/blowfish.c
new file mode 100644
index 0000000..5dcc677
--- /dev/null
+++ b/src/libsec/port/blowfish.c
@@ -0,0 +1,579 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+// Blowfish block cipher. See:
+// Lecture Notes in Computer Science 809
+// Fast Software Encryption
+// Cambridge Security Workshop, Cambridge, England (1993)
+
+static u32int sbox[1024];
+static u32int pbox[BFrounds+2];
+
+static void bfencrypt(u32int *, BFstate *);
+static void bfdecrypt(u32int *, BFstate *);
+
+void
+setupBFstate(BFstate *s, uchar key[], int keybytes, uchar *ivec)
+{
+ int i, j;
+ u32int n, buf[2];
+
+ memset(s, 0, sizeof(*s));
+ memset(buf, 0, sizeof buf);
+
+ if (keybytes > sizeof(s->key))
+ keybytes = sizeof(s->key);
+
+ memmove(s->key, key, keybytes);
+
+ if (ivec != nil)
+ memmove(s->ivec, ivec, sizeof(s->ivec));
+ else
+ memset(s->ivec, 0, sizeof(s->ivec));
+
+ memmove(s->pbox, pbox, sizeof(pbox));
+ memmove(s->sbox, sbox, sizeof(sbox));
+
+ if (keybytes > 4*(BFrounds + 2))
+ keybytes = 4*(BFrounds + 2);
+
+ for(i=j=0; i < BFrounds+2; i++) {
+ n = key[j];
+ j = (j+1) % keybytes;
+
+ n <<= 8;
+ n |= key[j];
+ j = (j+1) % keybytes;
+
+ n <<= 8;
+ n |= key[j];
+ j = (j+1) % keybytes;
+
+ n <<= 8;
+ n |= key[j];
+ j = (j+1) % keybytes;
+
+ s->pbox[i] ^= n;
+ }
+
+ for(i=0; i < BFrounds+2; i += 2) {
+ bfencrypt(buf, s);
+ s->pbox[i] = buf[0];
+ s->pbox[i+1] = buf[1];
+ }
+
+ for(i=0; i < 1024; i += 2) {
+ bfencrypt(buf, s);
+ s->sbox[i] = buf[0];
+ s->sbox[i+1] = buf[1];
+ }
+
+ s->setup = 0xcafebabe;
+}
+
+void
+bfCBCencrypt(uchar *buf, int n, BFstate *s)
+{
+ int i;
+ uchar *p;
+ u32int bo[2], bi[2], b;
+
+ assert((n & 7) == 0);
+
+ bo[0] = s->ivec[0] | ((u32int) s->ivec[1]<<8) | ((u32int)s->ivec[2]<<16) | ((u32int)s->ivec[3]<<24);
+ bo[1] = s->ivec[4] | ((u32int) s->ivec[5]<<8) | ((u32int)s->ivec[6]<<16) | ((u32int)s->ivec[7]<<24);
+
+ for(i=0; i < n; i += 8, buf += 8) {
+ bi[0] = buf[0] | ((u32int) buf[1]<<8) | ((u32int)buf[2]<<16) | ((u32int)buf[3]<<24);
+ bi[1] = buf[4] | ((u32int) buf[5]<<8) | ((u32int)buf[6]<<16) | ((u32int)buf[7]<<24);
+
+ bi[0] ^= bo[0];
+ bi[1] ^= bo[1];
+
+ bfencrypt(bi, s);
+
+ bo[0] = bi[0];
+ bo[1] = bi[1];
+
+ p = buf;
+ b = bo[0];
+ *p++ = b;
+ b >>= 8;
+ *p++ = b;
+ b >>= 8;
+ *p++ = b;
+ b >>= 8;
+ *p++ = b;
+
+ b = bo[1];
+ *p++ = b;
+ b >>= 8;
+ *p++ = b;
+ b >>= 8;
+ *p++ = b;
+ b >>= 8;
+ *p = b;
+ }
+
+ s->ivec[7] = bo[1] >> 24;
+ s->ivec[6] = bo[1] >> 16;
+ s->ivec[5] = bo[1] >> 8;
+ s->ivec[4] = bo[1];
+
+ s->ivec[3] = bo[0] >> 24;
+ s->ivec[2] = bo[0] >> 16;
+ s->ivec[1] = bo[0] >> 8;
+ s->ivec[0] = bo[0];
+
+ return;
+}
+
+void
+bfCBCdecrypt(uchar *buf, int n, BFstate *s)
+{
+ int i;
+ uchar *p;
+ u32int b, bo[2], bi[2], xr[2];
+
+ assert((n & 7) == 0);
+
+ bo[0] = s->ivec[0] | ((u32int) s->ivec[1]<<8) | ((u32int)s->ivec[2]<<16) | ((u32int)s->ivec[3]<<24);
+ bo[1] = s->ivec[4] | ((u32int) s->ivec[5]<<8) | ((u32int)s->ivec[6]<<16) | ((u32int)s->ivec[7]<<24);
+
+ for(i=0; i < n; i += 8, buf += 8) {
+ bi[0] = buf[0] | ((u32int) buf[1]<<8) | ((u32int)buf[2]<<16) | ((u32int)buf[3]<<24);
+ bi[1] = buf[4] | ((u32int) buf[5]<<8) | ((u32int)buf[6]<<16) | ((u32int)buf[7]<<24);
+
+ xr[0] = bi[0];
+ xr[1] = bi[1];
+
+ bfdecrypt(bi, s);
+
+ bo[0] ^= bi[0];
+ bo[1] ^= bi[1];
+
+ p = buf;
+ b = bo[0];
+ *p++ = b;
+ b >>= 8;
+ *p++ = b;
+ b >>= 8;
+ *p++ = b;
+ b >>= 8;
+ *p++ = b;
+
+ b = bo[1];
+ *p++ = b;
+ b >>= 8;
+ *p++ = b;
+ b >>= 8;
+ *p++ = b;
+ b >>= 8;
+ *p = b;
+
+ bo[0] = xr[0];
+ bo[1] = xr[1];
+ }
+
+ s->ivec[7] = bo[1] >> 24;
+ s->ivec[6] = bo[1] >> 16;
+ s->ivec[5] = bo[1] >> 8;
+ s->ivec[4] = bo[1];
+
+ s->ivec[3] = bo[0] >> 24;
+ s->ivec[2] = bo[0] >> 16;
+ s->ivec[1] = bo[0] >> 8;
+ s->ivec[0] = bo[0];
+
+ return;
+}
+
+void
+bfECBencrypt(uchar *buf, int n, BFstate *s)
+{
+ int i;
+ u32int b[2];
+
+ for(i=0; i < n; i += 8, buf += 8) {
+ b[0] = buf[0] | ((u32int) buf[1]<<8) | ((u32int)buf[2]<<16) | ((u32int)buf[3]<<24);
+ b[1] = buf[4] | ((u32int) buf[5]<<8) | ((u32int)buf[6]<<16) | ((u32int)buf[7]<<24);
+
+ bfencrypt(b, s);
+
+ buf[7] = b[1] >> 24;
+ buf[6] = b[1] >> 16;
+ buf[5] = b[1] >> 8;
+ buf[4] = b[1];
+
+ buf[3] = b[0] >> 24;
+ buf[2] = b[0] >> 16;
+ buf[1] = b[0] >> 8;
+ buf[0] = b[0];
+ }
+
+ return;
+}
+
+void
+bfECBdecrypt(uchar *buf, int n, BFstate *s)
+{
+ int i;
+ u32int b[2];
+
+ for(i=0; i < n; i += 8, buf += 8) {
+ b[0] = buf[0] | ((u32int) buf[1]<<8) | ((u32int)buf[2]<<16) | ((u32int)buf[3]<<24);
+ b[1] = buf[4] | ((u32int) buf[5]<<8) | ((u32int)buf[6]<<16) | ((u32int)buf[7]<<24);
+
+ bfdecrypt(b, s);
+
+ buf[7] = b[1] >> 24;
+ buf[6] = b[1] >> 16;
+ buf[5] = b[1] >> 8;
+ buf[4] = b[1];
+
+ buf[3] = b[0] >> 24;
+ buf[2] = b[0] >> 16;
+ buf[1] = b[0] >> 8;
+ buf[0] = b[0];
+ }
+
+ return;
+}
+
+static void
+bfencrypt(u32int *b, BFstate *s)
+{
+ int i;
+ u32int l, r;
+ u32int *pb, *sb;
+
+ l = b[0];
+ r = b[1];
+
+ pb = s->pbox;
+ sb = s->sbox;
+
+ l ^= pb[0];
+
+ for(i=1; i<16; i += 2) {
+ r ^= pb[i];
+ r ^= ( (sb[ (uchar) (l>>24)] + sb[256 + ((uchar) (l>>16))]) ^
+ sb[512 + ((uchar) (l>>8))]) + sb[768 +((uchar) l)];
+
+ l ^= pb[i+1];
+ l ^= ( (sb[ (uchar) (r>>24)] + sb[256 + ((uchar) (r>>16))]) ^
+ sb[512 + ((uchar) (r>>8))]) + sb[768 +((uchar) r)];
+ }
+
+ r ^= pb[BFrounds+1];
+
+ /* sic */
+ b[0] = r;
+ b[1] = l;
+
+ return;
+}
+
+static void
+bfdecrypt(u32int *b, BFstate *s)
+{
+ int i;
+ u32int l, r;
+ u32int *pb, *sb;
+
+ l = b[0];
+ r = b[1];
+
+ pb = s->pbox;
+ sb = s->sbox;
+
+ l ^= pb[BFrounds+1];
+
+ for(i=16; i > 0; i -= 2) {
+ r ^= pb[i];
+ r ^= ( (sb[ (uchar) (l>>24)] + sb[256 + ((uchar) (l>>16))]) ^
+ sb[512 + ((uchar) (l>>8))]) + sb[768 +((uchar) l)];
+
+ l ^= pb[i-1];
+ l ^= ( (sb[ (uchar) (r>>24)] + sb[256 + ((uchar) (r>>16))]) ^
+ sb[512 + ((uchar) (r>>8))]) + sb[768 +((uchar) r)];
+ }
+
+ r ^= pb[0];
+
+ /* sic */
+ b[0] = r;
+ b[1] = l;
+
+ return;
+}
+
+static u32int pbox[BFrounds+2] = {
+ 0x243f6a88, 0x85a308d3, 0x13198a2e, 0x03707344,
+ 0xa4093822, 0x299f31d0, 0x082efa98, 0xec4e6c89,
+ 0x452821e6, 0x38d01377, 0xbe5466cf, 0x34e90c6c,
+ 0xc0ac29b7, 0xc97c50dd, 0x3f84d5b5, 0xb5470917,
+ 0x9216d5d9, 0x8979fb1b
+};
+
+static u32int sbox[1024] = {
+ 0xd1310ba6L, 0x98dfb5acL, 0x2ffd72dbL, 0xd01adfb7L,
+ 0xb8e1afedL, 0x6a267e96L, 0xba7c9045L, 0xf12c7f99L,
+ 0x24a19947L, 0xb3916cf7L, 0x0801f2e2L, 0x858efc16L,
+ 0x636920d8L, 0x71574e69L, 0xa458fea3L, 0xf4933d7eL,
+ 0x0d95748fL, 0x728eb658L, 0x718bcd58L, 0x82154aeeL,
+ 0x7b54a41dL, 0xc25a59b5L, 0x9c30d539L, 0x2af26013L,
+ 0xc5d1b023L, 0x286085f0L, 0xca417918L, 0xb8db38efL,
+ 0x8e79dcb0L, 0x603a180eL, 0x6c9e0e8bL, 0xb01e8a3eL,
+ 0xd71577c1L, 0xbd314b27L, 0x78af2fdaL, 0x55605c60L,
+ 0xe65525f3L, 0xaa55ab94L, 0x57489862L, 0x63e81440L,
+ 0x55ca396aL, 0x2aab10b6L, 0xb4cc5c34L, 0x1141e8ceL,
+ 0xa15486afL, 0x7c72e993L, 0xb3ee1411L, 0x636fbc2aL,
+ 0x2ba9c55dL, 0x741831f6L, 0xce5c3e16L, 0x9b87931eL,
+ 0xafd6ba33L, 0x6c24cf5cL, 0x7a325381L, 0x28958677L,
+ 0x3b8f4898L, 0x6b4bb9afL, 0xc4bfe81bL, 0x66282193L,
+ 0x61d809ccL, 0xfb21a991L, 0x487cac60L, 0x5dec8032L,
+ 0xef845d5dL, 0xe98575b1L, 0xdc262302L, 0xeb651b88L,
+ 0x23893e81L, 0xd396acc5L, 0x0f6d6ff3L, 0x83f44239L,
+ 0x2e0b4482L, 0xa4842004L, 0x69c8f04aL, 0x9e1f9b5eL,
+ 0x21c66842L, 0xf6e96c9aL, 0x670c9c61L, 0xabd388f0L,
+ 0x6a51a0d2L, 0xd8542f68L, 0x960fa728L, 0xab5133a3L,
+ 0x6eef0b6cL, 0x137a3be4L, 0xba3bf050L, 0x7efb2a98L,
+ 0xa1f1651dL, 0x39af0176L, 0x66ca593eL, 0x82430e88L,
+ 0x8cee8619L, 0x456f9fb4L, 0x7d84a5c3L, 0x3b8b5ebeL,
+ 0xe06f75d8L, 0x85c12073L, 0x401a449fL, 0x56c16aa6L,
+ 0x4ed3aa62L, 0x363f7706L, 0x1bfedf72L, 0x429b023dL,
+ 0x37d0d724L, 0xd00a1248L, 0xdb0fead3L, 0x49f1c09bL,
+ 0x075372c9L, 0x80991b7bL, 0x25d479d8L, 0xf6e8def7L,
+ 0xe3fe501aL, 0xb6794c3bL, 0x976ce0bdL, 0x04c006baL,
+ 0xc1a94fb6L, 0x409f60c4L, 0x5e5c9ec2L, 0x196a2463L,
+ 0x68fb6fafL, 0x3e6c53b5L, 0x1339b2ebL, 0x3b52ec6fL,
+ 0x6dfc511fL, 0x9b30952cL, 0xcc814544L, 0xaf5ebd09L,
+ 0xbee3d004L, 0xde334afdL, 0x660f2807L, 0x192e4bb3L,
+ 0xc0cba857L, 0x45c8740fL, 0xd20b5f39L, 0xb9d3fbdbL,
+ 0x5579c0bdL, 0x1a60320aL, 0xd6a100c6L, 0x402c7279L,
+ 0x679f25feL, 0xfb1fa3ccL, 0x8ea5e9f8L, 0xdb3222f8L,
+ 0x3c7516dfL, 0xfd616b15L, 0x2f501ec8L, 0xad0552abL,
+ 0x323db5faL, 0xfd238760L, 0x53317b48L, 0x3e00df82L,
+ 0x9e5c57bbL, 0xca6f8ca0L, 0x1a87562eL, 0xdf1769dbL,
+ 0xd542a8f6L, 0x287effc3L, 0xac6732c6L, 0x8c4f5573L,
+ 0x695b27b0L, 0xbbca58c8L, 0xe1ffa35dL, 0xb8f011a0L,
+ 0x10fa3d98L, 0xfd2183b8L, 0x4afcb56cL, 0x2dd1d35bL,
+ 0x9a53e479L, 0xb6f84565L, 0xd28e49bcL, 0x4bfb9790L,
+ 0xe1ddf2daL, 0xa4cb7e33L, 0x62fb1341L, 0xcee4c6e8L,
+ 0xef20cadaL, 0x36774c01L, 0xd07e9efeL, 0x2bf11fb4L,
+ 0x95dbda4dL, 0xae909198L, 0xeaad8e71L, 0x6b93d5a0L,
+ 0xd08ed1d0L, 0xafc725e0L, 0x8e3c5b2fL, 0x8e7594b7L,
+ 0x8ff6e2fbL, 0xf2122b64L, 0x8888b812L, 0x900df01cL,
+ 0x4fad5ea0L, 0x688fc31cL, 0xd1cff191L, 0xb3a8c1adL,
+ 0x2f2f2218L, 0xbe0e1777L, 0xea752dfeL, 0x8b021fa1L,
+ 0xe5a0cc0fL, 0xb56f74e8L, 0x18acf3d6L, 0xce89e299L,
+ 0xb4a84fe0L, 0xfd13e0b7L, 0x7cc43b81L, 0xd2ada8d9L,
+ 0x165fa266L, 0x80957705L, 0x93cc7314L, 0x211a1477L,
+ 0xe6ad2065L, 0x77b5fa86L, 0xc75442f5L, 0xfb9d35cfL,
+ 0xebcdaf0cL, 0x7b3e89a0L, 0xd6411bd3L, 0xae1e7e49L,
+ 0x00250e2dL, 0x2071b35eL, 0x226800bbL, 0x57b8e0afL,
+ 0x2464369bL, 0xf009b91eL, 0x5563911dL, 0x59dfa6aaL,
+ 0x78c14389L, 0xd95a537fL, 0x207d5ba2L, 0x02e5b9c5L,
+ 0x83260376L, 0x6295cfa9L, 0x11c81968L, 0x4e734a41L,
+ 0xb3472dcaL, 0x7b14a94aL, 0x1b510052L, 0x9a532915L,
+ 0xd60f573fL, 0xbc9bc6e4L, 0x2b60a476L, 0x81e67400L,
+ 0x08ba6fb5L, 0x571be91fL, 0xf296ec6bL, 0x2a0dd915L,
+ 0xb6636521L, 0xe7b9f9b6L, 0xff34052eL, 0xc5855664L,
+ 0x53b02d5dL, 0xa99f8fa1L, 0x08ba4799L, 0x6e85076aL,
+ 0x4b7a70e9L, 0xb5b32944L, 0xdb75092eL, 0xc4192623L,
+ 0xad6ea6b0L, 0x49a7df7dL, 0x9cee60b8L, 0x8fedb266L,
+ 0xecaa8c71L, 0x699a17ffL, 0x5664526cL, 0xc2b19ee1L,
+ 0x193602a5L, 0x75094c29L, 0xa0591340L, 0xe4183a3eL,
+ 0x3f54989aL, 0x5b429d65L, 0x6b8fe4d6L, 0x99f73fd6L,
+ 0xa1d29c07L, 0xefe830f5L, 0x4d2d38e6L, 0xf0255dc1L,
+ 0x4cdd2086L, 0x8470eb26L, 0x6382e9c6L, 0x021ecc5eL,
+ 0x09686b3fL, 0x3ebaefc9L, 0x3c971814L, 0x6b6a70a1L,
+ 0x687f3584L, 0x52a0e286L, 0xb79c5305L, 0xaa500737L,
+ 0x3e07841cL, 0x7fdeae5cL, 0x8e7d44ecL, 0x5716f2b8L,
+ 0xb03ada37L, 0xf0500c0dL, 0xf01c1f04L, 0x0200b3ffL,
+ 0xae0cf51aL, 0x3cb574b2L, 0x25837a58L, 0xdc0921bdL,
+ 0xd19113f9L, 0x7ca92ff6L, 0x94324773L, 0x22f54701L,
+ 0x3ae5e581L, 0x37c2dadcL, 0xc8b57634L, 0x9af3dda7L,
+ 0xa9446146L, 0x0fd0030eL, 0xecc8c73eL, 0xa4751e41L,
+ 0xe238cd99L, 0x3bea0e2fL, 0x3280bba1L, 0x183eb331L,
+ 0x4e548b38L, 0x4f6db908L, 0x6f420d03L, 0xf60a04bfL,
+ 0x2cb81290L, 0x24977c79L, 0x5679b072L, 0xbcaf89afL,
+ 0xde9a771fL, 0xd9930810L, 0xb38bae12L, 0xdccf3f2eL,
+ 0x5512721fL, 0x2e6b7124L, 0x501adde6L, 0x9f84cd87L,
+ 0x7a584718L, 0x7408da17L, 0xbc9f9abcL, 0xe94b7d8cL,
+ 0xec7aec3aL, 0xdb851dfaL, 0x63094366L, 0xc464c3d2L,
+ 0xef1c1847L, 0x3215d908L, 0xdd433b37L, 0x24c2ba16L,
+ 0x12a14d43L, 0x2a65c451L, 0x50940002L, 0x133ae4ddL,
+ 0x71dff89eL, 0x10314e55L, 0x81ac77d6L, 0x5f11199bL,
+ 0x043556f1L, 0xd7a3c76bL, 0x3c11183bL, 0x5924a509L,
+ 0xf28fe6edL, 0x97f1fbfaL, 0x9ebabf2cL, 0x1e153c6eL,
+ 0x86e34570L, 0xeae96fb1L, 0x860e5e0aL, 0x5a3e2ab3L,
+ 0x771fe71cL, 0x4e3d06faL, 0x2965dcb9L, 0x99e71d0fL,
+ 0x803e89d6L, 0x5266c825L, 0x2e4cc978L, 0x9c10b36aL,
+ 0xc6150ebaL, 0x94e2ea78L, 0xa5fc3c53L, 0x1e0a2df4L,
+ 0xf2f74ea7L, 0x361d2b3dL, 0x1939260fL, 0x19c27960L,
+ 0x5223a708L, 0xf71312b6L, 0xebadfe6eL, 0xeac31f66L,
+ 0xe3bc4595L, 0xa67bc883L, 0xb17f37d1L, 0x018cff28L,
+ 0xc332ddefL, 0xbe6c5aa5L, 0x65582185L, 0x68ab9802L,
+ 0xeecea50fL, 0xdb2f953bL, 0x2aef7dadL, 0x5b6e2f84L,
+ 0x1521b628L, 0x29076170L, 0xecdd4775L, 0x619f1510L,
+ 0x13cca830L, 0xeb61bd96L, 0x0334fe1eL, 0xaa0363cfL,
+ 0xb5735c90L, 0x4c70a239L, 0xd59e9e0bL, 0xcbaade14L,
+ 0xeecc86bcL, 0x60622ca7L, 0x9cab5cabL, 0xb2f3846eL,
+ 0x648b1eafL, 0x19bdf0caL, 0xa02369b9L, 0x655abb50L,
+ 0x40685a32L, 0x3c2ab4b3L, 0x319ee9d5L, 0xc021b8f7L,
+ 0x9b540b19L, 0x875fa099L, 0x95f7997eL, 0x623d7da8L,
+ 0xf837889aL, 0x97e32d77L, 0x11ed935fL, 0x16681281L,
+ 0x0e358829L, 0xc7e61fd6L, 0x96dedfa1L, 0x7858ba99L,
+ 0x57f584a5L, 0x1b227263L, 0x9b83c3ffL, 0x1ac24696L,
+ 0xcdb30aebL, 0x532e3054L, 0x8fd948e4L, 0x6dbc3128L,
+ 0x58ebf2efL, 0x34c6ffeaL, 0xfe28ed61L, 0xee7c3c73L,
+ 0x5d4a14d9L, 0xe864b7e3L, 0x42105d14L, 0x203e13e0L,
+ 0x45eee2b6L, 0xa3aaabeaL, 0xdb6c4f15L, 0xfacb4fd0L,
+ 0xc742f442L, 0xef6abbb5L, 0x654f3b1dL, 0x41cd2105L,
+ 0xd81e799eL, 0x86854dc7L, 0xe44b476aL, 0x3d816250L,
+ 0xcf62a1f2L, 0x5b8d2646L, 0xfc8883a0L, 0xc1c7b6a3L,
+ 0x7f1524c3L, 0x69cb7492L, 0x47848a0bL, 0x5692b285L,
+ 0x095bbf00L, 0xad19489dL, 0x1462b174L, 0x23820e00L,
+ 0x58428d2aL, 0x0c55f5eaL, 0x1dadf43eL, 0x233f7061L,
+ 0x3372f092L, 0x8d937e41L, 0xd65fecf1L, 0x6c223bdbL,
+ 0x7cde3759L, 0xcbee7460L, 0x4085f2a7L, 0xce77326eL,
+ 0xa6078084L, 0x19f8509eL, 0xe8efd855L, 0x61d99735L,
+ 0xa969a7aaL, 0xc50c06c2L, 0x5a04abfcL, 0x800bcadcL,
+ 0x9e447a2eL, 0xc3453484L, 0xfdd56705L, 0x0e1e9ec9L,
+ 0xdb73dbd3L, 0x105588cdL, 0x675fda79L, 0xe3674340L,
+ 0xc5c43465L, 0x713e38d8L, 0x3d28f89eL, 0xf16dff20L,
+ 0x153e21e7L, 0x8fb03d4aL, 0xe6e39f2bL, 0xdb83adf7L,
+ 0xe93d5a68L, 0x948140f7L, 0xf64c261cL, 0x94692934L,
+ 0x411520f7L, 0x7602d4f7L, 0xbcf46b2eL, 0xd4a20068L,
+ 0xd4082471L, 0x3320f46aL, 0x43b7d4b7L, 0x500061afL,
+ 0x1e39f62eL, 0x97244546L, 0x14214f74L, 0xbf8b8840L,
+ 0x4d95fc1dL, 0x96b591afL, 0x70f4ddd3L, 0x66a02f45L,
+ 0xbfbc09ecL, 0x03bd9785L, 0x7fac6dd0L, 0x31cb8504L,
+ 0x96eb27b3L, 0x55fd3941L, 0xda2547e6L, 0xabca0a9aL,
+ 0x28507825L, 0x530429f4L, 0x0a2c86daL, 0xe9b66dfbL,
+ 0x68dc1462L, 0xd7486900L, 0x680ec0a4L, 0x27a18deeL,
+ 0x4f3ffea2L, 0xe887ad8cL, 0xb58ce006L, 0x7af4d6b6L,
+ 0xaace1e7cL, 0xd3375fecL, 0xce78a399L, 0x406b2a42L,
+ 0x20fe9e35L, 0xd9f385b9L, 0xee39d7abL, 0x3b124e8bL,
+ 0x1dc9faf7L, 0x4b6d1856L, 0x26a36631L, 0xeae397b2L,
+ 0x3a6efa74L, 0xdd5b4332L, 0x6841e7f7L, 0xca7820fbL,
+ 0xfb0af54eL, 0xd8feb397L, 0x454056acL, 0xba489527L,
+ 0x55533a3aL, 0x20838d87L, 0xfe6ba9b7L, 0xd096954bL,
+ 0x55a867bcL, 0xa1159a58L, 0xcca92963L, 0x99e1db33L,
+ 0xa62a4a56L, 0x3f3125f9L, 0x5ef47e1cL, 0x9029317cL,
+ 0xfdf8e802L, 0x04272f70L, 0x80bb155cL, 0x05282ce3L,
+ 0x95c11548L, 0xe4c66d22L, 0x48c1133fL, 0xc70f86dcL,
+ 0x07f9c9eeL, 0x41041f0fL, 0x404779a4L, 0x5d886e17L,
+ 0x325f51ebL, 0xd59bc0d1L, 0xf2bcc18fL, 0x41113564L,
+ 0x257b7834L, 0x602a9c60L, 0xdff8e8a3L, 0x1f636c1bL,
+ 0x0e12b4c2L, 0x02e1329eL, 0xaf664fd1L, 0xcad18115L,
+ 0x6b2395e0L, 0x333e92e1L, 0x3b240b62L, 0xeebeb922L,
+ 0x85b2a20eL, 0xe6ba0d99L, 0xde720c8cL, 0x2da2f728L,
+ 0xd0127845L, 0x95b794fdL, 0x647d0862L, 0xe7ccf5f0L,
+ 0x5449a36fL, 0x877d48faL, 0xc39dfd27L, 0xf33e8d1eL,
+ 0x0a476341L, 0x992eff74L, 0x3a6f6eabL, 0xf4f8fd37L,
+ 0xa812dc60L, 0xa1ebddf8L, 0x991be14cL, 0xdb6e6b0dL,
+ 0xc67b5510L, 0x6d672c37L, 0x2765d43bL, 0xdcd0e804L,
+ 0xf1290dc7L, 0xcc00ffa3L, 0xb5390f92L, 0x690fed0bL,
+ 0x667b9ffbL, 0xcedb7d9cL, 0xa091cf0bL, 0xd9155ea3L,
+ 0xbb132f88L, 0x515bad24L, 0x7b9479bfL, 0x763bd6ebL,
+ 0x37392eb3L, 0xcc115979L, 0x8026e297L, 0xf42e312dL,
+ 0x6842ada7L, 0xc66a2b3bL, 0x12754cccL, 0x782ef11cL,
+ 0x6a124237L, 0xb79251e7L, 0x06a1bbe6L, 0x4bfb6350L,
+ 0x1a6b1018L, 0x11caedfaL, 0x3d25bdd8L, 0xe2e1c3c9L,
+ 0x44421659L, 0x0a121386L, 0xd90cec6eL, 0xd5abea2aL,
+ 0x64af674eL, 0xda86a85fL, 0xbebfe988L, 0x64e4c3feL,
+ 0x9dbc8057L, 0xf0f7c086L, 0x60787bf8L, 0x6003604dL,
+ 0xd1fd8346L, 0xf6381fb0L, 0x7745ae04L, 0xd736fcccL,
+ 0x83426b33L, 0xf01eab71L, 0xb0804187L, 0x3c005e5fL,
+ 0x77a057beL, 0xbde8ae24L, 0x55464299L, 0xbf582e61L,
+ 0x4e58f48fL, 0xf2ddfda2L, 0xf474ef38L, 0x8789bdc2L,
+ 0x5366f9c3L, 0xc8b38e74L, 0xb475f255L, 0x46fcd9b9L,
+ 0x7aeb2661L, 0x8b1ddf84L, 0x846a0e79L, 0x915f95e2L,
+ 0x466e598eL, 0x20b45770L, 0x8cd55591L, 0xc902de4cL,
+ 0xb90bace1L, 0xbb8205d0L, 0x11a86248L, 0x7574a99eL,
+ 0xb77f19b6L, 0xe0a9dc09L, 0x662d09a1L, 0xc4324633L,
+ 0xe85a1f02L, 0x09f0be8cL, 0x4a99a025L, 0x1d6efe10L,
+ 0x1ab93d1dL, 0x0ba5a4dfL, 0xa186f20fL, 0x2868f169L,
+ 0xdcb7da83L, 0x573906feL, 0xa1e2ce9bL, 0x4fcd7f52L,
+ 0x50115e01L, 0xa70683faL, 0xa002b5c4L, 0x0de6d027L,
+ 0x9af88c27L, 0x773f8641L, 0xc3604c06L, 0x61a806b5L,
+ 0xf0177a28L, 0xc0f586e0L, 0x006058aaL, 0x30dc7d62L,
+ 0x11e69ed7L, 0x2338ea63L, 0x53c2dd94L, 0xc2c21634L,
+ 0xbbcbee56L, 0x90bcb6deL, 0xebfc7da1L, 0xce591d76L,
+ 0x6f05e409L, 0x4b7c0188L, 0x39720a3dL, 0x7c927c24L,
+ 0x86e3725fL, 0x724d9db9L, 0x1ac15bb4L, 0xd39eb8fcL,
+ 0xed545578L, 0x08fca5b5L, 0xd83d7cd3L, 0x4dad0fc4L,
+ 0x1e50ef5eL, 0xb161e6f8L, 0xa28514d9L, 0x6c51133cL,
+ 0x6fd5c7e7L, 0x56e14ec4L, 0x362abfceL, 0xddc6c837L,
+ 0xd79a3234L, 0x92638212L, 0x670efa8eL, 0x406000e0L,
+ 0x3a39ce37L, 0xd3faf5cfL, 0xabc27737L, 0x5ac52d1bL,
+ 0x5cb0679eL, 0x4fa33742L, 0xd3822740L, 0x99bc9bbeL,
+ 0xd5118e9dL, 0xbf0f7315L, 0xd62d1c7eL, 0xc700c47bL,
+ 0xb78c1b6bL, 0x21a19045L, 0xb26eb1beL, 0x6a366eb4L,
+ 0x5748ab2fL, 0xbc946e79L, 0xc6a376d2L, 0x6549c2c8L,
+ 0x530ff8eeL, 0x468dde7dL, 0xd5730a1dL, 0x4cd04dc6L,
+ 0x2939bbdbL, 0xa9ba4650L, 0xac9526e8L, 0xbe5ee304L,
+ 0xa1fad5f0L, 0x6a2d519aL, 0x63ef8ce2L, 0x9a86ee22L,
+ 0xc089c2b8L, 0x43242ef6L, 0xa51e03aaL, 0x9cf2d0a4L,
+ 0x83c061baL, 0x9be96a4dL, 0x8fe51550L, 0xba645bd6L,
+ 0x2826a2f9L, 0xa73a3ae1L, 0x4ba99586L, 0xef5562e9L,
+ 0xc72fefd3L, 0xf752f7daL, 0x3f046f69L, 0x77fa0a59L,
+ 0x80e4a915L, 0x87b08601L, 0x9b09e6adL, 0x3b3ee593L,
+ 0xe990fd5aL, 0x9e34d797L, 0x2cf0b7d9L, 0x022b8b51L,
+ 0x96d5ac3aL, 0x017da67dL, 0xd1cf3ed6L, 0x7c7d2d28L,
+ 0x1f9f25cfL, 0xadf2b89bL, 0x5ad6b472L, 0x5a88f54cL,
+ 0xe029ac71L, 0xe019a5e6L, 0x47b0acfdL, 0xed93fa9bL,
+ 0xe8d3c48dL, 0x283b57ccL, 0xf8d56629L, 0x79132e28L,
+ 0x785f0191L, 0xed756055L, 0xf7960e44L, 0xe3d35e8cL,
+ 0x15056dd4L, 0x88f46dbaL, 0x03a16125L, 0x0564f0bdL,
+ 0xc3eb9e15L, 0x3c9057a2L, 0x97271aecL, 0xa93a072aL,
+ 0x1b3f6d9bL, 0x1e6321f5L, 0xf59c66fbL, 0x26dcf319L,
+ 0x7533d928L, 0xb155fdf5L, 0x03563482L, 0x8aba3cbbL,
+ 0x28517711L, 0xc20ad9f8L, 0xabcc5167L, 0xccad925fL,
+ 0x4de81751L, 0x3830dc8eL, 0x379d5862L, 0x9320f991L,
+ 0xea7a90c2L, 0xfb3e7bceL, 0x5121ce64L, 0x774fbe32L,
+ 0xa8b6e37eL, 0xc3293d46L, 0x48de5369L, 0x6413e680L,
+ 0xa2ae0810L, 0xdd6db224L, 0x69852dfdL, 0x09072166L,
+ 0xb39a460aL, 0x6445c0ddL, 0x586cdecfL, 0x1c20c8aeL,
+ 0x5bbef7ddL, 0x1b588d40L, 0xccd2017fL, 0x6bb4e3bbL,
+ 0xdda26a7eL, 0x3a59ff45L, 0x3e350a44L, 0xbcb4cdd5L,
+ 0x72eacea8L, 0xfa6484bbL, 0x8d6612aeL, 0xbf3c6f47L,
+ 0xd29be463L, 0x542f5d9eL, 0xaec2771bL, 0xf64e6370L,
+ 0x740e0d8dL, 0xe75b1357L, 0xf8721671L, 0xaf537d5dL,
+ 0x4040cb08L, 0x4eb4e2ccL, 0x34d2466aL, 0x0115af84L,
+ 0xe1b00428L, 0x95983a1dL, 0x06b89fb4L, 0xce6ea048L,
+ 0x6f3f3b82L, 0x3520ab82L, 0x011a1d4bL, 0x277227f8L,
+ 0x611560b1L, 0xe7933fdcL, 0xbb3a792bL, 0x344525bdL,
+ 0xa08839e1L, 0x51ce794bL, 0x2f32c9b7L, 0xa01fbac9L,
+ 0xe01cc87eL, 0xbcc7d1f6L, 0xcf0111c3L, 0xa1e8aac7L,
+ 0x1a908749L, 0xd44fbd9aL, 0xd0dadecbL, 0xd50ada38L,
+ 0x0339c32aL, 0xc6913667L, 0x8df9317cL, 0xe0b12b4fL,
+ 0xf79e59b7L, 0x43f5bb3aL, 0xf2d519ffL, 0x27d9459cL,
+ 0xbf97222cL, 0x15e6fc2aL, 0x0f91fc71L, 0x9b941525L,
+ 0xfae59361L, 0xceb69cebL, 0xc2a86459L, 0x12baa8d1L,
+ 0xb6c1075eL, 0xe3056a0cL, 0x10d25065L, 0xcb03a442L,
+ 0xe0ec6e0eL, 0x1698db3bL, 0x4c98a0beL, 0x3278e964L,
+ 0x9f1f9532L, 0xe0d392dfL, 0xd3a0342bL, 0x8971f21eL,
+ 0x1b0a7441L, 0x4ba3348cL, 0xc5be7120L, 0xc37632d8L,
+ 0xdf359f8dL, 0x9b992f2eL, 0xe60b6f47L, 0x0fe3f11dL,
+ 0xe54cda54L, 0x1edad891L, 0xce6279cfL, 0xcd3e7e6fL,
+ 0x1618b166L, 0xfd2c1d05L, 0x848fd2c5L, 0xf6fb2299L,
+ 0xf523f357L, 0xa6327623L, 0x93a83531L, 0x56cccd02L,
+ 0xacf08162L, 0x5a75ebb5L, 0x6e163697L, 0x88d273ccL,
+ 0xde966292L, 0x81b949d0L, 0x4c50901bL, 0x71c65614L,
+ 0xe6c6c7bdL, 0x327a140aL, 0x45e1d006L, 0xc3f27b9aL,
+ 0xc9aa53fdL, 0x62a80f00L, 0xbb25bfe2L, 0x35bdd2f6L,
+ 0x71126905L, 0xb2040222L, 0xb6cbcf7cL, 0xcd769c2bL,
+ 0x53113ec0L, 0x1640e3d3L, 0x38abbd60L, 0x2547adf0L,
+ 0xba38209cL, 0xf746ce76L, 0x77afa1c5L, 0x20756060L,
+ 0x85cbfe4eL, 0x8ae88dd8L, 0x7aaaf9b0L, 0x4cf9aa7eL,
+ 0x1948c25cL, 0x02fb8a8cL, 0x01c36ae4L, 0xd6ebe1f9L,
+ 0x90d4f869L, 0xa65cdea0L, 0x3f09252dL, 0xc208e69fL,
+ 0xb74e6132L, 0xce77e25bL, 0x578fdfe3L, 0x3ac372e6L,
+};
+
+
diff --git a/src/libsec/port/decodepem.c b/src/libsec/port/decodepem.c
new file mode 100644
index 0000000..194a455
--- /dev/null
+++ b/src/libsec/port/decodepem.c
@@ -0,0 +1,61 @@
+#include <u.h>
+#include <libc.h>
+#include <mp.h>
+#include <libsec.h>
+
+#define STRLEN(s) (sizeof(s)-1)
+
+uchar*
+decodepem(char *s, char *type, int *len)
+{
+ uchar *d;
+ char *t, *e, *tt;
+ int n;
+
+ *len = 0;
+
+ /*
+ * find the correct section of the file, stripping garbage at the beginning and end.
+ * the data is delimited by -----BEGIN <type>-----\n and -----END <type>-----\n
+ */
+ n = strlen(type);
+ e = strchr(s, '\0');
+ for(t = s; t != nil && t < e; ){
+ tt = t;
+ t = strchr(tt, '\n');
+ if(t != nil)
+ t++;
+ if(strncmp(tt, "-----BEGIN ", STRLEN("-----BEGIN ")) == 0
+ && strncmp(&tt[STRLEN("-----BEGIN ")], type, n) == 0
+ && strncmp(&tt[STRLEN("-----BEGIN ")+n], "-----\n", STRLEN("-----\n")) == 0)
+ break;
+ }
+ for(tt = t; tt != nil && tt < e; tt++){
+ if(strncmp(tt, "-----END ", STRLEN("-----END ")) == 0
+ && strncmp(&tt[STRLEN("-----END ")], type, n) == 0
+ && strncmp(&tt[STRLEN("-----END ")+n], "-----\n", STRLEN("-----\n")) == 0)
+ break;
+ tt = strchr(tt, '\n');
+ if(tt == nil)
+ break;
+ }
+ if(tt == nil || tt == e){
+ werrstr("incorrect .pem file format: bad header or trailer");
+ return nil;
+ }
+
+ n = ((tt - t) * 6 + 7) / 8;
+ d = malloc(n);
+ if(d == nil){
+ werrstr("out of memory");
+ return nil;
+ }
+ n = dec64(d, n, t, tt - t);
+ if(n < 0){
+ free(d);
+ werrstr("incorrect .pem file format: bad base64 encoded data");
+ return nil;
+ }
+ *len = n;
+ return d;
+}
diff --git a/src/libsec/port/des3CBC.c b/src/libsec/port/des3CBC.c
new file mode 100644
index 0000000..2632930
--- /dev/null
+++ b/src/libsec/port/des3CBC.c
@@ -0,0 +1,59 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+// Because of the way that non multiple of 8
+// buffers are handled, the decryptor must
+// be fed buffers of the same size as the
+// encryptor
+
+
+// If the length is not a multiple of 8, I encrypt
+// the overflow to be compatible with lacy's cryptlib
+void
+des3CBCencrypt(uchar *p, int len, DES3state *s)
+{
+ uchar *p2, *ip, *eip;
+
+ for(; len >= 8; len -= 8){
+ p2 = p;
+ ip = s->ivec;
+ for(eip = ip+8; ip < eip; )
+ *p2++ ^= *ip++;
+ triple_block_cipher(s->expanded, p, DES3EDE);
+ memmove(s->ivec, p, 8);
+ p += 8;
+ }
+
+ if(len > 0){
+ ip = s->ivec;
+ triple_block_cipher(s->expanded, ip, DES3EDE);
+ for(eip = ip+len; ip < eip; )
+ *p++ ^= *ip++;
+ }
+}
+
+void
+des3CBCdecrypt(uchar *p, int len, DES3state *s)
+{
+ uchar *ip, *eip, *tp;
+ uchar tmp[8];
+
+ for(; len >= 8; len -= 8){
+ memmove(tmp, p, 8);
+ triple_block_cipher(s->expanded, p, DES3DED);
+ tp = tmp;
+ ip = s->ivec;
+ for(eip = ip+8; ip < eip; ){
+ *p++ ^= *ip;
+ *ip++ = *tp++;
+ }
+ }
+
+ if(len > 0){
+ ip = s->ivec;
+ triple_block_cipher(s->expanded, ip, DES3EDE);
+ for(eip = ip+len; ip < eip; )
+ *p++ ^= *ip++;
+ }
+}
diff --git a/src/libsec/port/des3ECB.c b/src/libsec/port/des3ECB.c
new file mode 100644
index 0000000..324254b
--- /dev/null
+++ b/src/libsec/port/des3ECB.c
@@ -0,0 +1,48 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+// I wasn't sure what to do when the buffer was not
+// a multiple of 8. I did what lacy's cryptolib did
+// to be compatible, but it looks dangerous to me
+// since its encrypting plain text with the key. -- presotto
+
+void
+des3ECBencrypt(uchar *p, int len, DES3state *s)
+{
+ int i;
+ uchar tmp[8];
+
+ for(; len >= 8; len -= 8){
+ triple_block_cipher(s->expanded, p, DES3EDE);
+ p += 8;
+ }
+
+ if(len > 0){
+ for (i=0; i<8; i++)
+ tmp[i] = i;
+ triple_block_cipher(s->expanded, tmp, DES3EDE);
+ for (i = 0; i < len; i++)
+ p[i] ^= tmp[i];
+ }
+}
+
+void
+des3ECBdecrypt(uchar *p, int len, DES3state *s)
+{
+ int i;
+ uchar tmp[8];
+
+ for(; len >= 8; len -= 8){
+ triple_block_cipher(s->expanded, p, DES3DED);
+ p += 8;
+ }
+
+ if(len > 0){
+ for (i=0; i<8; i++)
+ tmp[i] = i;
+ triple_block_cipher(s->expanded, tmp, DES3EDE);
+ for (i = 0; i < len; i++)
+ p[i] ^= tmp[i];
+ }
+}
diff --git a/src/libsec/port/desCBC.c b/src/libsec/port/desCBC.c
new file mode 100644
index 0000000..ecee29e
--- /dev/null
+++ b/src/libsec/port/desCBC.c
@@ -0,0 +1,59 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+// Because of the way that non multiple of 8
+// buffers are handled, the decryptor must
+// be fed buffers of the same size as the
+// encryptor
+
+
+// If the length is not a multiple of 8, I encrypt
+// the overflow to be compatible with lacy's cryptlib
+void
+desCBCencrypt(uchar *p, int len, DESstate *s)
+{
+ uchar *p2, *ip, *eip;
+
+ for(; len >= 8; len -= 8){
+ p2 = p;
+ ip = s->ivec;
+ for(eip = ip+8; ip < eip; )
+ *p2++ ^= *ip++;
+ block_cipher(s->expanded, p, 0);
+ memmove(s->ivec, p, 8);
+ p += 8;
+ }
+
+ if(len > 0){
+ ip = s->ivec;
+ block_cipher(s->expanded, ip, 0);
+ for(eip = ip+len; ip < eip; )
+ *p++ ^= *ip++;
+ }
+}
+
+void
+desCBCdecrypt(uchar *p, int len, DESstate *s)
+{
+ uchar *ip, *eip, *tp;
+ uchar tmp[8];
+
+ for(; len >= 8; len -= 8){
+ memmove(tmp, p, 8);
+ block_cipher(s->expanded, p, 1);
+ tp = tmp;
+ ip = s->ivec;
+ for(eip = ip+8; ip < eip; ){
+ *p++ ^= *ip;
+ *ip++ = *tp++;
+ }
+ }
+
+ if(len > 0){
+ ip = s->ivec;
+ block_cipher(s->expanded, ip, 0);
+ for(eip = ip+len; ip < eip; )
+ *p++ ^= *ip++;
+ }
+}
diff --git a/src/libsec/port/desECB.c b/src/libsec/port/desECB.c
new file mode 100644
index 0000000..a9ad001
--- /dev/null
+++ b/src/libsec/port/desECB.c
@@ -0,0 +1,48 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+// I wasn't sure what to do when the buffer was not
+// a multiple of 8. I did what lacy's cryptolib did
+// to be compatible, but it looks dangerous to me
+// since its encrypting plain text with the key. -- presotto
+
+void
+desECBencrypt(uchar *p, int len, DESstate *s)
+{
+ int i;
+ uchar tmp[8];
+
+ for(; len >= 8; len -= 8){
+ block_cipher(s->expanded, p, 0);
+ p += 8;
+ }
+
+ if(len > 0){
+ for (i=0; i<8; i++)
+ tmp[i] = i;
+ block_cipher(s->expanded, tmp, 0);
+ for (i = 0; i < len; i++)
+ p[i] ^= tmp[i];
+ }
+}
+
+void
+desECBdecrypt(uchar *p, int len, DESstate *s)
+{
+ int i;
+ uchar tmp[8];
+
+ for(; len >= 8; len -= 8){
+ block_cipher(s->expanded, p, 1);
+ p += 8;
+ }
+
+ if(len > 0){
+ for (i=0; i<8; i++)
+ tmp[i] = i;
+ block_cipher(s->expanded, tmp, 0);
+ for (i = 0; i < len; i++)
+ p[i] ^= tmp[i];
+ }
+}
diff --git a/src/libsec/port/dsaalloc.c b/src/libsec/port/dsaalloc.c
new file mode 100644
index 0000000..d82ab3d
--- /dev/null
+++ b/src/libsec/port/dsaalloc.c
@@ -0,0 +1,72 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+DSApub*
+dsapuballoc(void)
+{
+ DSApub *dsa;
+
+ dsa = mallocz(sizeof(*dsa), 1);
+ if(dsa == nil)
+ sysfatal("dsapuballoc");
+ return dsa;
+}
+
+void
+dsapubfree(DSApub *dsa)
+{
+ if(dsa == nil)
+ return;
+ mpfree(dsa->p);
+ mpfree(dsa->q);
+ mpfree(dsa->alpha);
+ mpfree(dsa->key);
+ free(dsa);
+}
+
+
+DSApriv*
+dsaprivalloc(void)
+{
+ DSApriv *dsa;
+
+ dsa = mallocz(sizeof(*dsa), 1);
+ if(dsa == nil)
+ sysfatal("dsaprivalloc");
+ return dsa;
+}
+
+void
+dsaprivfree(DSApriv *dsa)
+{
+ if(dsa == nil)
+ return;
+ mpfree(dsa->pub.p);
+ mpfree(dsa->pub.q);
+ mpfree(dsa->pub.alpha);
+ mpfree(dsa->pub.key);
+ mpfree(dsa->secret);
+ free(dsa);
+}
+
+DSAsig*
+dsasigalloc(void)
+{
+ DSAsig *dsa;
+
+ dsa = mallocz(sizeof(*dsa), 1);
+ if(dsa == nil)
+ sysfatal("dsasigalloc");
+ return dsa;
+}
+
+void
+dsasigfree(DSAsig *dsa)
+{
+ if(dsa == nil)
+ return;
+ mpfree(dsa->r);
+ mpfree(dsa->s);
+ free(dsa);
+}
diff --git a/src/libsec/port/dsagen.c b/src/libsec/port/dsagen.c
new file mode 100644
index 0000000..46c369e
--- /dev/null
+++ b/src/libsec/port/dsagen.c
@@ -0,0 +1,58 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+DSApriv*
+dsagen(DSApub *opub)
+{
+ DSApub *pub;
+ DSApriv *priv;
+ mpint *exp;
+ mpint *g;
+ mpint *r;
+ int bits;
+
+ priv = dsaprivalloc();
+ pub = &priv->pub;
+
+ if(opub != nil){
+ pub->p = mpcopy(opub->p);
+ pub->q = mpcopy(opub->q);
+ } else {
+ pub->p = mpnew(0);
+ pub->q = mpnew(0);
+ DSAprimes(pub->q, pub->p, nil);
+ }
+ bits = Dbits*pub->p->top;
+
+ pub->alpha = mpnew(0);
+ pub->key = mpnew(0);
+ priv->secret = mpnew(0);
+
+ // find a generator alpha of the multiplicative
+ // group Z*p, i.e., of order n = p-1. We use the
+ // fact that q divides p-1 to reduce the exponent.
+ exp = mpnew(0);
+ g = mpnew(0);
+ r = mpnew(0);
+ mpsub(pub->p, mpone, exp);
+ mpdiv(exp, pub->q, exp, r);
+ if(mpcmp(r, mpzero) != 0)
+ sysfatal("dsagen foul up");
+ while(1){
+ mprand(bits, genrandom, g);
+ mpmod(g, pub->p, g);
+ mpexp(g, exp, pub->p, pub->alpha);
+ if(mpcmp(pub->alpha, mpone) != 0)
+ break;
+ }
+ mpfree(g);
+ mpfree(exp);
+
+ // create the secret key
+ mprand(bits, genrandom, priv->secret);
+ mpmod(priv->secret, pub->p, priv->secret);
+ mpexp(pub->alpha, priv->secret, pub->p, pub->key);
+
+ return priv;
+}
diff --git a/src/libsec/port/dsaprimes.c b/src/libsec/port/dsaprimes.c
new file mode 100644
index 0000000..ff1dd5d
--- /dev/null
+++ b/src/libsec/port/dsaprimes.c
@@ -0,0 +1,97 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+// NIST algorithm for generating DSA primes
+// Menezes et al (1997) Handbook of Applied Cryptography, p.151
+// q is a 160-bit prime; p is a 1024-bit prime; q divides p-1
+
+// arithmetic on unsigned ints mod 2**160, represented
+// as 20-byte, little-endian uchar array
+
+static void
+Hrand(uchar *s)
+{
+ ulong *u = (ulong*)s;
+ *u++ = fastrand();
+ *u++ = fastrand();
+ *u++ = fastrand();
+ *u++ = fastrand();
+ *u = fastrand();
+}
+
+static void
+Hincr(uchar *s)
+{
+ int i;
+ for(i=0; i<20; i++)
+ if(++s[i]!=0)
+ break;
+}
+
+// this can run for quite a while; be patient
+void
+DSAprimes(mpint *q, mpint *p, uchar seed[SHA1dlen])
+{
+ int i, j, k, n = 6, b = 63;
+ uchar s[SHA1dlen], Hs[SHA1dlen], Hs1[SHA1dlen], sj[SHA1dlen], sjk[SHA1dlen];
+ mpint *two1023, *mb, *Vk, *W, *X, *q2;
+
+ two1023 = mpnew(1024);
+ mpleft(mpone, 1023, two1023);
+ mb = mpnew(0);
+ mpleft(mpone, b, mb);
+ W = mpnew(1024);
+ Vk = mpnew(1024);
+ X = mpnew(0);
+ q2 = mpnew(0);
+forever:
+ do{
+ Hrand(s);
+ memcpy(sj, s, 20);
+ sha1(s, 20, Hs, 0);
+ Hincr(sj);
+ sha1(sj, 20, Hs1, 0);
+ for(i=0; i<20; i++)
+ Hs[i] ^= Hs1[i];
+ Hs[0] |= 1;
+ Hs[19] |= 0x80;
+ letomp(Hs, 20, q);
+ }while(!probably_prime(q, 18));
+ if(seed != nil) // allow skeptics to confirm computation
+ memmove(seed, s, SHA1dlen);
+ i = 0;
+ j = 2;
+ Hincr(sj);
+ mpleft(q, 1, q2);
+ while(i<4096){
+ memcpy(sjk, sj, 20);
+ for(k=0; k <= n; k++){
+ sha1(sjk, 20, Hs, 0);
+ letomp(Hs, 20, Vk);
+ if(k == n)
+ mpmod(Vk, mb, Vk);
+ mpleft(Vk, 160*k, Vk);
+ mpadd(W, Vk, W);
+ Hincr(sjk);
+ }
+ mpadd(W, two1023, X);
+ mpmod(X, q2, W);
+ mpsub(W, mpone, W);
+ mpsub(X, W, p);
+ if(mpcmp(p, two1023)>=0 && probably_prime(p, 5))
+ goto done;
+ i += 1;
+ j += n+1;
+ for(k=0; k<n+1; k++)
+ Hincr(sj);
+ }
+ goto forever;
+done:
+ mpfree(q2);
+ mpfree(X);
+ mpfree(Vk);
+ mpfree(W);
+ mpfree(mb);
+ mpfree(two1023);
+}
diff --git a/src/libsec/port/dsaprivtopub.c b/src/libsec/port/dsaprivtopub.c
new file mode 100644
index 0000000..e1790ca
--- /dev/null
+++ b/src/libsec/port/dsaprivtopub.c
@@ -0,0 +1,16 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+DSApub*
+dsaprivtopub(DSApriv *priv)
+{
+ DSApub *pub;
+
+ pub = dsapuballoc();
+ pub->p = mpcopy(priv->pub.p);
+ pub->q = mpcopy(priv->pub.q);
+ pub->alpha = mpcopy(priv->pub.alpha);
+ pub->key = mpcopy(priv->pub.key);
+ return pub;
+}
diff --git a/src/libsec/port/dsasign.c b/src/libsec/port/dsasign.c
new file mode 100644
index 0000000..137134b
--- /dev/null
+++ b/src/libsec/port/dsasign.c
@@ -0,0 +1,52 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+DSAsig*
+dsasign(DSApriv *priv, mpint *m)
+{
+ DSApub *pub = &priv->pub;
+ DSAsig *sig;
+ mpint *qm1, *k, *kinv, *r, *s;
+ mpint *q = pub->q, *p = pub->p, *alpha = pub->alpha;
+ int qlen = mpsignif(q);
+
+ qm1 = mpnew(0);
+ kinv = mpnew(0);
+ r = mpnew(0);
+ s = mpnew(0);
+ k = mpnew(0);
+ mpsub(pub->q, mpone, qm1);
+
+ // find a k that has an inverse mod q
+ while(1){
+ mprand(qlen, genrandom, k);
+ if((mpcmp(mpone, k) > 0) || (mpcmp(k, pub->q) >= 0))
+ continue;
+ mpextendedgcd(k, q, r, kinv, s);
+ if(mpcmp(r, mpone) != 0)
+ sysfatal("dsasign: pub->q not prime");
+ break;
+ }
+
+ // make kinv positive
+ mpmod(kinv, pub->q, kinv);
+
+ // r = ((alpha**k) mod p) mod q
+ mpexp(alpha, k, p, r);
+ mpmod(r, q, r);
+
+ // s = (kinv*(m + ar)) mod q
+ mpmul(r, priv->secret, s);
+ mpadd(s, m, s);
+ mpmul(s, kinv, s);
+ mpmod(s, q, s);
+
+ sig = dsasigalloc();
+ sig->r = r;
+ sig->s = s;
+ mpfree(qm1);
+ mpfree(k);
+ mpfree(kinv);
+ return sig;
+}
diff --git a/src/libsec/port/dsaverify.c b/src/libsec/port/dsaverify.c
new file mode 100644
index 0000000..70e7f3c
--- /dev/null
+++ b/src/libsec/port/dsaverify.c
@@ -0,0 +1,46 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+int
+dsaverify(DSApub *pub, DSAsig *sig, mpint *m)
+{
+ int rv = -1;
+ mpint *u1, *u2, *v, *sinv;
+
+ if(mpcmp(sig->r, mpone) < 0 || mpcmp(sig->r, pub->q) >= 0)
+ return rv;
+ if(mpcmp(sig->s, mpone) < 0 || mpcmp(sig->s, pub->q) >= 0)
+ return rv;
+ u1 = mpnew(0);
+ u2 = mpnew(0);
+ v = mpnew(0);
+ sinv = mpnew(0);
+
+ // find (s**-1) mod q, make sure it exists
+ mpextendedgcd(sig->s, pub->q, u1, sinv, v);
+ if(mpcmp(u1, mpone) != 0)
+ goto out;
+
+ // u1 = (sinv * m) mod q, u2 = (r * sinv) mod q
+ mpmul(sinv, m, u1);
+ mpmod(u1, pub->q, u1);
+ mpmul(sig->r, sinv, u2);
+ mpmod(u2, pub->q, u2);
+
+ // v = (((alpha**u1)*(key**u2)) mod p) mod q
+ mpexp(pub->alpha, u1, pub->p, sinv);
+ mpexp(pub->key, u2, pub->p, v);
+ mpmul(sinv, v, v);
+ mpmod(v, pub->p, v);
+ mpmod(v, pub->q, v);
+
+ if(mpcmp(v, sig->r) == 0)
+ rv = 0;
+out:
+ mpfree(v);
+ mpfree(u1);
+ mpfree(u2);
+ mpfree(sinv);
+ return rv;
+}
diff --git a/src/libsec/port/egalloc.c b/src/libsec/port/egalloc.c
new file mode 100644
index 0000000..3f0753d
--- /dev/null
+++ b/src/libsec/port/egalloc.c
@@ -0,0 +1,70 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+EGpub*
+egpuballoc(void)
+{
+ EGpub *eg;
+
+ eg = mallocz(sizeof(*eg), 1);
+ if(eg == nil)
+ sysfatal("egpuballoc");
+ return eg;
+}
+
+void
+egpubfree(EGpub *eg)
+{
+ if(eg == nil)
+ return;
+ mpfree(eg->p);
+ mpfree(eg->alpha);
+ mpfree(eg->key);
+ free(eg);
+}
+
+
+EGpriv*
+egprivalloc(void)
+{
+ EGpriv *eg;
+
+ eg = mallocz(sizeof(*eg), 1);
+ if(eg == nil)
+ sysfatal("egprivalloc");
+ return eg;
+}
+
+void
+egprivfree(EGpriv *eg)
+{
+ if(eg == nil)
+ return;
+ mpfree(eg->pub.p);
+ mpfree(eg->pub.alpha);
+ mpfree(eg->pub.key);
+ mpfree(eg->secret);
+ free(eg);
+}
+
+EGsig*
+egsigalloc(void)
+{
+ EGsig *eg;
+
+ eg = mallocz(sizeof(*eg), 1);
+ if(eg == nil)
+ sysfatal("egsigalloc");
+ return eg;
+}
+
+void
+egsigfree(EGsig *eg)
+{
+ if(eg == nil)
+ return;
+ mpfree(eg->r);
+ mpfree(eg->s);
+ free(eg);
+}
diff --git a/src/libsec/port/egdecrypt.c b/src/libsec/port/egdecrypt.c
new file mode 100644
index 0000000..2457880
--- /dev/null
+++ b/src/libsec/port/egdecrypt.c
@@ -0,0 +1,28 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+mpint*
+egdecrypt(EGpriv *priv, mpint *in, mpint *out)
+{
+ EGpub *pub = &priv->pub;
+ mpint *gamma, *delta;
+ mpint *p = pub->p;
+ int plen = mpsignif(p)+1;
+ int shift = ((plen+Dbits-1)/Dbits)*Dbits;
+
+ if(out == nil)
+ out = mpnew(0);
+ gamma = mpnew(0);
+ delta = mpnew(0);
+ mpright(in, shift, gamma);
+ mpleft(gamma, shift, delta);
+ mpsub(in, delta, delta);
+ mpexp(gamma, priv->secret, p, out);
+ mpinvert(out, p, gamma);
+ mpmul(gamma, delta, out);
+ mpmod(out, p, out);
+ mpfree(gamma);
+ mpfree(delta);
+ return out;
+}
diff --git a/src/libsec/port/egencrypt.c b/src/libsec/port/egencrypt.c
new file mode 100644
index 0000000..9b6b12c
--- /dev/null
+++ b/src/libsec/port/egencrypt.c
@@ -0,0 +1,38 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+mpint*
+egencrypt(EGpub *pub, mpint *in, mpint *out)
+{
+ mpint *m, *k, *gamma, *delta, *pm1;
+ mpint *p = pub->p, *alpha = pub->alpha;
+ int plen = mpsignif(p);
+ int shift = ((plen+Dbits)/Dbits)*Dbits;
+ // in libcrypt version, (int)(LENGTH(pub->p)*sizeof(NumType)*CHARBITS);
+
+ if(out == nil)
+ out = mpnew(0);
+ pm1 = mpnew(0);
+ m = mpnew(0);
+ gamma = mpnew(0);
+ delta = mpnew(0);
+ mpmod(in, p, m);
+ while(1){
+ k = mprand(plen, genrandom, nil);
+ if((mpcmp(mpone, k) <= 0) && (mpcmp(k, pm1) < 0))
+ break;
+ }
+ mpexp(alpha, k, p, gamma);
+ mpexp(pub->key, k, p, delta);
+ mpmul(m, delta, delta);
+ mpmod(delta, p, delta);
+ mpleft(gamma, shift, out);
+ mpadd(delta, out, out);
+ mpfree(pm1);
+ mpfree(m);
+ mpfree(k);
+ mpfree(gamma);
+ mpfree(delta);
+ return out;
+}
diff --git a/src/libsec/port/eggen.c b/src/libsec/port/eggen.c
new file mode 100644
index 0000000..9ea7d99
--- /dev/null
+++ b/src/libsec/port/eggen.c
@@ -0,0 +1,21 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+EGpriv*
+eggen(int nlen, int rounds)
+{
+ EGpub *pub;
+ EGpriv *priv;
+
+ priv = egprivalloc();
+ pub = &priv->pub;
+ pub->p = mpnew(0);
+ pub->alpha = mpnew(0);
+ pub->key = mpnew(0);
+ priv->secret = mpnew(0);
+ gensafeprime(pub->p, pub->alpha, nlen, rounds);
+ mprand(nlen-1, genrandom, priv->secret);
+ mpexp(pub->alpha, priv->secret, pub->p, pub->key);
+ return priv;
+}
diff --git a/src/libsec/port/egprivtopub.c b/src/libsec/port/egprivtopub.c
new file mode 100644
index 0000000..e22c5c3
--- /dev/null
+++ b/src/libsec/port/egprivtopub.c
@@ -0,0 +1,17 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+EGpub*
+egprivtopub(EGpriv *priv)
+{
+ EGpub *pub;
+
+ pub = egpuballoc();
+ if(pub == nil)
+ return nil;
+ pub->p = mpcopy(priv->pub.p);
+ pub->alpha = mpcopy(priv->pub.alpha);
+ pub->key = mpcopy(priv->pub.key);
+ return pub;
+}
diff --git a/src/libsec/port/egsign.c b/src/libsec/port/egsign.c
new file mode 100644
index 0000000..1054004
--- /dev/null
+++ b/src/libsec/port/egsign.c
@@ -0,0 +1,43 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+EGsig*
+egsign(EGpriv *priv, mpint *m)
+{
+ EGpub *pub = &priv->pub;
+ EGsig *sig;
+ mpint *pm1, *k, *kinv, *r, *s;
+ mpint *p = pub->p, *alpha = pub->alpha;
+ int plen = mpsignif(p);
+
+ pm1 = mpnew(0);
+ kinv = mpnew(0);
+ r = mpnew(0);
+ s = mpnew(0);
+ k = mpnew(0);
+ mpsub(p, mpone, pm1);
+ while(1){
+ mprand(plen, genrandom, k);
+ if((mpcmp(mpone, k) > 0) || (mpcmp(k, pm1) >= 0))
+ continue;
+ mpextendedgcd(k, pm1, r, kinv, s);
+ if(mpcmp(r, mpone) != 0)
+ continue;
+ break;
+ }
+ mpmod(kinv, pm1, kinv); // make kinv positive
+ mpexp(alpha, k, p, r);
+ mpmul(priv->secret, r, s);
+ mpmod(s, pm1, s);
+ mpsub(m, s, s);
+ mpmul(kinv, s, s);
+ mpmod(s, pm1, s);
+ sig = egsigalloc();
+ sig->r = r;
+ sig->s = s;
+ mpfree(pm1);
+ mpfree(k);
+ mpfree(kinv);
+ return sig;
+}
diff --git a/src/libsec/port/egtest.c b/src/libsec/port/egtest.c
new file mode 100644
index 0000000..41b438d
--- /dev/null
+++ b/src/libsec/port/egtest.c
@@ -0,0 +1,34 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+void
+main(void)
+{
+ EGpriv *sk;
+ mpint *m, *gamma, *delta, *in, *out;
+ int plen, shift;
+
+ fmtinstall('B', mpconv);
+
+ sk = egprivalloc();
+ sk->pub.p = uitomp(2357, nil);
+ sk->pub.alpha = uitomp(2, nil);
+ sk->pub.key = uitomp(1185, nil);
+ sk->secret = uitomp(1751, nil);
+
+ m = uitomp(2035, nil);
+
+ plen = mpsignif(sk->pub.p)+1;
+ shift = ((plen+Dbits-1)/Dbits)*Dbits;
+ gamma = uitomp(1430, nil);
+ delta = uitomp(697, nil);
+ out = mpnew(0);
+ in = mpnew(0);
+ mpleft(gamma, shift, in);
+ mpadd(delta, in, in);
+ egdecrypt(sk, in, out);
+
+ if(mpcmp(m, out) != 0)
+ print("decrypt failed to recover message\n");
+}
diff --git a/src/libsec/port/egverify.c b/src/libsec/port/egverify.c
new file mode 100644
index 0000000..29a9515
--- /dev/null
+++ b/src/libsec/port/egverify.c
@@ -0,0 +1,29 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+int
+egverify(EGpub *pub, EGsig *sig, mpint *m)
+{
+ mpint *p = pub->p, *alpha = pub->alpha;
+ mpint *r = sig->r, *s = sig->s;
+ mpint *v1, *v2, *rs;
+ int rv = -1;
+
+ if(mpcmp(r, mpone) < 0 || mpcmp(r, p) >= 0)
+ return rv;
+ v1 = mpnew(0);
+ rs = mpnew(0);
+ v2 = mpnew(0);
+ mpexp(pub->key, r, p, v1);
+ mpexp(r, s, p, rs);
+ mpmul(v1, rs, v1);
+ mpmod(v1, p, v1);
+ mpexp(alpha, m, p, v2);
+ if(mpcmp(v1, v2) == 0)
+ rv = 0;
+ mpfree(v1);
+ mpfree(rs);
+ mpfree(v2);
+ return rv;
+}
diff --git a/src/libsec/port/genprime.c b/src/libsec/port/genprime.c
new file mode 100644
index 0000000..c0e16d9
--- /dev/null
+++ b/src/libsec/port/genprime.c
@@ -0,0 +1,27 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+// generate a probable prime. accuracy is the miller-rabin interations
+void
+genprime(mpint *p, int n, int accuracy)
+{
+ mpdigit x;
+
+ // generate n random bits with high and low bits set
+ mpbits(p, n);
+ genrandom((uchar*)p->p, (n+7)/8);
+ p->top = (n+Dbits-1)/Dbits;
+ x = 1;
+ x <<= ((n-1)%Dbits);
+ p->p[p->top-1] &= (x-1);
+ p->p[p->top-1] |= x;
+ p->p[0] |= 1;
+
+ // keep icrementing till it looks prime
+ for(;;){
+ if(probably_prime(p, accuracy))
+ break;
+ mpadd(p, mptwo, p);
+ }
+}
diff --git a/src/libsec/port/gensafeprime.c b/src/libsec/port/gensafeprime.c
new file mode 100644
index 0000000..e95c94c
--- /dev/null
+++ b/src/libsec/port/gensafeprime.c
@@ -0,0 +1,36 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+// find a prime p of length n and a generator alpha of Z^*_p
+// Alg 4.86 Menezes et al () Handbook, p.164
+void
+gensafeprime(mpint *p, mpint *alpha, int n, int accuracy)
+{
+ mpint *q, *b;
+
+ q = mpnew(n-1);
+ while(1){
+ genprime(q, n-1, accuracy);
+ mpleft(q, 1, p);
+ mpadd(p, mpone, p); // p = 2*q+1
+ if(probably_prime(p, accuracy))
+ break;
+ }
+ // now find a generator alpha of the multiplicative
+ // group Z*_p of order p-1=2q
+ b = mpnew(0);
+ while(1){
+ mprand(n, genrandom, alpha);
+ mpmod(alpha, p, alpha);
+ mpmul(alpha, alpha, b);
+ mpmod(b, p, b);
+ if(mpcmp(b, mpone) == 0)
+ continue;
+ mpexp(alpha, q, p, b);
+ if(mpcmp(b, mpone) != 0)
+ break;
+ }
+ mpfree(b);
+ mpfree(q);
+}
diff --git a/src/libsec/port/genstrongprime.c b/src/libsec/port/genstrongprime.c
new file mode 100644
index 0000000..27c43a9
--- /dev/null
+++ b/src/libsec/port/genstrongprime.c
@@ -0,0 +1,57 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+// Gordon's algorithm for generating a strong prime
+// Menezes et al () Handbook, p.150
+void
+genstrongprime(mpint *p, int n, int accuracy)
+{
+ mpint *s, *t, *r, *i;
+
+ if(n < 64)
+ n = 64;
+
+ s = mpnew(n/2);
+ genprime(s, (n/2)-16, accuracy);
+ t = mpnew(n/2);
+ genprime(t, n-mpsignif(s)-32, accuracy);
+
+ // first r = 2it + 1 that's prime
+ i = mpnew(16);
+ r = mpnew(0);
+ itomp(0x8000, i);
+ mpleft(t, 1, t); // 2t
+ mpmul(i, t, r); // 2it
+ mpadd(r, mpone, r); // 2it + 1
+ for(;;){
+ if(probably_prime(r, 18))
+ break;
+ mpadd(r, t, r); // r += 2t
+ }
+
+ // p0 = 2(s**(r-2) mod r)s - 1
+ itomp(2, p);
+ mpsub(r, p, p);
+ mpexp(s, p, r, p);
+ mpmul(s, p, p);
+ mpleft(p, 1, p);
+ mpsub(p, mpone, p);
+
+ // first p = p0 + 2irs that's prime
+ itomp(0x8000, i);
+ mpleft(r, 1, r); // 2r
+ mpmul(r, s, r); // 2rs
+ mpmul(r, i, i); // 2irs
+ mpadd(p, i, p); // p0 + 2irs
+ for(;;){
+ if(probably_prime(p, accuracy))
+ break;
+ mpadd(p, r, p); // p += 2rs
+ }
+
+ mpfree(i);
+ mpfree(s);
+ mpfree(r);
+ mpfree(t);
+}
diff --git a/src/libsec/port/hmac.c b/src/libsec/port/hmac.c
new file mode 100644
index 0000000..c723973
--- /dev/null
+++ b/src/libsec/port/hmac.c
@@ -0,0 +1,56 @@
+#include "os.h"
+#include <libsec.h>
+
+/* rfc2104 */
+static DigestState*
+hmac_x(uchar *p, ulong len, uchar *key, ulong klen, uchar *digest, DigestState *s,
+ DigestState*(*x)(uchar*, ulong, uchar*, DigestState*), int xlen)
+{
+ int i;
+ uchar pad[65], innerdigest[256];
+
+ if(xlen > sizeof(innerdigest))
+ return nil;
+
+ if(klen>64)
+ return nil;
+
+ /* first time through */
+ if(s == nil){
+ for(i=0; i<64; i++)
+ pad[i] = 0x36;
+ pad[64] = 0;
+ for(i=0; i<klen; i++)
+ pad[i] ^= key[i];
+ s = (*x)(pad, 64, nil, nil);
+ if(s == nil)
+ return nil;
+ }
+
+ s = (*x)(p, len, nil, s);
+ if(digest == nil)
+ return s;
+
+ /* last time through */
+ for(i=0; i<64; i++)
+ pad[i] = 0x5c;
+ pad[64] = 0;
+ for(i=0; i<klen; i++)
+ pad[i] ^= key[i];
+ (*x)(nil, 0, innerdigest, s);
+ s = (*x)(pad, 64, nil, nil);
+ (*x)(innerdigest, xlen, digest, s);
+ return nil;
+}
+
+DigestState*
+hmac_sha1(uchar *p, ulong len, uchar *key, ulong klen, uchar *digest, DigestState *s)
+{
+ return hmac_x(p, len, key, klen, digest, s, sha1, SHA1dlen);
+}
+
+DigestState*
+hmac_md5(uchar *p, ulong len, uchar *key, ulong klen, uchar *digest, DigestState *s)
+{
+ return hmac_x(p, len, key, klen, digest, s, md5, MD5dlen);
+}
diff --git a/src/libsec/port/hmactest.c b/src/libsec/port/hmactest.c
new file mode 100644
index 0000000..8c7d896
--- /dev/null
+++ b/src/libsec/port/hmactest.c
@@ -0,0 +1,19 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+uchar key[] = "Jefe";
+uchar data[] = "what do ya want for nothing?";
+
+void
+main(void)
+{
+ int i;
+ uchar hash[MD5dlen];
+
+ hmac_md5(data, strlen((char*)data), key, 4, hash, nil);
+ for(i=0; i<MD5dlen; i++)
+ print("%2.2x", hash[i]);
+ print("\n");
+ print("750c783e6ab0b503eaa86e310a5db738\n");
+}
diff --git a/src/libsec/port/md4.c b/src/libsec/port/md4.c
new file mode 100644
index 0000000..c4a2f32
--- /dev/null
+++ b/src/libsec/port/md4.c
@@ -0,0 +1,271 @@
+#include "os.h"
+#include <libsec.h>
+
+/*
+ * This MD4 is implemented from the description in Stinson's Cryptography,
+ * theory and practice. -- presotto
+ */
+
+/*
+ * Rotate ammounts used in the algorithm
+ */
+enum
+{
+ S11= 3,
+ S12= 7,
+ S13= 11,
+ S14= 19,
+
+ S21= 3,
+ S22= 5,
+ S23= 9,
+ S24= 13,
+
+ S31= 3,
+ S32= 9,
+ S33= 11,
+ S34= 15,
+};
+
+typedef struct MD4Table MD4Table;
+struct MD4Table
+{
+ uchar x; /* index into data block */
+ uchar rot; /* amount to rotate left by */
+};
+
+static MD4Table tab[] =
+{
+ /* round 1 */
+/*[0]*/ { 0, S11},
+ { 1, S12},
+ { 2, S13},
+ { 3, S14},
+ { 4, S11},
+ { 5, S12},
+ { 6, S13},
+ { 7, S14},
+ { 8, S11},
+ { 9, S12},
+ { 10, S13},
+ { 11, S14},
+ { 12, S11},
+ { 13, S12},
+ { 14, S13},
+ { 15, S14},
+
+ /* round 2 */
+/*[16]*/{ 0, S21},
+ { 4, S22},
+ { 8, S23},
+ { 12, S24},
+ { 1, S21},
+ { 5, S22},
+ { 9, S23},
+ { 13, S24},
+ { 2, S21},
+ { 6, S22},
+ { 10, S23},
+ { 14, S24},
+ { 3, S21},
+ { 7, S22},
+ { 11, S23},
+ { 15, S24},
+
+ /* round 3 */
+/*[32]*/{ 0, S31},
+ { 8, S32},
+ { 4, S33},
+ { 12, S34},
+ { 2, S31},
+ { 10, S32},
+ { 6, S33},
+ { 14, S34},
+ { 1, S31},
+ { 9, S32},
+ { 5, S33},
+ { 13, S34},
+ { 3, S31},
+ { 11, S32},
+ { 7, S33},
+ { 15, S34},
+};
+
+static void encode(uchar*, u32int*, ulong);
+static void decode(u32int*, uchar*, ulong);
+
+static void
+md4block(uchar *p, ulong len, MD4state *s)
+{
+ int i;
+ u32int a, b, c, d, tmp;
+ MD4Table *t;
+ uchar *end;
+ u32int x[16];
+
+ for(end = p+len; p < end; p += 64){
+ a = s->state[0];
+ b = s->state[1];
+ c = s->state[2];
+ d = s->state[3];
+
+ decode(x, p, 64);
+
+ for(i = 0; i < 48; i++){
+ t = tab + i;
+ switch(i>>4){
+ case 0:
+ a += (b & c) | (~b & d);
+ break;
+ case 1:
+ a += ((b & c) | (b & d) | (c & d)) + 0x5A827999;
+ break;
+ case 2:
+ a += (b ^ c ^ d) + 0x6ED9EBA1;
+ break;
+ }
+ a += x[t->x];
+ a = (a << t->rot) | (a >> (32 - t->rot));
+
+ /* rotate variables */
+ tmp = d;
+ d = c;
+ c = b;
+ b = a;
+ a = tmp;
+ }
+
+ s->state[0] += a;
+ s->state[1] += b;
+ s->state[2] += c;
+ s->state[3] += d;
+
+ s->len += 64;
+ }
+}
+
+MD4state*
+md4(uchar *p, ulong len, uchar *digest, MD4state *s)
+{
+ u32int x[16];
+ uchar buf[128];
+ int i;
+ uchar *e;
+
+ if(s == nil){
+ s = malloc(sizeof(*s));
+ if(s == nil)
+ return nil;
+ memset(s, 0, sizeof(*s));
+ s->malloced = 1;
+ }
+
+ if(s->seeded == 0){
+ /* seed the state, these constants would look nicer big-endian */
+ s->state[0] = 0x67452301;
+ s->state[1] = 0xefcdab89;
+ s->state[2] = 0x98badcfe;
+ s->state[3] = 0x10325476;
+ s->seeded = 1;
+ }
+
+ /* fill out the partial 64 byte block from previous calls */
+ if(s->blen){
+ i = 64 - s->blen;
+ if(len < i)
+ i = len;
+ memmove(s->buf + s->blen, p, i);
+ len -= i;
+ s->blen += i;
+ p += i;
+ if(s->blen == 64){
+ md4block(s->buf, s->blen, s);
+ s->blen = 0;
+ }
+ }
+
+ /* do 64 byte blocks */
+ i = len & ~0x3f;
+ if(i){
+ md4block(p, i, s);
+ len -= i;
+ p += i;
+ }
+
+ /* save the left overs if not last call */
+ if(digest == 0){
+ if(len){
+ memmove(s->buf, p, len);
+ s->blen += len;
+ }
+ return s;
+ }
+
+ /*
+ * this is the last time through, pad what's left with 0x80,
+ * 0's, and the input count to create a multiple of 64 bytes
+ */
+ if(s->blen){
+ p = s->buf;
+ len = s->blen;
+ } else {
+ memmove(buf, p, len);
+ p = buf;
+ }
+ s->len += len;
+ e = p + len;
+ if(len < 56)
+ i = 56 - len;
+ else
+ i = 120 - len;
+ memset(e, 0, i);
+ *e = 0x80;
+ len += i;
+
+ /* append the count */
+ x[0] = s->len<<3;
+ x[1] = s->len>>29;
+ encode(p+len, x, 8);
+
+ /* digest the last part */
+ md4block(p, len+8, s);
+
+ /* return result and free state */
+ encode(digest, s->state, MD4dlen);
+ if(s->malloced == 1)
+ free(s);
+ return nil;
+}
+
+/*
+ * encodes input (u32int) into output (uchar). Assumes len is
+ * a multiple of 4.
+ */
+static void
+encode(uchar *output, u32int *input, ulong len)
+{
+ u32int x;
+ uchar *e;
+
+ for(e = output + len; output < e;) {
+ x = *input++;
+ *output++ = x;
+ *output++ = x >> 8;
+ *output++ = x >> 16;
+ *output++ = x >> 24;
+ }
+}
+
+/*
+ * decodes input (uchar) into output (u32int). Assumes len is
+ * a multiple of 4.
+ */
+static void
+decode(u32int *output, uchar *input, ulong len)
+{
+ uchar *e;
+
+ for(e = input+len; input < e; input += 4)
+ *output++ = input[0] | (input[1] << 8) |
+ (input[2] << 16) | (input[3] << 24);
+}
diff --git a/src/libsec/port/md4test.c b/src/libsec/port/md4test.c
new file mode 100644
index 0000000..417cb33
--- /dev/null
+++ b/src/libsec/port/md4test.c
@@ -0,0 +1,31 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+char *tests[] = {
+ "",
+ "a",
+ "abc",
+ "message digest",
+ "abcdefghijklmnopqrstuvwxyz",
+ "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789",
+ "12345678901234567890123456789012345678901234567890123456789012345678901234567890",
+ 0
+};
+
+void
+main(void)
+{
+ char **pp;
+ uchar *p;
+ int i;
+ uchar digest[MD5dlen];
+
+ for(pp = tests; *pp; pp++){
+ p = (uchar*)*pp;
+ md4(p, strlen(*pp), digest, 0);
+ for(i = 0; i < MD5dlen; i++)
+ print("%2.2ux", digest[i]);
+ print("\n");
+ }
+}
diff --git a/src/libsec/port/md5pickle.c b/src/libsec/port/md5pickle.c
new file mode 100644
index 0000000..5b353b5
--- /dev/null
+++ b/src/libsec/port/md5pickle.c
@@ -0,0 +1,37 @@
+#include "os.h"
+#include <libsec.h>
+
+char*
+md5pickle(MD5state *s)
+{
+ char *p;
+ int m, n;
+
+ m = 4*9+4*((s->blen+3)/3);
+ p = malloc(m);
+ if(p == nil)
+ return p;
+ n = sprint(p, "%8.8ux %8.8ux %8.8ux %8.8ux ",
+ s->state[0], s->state[1], s->state[2],
+ s->state[3]);
+ enc64(p+n, m-n, s->buf, s->blen);
+ return p;
+}
+
+MD5state*
+md5unpickle(char *p)
+{
+ MD5state *s;
+
+ s = malloc(sizeof(*s));
+ if(s == nil)
+ return nil;
+ s->state[0] = strtoul(p, &p, 16);
+ s->state[1] = strtoul(p, &p, 16);
+ s->state[2] = strtoul(p, &p, 16);
+ s->state[3] = strtoul(p, &p, 16);
+ s->blen = dec64(s->buf, sizeof(s->buf), p, strlen(p));
+ s->malloced = 1;
+ s->seeded = 1;
+ return s;
+}
diff --git a/src/libsec/port/nfastrand.c b/src/libsec/port/nfastrand.c
new file mode 100644
index 0000000..3ba7700
--- /dev/null
+++ b/src/libsec/port/nfastrand.c
@@ -0,0 +1,23 @@
+#include <u.h>
+#include <libc.h>
+#include <libsec.h>
+
+#define Maxrand ((1UL<<31)-1)
+
+ulong
+nfastrand(ulong n)
+{
+ ulong m, r;
+
+ /*
+ * set m to the maximum multiple of n <= 2^31-1
+ * so we want a random number < m.
+ */
+ if(n > Maxrand)
+ sysfatal("nfastrand: n too large");
+
+ m = Maxrand - Maxrand % n;
+ while((r = fastrand()) >= m)
+ ;
+ return r%n;
+}
diff --git a/src/libsec/port/primetest.c b/src/libsec/port/primetest.c
new file mode 100644
index 0000000..2d082e6
--- /dev/null
+++ b/src/libsec/port/primetest.c
@@ -0,0 +1,41 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+void
+main(void)
+{
+ mpint *z = mpnew(0);
+ mpint *p = mpnew(0);
+ mpint *q = mpnew(0);
+ mpint *nine = mpnew(0);
+
+ fmtinstall('B', mpconv);
+ strtomp("2492491", nil, 16, z); // 38347921 = x*y = (2**28-9)/7,
+ // an example of 3**(n-1)=1 mod n
+ strtomp("15662C00E811", nil, 16, p);// 23528569104401, a prime
+ uitomp(9, nine);
+
+ if(probably_prime(z, 5) == 1)
+ fprint(2, "tricked primality test\n");
+ if(probably_prime(nine, 5) == 1)
+ fprint(2, "9 passed primality test!\n");
+ if(probably_prime(p, 25) == 1)
+ fprint(2, "ok\n");
+
+ DSAprimes(q, p, nil);
+ print("q=%B\np=%B\n", q, p);
+
+ exits(0);
+}
+
+// example output, checked with Maple:
+// seed EB7B6E35F7CD37B511D96C67D6688CC4DD440E1E
+// q=E0F0EF284E10796C5A2A511E94748BA03C795C13
+// = 1284186945063585093695748280224501481698995297299
+// p=C41CFBE4D4846F67A3DF7DE9921A49D3B42DC33728427AB159CEC8CBBDB12B5F0C244F1A734AEB9840804EA3C25036AD1B61AFF3ABBC247CD4B384224567A863A6F020E7EE9795554BCD08ABAD7321AF27E1E92E3DB1C6E7E94FAAE590AE9C48F96D93D178E809401ABE8A534A1EC44359733475A36A70C7B425125062B1142D
+// = 137715385439333164327584575331308277462546592976152006175830654712456008630139443747529133857837818585400418619916530061955288983751958831927807888408309879880101870216437711393638413509484569804814373511469405934988856674935304074081350525593807908358867354528898618574659752879015380013845760006721861915693
+// r=DF310F4E54A5FEC5D86D3E14863921E834113E060F90052AD332B3241CEF2497EFA0303D6344F7C819691A0F9C4A773815AF8EAECFB7EC1D98F039F17A32A7E887D97251A927D093F44A55577F4D70444AEBD06B9B45695EC23962B175F266895C67D21C4656848614D888A4
+// = 107239359478548771267308764204625458348785444483302647285245969203446101233421655396874997253111222983406676955642093641709149748793954493558324738441197139556917622937892491175016280660608595599724194374948056515856812347094848443460715881455884639869144172708
+// g=2F1C308DC46B9A44B52DF7DACCE1208CCEF72F69C743ADD4D2327173444ED6E65E074694246E07F9FD4AE26E0FDDD9F54F813C40CB9BCD4338EA6F242AB94CD410E676C290368A16B1A3594877437E516C53A6EEE5493A038A017E955E218E7819734E3E2A6E0BAE08B14258F8C03CC1B30E0DDADFCF7CEDF0727684D3D255F1
+// = 33081848392740465806285326014906437543653045153885419334085917570615301913274531387168723847139029827598735376746057461417880810924280288611116213062512408829164220104555543445909528701551198146080221790002337033997295756585193926863581671466708482411159477816144226847280417522524922667065714073338662508017
diff --git a/src/libsec/port/prng.c b/src/libsec/port/prng.c
new file mode 100644
index 0000000..fc2e508
--- /dev/null
+++ b/src/libsec/port/prng.c
@@ -0,0 +1,15 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+//
+// just use the libc prng to fill a buffer
+//
+void
+prng(uchar *p, int n)
+{
+ uchar *e;
+
+ for(e = p+n; p < e; p++)
+ *p = rand();
+}
diff --git a/src/libsec/port/probably_prime.c b/src/libsec/port/probably_prime.c
new file mode 100644
index 0000000..4eaccba
--- /dev/null
+++ b/src/libsec/port/probably_prime.c
@@ -0,0 +1,84 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+// Miller-Rabin probabilistic primality testing
+// Knuth (1981) Seminumerical Algorithms, p.379
+// Menezes et al () Handbook, p.39
+// 0 if composite; 1 if almost surely prime, Pr(err)<1/4**nrep
+int
+probably_prime(mpint *n, int nrep)
+{
+ int j, k, rep, nbits, isprime = 1;
+ mpint *nm1, *q, *x, *y, *r;
+
+ if(n->sign < 0)
+ sysfatal("negative prime candidate");
+
+ if(nrep <= 0)
+ nrep = 18;
+
+ k = mptoi(n);
+ if(k == 2) // 2 is prime
+ return 1;
+ if(k < 2) // 1 is not prime
+ return 0;
+ if((n->p[0] & 1) == 0) // even is not prime
+ return 0;
+
+ // test against small prime numbers
+ if(smallprimetest(n) < 0)
+ return 0;
+
+ // fermat test, 2^n mod n == 2 if p is prime
+ x = uitomp(2, nil);
+ y = mpnew(0);
+ mpexp(x, n, n, y);
+ k = mptoi(y);
+ if(k != 2){
+ mpfree(x);
+ mpfree(y);
+ return 0;
+ }
+
+ nbits = mpsignif(n);
+ nm1 = mpnew(nbits);
+ mpsub(n, mpone, nm1); // nm1 = n - 1 */
+ k = mplowbits0(nm1);
+ q = mpnew(0);
+ mpright(nm1, k, q); // q = (n-1)/2**k
+
+ for(rep = 0; rep < nrep; rep++){
+
+ // x = random in [2, n-2]
+ r = mprand(nbits, prng, nil);
+ mpmod(r, nm1, x);
+ mpfree(r);
+ if(mpcmp(x, mpone) <= 0)
+ continue;
+
+ // y = x**q mod n
+ mpexp(x, q, n, y);
+
+ if(mpcmp(y, mpone) == 0 || mpcmp(y, nm1) == 0)
+ goto done;
+
+ for(j = 1; j < k; j++){
+ mpmul(y, y, x);
+ mpmod(x, n, y); // y = y*y mod n
+ if(mpcmp(y, nm1) == 0)
+ goto done;
+ if(mpcmp(y, mpone) == 0){
+ isprime = 0;
+ goto done;
+ }
+ }
+ isprime = 0;
+ }
+done:
+ mpfree(y);
+ mpfree(x);
+ mpfree(q);
+ mpfree(nm1);
+ return isprime;
+}
diff --git a/src/libsec/port/rc4.c b/src/libsec/port/rc4.c
new file mode 100644
index 0000000..beafa48
--- /dev/null
+++ b/src/libsec/port/rc4.c
@@ -0,0 +1,104 @@
+#include "os.h"
+#include <libsec.h>
+
+void
+setupRC4state(RC4state *key, uchar *start, int n)
+{
+ int t;
+ int index2;
+ uchar *state;
+ uchar *p, *e, *sp, *se;
+
+ state = key->state;
+ se = &state[256];
+ for(sp = state; sp < se; sp++)
+ *sp = sp - state;
+
+ key->x = 0;
+ key->y = 0;
+ index2 = 0;
+ e = start + n;
+ p = start;
+ for(sp = state; sp < se; sp++)
+ {
+ t = *sp;
+ index2 = (*p + t + index2) & 255;
+ *sp = state[index2];
+ state[index2] = t;
+ if(++p >= e)
+ p = start;
+ }
+}
+
+void
+rc4(RC4state *key, uchar *p, int len)
+{
+ int tx, ty;
+ int x, y;
+ uchar *state;
+ uchar *e;
+
+ x = key->x;
+ y = key->y;
+ state = &key->state[0];
+ for(e = p + len; p < e; p++)
+ {
+ x = (x+1)&255;
+ tx = state[x];
+ y = (y+tx)&255;
+ ty = state[y];
+ state[x] = ty;
+ state[y] = tx;
+ *p ^= state[(tx+ty)&255];
+ }
+ key->x = x;
+ key->y = y;
+}
+
+void
+rc4skip(RC4state *key, int len)
+{
+ int tx, ty;
+ int x, y;
+ uchar *state;
+ int i;
+
+ x = key->x;
+ y = key->y;
+ state = &key->state[0];
+ for(i=0; i<len; i++)
+ {
+ x = (x+1)&255;
+ tx = state[x];
+ y = (y+tx)&255;
+ ty = state[y];
+ state[x] = ty;
+ state[y] = tx;
+ }
+ key->x = x;
+ key->y = y;
+}
+
+void
+rc4back(RC4state *key, int len)
+{
+ int tx, ty;
+ int x, y;
+ uchar *state;
+ int i;
+
+ x = key->x;
+ y = key->y;
+ state = &key->state[0];
+ for(i=0; i<len; i++)
+ {
+ ty = state[x];
+ tx = state[y];
+ state[y] = ty;
+ state[x] = tx;
+ y = (y-tx)&255;
+ x = (x-1)&255;
+ }
+ key->x = x;
+ key->y = y;
+}
diff --git a/src/libsec/port/readcert.c b/src/libsec/port/readcert.c
new file mode 100644
index 0000000..9ba801f
--- /dev/null
+++ b/src/libsec/port/readcert.c
@@ -0,0 +1,51 @@
+#include <u.h>
+#include <libc.h>
+#include <auth.h>
+#include <mp.h>
+#include <libsec.h>
+
+static char*
+readfile(char *name)
+{
+ int fd;
+ char *s;
+ Dir *d;
+
+ fd = open(name, OREAD);
+ if(fd < 0)
+ return nil;
+ if((d = dirfstat(fd)) == nil)
+ return nil;
+ s = malloc(d->length + 1);
+ if(s == nil || readn(fd, s, d->length) != d->length){
+ free(s);
+ free(d);
+ close(fd);
+ return nil;
+ }
+ close(fd);
+ s[d->length] = '\0';
+ free(d);
+ return s;
+}
+
+uchar*
+readcert(char *filename, int *pcertlen)
+{
+ char *pem;
+ uchar *binary;
+
+ pem = readfile(filename);
+ if(pem == nil){
+ werrstr("can't read %s", filename);
+ return nil;
+ }
+ binary = decodepem(pem, "CERTIFICATE", pcertlen);
+ free(pem);
+ if(binary == nil){
+ werrstr("can't parse %s", filename);
+ return nil;
+ }
+ return binary;
+}
+
diff --git a/src/libsec/port/rsaalloc.c b/src/libsec/port/rsaalloc.c
new file mode 100644
index 0000000..0caa96d
--- /dev/null
+++ b/src/libsec/port/rsaalloc.c
@@ -0,0 +1,52 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+RSApub*
+rsapuballoc(void)
+{
+ RSApub *rsa;
+
+ rsa = mallocz(sizeof(*rsa), 1);
+ if(rsa == nil)
+ sysfatal("rsapuballoc");
+ return rsa;
+}
+
+void
+rsapubfree(RSApub *rsa)
+{
+ if(rsa == nil)
+ return;
+ mpfree(rsa->ek);
+ mpfree(rsa->n);
+ free(rsa);
+}
+
+
+RSApriv*
+rsaprivalloc(void)
+{
+ RSApriv *rsa;
+
+ rsa = mallocz(sizeof(*rsa), 1);
+ if(rsa == nil)
+ sysfatal("rsaprivalloc");
+ return rsa;
+}
+
+void
+rsaprivfree(RSApriv *rsa)
+{
+ if(rsa == nil)
+ return;
+ mpfree(rsa->pub.ek);
+ mpfree(rsa->pub.n);
+ mpfree(rsa->dk);
+ mpfree(rsa->p);
+ mpfree(rsa->q);
+ mpfree(rsa->kp);
+ mpfree(rsa->kq);
+ mpfree(rsa->c2);
+ free(rsa);
+}
diff --git a/src/libsec/port/rsadecrypt.c b/src/libsec/port/rsadecrypt.c
new file mode 100644
index 0000000..1e937be
--- /dev/null
+++ b/src/libsec/port/rsadecrypt.c
@@ -0,0 +1,37 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+// decrypt rsa using garner's algorithm for the chinese remainder theorem
+// seminumerical algorithms, knuth, pp 253-254
+// applied cryptography, menezes et al, pg 612
+mpint*
+rsadecrypt(RSApriv *rsa, mpint *in, mpint *out)
+{
+ mpint *v1, *v2;
+
+ if(out == nil)
+ out = mpnew(0);
+
+ // convert in to modular representation
+ v1 = mpnew(0);
+ mpmod(in, rsa->p, v1);
+ v2 = mpnew(0);
+ mpmod(in, rsa->q, v2);
+
+ // exponentiate the modular rep
+ mpexp(v1, rsa->kp, rsa->p, v1);
+ mpexp(v2, rsa->kq, rsa->q, v2);
+
+ // out = v1 + p*((v2-v1)*c2 mod q)
+ mpsub(v2, v1, v2);
+ mpmul(v2, rsa->c2, v2);
+ mpmod(v2, rsa->q, v2);
+ mpmul(v2, rsa->p, out);
+ mpadd(v1, out, out);
+
+ mpfree(v1);
+ mpfree(v2);
+
+ return out;
+}
diff --git a/src/libsec/port/rsaencrypt.c b/src/libsec/port/rsaencrypt.c
new file mode 100644
index 0000000..ade686d
--- /dev/null
+++ b/src/libsec/port/rsaencrypt.c
@@ -0,0 +1,12 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+mpint*
+rsaencrypt(RSApub *rsa, mpint *in, mpint *out)
+{
+ if(out == nil)
+ out = mpnew(0);
+ mpexp(in, rsa->ek, rsa->n, out);
+ return out;
+}
diff --git a/src/libsec/port/rsafill.c b/src/libsec/port/rsafill.c
new file mode 100644
index 0000000..f514b07
--- /dev/null
+++ b/src/libsec/port/rsafill.c
@@ -0,0 +1,61 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+RSApriv*
+rsafill(mpint *n, mpint *e, mpint *d, mpint *p, mpint *q)
+{
+ mpint *c2, *kq, *kp, *x;
+ RSApriv *rsa;
+
+ // make sure we're not being hoodwinked
+ if(!probably_prime(p, 10) || !probably_prime(q, 10)){
+ werrstr("rsafill: p or q not prime");
+ return nil;
+ }
+ x = mpnew(0);
+ mpmul(p, q, x);
+ if(mpcmp(n, x) != 0){
+ werrstr("rsafill: n != p*q");
+ mpfree(x);
+ return nil;
+ }
+ c2 = mpnew(0);
+ mpsub(p, mpone, c2);
+ mpsub(q, mpone, x);
+ mpmul(c2, x, x);
+ mpmul(e, d, c2);
+ mpmod(c2, x, x);
+ if(mpcmp(x, mpone) != 0){
+ werrstr("rsafill: e*d != 1 mod (p-1)*(q-1)");
+ mpfree(x);
+ mpfree(c2);
+ return nil;
+ }
+
+ // compute chinese remainder coefficient
+ mpinvert(p, q, c2);
+
+ // for crt a**k mod p == (a**(k mod p-1)) mod p
+ kq = mpnew(0);
+ kp = mpnew(0);
+ mpsub(p, mpone, x);
+ mpmod(d, x, kp);
+ mpsub(q, mpone, x);
+ mpmod(d, x, kq);
+
+ rsa = rsaprivalloc();
+ rsa->pub.ek = mpcopy(e);
+ rsa->pub.n = mpcopy(n);
+ rsa->dk = mpcopy(d);
+ rsa->kp = kp;
+ rsa->kq = kq;
+ rsa->p = mpcopy(p);
+ rsa->q = mpcopy(q);
+ rsa->c2 = c2;
+
+ mpfree(x);
+
+ return rsa;
+}
+
diff --git a/src/libsec/port/rsagen.c b/src/libsec/port/rsagen.c
new file mode 100644
index 0000000..ebe1079
--- /dev/null
+++ b/src/libsec/port/rsagen.c
@@ -0,0 +1,70 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+RSApriv*
+rsagen(int nlen, int elen, int rounds)
+{
+ mpint *p, *q, *e, *d, *phi, *n, *t1, *t2, *kp, *kq, *c2;
+ RSApriv *rsa;
+
+ p = mpnew(nlen/2);
+ q = mpnew(nlen/2);
+ n = mpnew(nlen);
+ e = mpnew(elen);
+ d = mpnew(0);
+ phi = mpnew(nlen);
+
+ // create the prime factors and euclid's function
+ genprime(p, nlen/2, rounds);
+ genprime(q, nlen - mpsignif(p) + 1, rounds);
+ mpmul(p, q, n);
+ mpsub(p, mpone, e);
+ mpsub(q, mpone, d);
+ mpmul(e, d, phi);
+
+ // find an e relatively prime to phi
+ t1 = mpnew(0);
+ t2 = mpnew(0);
+ mprand(elen, genrandom, e);
+ if(mpcmp(e,mptwo) <= 0)
+ itomp(3, e);
+ // See Menezes et al. p.291 "8.8 Note (selecting primes)" for discussion
+ // of the merits of various choices of primes and exponents. e=3 is a
+ // common and recommended exponent, but doesn't necessarily work here
+ // because we chose strong rather than safe primes.
+ for(;;){
+ mpextendedgcd(e, phi, t1, d, t2);
+ if(mpcmp(t1, mpone) == 0)
+ break;
+ mpadd(mpone, e, e);
+ }
+ mpfree(t1);
+ mpfree(t2);
+
+ // compute chinese remainder coefficient
+ c2 = mpnew(0);
+ mpinvert(p, q, c2);
+
+ // for crt a**k mod p == (a**(k mod p-1)) mod p
+ kq = mpnew(0);
+ kp = mpnew(0);
+ mpsub(p, mpone, phi);
+ mpmod(d, phi, kp);
+ mpsub(q, mpone, phi);
+ mpmod(d, phi, kq);
+
+ rsa = rsaprivalloc();
+ rsa->pub.ek = e;
+ rsa->pub.n = n;
+ rsa->dk = d;
+ rsa->kp = kp;
+ rsa->kq = kq;
+ rsa->p = p;
+ rsa->q = q;
+ rsa->c2 = c2;
+
+ mpfree(phi);
+
+ return rsa;
+}
diff --git a/src/libsec/port/rsaprivtopub.c b/src/libsec/port/rsaprivtopub.c
new file mode 100644
index 0000000..d464c87
--- /dev/null
+++ b/src/libsec/port/rsaprivtopub.c
@@ -0,0 +1,16 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+RSApub*
+rsaprivtopub(RSApriv *priv)
+{
+ RSApub *pub;
+
+ pub = rsapuballoc();
+ if(pub == nil)
+ return nil;
+ pub->n = mpcopy(priv->pub.n);
+ pub->ek = mpcopy(priv->pub.ek);
+ return pub;
+}
diff --git a/src/libsec/port/rsatest.c b/src/libsec/port/rsatest.c
new file mode 100644
index 0000000..9ff66b5
--- /dev/null
+++ b/src/libsec/port/rsatest.c
@@ -0,0 +1,57 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+#include <bio.h>
+
+void
+main(void)
+{
+ RSApriv *rsa;
+ Biobuf b;
+ char *p;
+ int n;
+ mpint *clr, *enc, *clr2;
+ uchar buf[4096];
+ uchar *e;
+ vlong start;
+
+ fmtinstall('B', mpconv);
+
+ rsa = rsagen(1024, 16, 0);
+ if(rsa == nil)
+ sysfatal("rsagen");
+ Binit(&b, 0, OREAD);
+ clr = mpnew(0);
+ clr2 = mpnew(0);
+ enc = mpnew(0);
+
+ strtomp("123456789abcdef123456789abcdef123456789abcdef123456789abcdef", nil, 16, clr);
+ rsaencrypt(&rsa->pub, clr, enc);
+
+ start = nsec();
+ for(n = 0; n < 10; n++)
+ rsadecrypt(rsa, enc, clr);
+ print("%lld\n", nsec()-start);
+
+ start = nsec();
+ for(n = 0; n < 10; n++)
+ mpexp(enc, rsa->dk, rsa->pub.n, clr2);
+ print("%lld\n", nsec()-start);
+
+ if(mpcmp(clr, clr2) != 0)
+ print("%B != %B\n", clr, clr2);
+
+ print("> ");
+ while(p = Brdline(&b, '\n')){
+ n = Blinelen(&b);
+ letomp((uchar*)p, n, clr);
+ print("clr %B\n", clr);
+ rsaencrypt(&rsa->pub, clr, enc);
+ print("enc %B\n", enc);
+ rsadecrypt(rsa, enc, clr);
+ print("clr %B\n", clr);
+ n = mptole(clr, buf, sizeof(buf), nil);
+ write(1, buf, n);
+ print("> ");
+ }
+}
diff --git a/src/libsec/port/sha1pickle.c b/src/libsec/port/sha1pickle.c
new file mode 100644
index 0000000..6139567
--- /dev/null
+++ b/src/libsec/port/sha1pickle.c
@@ -0,0 +1,38 @@
+#include "os.h"
+#include <libsec.h>
+
+char*
+sha1pickle(SHA1state *s)
+{
+ char *p;
+ int m, n;
+
+ m = 5*9+4*((s->blen+3)/3);
+ p = malloc(m);
+ if(p == nil)
+ return p;
+ n = sprint(p, "%8.8ux %8.8ux %8.8ux %8.8ux %8.8ux ",
+ s->state[0], s->state[1], s->state[2],
+ s->state[3], s->state[4]);
+ enc64(p+n, m-n, s->buf, s->blen);
+ return p;
+}
+
+SHA1state*
+sha1unpickle(char *p)
+{
+ SHA1state *s;
+
+ s = malloc(sizeof(*s));
+ if(s == nil)
+ return nil;
+ s->state[0] = strtoul(p, &p, 16);
+ s->state[1] = strtoul(p, &p, 16);
+ s->state[2] = strtoul(p, &p, 16);
+ s->state[3] = strtoul(p, &p, 16);
+ s->state[4] = strtoul(p, &p, 16);
+ s->blen = dec64(s->buf, sizeof(s->buf), p, strlen(p));
+ s->malloced = 1;
+ s->seeded = 1;
+ return s;
+}
diff --git a/src/libsec/port/smallprimes.c b/src/libsec/port/smallprimes.c
new file mode 100644
index 0000000..ac23a2f
--- /dev/null
+++ b/src/libsec/port/smallprimes.c
@@ -0,0 +1,1004 @@
+#include "os.h"
+
+ulong smallprimes[1000] = {
+ 2,
+ 3,
+ 5,
+ 7,
+ 11,
+ 13,
+ 17,
+ 19,
+ 23,
+ 29,
+ 31,
+ 37,
+ 41,
+ 43,
+ 47,
+ 53,
+ 59,
+ 61,
+ 67,
+ 71,
+ 73,
+ 79,
+ 83,
+ 89,
+ 97,
+ 101,
+ 103,
+ 107,
+ 109,
+ 113,
+ 127,
+ 131,
+ 137,
+ 139,
+ 149,
+ 151,
+ 157,
+ 163,
+ 167,
+ 173,
+ 179,
+ 181,
+ 191,
+ 193,
+ 197,
+ 199,
+ 211,
+ 223,
+ 227,
+ 229,
+ 233,
+ 239,
+ 241,
+ 251,
+ 257,
+ 263,
+ 269,
+ 271,
+ 277,
+ 281,
+ 283,
+ 293,
+ 307,
+ 311,
+ 313,
+ 317,
+ 331,
+ 337,
+ 347,
+ 349,
+ 353,
+ 359,
+ 367,
+ 373,
+ 379,
+ 383,
+ 389,
+ 397,
+ 401,
+ 409,
+ 419,
+ 421,
+ 431,
+ 433,
+ 439,
+ 443,
+ 449,
+ 457,
+ 461,
+ 463,
+ 467,
+ 479,
+ 487,
+ 491,
+ 499,
+ 503,
+ 509,
+ 521,
+ 523,
+ 541,
+ 547,
+ 557,
+ 563,
+ 569,
+ 571,
+ 577,
+ 587,
+ 593,
+ 599,
+ 601,
+ 607,
+ 613,
+ 617,
+ 619,
+ 631,
+ 641,
+ 643,
+ 647,
+ 653,
+ 659,
+ 661,
+ 673,
+ 677,
+ 683,
+ 691,
+ 701,
+ 709,
+ 719,
+ 727,
+ 733,
+ 739,
+ 743,
+ 751,
+ 757,
+ 761,
+ 769,
+ 773,
+ 787,
+ 797,
+ 809,
+ 811,
+ 821,
+ 823,
+ 827,
+ 829,
+ 839,
+ 853,
+ 857,
+ 859,
+ 863,
+ 877,
+ 881,
+ 883,
+ 887,
+ 907,
+ 911,
+ 919,
+ 929,
+ 937,
+ 941,
+ 947,
+ 953,
+ 967,
+ 971,
+ 977,
+ 983,
+ 991,
+ 997,
+ 1009,
+ 1013,
+ 1019,
+ 1021,
+ 1031,
+ 1033,
+ 1039,
+ 1049,
+ 1051,
+ 1061,
+ 1063,
+ 1069,
+ 1087,
+ 1091,
+ 1093,
+ 1097,
+ 1103,
+ 1109,
+ 1117,
+ 1123,
+ 1129,
+ 1151,
+ 1153,
+ 1163,
+ 1171,
+ 1181,
+ 1187,
+ 1193,
+ 1201,
+ 1213,
+ 1217,
+ 1223,
+ 1229,
+ 1231,
+ 1237,
+ 1249,
+ 1259,
+ 1277,
+ 1279,
+ 1283,
+ 1289,
+ 1291,
+ 1297,
+ 1301,
+ 1303,
+ 1307,
+ 1319,
+ 1321,
+ 1327,
+ 1361,
+ 1367,
+ 1373,
+ 1381,
+ 1399,
+ 1409,
+ 1423,
+ 1427,
+ 1429,
+ 1433,
+ 1439,
+ 1447,
+ 1451,
+ 1453,
+ 1459,
+ 1471,
+ 1481,
+ 1483,
+ 1487,
+ 1489,
+ 1493,
+ 1499,
+ 1511,
+ 1523,
+ 1531,
+ 1543,
+ 1549,
+ 1553,
+ 1559,
+ 1567,
+ 1571,
+ 1579,
+ 1583,
+ 1597,
+ 1601,
+ 1607,
+ 1609,
+ 1613,
+ 1619,
+ 1621,
+ 1627,
+ 1637,
+ 1657,
+ 1663,
+ 1667,
+ 1669,
+ 1693,
+ 1697,
+ 1699,
+ 1709,
+ 1721,
+ 1723,
+ 1733,
+ 1741,
+ 1747,
+ 1753,
+ 1759,
+ 1777,
+ 1783,
+ 1787,
+ 1789,
+ 1801,
+ 1811,
+ 1823,
+ 1831,
+ 1847,
+ 1861,
+ 1867,
+ 1871,
+ 1873,
+ 1877,
+ 1879,
+ 1889,
+ 1901,
+ 1907,
+ 1913,
+ 1931,
+ 1933,
+ 1949,
+ 1951,
+ 1973,
+ 1979,
+ 1987,
+ 1993,
+ 1997,
+ 1999,
+ 2003,
+ 2011,
+ 2017,
+ 2027,
+ 2029,
+ 2039,
+ 2053,
+ 2063,
+ 2069,
+ 2081,
+ 2083,
+ 2087,
+ 2089,
+ 2099,
+ 2111,
+ 2113,
+ 2129,
+ 2131,
+ 2137,
+ 2141,
+ 2143,
+ 2153,
+ 2161,
+ 2179,
+ 2203,
+ 2207,
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+};
diff --git a/src/libsec/port/smallprimetest.c b/src/libsec/port/smallprimetest.c
new file mode 100644
index 0000000..cf94dac
--- /dev/null
+++ b/src/libsec/port/smallprimetest.c
@@ -0,0 +1,1039 @@
+#include "os.h"
+#include <mp.h>
+#include <libsec.h>
+
+static ulong smallprimes[] = {
+ 2, 3, 5, 7, 11, 13, 17, 19, 23, 29,
+ 31, 37, 41, 43, 47, 53, 59, 61, 67, 71,
+ 73, 79, 83, 89, 97, 101, 103, 107, 109, 113,
+ 127, 131, 137, 139, 149, 151, 157, 163, 167, 173,
+ 179, 181, 191, 193, 197, 199, 211, 223, 227, 229,
+ 233, 239, 241, 251, 257, 263, 269, 271, 277, 281,
+ 283, 293, 307, 311, 313, 317, 331, 337, 347, 349,
+ 353, 359, 367, 373, 379, 383, 389, 397, 401, 409,
+ 419, 421, 431, 433, 439, 443, 449, 457, 461, 463,
+ 467, 479, 487, 491, 499, 503, 509, 521, 523, 541,
+ 547, 557, 563, 569, 571, 577, 587, 593, 599, 601,
+ 607, 613, 617, 619, 631, 641, 643, 647, 653, 659,
+ 661, 673, 677, 683, 691, 701, 709, 719, 727, 733,
+ 739, 743, 751, 757, 761, 769, 773, 787, 797, 809,
+ 811, 821, 823, 827, 829, 839, 853, 857, 859, 863,
+ 877, 881, 883, 887, 907, 911, 919, 929, 937, 941,
+ 947, 953, 967, 971, 977, 983, 991, 997, 1009, 1013,
+ 1019, 1021, 1031, 1033, 1039, 1049, 1051, 1061, 1063, 1069,
+ 1087, 1091, 1093, 1097, 1103, 1109, 1117, 1123, 1129, 1151,
+ 1153, 1163, 1171, 1181, 1187, 1193, 1201, 1213, 1217, 1223,
+ 1229, 1231, 1237, 1249, 1259, 1277, 1279, 1283, 1289, 1291,
+ 1297, 1301, 1303, 1307, 1319, 1321, 1327, 1361, 1367, 1373,
+ 1381, 1399, 1409, 1423, 1427, 1429, 1433, 1439, 1447, 1451,
+ 1453, 1459, 1471, 1481, 1483, 1487, 1489, 1493, 1499, 1511,
+ 1523, 1531, 1543, 1549, 1553, 1559, 1567, 1571, 1579, 1583,
+ 1597, 1601, 1607, 1609, 1613, 1619, 1621, 1627, 1637, 1657,
+ 1663, 1667, 1669, 1693, 1697, 1699, 1709, 1721, 1723, 1733,
+ 1741, 1747, 1753, 1759, 1777, 1783, 1787, 1789, 1801, 1811,
+ 1823, 1831, 1847, 1861, 1867, 1871, 1873, 1877, 1879, 1889,
+ 1901, 1907, 1913, 1931, 1933, 1949, 1951, 1973, 1979, 1987,
+ 1993, 1997, 1999, 2003, 2011, 2017, 2027, 2029, 2039, 2053,
+ 2063, 2069, 2081, 2083, 2087, 2089, 2099, 2111, 2113, 2129,
+ 2131, 2137, 2141, 2143, 2153, 2161, 2179, 2203, 2207, 2213,
+ 2221, 2237, 2239, 2243, 2251, 2267, 2269, 2273, 2281, 2287,
+ 2293, 2297, 2309, 2311, 2333, 2339, 2341, 2347, 2351, 2357,
+ 2371, 2377, 2381, 2383, 2389, 2393, 2399, 2411, 2417, 2423,
+ 2437, 2441, 2447, 2459, 2467, 2473, 2477, 2503, 2521, 2531,
+ 2539, 2543, 2549, 2551, 2557, 2579, 2591, 2593, 2609, 2617,
+ 2621, 2633, 2647, 2657, 2659, 2663, 2671, 2677, 2683, 2687,
+ 2689, 2693, 2699, 2707, 2711, 2713, 2719, 2729, 2731, 2741,
+ 2749, 2753, 2767, 2777, 2789, 2791, 2797, 2801, 2803, 2819,
+ 2833, 2837, 2843, 2851, 2857, 2861, 2879, 2887, 2897, 2903,
+ 2909, 2917, 2927, 2939, 2953, 2957, 2963, 2969, 2971, 2999,
+ 3001, 3011, 3019, 3023, 3037, 3041, 3049, 3061, 3067, 3079,
+ 3083, 3089, 3109, 3119, 3121, 3137, 3163, 3167, 3169, 3181,
+ 3187, 3191, 3203, 3209, 3217, 3221, 3229, 3251, 3253, 3257,
+ 3259, 3271, 3299, 3301, 3307, 3313, 3319, 3323, 3329, 3331,
+ 3343, 3347, 3359, 3361, 3371, 3373, 3389, 3391, 3407, 3413,
+ 3433, 3449, 3457, 3461, 3463, 3467, 3469, 3491, 3499, 3511,
+ 3517, 3527, 3529, 3533, 3539, 3541, 3547, 3557, 3559, 3571,
+ 3581, 3583, 3593, 3607, 3613, 3617, 3623, 3631, 3637, 3643,
+ 3659, 3671, 3673, 3677, 3691, 3697, 3701, 3709, 3719, 3727,
+ 3733, 3739, 3761, 3767, 3769, 3779, 3793, 3797, 3803, 3821,
+ 3823, 3833, 3847, 3851, 3853, 3863, 3877, 3881, 3889, 3907,
+ 3911, 3917, 3919, 3923, 3929, 3931, 3943, 3947, 3967, 3989,
+ 4001, 4003, 4007, 4013, 4019, 4021, 4027, 4049, 4051, 4057,
+ 4073, 4079, 4091, 4093, 4099, 4111, 4127, 4129, 4133, 4139,
+ 4153, 4157, 4159, 4177, 4201, 4211, 4217, 4219, 4229, 4231,
+ 4241, 4243, 4253, 4259, 4261, 4271, 4273, 4283, 4289, 4297,
+ 4327, 4337, 4339, 4349, 4357, 4363, 4373, 4391, 4397, 4409,
+ 4421, 4423, 4441, 4447, 4451, 4457, 4463, 4481, 4483, 4493,
+ 4507, 4513, 4517, 4519, 4523, 4547, 4549, 4561, 4567, 4583,
+ 4591, 4597, 4603, 4621, 4637, 4639, 4643, 4649, 4651, 4657,
+ 4663, 4673, 4679, 4691, 4703, 4721, 4723, 4729, 4733, 4751,
+ 4759, 4783, 4787, 4789, 4793, 4799, 4801, 4813, 4817, 4831,
+ 4861, 4871, 4877, 4889, 4903, 4909, 4919, 4931, 4933, 4937,
+ 4943, 4951, 4957, 4967, 4969, 4973, 4987, 4993, 4999, 5003,
+ 5009, 5011, 5021, 5023, 5039, 5051, 5059, 5077, 5081, 5087,
+ 5099, 5101, 5107, 5113, 5119, 5147, 5153, 5167, 5171, 5179,
+ 5189, 5197, 5209, 5227, 5231, 5233, 5237, 5261, 5273, 5279,
+ 5281, 5297, 5303, 5309, 5323, 5333, 5347, 5351, 5381, 5387,
+ 5393, 5399, 5407, 5413, 5417, 5419, 5431, 5437, 5441, 5443,
+ 5449, 5471, 5477, 5479, 5483, 5501, 5503, 5507, 5519, 5521,
+ 5527, 5531, 5557, 5563, 5569, 5573, 5581, 5591, 5623, 5639,
+ 5641, 5647, 5651, 5653, 5657, 5659, 5669, 5683, 5689, 5693,
+ 5701, 5711, 5717, 5737, 5741, 5743, 5749, 5779, 5783, 5791,
+ 5801, 5807, 5813, 5821, 5827, 5839, 5843, 5849, 5851, 5857,
+ 5861, 5867, 5869, 5879, 5881, 5897, 5903, 5923, 5927, 5939,
+ 5953, 5981, 5987, 6007, 6011, 6029, 6037, 6043, 6047, 6053,
+ 6067, 6073, 6079, 6089, 6091, 6101, 6113, 6121, 6131, 6133,
+ 6143, 6151, 6163, 6173, 6197, 6199, 6203, 6211, 6217, 6221,
+ 6229, 6247, 6257, 6263, 6269, 6271, 6277, 6287, 6299, 6301,
+ 6311, 6317, 6323, 6329, 6337, 6343, 6353, 6359, 6361, 6367,
+ 6373, 6379, 6389, 6397, 6421, 6427, 6449, 6451, 6469, 6473,
+ 6481, 6491, 6521, 6529, 6547, 6551, 6553, 6563, 6569, 6571,
+ 6577, 6581, 6599, 6607, 6619, 6637, 6653, 6659, 6661, 6673,
+ 6679, 6689, 6691, 6701, 6703, 6709, 6719, 6733, 6737, 6761,
+ 6763, 6779, 6781, 6791, 6793, 6803, 6823, 6827, 6829, 6833,
+ 6841, 6857, 6863, 6869, 6871, 6883, 6899, 6907, 6911, 6917,
+ 6947, 6949, 6959, 6961, 6967, 6971, 6977, 6983, 6991, 6997,
+ 7001, 7013, 7019, 7027, 7039, 7043, 7057, 7069, 7079, 7103,
+ 7109, 7121, 7127, 7129, 7151, 7159, 7177, 7187, 7193, 7207,
+ 7211, 7213, 7219, 7229, 7237, 7243, 7247, 7253, 7283, 7297,
+ 7307, 7309, 7321, 7331, 7333, 7349, 7351, 7369, 7393, 7411,
+ 7417, 7433, 7451, 7457, 7459, 7477, 7481, 7487, 7489, 7499,
+ 7507, 7517, 7523, 7529, 7537, 7541, 7547, 7549, 7559, 7561,
+ 7573, 7577, 7583, 7589, 7591, 7603, 7607, 7621, 7639, 7643,
+ 7649, 7669, 7673, 7681, 7687, 7691, 7699, 7703, 7717, 7723,
+ 7727, 7741, 7753, 7757, 7759, 7789, 7793, 7817, 7823, 7829,
+ 7841, 7853, 7867, 7873, 7877, 7879, 7883, 7901, 7907, 7919,
+ 7927, 7933, 7937, 7949, 7951, 7963, 7993, 8009, 8011, 8017,
+ 8039, 8053, 8059, 8069, 8081, 8087, 8089, 8093, 8101, 8111,
+ 8117, 8123, 8147, 8161, 8167, 8171, 8179, 8191, 8209, 8219,
+ 8221, 8231, 8233, 8237, 8243, 8263, 8269, 8273, 8287, 8291,
+ 8293, 8297, 8311, 8317, 8329, 8353, 8363, 8369, 8377, 8387,
+ 8389, 8419, 8423, 8429, 8431, 8443, 8447, 8461, 8467, 8501,
+ 8513, 8521, 8527, 8537, 8539, 8543, 8563, 8573, 8581, 8597,
+ 8599, 8609, 8623, 8627, 8629, 8641, 8647, 8663, 8669, 8677,
+ 8681, 8689, 8693, 8699, 8707, 8713, 8719, 8731, 8737, 8741,
+ 8747, 8753, 8761, 8779, 8783, 8803, 8807, 8819, 8821, 8831,
+ 8837, 8839, 8849, 8861, 8863, 8867, 8887, 8893, 8923, 8929,
+ 8933, 8941, 8951, 8963, 8969, 8971, 8999, 9001, 9007, 9011,
+ 9013, 9029, 9041, 9043, 9049, 9059, 9067, 9091, 9103, 9109,
+ 9127, 9133, 9137, 9151, 9157, 9161, 9173, 9181, 9187, 9199,
+ 9203, 9209, 9221, 9227, 9239, 9241, 9257, 9277, 9281, 9283,
+ 9293, 9311, 9319, 9323, 9337, 9341, 9343, 9349, 9371, 9377,
+ 9391, 9397, 9403, 9413, 9419, 9421, 9431, 9433, 9437, 9439,
+ 9461, 9463, 9467, 9473, 9479, 9491, 9497, 9511, 9521, 9533,
+ 9539, 9547, 9551, 9587, 9601, 9613, 9619, 9623, 9629, 9631,
+ 9643, 9649, 9661, 9677, 9679, 9689, 9697, 9719, 9721, 9733,
+ 9739, 9743, 9749, 9767, 9769, 9781, 9787, 9791, 9803, 9811,
+ 9817, 9829, 9833, 9839, 9851, 9857, 9859, 9871, 9883, 9887,
+ 9901, 9907, 9923, 9929, 9931, 9941, 9949, 9967, 9973, 10007,
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+ 85037, 85049, 85061, 85081, 85087, 85091, 85093, 85103, 85109, 85121,
+ 85133, 85147, 85159, 85193, 85199, 85201, 85213, 85223, 85229, 85237,
+ 85243, 85247, 85259, 85297, 85303, 85313, 85331, 85333, 85361, 85363,
+ 85369, 85381, 85411, 85427, 85429, 85439, 85447, 85451, 85453, 85469,
+ 85487, 85513, 85517, 85523, 85531, 85549, 85571, 85577, 85597, 85601,
+ 85607, 85619, 85621, 85627, 85639, 85643, 85661, 85667, 85669, 85691,
+ 85703, 85711, 85717, 85733, 85751, 85781, 85793, 85817, 85819, 85829,
+ 85831, 85837, 85843, 85847, 85853, 85889, 85903, 85909, 85931, 85933,
+ 85991, 85999, 86011, 86017, 86027, 86029, 86069, 86077, 86083, 86111,
+ 86113, 86117, 86131, 86137, 86143, 86161, 86171, 86179, 86183, 86197,
+ 86201, 86209, 86239, 86243, 86249, 86257, 86263, 86269, 86287, 86291,
+ 86293, 86297, 86311, 86323, 86341, 86351, 86353, 86357, 86369, 86371,
+ 86381, 86389, 86399, 86413, 86423, 86441, 86453, 86461, 86467, 86477,
+ 86491, 86501, 86509, 86531, 86533, 86539, 86561, 86573, 86579, 86587,
+ 86599, 86627, 86629, 86677, 86689, 86693, 86711, 86719, 86729, 86743,
+ 86753, 86767, 86771, 86783, 86813, 86837, 86843, 86851, 86857, 86861,
+ 86869, 86923, 86927, 86929, 86939, 86951, 86959, 86969, 86981, 86993,
+ 87011, 87013, 87037, 87041, 87049, 87071, 87083, 87103, 87107, 87119,
+ 87121, 87133, 87149, 87151, 87179, 87181, 87187, 87211, 87221, 87223,
+ 87251, 87253, 87257, 87277, 87281, 87293, 87299, 87313, 87317, 87323,
+ 87337, 87359, 87383, 87403, 87407, 87421, 87427, 87433, 87443, 87473,
+ 87481, 87491, 87509, 87511, 87517, 87523, 87539, 87541, 87547, 87553,
+ 87557, 87559, 87583, 87587, 87589, 87613, 87623, 87629, 87631, 87641,
+ 87643, 87649, 87671, 87679, 87683, 87691, 87697, 87701, 87719, 87721,
+ 87739, 87743, 87751, 87767, 87793, 87797, 87803, 87811, 87833, 87853,
+ 87869, 87877, 87881, 87887, 87911, 87917, 87931, 87943, 87959, 87961,
+ 87973, 87977, 87991, 88001, 88003, 88007, 88019, 88037, 88069, 88079,
+ 88093, 88117, 88129, 88169, 88177, 88211, 88223, 88237, 88241, 88259,
+ 88261, 88289, 88301, 88321, 88327, 88337, 88339, 88379, 88397, 88411,
+ 88423, 88427, 88463, 88469, 88471, 88493, 88499, 88513, 88523, 88547,
+ 88589, 88591, 88607, 88609, 88643, 88651, 88657, 88661, 88663, 88667,
+ 88681, 88721, 88729, 88741, 88747, 88771, 88789, 88793, 88799, 88801,
+ 88807, 88811, 88813, 88817, 88819, 88843, 88853, 88861, 88867, 88873,
+ 88883, 88897, 88903, 88919, 88937, 88951, 88969, 88993, 88997, 89003,
+ 89009, 89017, 89021, 89041, 89051, 89057, 89069, 89071, 89083, 89087,
+ 89101, 89107, 89113, 89119, 89123, 89137, 89153, 89189, 89203, 89209,
+ 89213, 89227, 89231, 89237, 89261, 89269, 89273, 89293, 89303, 89317,
+ 89329, 89363, 89371, 89381, 89387, 89393, 89399, 89413, 89417, 89431,
+ 89443, 89449, 89459, 89477, 89491, 89501, 89513, 89519, 89521, 89527,
+ 89533, 89561, 89563, 89567, 89591, 89597, 89599, 89603, 89611, 89627,
+ 89633, 89653, 89657, 89659, 89669, 89671, 89681, 89689, 89753, 89759,
+ 89767, 89779, 89783, 89797, 89809, 89819, 89821, 89833, 89839, 89849,
+ 89867, 89891, 89897, 89899, 89909, 89917, 89923, 89939, 89959, 89963,
+ 89977, 89983, 89989, 90001, 90007, 90011, 90017, 90019, 90023, 90031,
+ 90053, 90059, 90067, 90071, 90073, 90089, 90107, 90121, 90127, 90149,
+ 90163, 90173, 90187, 90191, 90197, 90199, 90203, 90217, 90227, 90239,
+ 90247, 90263, 90271, 90281, 90289, 90313, 90353, 90359, 90371, 90373,
+ 90379, 90397, 90401, 90403, 90407, 90437, 90439, 90469, 90473, 90481,
+ 90499, 90511, 90523, 90527, 90529, 90533, 90547, 90583, 90599, 90617,
+ 90619, 90631, 90641, 90647, 90659, 90677, 90679, 90697, 90703, 90709,
+ 90731, 90749, 90787, 90793, 90803, 90821, 90823, 90833, 90841, 90847,
+ 90863, 90887, 90901, 90907, 90911, 90917, 90931, 90947, 90971, 90977,
+ 90989, 90997, 91009, 91019, 91033, 91079, 91081, 91097, 91099, 91121,
+ 91127, 91129, 91139, 91141, 91151, 91153, 91159, 91163, 91183, 91193,
+ 91199, 91229, 91237, 91243, 91249, 91253, 91283, 91291, 91297, 91303,
+ 91309, 91331, 91367, 91369, 91373, 91381, 91387, 91393, 91397, 91411,
+ 91423, 91433, 91453, 91457, 91459, 91463, 91493, 91499, 91513, 91529,
+ 91541, 91571, 91573, 91577, 91583, 91591, 91621, 91631, 91639, 91673,
+ 91691, 91703, 91711, 91733, 91753, 91757, 91771, 91781, 91801, 91807,
+ 91811, 91813, 91823, 91837, 91841, 91867, 91873, 91909, 91921, 91939,
+ 91943, 91951, 91957, 91961, 91967, 91969, 91997, 92003, 92009, 92033,
+ 92041, 92051, 92077, 92083, 92107, 92111, 92119, 92143, 92153, 92173,
+ 92177, 92179, 92189, 92203, 92219, 92221, 92227, 92233, 92237, 92243,
+ 92251, 92269, 92297, 92311, 92317, 92333, 92347, 92353, 92357, 92363,
+ 92369, 92377, 92381, 92383, 92387, 92399, 92401, 92413, 92419, 92431,
+ 92459, 92461, 92467, 92479, 92489, 92503, 92507, 92551, 92557, 92567,
+ 92569, 92581, 92593, 92623, 92627, 92639, 92641, 92647, 92657, 92669,
+ 92671, 92681, 92683, 92693, 92699, 92707, 92717, 92723, 92737, 92753,
+ 92761, 92767, 92779, 92789, 92791, 92801, 92809, 92821, 92831, 92849,
+ 92857, 92861, 92863, 92867, 92893, 92899, 92921, 92927, 92941, 92951,
+ 92957, 92959, 92987, 92993, 93001, 93047, 93053, 93059, 93077, 93083,
+ 93089, 93097, 93103, 93113, 93131, 93133, 93139, 93151, 93169, 93179,
+ 93187, 93199, 93229, 93239, 93241, 93251, 93253, 93257, 93263, 93281,
+ 93283, 93287, 93307, 93319, 93323, 93329, 93337, 93371, 93377, 93383,
+ 93407, 93419, 93427, 93463, 93479, 93481, 93487, 93491, 93493, 93497,
+ 93503, 93523, 93529, 93553, 93557, 93559, 93563, 93581, 93601, 93607,
+ 93629, 93637, 93683, 93701, 93703, 93719, 93739, 93761, 93763, 93787,
+ 93809, 93811, 93827, 93851, 93871, 93887, 93889, 93893, 93901, 93911,
+ 93913, 93923, 93937, 93941, 93949, 93967, 93971, 93979, 93983, 93997,
+ 94007, 94009, 94033, 94049, 94057, 94063, 94079, 94099, 94109, 94111,
+ 94117, 94121, 94151, 94153, 94169, 94201, 94207, 94219, 94229, 94253,
+ 94261, 94273, 94291, 94307, 94309, 94321, 94327, 94331, 94343, 94349,
+ 94351, 94379, 94397, 94399, 94421, 94427, 94433, 94439, 94441, 94447,
+ 94463, 94477, 94483, 94513, 94529, 94531, 94541, 94543, 94547, 94559,
+ 94561, 94573, 94583, 94597, 94603, 94613, 94621, 94649, 94651, 94687,
+ 94693, 94709, 94723, 94727, 94747, 94771, 94777, 94781, 94789, 94793,
+ 94811, 94819, 94823, 94837, 94841, 94847, 94849, 94873, 94889, 94903,
+ 94907, 94933, 94949, 94951, 94961, 94993, 94999, 95003, 95009, 95021,
+ 95027, 95063, 95071, 95083, 95087, 95089, 95093, 95101, 95107, 95111,
+ 95131, 95143, 95153, 95177, 95189, 95191, 95203, 95213, 95219, 95231,
+ 95233, 95239, 95257, 95261, 95267, 95273, 95279, 95287, 95311, 95317,
+ 95327, 95339, 95369, 95383, 95393, 95401, 95413, 95419, 95429, 95441,
+ 95443, 95461, 95467, 95471, 95479, 95483, 95507, 95527, 95531, 95539,
+ 95549, 95561, 95569, 95581, 95597, 95603, 95617, 95621, 95629, 95633,
+ 95651, 95701, 95707, 95713, 95717, 95723, 95731, 95737, 95747, 95773,
+ 95783, 95789, 95791, 95801, 95803, 95813, 95819, 95857, 95869, 95873,
+ 95881, 95891, 95911, 95917, 95923, 95929, 95947, 95957, 95959, 95971,
+ 95987, 95989, 96001, 96013, 96017, 96043, 96053, 96059, 96079, 96097,
+ 96137, 96149, 96157, 96167, 96179, 96181, 96199, 96211, 96221, 96223,
+ 96233, 96259, 96263, 96269, 96281, 96289, 96293, 96323, 96329, 96331,
+ 96337, 96353, 96377, 96401, 96419, 96431, 96443, 96451, 96457, 96461,
+ 96469, 96479, 96487, 96493, 96497, 96517, 96527, 96553, 96557, 96581,
+ 96587, 96589, 96601, 96643, 96661, 96667, 96671, 96697, 96703, 96731,
+ 96737, 96739, 96749, 96757, 96763, 96769, 96779, 96787, 96797, 96799,
+ 96821, 96823, 96827, 96847, 96851, 96857, 96893, 96907, 96911, 96931,
+ 96953, 96959, 96973, 96979, 96989, 96997, 97001, 97003, 97007, 97021,
+ 97039, 97073, 97081, 97103, 97117, 97127, 97151, 97157, 97159, 97169,
+ 97171, 97177, 97187, 97213, 97231, 97241, 97259, 97283, 97301, 97303,
+ 97327, 97367, 97369, 97373, 97379, 97381, 97387, 97397, 97423, 97429,
+ 97441, 97453, 97459, 97463, 97499, 97501, 97511, 97523, 97547, 97549,
+ 97553, 97561, 97571, 97577, 97579, 97583, 97607, 97609, 97613, 97649,
+ 97651, 97673, 97687, 97711, 97729, 97771, 97777, 97787, 97789, 97813,
+ 97829, 97841, 97843, 97847, 97849, 97859, 97861, 97871, 97879, 97883,
+ 97919, 97927, 97931, 97943, 97961, 97967, 97973, 97987, 98009, 98011,
+ 98017, 98041, 98047, 98057, 98081, 98101, 98123, 98129, 98143, 98179,
+ 98207, 98213, 98221, 98227, 98251, 98257, 98269, 98297, 98299, 98317,
+ 98321, 98323, 98327, 98347, 98369, 98377, 98387, 98389, 98407, 98411,
+ 98419, 98429, 98443, 98453, 98459, 98467, 98473, 98479, 98491, 98507,
+ 98519, 98533, 98543, 98561, 98563, 98573, 98597, 98621, 98627, 98639,
+ 98641, 98663, 98669, 98689, 98711, 98713, 98717, 98729, 98731, 98737,
+ 98773, 98779, 98801, 98807, 98809, 98837, 98849, 98867, 98869, 98873,
+ 98887, 98893, 98897, 98899, 98909, 98911, 98927, 98929, 98939, 98947,
+ 98953, 98963, 98981, 98993, 98999, 99013, 99017, 99023, 99041, 99053,
+ 99079, 99083, 99089, 99103, 99109, 99119, 99131, 99133, 99137, 99139,
+ 99149, 99173, 99181, 99191, 99223, 99233, 99241, 99251, 99257, 99259,
+ 99277, 99289, 99317, 99347, 99349, 99367, 99371, 99377, 99391, 99397,
+ 99401, 99409, 99431, 99439, 99469, 99487, 99497, 99523, 99527, 99529,
+ 99551, 99559, 99563, 99571, 99577, 99581, 99607, 99611, 99623, 99643,
+ 99661, 99667, 99679, 99689, 99707, 99709, 99713, 99719, 99721, 99733,
+ 99761, 99767, 99787, 99793, 99809, 99817, 99823, 99829, 99833, 99839,
+ 99859, 99871, 99877, 99881, 99901, 99907, 99923, 99929, 99961, 99971,
+ 99989, 99991, 100003, 100019, 100043, 100049, 100057, 100069, 100103, 100109,
+ 100129, 100151, 100153, 100169, 100183, 100189, 100193, 100207, 100213, 100237,
+ 100267, 100271, 100279, 100291, 100297, 100313, 100333, 100343, 100357, 100361,
+ 100363, 100379, 100391, 100393, 100403, 100411, 100417, 100447, 100459, 100469,
+ 100483, 100493, 100501, 100511, 100517, 100519, 100523, 100537, 100547, 100549,
+ 100559, 100591, 100609, 100613, 100621, 100649, 100669, 100673, 100693, 100699,
+ 100703, 100733, 100741, 100747, 100769, 100787, 100799, 100801, 100811, 100823,
+ 100829, 100847, 100853, 100907, 100913, 100927, 100931, 100937, 100943, 100957,
+ 100981, 100987, 100999, 101009, 101021, 101027, 101051, 101063, 101081, 101089,
+ 101107, 101111, 101113, 101117, 101119, 101141, 101149, 101159, 101161, 101173,
+ 101183, 101197, 101203, 101207, 101209, 101221, 101267, 101273, 101279, 101281,
+ 101287, 101293, 101323, 101333, 101341, 101347, 101359, 101363, 101377, 101383,
+ 101399, 101411, 101419, 101429, 101449, 101467, 101477, 101483, 101489, 101501,
+ 101503, 101513, 101527, 101531, 101533, 101537, 101561, 101573, 101581, 101599,
+ 101603, 101611, 101627, 101641, 101653, 101663, 101681, 101693, 101701, 101719,
+ 101723, 101737, 101741, 101747, 101749, 101771, 101789, 101797, 101807, 101833,
+ 101837, 101839, 101863, 101869, 101873, 101879, 101891, 101917, 101921, 101929,
+ 101939, 101957, 101963, 101977, 101987, 101999, 102001, 102013, 102019, 102023,
+ 102031, 102043, 102059, 102061, 102071, 102077, 102079, 102101, 102103, 102107,
+ 102121, 102139, 102149, 102161, 102181, 102191, 102197, 102199, 102203, 102217,
+ 102229, 102233, 102241, 102251, 102253, 102259, 102293, 102299, 102301, 102317,
+ 102329, 102337, 102359, 102367, 102397, 102407, 102409, 102433, 102437, 102451,
+ 102461, 102481, 102497, 102499, 102503, 102523, 102533, 102539, 102547, 102551,
+ 102559, 102563, 102587, 102593, 102607, 102611, 102643, 102647, 102653, 102667,
+ 102673, 102677, 102679, 102701, 102761, 102763, 102769, 102793, 102797, 102811,
+ 102829, 102841, 102859, 102871, 102877, 102881, 102911, 102913, 102929, 102931,
+ 102953, 102967, 102983, 103001, 103007, 103043, 103049, 103067, 103069, 103079,
+ 103087, 103091, 103093, 103099, 103123, 103141, 103171, 103177, 103183, 103217,
+ 103231, 103237, 103289, 103291, 103307, 103319, 103333, 103349, 103357, 103387,
+ 103391, 103393, 103399, 103409, 103421, 103423, 103451, 103457, 103471, 103483,
+ 103511, 103529, 103549, 103553, 103561, 103567, 103573, 103577, 103583, 103591,
+ 103613, 103619, 103643, 103651, 103657, 103669, 103681, 103687, 103699, 103703,
+ 103723, 103769, 103787, 103801, 103811, 103813, 103837, 103841, 103843, 103867,
+ 103889, 103903, 103913, 103919, 103951, 103963, 103967, 103969, 103979, 103981,
+ 103991, 103993, 103997, 104003, 104009, 104021, 104033, 104047, 104053, 104059,
+ 104087, 104089, 104107, 104113, 104119, 104123, 104147, 104149, 104161, 104173,
+ 104179, 104183, 104207, 104231, 104233, 104239, 104243, 104281, 104287, 104297,
+ 104309, 104311, 104323, 104327, 104347, 104369, 104381, 104383, 104393, 104399,
+ 104417, 104459, 104471, 104473, 104479, 104491, 104513, 104527, 104537, 104543,
+ 104549, 104551, 104561, 104579, 104593, 104597, 104623, 104639, 104651, 104659,
+ 104677, 104681, 104683, 104693, 104701, 104707, 104711, 104717, 104723, 104729,
+};
+
+// return 1 if p is divisable by sp, 0 otherwise
+static int
+divides(mpint *dividend, ulong divisor)
+{
+ mpdigit d[2], q;
+ int i;
+
+ d[1] = 0;
+ for(i = dividend->top-1; i >= 0; i--){
+ d[0] = dividend->p[i];
+ mpdigdiv(d, divisor, &q);
+ d[1] = d[0] - divisor*q;
+ }
+ return d[1] == 0;
+}
+
+// return -1 if p is divisable by one of the small primes, 0 otherwise
+int
+smallprimetest(mpint *p)
+{
+ int i;
+ ulong sp;
+
+ for(i = 0; i < nelem(smallprimes); i++){
+ sp = smallprimes[i];
+ if(p->top == 1 && p->p[0] <= sp)
+ break;
+ if(divides(p, sp))
+ return -1;
+ }
+ return 0;
+}
diff --git a/src/libsec/port/thumb.c b/src/libsec/port/thumb.c
new file mode 100644
index 0000000..cac95a4
--- /dev/null
+++ b/src/libsec/port/thumb.c
@@ -0,0 +1,97 @@
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+#include <auth.h>
+#include <mp.h>
+#include <libsec.h>
+
+enum{ ThumbTab = 1<<10 };
+
+static void *
+emalloc(int n)
+{
+ void *p;
+ if(n==0)
+ n=1;
+ p = malloc(n);
+ if(p == nil){
+ exits("out of memory");
+ }
+ memset(p, 0, n);
+ return p;
+}
+
+void
+freeThumbprints(Thumbprint *table)
+{
+ Thumbprint *hd, *p, *q;
+ for(hd = table; hd < table+ThumbTab; hd++){
+ for(p = hd->next; p; p = q){
+ q = p->next;
+ free(p);
+ }
+ }
+ free(table);
+}
+
+int
+okThumbprint(uchar *sum, Thumbprint *table)
+{
+ Thumbprint *p;
+ int i = ((sum[0]<<8) + sum[1]) & (ThumbTab-1);
+
+ for(p = table[i].next; p; p = p->next)
+ if(memcmp(sum, p->sha1, SHA1dlen) == 0)
+ return 1;
+ return 0;
+}
+
+static void
+loadThumbprints(char *file, Thumbprint *table, Thumbprint *crltab)
+{
+ Thumbprint *entry;
+ Biobuf *bin;
+ char *line, *field[50];
+ uchar sum[SHA1dlen];
+ int i;
+
+ bin = Bopen(file, OREAD);
+ if(bin == nil)
+ return;
+ for(; (line = Brdstr(bin, '\n', 1)) != 0; free(line)){
+ if(tokenize(line, field, nelem(field)) < 2)
+ continue;
+ if(strcmp(field[0], "#include") == 0){
+ loadThumbprints(field[1], table, crltab);
+ continue;
+ }
+ if(strcmp(field[0], "x509") != 0 || strncmp(field[1], "sha1=", strlen("sha1=")) != 0)
+ continue;
+ field[1] += strlen("sha1=");
+ dec16(sum, sizeof(sum), field[1], strlen(field[1]));
+ if(crltab && okThumbprint(sum, crltab))
+ continue;
+ entry = (Thumbprint*)emalloc(sizeof(*entry));
+ memcpy(entry->sha1, sum, SHA1dlen);
+ i = ((sum[0]<<8) + sum[1]) & (ThumbTab-1);
+ entry->next = table[i].next;
+ table[i].next = entry;
+ }
+ Bterm(bin);
+}
+
+Thumbprint *
+initThumbprints(char *ok, char *crl)
+{
+ Thumbprint *table, *crltab = nil;
+
+ if(crl){
+ crltab = emalloc(ThumbTab * sizeof(*table));
+ loadThumbprints(crl, crltab, nil);
+ }
+ table = emalloc(ThumbTab * sizeof(*table));
+ loadThumbprints(ok, table, crltab);
+ free(crltab);
+ return table;
+}
+
diff --git a/src/libsec/port/tlshand.c b/src/libsec/port/tlshand.c
new file mode 100644
index 0000000..68c9808
--- /dev/null
+++ b/src/libsec/port/tlshand.c
@@ -0,0 +1,2291 @@
+#include <u.h>
+#include <libc.h>
+#include <bio.h>
+#include <auth.h>
+#include <mp.h>
+#include <libsec.h>
+
+// The main groups of functions are:
+// client/server - main handshake protocol definition
+// message functions - formating handshake messages
+// cipher choices - catalog of digest and encrypt algorithms
+// security functions - PKCS#1, sslHMAC, session keygen
+// general utility functions - malloc, serialization
+// The handshake protocol builds on the TLS/SSL3 record layer protocol,
+// which is implemented in kernel device #a. See also /lib/rfc/rfc2246.
+
+enum {
+ TLSFinishedLen = 12,
+ SSL3FinishedLen = MD5dlen+SHA1dlen,
+ MaxKeyData = 104, // amount of secret we may need
+ MaxChunk = 1<<14,
+ RandomSize = 32,
+ SidSize = 32,
+ MasterSecretSize = 48,
+ AQueue = 0,
+ AFlush = 1,
+};
+
+typedef struct TlsSec TlsSec;
+
+typedef struct Bytes{
+ int len;
+ uchar data[1]; // [len]
+} Bytes;
+
+typedef struct Ints{
+ int len;
+ int data[1]; // [len]
+} Ints;
+
+typedef struct Algs{
+ char *enc;
+ char *digest;
+ int nsecret;
+ int tlsid;
+ int ok;
+} Algs;
+
+typedef struct Finished{
+ uchar verify[SSL3FinishedLen];
+ int n;
+} Finished;
+
+typedef struct TlsConnection{
+ TlsSec *sec; // security management goo
+ int hand, ctl; // record layer file descriptors
+ int erred; // set when tlsError called
+ int (*trace)(char*fmt, ...); // for debugging
+ int version; // protocol we are speaking
+ int verset; // version has been set
+ int ver2hi; // server got a version 2 hello
+ int isClient; // is this the client or server?
+ Bytes *sid; // SessionID
+ Bytes *cert; // only last - no chain
+
+ Lock statelk;
+ int state; // must be set using setstate
+
+ // input buffer for handshake messages
+ uchar buf[MaxChunk+2048];
+ uchar *rp, *ep;
+
+ uchar crandom[RandomSize]; // client random
+ uchar srandom[RandomSize]; // server random
+ int clientVersion; // version in ClientHello
+ char *digest; // name of digest algorithm to use
+ char *enc; // name of encryption algorithm to use
+ int nsecret; // amount of secret data to init keys
+
+ // for finished messages
+ MD5state hsmd5; // handshake hash
+ SHAstate hssha1; // handshake hash
+ Finished finished;
+} TlsConnection;
+
+typedef struct Msg{
+ int tag;
+ union {
+ struct {
+ int version;
+ uchar random[RandomSize];
+ Bytes* sid;
+ Ints* ciphers;
+ Bytes* compressors;
+ } clientHello;
+ struct {
+ int version;
+ uchar random[RandomSize];
+ Bytes* sid;
+ int cipher;
+ int compressor;
+ } serverHello;
+ struct {
+ int ncert;
+ Bytes **certs;
+ } certificate;
+ struct {
+ Bytes *types;
+ int nca;
+ Bytes **cas;
+ } certificateRequest;
+ struct {
+ Bytes *key;
+ } clientKeyExchange;
+ Finished finished;
+ } u;
+} Msg;
+
+struct TlsSec{
+ char *server; // name of remote; nil for server
+ int ok; // <0 killed; ==0 in progress; >0 reusable
+ RSApub *rsapub;
+ AuthRpc *rpc; // factotum for rsa private key
+ uchar sec[MasterSecretSize]; // master secret
+ uchar crandom[RandomSize]; // client random
+ uchar srandom[RandomSize]; // server random
+ int clientVers; // version in ClientHello
+ int vers; // final version
+ // byte generation and handshake checksum
+ void (*prf)(uchar*, int, uchar*, int, char*, uchar*, int, uchar*, int);
+ void (*setFinished)(TlsSec*, MD5state, SHAstate, uchar*, int);
+ int nfin;
+};
+
+
+enum {
+ TLSVersion = 0x0301,
+ SSL3Version = 0x0300,
+ ProtocolVersion = 0x0301, // maximum version we speak
+ MinProtoVersion = 0x0300, // limits on version we accept
+ MaxProtoVersion = 0x03ff,
+};
+
+// handshake type
+enum {
+ HHelloRequest,
+ HClientHello,
+ HServerHello,
+ HSSL2ClientHello = 9, /* local convention; see devtls.c */
+ HCertificate = 11,
+ HServerKeyExchange,
+ HCertificateRequest,
+ HServerHelloDone,
+ HCertificateVerify,
+ HClientKeyExchange,
+ HFinished = 20,
+ HMax
+};
+
+// alerts
+enum {
+ ECloseNotify = 0,
+ EUnexpectedMessage = 10,
+ EBadRecordMac = 20,
+ EDecryptionFailed = 21,
+ ERecordOverflow = 22,
+ EDecompressionFailure = 30,
+ EHandshakeFailure = 40,
+ ENoCertificate = 41,
+ EBadCertificate = 42,
+ EUnsupportedCertificate = 43,
+ ECertificateRevoked = 44,
+ ECertificateExpired = 45,
+ ECertificateUnknown = 46,
+ EIllegalParameter = 47,
+ EUnknownCa = 48,
+ EAccessDenied = 49,
+ EDecodeError = 50,
+ EDecryptError = 51,
+ EExportRestriction = 60,
+ EProtocolVersion = 70,
+ EInsufficientSecurity = 71,
+ EInternalError = 80,
+ EUserCanceled = 90,
+ ENoRenegotiation = 100,
+ EMax = 256
+};
+
+// cipher suites
+enum {
+ TLS_NULL_WITH_NULL_NULL = 0x0000,
+ TLS_RSA_WITH_NULL_MD5 = 0x0001,
+ TLS_RSA_WITH_NULL_SHA = 0x0002,
+ TLS_RSA_EXPORT_WITH_RC4_40_MD5 = 0x0003,
+ TLS_RSA_WITH_RC4_128_MD5 = 0x0004,
+ TLS_RSA_WITH_RC4_128_SHA = 0x0005,
+ TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5 = 0X0006,
+ TLS_RSA_WITH_IDEA_CBC_SHA = 0X0007,
+ TLS_RSA_EXPORT_WITH_DES40_CBC_SHA = 0X0008,
+ TLS_RSA_WITH_DES_CBC_SHA = 0X0009,
+ TLS_RSA_WITH_3DES_EDE_CBC_SHA = 0X000A,
+ TLS_DH_DSS_EXPORT_WITH_DES40_CBC_SHA = 0X000B,
+ TLS_DH_DSS_WITH_DES_CBC_SHA = 0X000C,
+ TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA = 0X000D,
+ TLS_DH_RSA_EXPORT_WITH_DES40_CBC_SHA = 0X000E,
+ TLS_DH_RSA_WITH_DES_CBC_SHA = 0X000F,
+ TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA = 0X0010,
+ TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA = 0X0011,
+ TLS_DHE_DSS_WITH_DES_CBC_SHA = 0X0012,
+ TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA = 0X0013, // ZZZ must be implemented for tls1.0 compliance
+ TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA = 0X0014,
+ TLS_DHE_RSA_WITH_DES_CBC_SHA = 0X0015,
+ TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA = 0X0016,
+ TLS_DH_anon_EXPORT_WITH_RC4_40_MD5 = 0x0017,
+ TLS_DH_anon_WITH_RC4_128_MD5 = 0x0018,
+ TLS_DH_anon_EXPORT_WITH_DES40_CBC_SHA = 0X0019,
+ TLS_DH_anon_WITH_DES_CBC_SHA = 0X001A,
+ TLS_DH_anon_WITH_3DES_EDE_CBC_SHA = 0X001B,
+
+ TLS_RSA_WITH_AES_128_CBC_SHA = 0X002f, // aes, aka rijndael with 128 bit blocks
+ TLS_DH_DSS_WITH_AES_128_CBC_SHA = 0X0030,
+ TLS_DH_RSA_WITH_AES_128_CBC_SHA = 0X0031,
+ TLS_DHE_DSS_WITH_AES_128_CBC_SHA = 0X0032,
+ TLS_DHE_RSA_WITH_AES_128_CBC_SHA = 0X0033,
+ TLS_DH_anon_WITH_AES_128_CBC_SHA = 0X0034,
+ TLS_RSA_WITH_AES_256_CBC_SHA = 0X0035,
+ TLS_DH_DSS_WITH_AES_256_CBC_SHA = 0X0036,
+ TLS_DH_RSA_WITH_AES_256_CBC_SHA = 0X0037,
+ TLS_DHE_DSS_WITH_AES_256_CBC_SHA = 0X0038,
+ TLS_DHE_RSA_WITH_AES_256_CBC_SHA = 0X0039,
+ TLS_DH_anon_WITH_AES_256_CBC_SHA = 0X003A,
+ CipherMax
+};
+
+// compression methods
+enum {
+ CompressionNull = 0,
+ CompressionMax
+};
+
+static Algs cipherAlgs[] = {
+ {"rc4_128", "md5", 2 * (16 + MD5dlen), TLS_RSA_WITH_RC4_128_MD5},
+ {"rc4_128", "sha1", 2 * (16 + SHA1dlen), TLS_RSA_WITH_RC4_128_SHA},
+ {"3des_ede_cbc","sha1",2*(4*8+SHA1dlen), TLS_RSA_WITH_3DES_EDE_CBC_SHA},
+};
+
+static uchar compressors[] = {
+ CompressionNull,
+};
+
+static TlsConnection *tlsServer2(int ctl, int hand, uchar *cert, int ncert, int (*trace)(char*fmt, ...));
+static TlsConnection *tlsClient2(int ctl, int hand, uchar *csid, int ncsid, int (*trace)(char*fmt, ...));
+
+static void msgClear(Msg *m);
+static char* msgPrint(char *buf, int n, Msg *m);
+static int msgRecv(TlsConnection *c, Msg *m);
+static int msgSend(TlsConnection *c, Msg *m, int act);
+static void tlsError(TlsConnection *c, int err, char *msg, ...);
+/* #pragma varargck argpos tlsError 3*/
+static int setVersion(TlsConnection *c, int version);
+static int finishedMatch(TlsConnection *c, Finished *f);
+static void tlsConnectionFree(TlsConnection *c);
+
+static int setAlgs(TlsConnection *c, int a);
+static int okCipher(Ints *cv);
+static int okCompression(Bytes *cv);
+static int initCiphers(void);
+static Ints* makeciphers(void);
+
+static TlsSec* tlsSecInits(int cvers, uchar *csid, int ncsid, uchar *crandom, uchar *ssid, int *nssid, uchar *srandom);
+static int tlsSecSecrets(TlsSec *sec, int vers, uchar *epm, int nepm, uchar *kd, int nkd);
+static TlsSec* tlsSecInitc(int cvers, uchar *crandom);
+static int tlsSecSecretc(TlsSec *sec, uchar *sid, int nsid, uchar *srandom, uchar *cert, int ncert, int vers, uchar **epm, int *nepm, uchar *kd, int nkd);
+static int tlsSecFinished(TlsSec *sec, MD5state md5, SHAstate sha1, uchar *fin, int nfin, int isclient);
+static void tlsSecOk(TlsSec *sec);
+static void tlsSecKill(TlsSec *sec);
+static void tlsSecClose(TlsSec *sec);
+static void setMasterSecret(TlsSec *sec, Bytes *pm);
+static void serverMasterSecret(TlsSec *sec, uchar *epm, int nepm);
+static void setSecrets(TlsSec *sec, uchar *kd, int nkd);
+static int clientMasterSecret(TlsSec *sec, RSApub *pub, uchar **epm, int *nepm);
+static Bytes *pkcs1_encrypt(Bytes* data, RSApub* key, int blocktype);
+static Bytes *pkcs1_decrypt(TlsSec *sec, uchar *epm, int nepm);
+static void tlsSetFinished(TlsSec *sec, MD5state hsmd5, SHAstate hssha1, uchar *finished, int isClient);
+static void sslSetFinished(TlsSec *sec, MD5state hsmd5, SHAstate hssha1, uchar *finished, int isClient);
+static void sslPRF(uchar *buf, int nbuf, uchar *key, int nkey, char *label,
+ uchar *seed0, int nseed0, uchar *seed1, int nseed1);
+static int setVers(TlsSec *sec, int version);
+
+static AuthRpc* factotum_rsa_open(uchar *cert, int certlen);
+static mpint* factotum_rsa_decrypt(AuthRpc *rpc, mpint *cipher);
+static void factotum_rsa_close(AuthRpc*rpc);
+
+static void* emalloc(int);
+static void* erealloc(void*, int);
+static void put32(uchar *p, u32int);
+static void put24(uchar *p, int);
+static void put16(uchar *p, int);
+static u32int get32(uchar *p);
+static int get24(uchar *p);
+static int get16(uchar *p);
+static Bytes* newbytes(int len);
+static Bytes* makebytes(uchar* buf, int len);
+static void freebytes(Bytes* b);
+static Ints* newints(int len);
+static Ints* makeints(int* buf, int len);
+static void freeints(Ints* b);
+
+//================= client/server ========================
+
+// push TLS onto fd, returning new (application) file descriptor
+// or -1 if error.
+int
+tlsServer(int fd, TLSconn *conn)
+{
+ char buf[8];
+ char dname[64];
+ int n, data, ctl, hand;
+ TlsConnection *tls;
+
+ if(conn == nil)
+ return -1;
+ ctl = open("#a/tls/clone", ORDWR);
+ if(ctl < 0)
+ return -1;
+ n = read(ctl, buf, sizeof(buf)-1);
+ if(n < 0){
+ close(ctl);
+ return -1;
+ }
+ buf[n] = 0;
+ sprint(conn->dir, "#a/tls/%s", buf);
+ sprint(dname, "#a/tls/%s/hand", buf);
+ hand = open(dname, ORDWR);
+ if(hand < 0){
+ close(ctl);
+ return -1;
+ }
+ fprint(ctl, "fd %d 0x%x", fd, ProtocolVersion);
+ tls = tlsServer2(ctl, hand, conn->cert, conn->certlen, conn->trace);
+ sprint(dname, "#a/tls/%s/data", buf);
+ data = open(dname, ORDWR);
+ close(fd);
+ close(hand);
+ close(ctl);
+ if(data < 0){
+ return -1;
+ }
+ if(tls == nil){
+ close(data);
+ return -1;
+ }
+ if(conn->cert)
+ free(conn->cert);
+ conn->cert = 0; // client certificates are not yet implemented
+ conn->certlen = 0;
+ conn->sessionIDlen = tls->sid->len;
+ conn->sessionID = emalloc(conn->sessionIDlen);
+ memcpy(conn->sessionID, tls->sid->data, conn->sessionIDlen);
+ tlsConnectionFree(tls);
+ return data;
+}
+
+// push TLS onto fd, returning new (application) file descriptor
+// or -1 if error.
+int
+tlsClient(int fd, TLSconn *conn)
+{
+ char buf[8];
+ char dname[64];
+ int n, data, ctl, hand;
+ TlsConnection *tls;
+
+ if(!conn)
+ return -1;
+ ctl = open("#a/tls/clone", ORDWR);
+ if(ctl < 0)
+ return -1;
+ n = read(ctl, buf, sizeof(buf)-1);
+ if(n < 0){
+ close(ctl);
+ return -1;
+ }
+ buf[n] = 0;
+ sprint(conn->dir, "#a/tls/%s", buf);
+ sprint(dname, "#a/tls/%s/hand", buf);
+ hand = open(dname, ORDWR);
+ if(hand < 0){
+ close(ctl);
+ return -1;
+ }
+ sprint(dname, "#a/tls/%s/data", buf);
+ data = open(dname, ORDWR);
+ if(data < 0)
+ return -1;
+ fprint(ctl, "fd %d 0x%x", fd, ProtocolVersion);
+ tls = tlsClient2(ctl, hand, conn->sessionID, conn->sessionIDlen, conn->trace);
+ close(fd);
+ close(hand);
+ close(ctl);
+ if(tls == nil){
+ close(data);
+ return -1;
+ }
+ conn->certlen = tls->cert->len;
+ conn->cert = emalloc(conn->certlen);
+ memcpy(conn->cert, tls->cert->data, conn->certlen);
+ conn->sessionIDlen = tls->sid->len;
+ conn->sessionID = emalloc(conn->sessionIDlen);
+ memcpy(conn->sessionID, tls->sid->data, conn->sessionIDlen);
+ tlsConnectionFree(tls);
+ return data;
+}
+
+static TlsConnection *
+tlsServer2(int ctl, int hand, uchar *cert, int ncert, int (*trace)(char*fmt, ...))
+{
+ TlsConnection *c;
+ Msg m;
+ Bytes *csid;
+ uchar sid[SidSize], kd[MaxKeyData];
+ char *secrets;
+ int cipher, compressor, nsid, rv;
+
+ if(trace)
+ trace("tlsServer2\n");
+ if(!initCiphers())
+ return nil;
+ c = emalloc(sizeof(TlsConnection));
+ c->ctl = ctl;
+ c->hand = hand;
+ c->trace = trace;
+ c->version = ProtocolVersion;
+
+ memset(&m, 0, sizeof(m));
+ if(!msgRecv(c, &m)){
+ if(trace)
+ trace("initial msgRecv failed\n");
+ goto Err;
+ }
+ if(m.tag != HClientHello) {
+ tlsError(c, EUnexpectedMessage, "expected a client hello");
+ goto Err;
+ }
+ c->clientVersion = m.u.clientHello.version;
+ if(trace)
+ trace("ClientHello version %x\n", c->clientVersion);
+ if(setVersion(c, m.u.clientHello.version) < 0) {
+ tlsError(c, EIllegalParameter, "incompatible version");
+ goto Err;
+ }
+
+ memmove(c->crandom, m.u.clientHello.random, RandomSize);
+ cipher = okCipher(m.u.clientHello.ciphers);
+ if(cipher < 0) {
+ // reply with EInsufficientSecurity if we know that's the case
+ if(cipher == -2)
+ tlsError(c, EInsufficientSecurity, "cipher suites too weak");
+ else
+ tlsError(c, EHandshakeFailure, "no matching cipher suite");
+ goto Err;
+ }
+ if(!setAlgs(c, cipher)){
+ tlsError(c, EHandshakeFailure, "no matching cipher suite");
+ goto Err;
+ }
+ compressor = okCompression(m.u.clientHello.compressors);
+ if(compressor < 0) {
+ tlsError(c, EHandshakeFailure, "no matching compressor");
+ goto Err;
+ }
+
+ csid = m.u.clientHello.sid;
+ if(trace)
+ trace(" cipher %d, compressor %d, csidlen %d\n", cipher, compressor, csid->len);
+ c->sec = tlsSecInits(c->clientVersion, csid->data, csid->len, c->crandom, sid, &nsid, c->srandom);
+ if(c->sec == nil){
+ tlsError(c, EHandshakeFailure, "can't initialize security: %r");
+ goto Err;
+ }
+ c->sec->rpc = factotum_rsa_open(cert, ncert);
+ if(c->sec->rpc == nil){
+ tlsError(c, EHandshakeFailure, "factotum_rsa_open: %r");
+ goto Err;
+ }
+ c->sec->rsapub = X509toRSApub(cert, ncert, nil, 0);
+ msgClear(&m);
+
+ m.tag = HServerHello;
+ m.u.serverHello.version = c->version;
+ memmove(m.u.serverHello.random, c->srandom, RandomSize);
+ m.u.serverHello.cipher = cipher;
+ m.u.serverHello.compressor = compressor;
+ c->sid = makebytes(sid, nsid);
+ m.u.serverHello.sid = makebytes(c->sid->data, c->sid->len);
+ if(!msgSend(c, &m, AQueue))
+ goto Err;
+ msgClear(&m);
+
+ m.tag = HCertificate;
+ m.u.certificate.ncert = 1;
+ m.u.certificate.certs = emalloc(m.u.certificate.ncert * sizeof(Bytes));
+ m.u.certificate.certs[0] = makebytes(cert, ncert);
+ if(!msgSend(c, &m, AQueue))
+ goto Err;
+ msgClear(&m);
+
+ m.tag = HServerHelloDone;
+ if(!msgSend(c, &m, AFlush))
+ goto Err;
+ msgClear(&m);
+
+ if(!msgRecv(c, &m))
+ goto Err;
+ if(m.tag != HClientKeyExchange) {
+ tlsError(c, EUnexpectedMessage, "expected a client key exchange");
+ goto Err;
+ }
+ if(tlsSecSecrets(c->sec, c->version, m.u.clientKeyExchange.key->data, m.u.clientKeyExchange.key->len, kd, c->nsecret) < 0){
+ tlsError(c, EHandshakeFailure, "couldn't set secrets: %r");
+ goto Err;
+ }
+ if(trace)
+ trace("tls secrets\n");
+ secrets = (char*)emalloc(2*c->nsecret);
+ enc64(secrets, 2*c->nsecret, kd, c->nsecret);
+ rv = fprint(c->ctl, "secret %s %s 0 %s", c->digest, c->enc, secrets);
+ memset(secrets, 0, 2*c->nsecret);
+ free(secrets);
+ memset(kd, 0, c->nsecret);
+ if(rv < 0){
+ tlsError(c, EHandshakeFailure, "can't set keys: %r");
+ goto Err;
+ }
+ msgClear(&m);
+
+ /* no CertificateVerify; skip to Finished */
+ if(tlsSecFinished(c->sec, c->hsmd5, c->hssha1, c->finished.verify, c->finished.n, 1) < 0){
+ tlsError(c, EInternalError, "can't set finished: %r");
+ goto Err;
+ }
+ if(!msgRecv(c, &m))
+ goto Err;
+ if(m.tag != HFinished) {
+ tlsError(c, EUnexpectedMessage, "expected a finished");
+ goto Err;
+ }
+ if(!finishedMatch(c, &m.u.finished)) {
+ tlsError(c, EHandshakeFailure, "finished verification failed");
+ goto Err;
+ }
+ msgClear(&m);
+
+ /* change cipher spec */
+ if(fprint(c->ctl, "changecipher") < 0){
+ tlsError(c, EInternalError, "can't enable cipher: %r");
+ goto Err;
+ }
+
+ if(tlsSecFinished(c->sec, c->hsmd5, c->hssha1, c->finished.verify, c->finished.n, 0) < 0){
+ tlsError(c, EInternalError, "can't set finished: %r");
+ goto Err;
+ }
+ m.tag = HFinished;
+ m.u.finished = c->finished;
+ if(!msgSend(c, &m, AFlush))
+ goto Err;
+ msgClear(&m);
+ if(trace)
+ trace("tls finished\n");
+
+ if(fprint(c->ctl, "opened") < 0)
+ goto Err;
+ tlsSecOk(c->sec);
+ return c;
+
+Err:
+ msgClear(&m);
+ tlsConnectionFree(c);
+ return 0;
+}
+
+static TlsConnection *
+tlsClient2(int ctl, int hand, uchar *csid, int ncsid, int (*trace)(char*fmt, ...))
+{
+ TlsConnection *c;
+ Msg m;
+ uchar kd[MaxKeyData], *epm;
+ char *secrets;
+ int creq, nepm, rv;
+
+ if(!initCiphers())
+ return nil;
+ epm = nil;
+ c = emalloc(sizeof(TlsConnection));
+ c->version = ProtocolVersion;
+ c->ctl = ctl;
+ c->hand = hand;
+ c->trace = trace;
+ c->isClient = 1;
+ c->clientVersion = c->version;
+
+ c->sec = tlsSecInitc(c->clientVersion, c->crandom);
+ if(c->sec == nil)
+ goto Err;
+
+ /* client hello */
+ memset(&m, 0, sizeof(m));
+ m.tag = HClientHello;
+ m.u.clientHello.version = c->clientVersion;
+ memmove(m.u.clientHello.random, c->crandom, RandomSize);
+ m.u.clientHello.sid = makebytes(csid, ncsid);
+ m.u.clientHello.ciphers = makeciphers();
+ m.u.clientHello.compressors = makebytes(compressors,sizeof(compressors));
+ if(!msgSend(c, &m, AFlush))
+ goto Err;
+ msgClear(&m);
+
+ /* server hello */
+ if(!msgRecv(c, &m))
+ goto Err;
+ if(m.tag != HServerHello) {
+ tlsError(c, EUnexpectedMessage, "expected a server hello");
+ goto Err;
+ }
+ if(setVersion(c, m.u.serverHello.version) < 0) {
+ tlsError(c, EIllegalParameter, "incompatible version %r");
+ goto Err;
+ }
+ memmove(c->srandom, m.u.serverHello.random, RandomSize);
+ c->sid = makebytes(m.u.serverHello.sid->data, m.u.serverHello.sid->len);
+ if(c->sid->len != 0 && c->sid->len != SidSize) {
+ tlsError(c, EIllegalParameter, "invalid server session identifier");
+ goto Err;
+ }
+ if(!setAlgs(c, m.u.serverHello.cipher)) {
+ tlsError(c, EIllegalParameter, "invalid cipher suite");
+ goto Err;
+ }
+ if(m.u.serverHello.compressor != CompressionNull) {
+ tlsError(c, EIllegalParameter, "invalid compression");
+ goto Err;
+ }
+ msgClear(&m);
+
+ /* certificate */
+ if(!msgRecv(c, &m) || m.tag != HCertificate) {
+ tlsError(c, EUnexpectedMessage, "expected a certificate");
+ goto Err;
+ }
+ if(m.u.certificate.ncert < 1) {
+ tlsError(c, EIllegalParameter, "runt certificate");
+ goto Err;
+ }
+ c->cert = makebytes(m.u.certificate.certs[0]->data, m.u.certificate.certs[0]->len);
+ msgClear(&m);
+
+ /* server key exchange (optional) */
+ if(!msgRecv(c, &m))
+ goto Err;
+ if(m.tag == HServerKeyExchange) {
+ tlsError(c, EUnexpectedMessage, "got an server key exchange");
+ goto Err;
+ // If implementing this later, watch out for rollback attack
+ // described in Wagner Schneier 1996, section 4.4.
+ }
+
+ /* certificate request (optional) */
+ creq = 0;
+ if(m.tag == HCertificateRequest) {
+ creq = 1;
+ msgClear(&m);
+ if(!msgRecv(c, &m))
+ goto Err;
+ }
+
+ if(m.tag != HServerHelloDone) {
+ tlsError(c, EUnexpectedMessage, "expected a server hello done");
+ goto Err;
+ }
+ msgClear(&m);
+
+ if(tlsSecSecretc(c->sec, c->sid->data, c->sid->len, c->srandom,
+ c->cert->data, c->cert->len, c->version, &epm, &nepm,
+ kd, c->nsecret) < 0){
+ tlsError(c, EBadCertificate, "invalid x509/rsa certificate");
+ goto Err;
+ }
+ secrets = (char*)emalloc(2*c->nsecret);
+ enc64(secrets, 2*c->nsecret, kd, c->nsecret);
+ rv = fprint(c->ctl, "secret %s %s 1 %s", c->digest, c->enc, secrets);
+ memset(secrets, 0, 2*c->nsecret);
+ free(secrets);
+ memset(kd, 0, c->nsecret);
+ if(rv < 0){
+ tlsError(c, EHandshakeFailure, "can't set keys: %r");
+ goto Err;
+ }
+
+ if(creq) {
+ /* send a zero length certificate */
+ m.tag = HCertificate;
+ if(!msgSend(c, &m, AFlush))
+ goto Err;
+ msgClear(&m);
+ }
+
+ /* client key exchange */
+ m.tag = HClientKeyExchange;
+ m.u.clientKeyExchange.key = makebytes(epm, nepm);
+ free(epm);
+ epm = nil;
+ if(m.u.clientKeyExchange.key == nil) {
+ tlsError(c, EHandshakeFailure, "can't set secret: %r");
+ goto Err;
+ }
+ if(!msgSend(c, &m, AFlush))
+ goto Err;
+ msgClear(&m);
+
+ /* change cipher spec */
+ if(fprint(c->ctl, "changecipher") < 0){
+ tlsError(c, EInternalError, "can't enable cipher: %r");
+ goto Err;
+ }
+
+ // Cipherchange must occur immediately before Finished to avoid
+ // potential hole; see section 4.3 of Wagner Schneier 1996.
+ if(tlsSecFinished(c->sec, c->hsmd5, c->hssha1, c->finished.verify, c->finished.n, 1) < 0){
+ tlsError(c, EInternalError, "can't set finished 1: %r");
+ goto Err;
+ }
+ m.tag = HFinished;
+ m.u.finished = c->finished;
+
+ if(!msgSend(c, &m, AFlush)) {
+ fprint(2, "tlsClient nepm=%d\n", nepm);
+ tlsError(c, EInternalError, "can't flush after client Finished: %r");
+ goto Err;
+ }
+ msgClear(&m);
+
+ if(tlsSecFinished(c->sec, c->hsmd5, c->hssha1, c->finished.verify, c->finished.n, 0) < 0){
+ fprint(2, "tlsClient nepm=%d\n", nepm);
+ tlsError(c, EInternalError, "can't set finished 0: %r");
+ goto Err;
+ }
+ if(!msgRecv(c, &m)) {
+ fprint(2, "tlsClient nepm=%d\n", nepm);
+ tlsError(c, EInternalError, "can't read server Finished: %r");
+ goto Err;
+ }
+ if(m.tag != HFinished) {
+ fprint(2, "tlsClient nepm=%d\n", nepm);
+ tlsError(c, EUnexpectedMessage, "expected a Finished msg from server");
+ goto Err;
+ }
+
+ if(!finishedMatch(c, &m.u.finished)) {
+ tlsError(c, EHandshakeFailure, "finished verification failed");
+ goto Err;
+ }
+ msgClear(&m);
+
+ if(fprint(c->ctl, "opened") < 0){
+ if(trace)
+ trace("unable to do final open: %r\n");
+ goto Err;
+ }
+ tlsSecOk(c->sec);
+ return c;
+
+Err:
+ free(epm);
+ msgClear(&m);
+ tlsConnectionFree(c);
+ return 0;
+}
+
+
+//================= message functions ========================
+
+static uchar sendbuf[9000], *sendp;
+
+static int
+msgSend(TlsConnection *c, Msg *m, int act)
+{
+ uchar *p; // sendp = start of new message; p = write pointer
+ int nn, n, i;
+
+ if(sendp == nil)
+ sendp = sendbuf;
+ p = sendp;
+ if(c->trace)
+ c->trace("send %s", msgPrint((char*)p, (sizeof sendbuf) - (p-sendbuf), m));
+
+ p[0] = m->tag; // header - fill in size later
+ p += 4;
+
+ switch(m->tag) {
+ default:
+ tlsError(c, EInternalError, "can't encode a %d", m->tag);
+ goto Err;
+ case HClientHello:
+ // version
+ put16(p, m->u.clientHello.version);
+ p += 2;
+
+ // random
+ memmove(p, m->u.clientHello.random, RandomSize);
+ p += RandomSize;
+
+ // sid
+ n = m->u.clientHello.sid->len;
+ assert(n < 256);
+ p[0] = n;
+ memmove(p+1, m->u.clientHello.sid->data, n);
+ p += n+1;
+
+ n = m->u.clientHello.ciphers->len;
+ assert(n > 0 && n < 200);
+ put16(p, n*2);
+ p += 2;
+ for(i=0; i<n; i++) {
+ put16(p, m->u.clientHello.ciphers->data[i]);
+ p += 2;
+ }
+
+ n = m->u.clientHello.compressors->len;
+ assert(n > 0);
+ p[0] = n;
+ memmove(p+1, m->u.clientHello.compressors->data, n);
+ p += n+1;
+ break;
+ case HServerHello:
+ put16(p, m->u.serverHello.version);
+ p += 2;
+
+ // random
+ memmove(p, m->u.serverHello.random, RandomSize);
+ p += RandomSize;
+
+ // sid
+ n = m->u.serverHello.sid->len;
+ assert(n < 256);
+ p[0] = n;
+ memmove(p+1, m->u.serverHello.sid->data, n);
+ p += n+1;
+
+ put16(p, m->u.serverHello.cipher);
+ p += 2;
+ p[0] = m->u.serverHello.compressor;
+ p += 1;
+ break;
+ case HServerHelloDone:
+ break;
+ case HCertificate:
+ nn = 0;
+ for(i = 0; i < m->u.certificate.ncert; i++)
+ nn += 3 + m->u.certificate.certs[i]->len;
+ if(p + 3 + nn - sendbuf > sizeof(sendbuf)) {
+ tlsError(c, EInternalError, "output buffer too small for certificate");
+ goto Err;
+ }
+ put24(p, nn);
+ p += 3;
+ for(i = 0; i < m->u.certificate.ncert; i++){
+ put24(p, m->u.certificate.certs[i]->len);
+ p += 3;
+ memmove(p, m->u.certificate.certs[i]->data, m->u.certificate.certs[i]->len);
+ p += m->u.certificate.certs[i]->len;
+ }
+ break;
+ case HClientKeyExchange:
+ n = m->u.clientKeyExchange.key->len;
+ if(c->version != SSL3Version){
+ put16(p, n);
+ p += 2;
+ }
+ memmove(p, m->u.clientKeyExchange.key->data, n);
+ p += n;
+ break;
+ case HFinished:
+ memmove(p, m->u.finished.verify, m->u.finished.n);
+ p += m->u.finished.n;
+ break;
+ }
+
+ // go back and fill in size
+ n = p-sendp;
+ assert(p <= sendbuf+sizeof(sendbuf));
+ put24(sendp+1, n-4);
+
+ // remember hash of Handshake messages
+ if(m->tag != HHelloRequest) {
+ md5(sendp, n, 0, &c->hsmd5);
+ sha1(sendp, n, 0, &c->hssha1);
+ }
+
+ sendp = p;
+ if(act == AFlush){
+ sendp = sendbuf;
+ if(write(c->hand, sendbuf, p-sendbuf) < 0){
+ fprint(2, "write error: %r\n");
+ goto Err;
+ }
+ }
+ msgClear(m);
+ return 1;
+Err:
+ msgClear(m);
+ return 0;
+}
+
+static uchar*
+tlsReadN(TlsConnection *c, int n)
+{
+ uchar *p;
+ int nn, nr;
+
+ nn = c->ep - c->rp;
+ if(nn < n){
+ if(c->rp != c->buf){
+ memmove(c->buf, c->rp, nn);
+ c->rp = c->buf;
+ c->ep = &c->buf[nn];
+ }
+ for(; nn < n; nn += nr) {
+ nr = read(c->hand, &c->rp[nn], n - nn);
+ if(nr <= 0)
+ return nil;
+ c->ep += nr;
+ }
+ }
+ p = c->rp;
+ c->rp += n;
+ return p;
+}
+
+static int
+msgRecv(TlsConnection *c, Msg *m)
+{
+ uchar *p;
+ int type, n, nn, i, nsid, nrandom, nciph;
+
+ for(;;) {
+ p = tlsReadN(c, 4);
+ if(p == nil)
+ return 0;
+ type = p[0];
+ n = get24(p+1);
+
+ if(type != HHelloRequest)
+ break;
+ if(n != 0) {
+ tlsError(c, EDecodeError, "invalid hello request during handshake");
+ return 0;
+ }
+ }
+
+ if(n > sizeof(c->buf)) {
+ tlsError(c, EDecodeError, "handshake message too long %d %d", n, sizeof(c->buf));
+ return 0;
+ }
+
+ if(type == HSSL2ClientHello){
+ /* Cope with an SSL3 ClientHello expressed in SSL2 record format.
+ This is sent by some clients that we must interoperate
+ with, such as Java's JSSE and Microsoft's Internet Explorer. */
+ p = tlsReadN(c, n);
+ if(p == nil)
+ return 0;
+ md5(p, n, 0, &c->hsmd5);
+ sha1(p, n, 0, &c->hssha1);
+ m->tag = HClientHello;
+ if(n < 22)
+ goto Short;
+ m->u.clientHello.version = get16(p+1);
+ p += 3;
+ n -= 3;
+ nn = get16(p); /* cipher_spec_len */
+ nsid = get16(p + 2);
+ nrandom = get16(p + 4);
+ p += 6;
+ n -= 6;
+ if(nsid != 0 /* no sid's, since shouldn't restart using ssl2 header */
+ || nrandom < 16 || nn % 3)
+ goto Err;
+ if(c->trace && (n - nrandom != nn))
+ c->trace("n-nrandom!=nn: n=%d nrandom=%d nn=%d\n", n, nrandom, nn);
+ /* ignore ssl2 ciphers and look for {0x00, ssl3 cipher} */
+ nciph = 0;
+ for(i = 0; i < nn; i += 3)
+ if(p[i] == 0)
+ nciph++;
+ m->u.clientHello.ciphers = newints(nciph);
+ nciph = 0;
+ for(i = 0; i < nn; i += 3)
+ if(p[i] == 0)
+ m->u.clientHello.ciphers->data[nciph++] = get16(&p[i + 1]);
+ p += nn;
+ m->u.clientHello.sid = makebytes(nil, 0);
+ if(nrandom > RandomSize)
+ nrandom = RandomSize;
+ memset(m->u.clientHello.random, 0, RandomSize - nrandom);
+ memmove(&m->u.clientHello.random[RandomSize - nrandom], p, nrandom);
+ m->u.clientHello.compressors = newbytes(1);
+ m->u.clientHello.compressors->data[0] = CompressionNull;
+ goto Ok;
+ }
+
+ md5(p, 4, 0, &c->hsmd5);
+ sha1(p, 4, 0, &c->hssha1);
+
+ p = tlsReadN(c, n);
+ if(p == nil)
+ return 0;
+
+ md5(p, n, 0, &c->hsmd5);
+ sha1(p, n, 0, &c->hssha1);
+
+ m->tag = type;
+
+ switch(type) {
+ default:
+ tlsError(c, EUnexpectedMessage, "can't decode a %d", type);
+ goto Err;
+ case HClientHello:
+ if(n < 2)
+ goto Short;
+ m->u.clientHello.version = get16(p);
+ p += 2;
+ n -= 2;
+
+ if(n < RandomSize)
+ goto Short;
+ memmove(m->u.clientHello.random, p, RandomSize);
+ p += RandomSize;
+ n -= RandomSize;
+ if(n < 1 || n < p[0]+1)
+ goto Short;
+ m->u.clientHello.sid = makebytes(p+1, p[0]);
+ p += m->u.clientHello.sid->len+1;
+ n -= m->u.clientHello.sid->len+1;
+
+ if(n < 2)
+ goto Short;
+ nn = get16(p);
+ p += 2;
+ n -= 2;
+
+ if((nn & 1) || n < nn || nn < 2)
+ goto Short;
+ m->u.clientHello.ciphers = newints(nn >> 1);
+ for(i = 0; i < nn; i += 2)
+ m->u.clientHello.ciphers->data[i >> 1] = get16(&p[i]);
+ p += nn;
+ n -= nn;
+
+ if(n < 1 || n < p[0]+1 || p[0] == 0)
+ goto Short;
+ nn = p[0];
+ m->u.clientHello.compressors = newbytes(nn);
+ memmove(m->u.clientHello.compressors->data, p+1, nn);
+ n -= nn + 1;
+ break;
+ case HServerHello:
+ if(n < 2)
+ goto Short;
+ m->u.serverHello.version = get16(p);
+ p += 2;
+ n -= 2;
+
+ if(n < RandomSize)
+ goto Short;
+ memmove(m->u.serverHello.random, p, RandomSize);
+ p += RandomSize;
+ n -= RandomSize;
+
+ if(n < 1 || n < p[0]+1)
+ goto Short;
+ m->u.serverHello.sid = makebytes(p+1, p[0]);
+ p += m->u.serverHello.sid->len+1;
+ n -= m->u.serverHello.sid->len+1;
+
+ if(n < 3)
+ goto Short;
+ m->u.serverHello.cipher = get16(p);
+ m->u.serverHello.compressor = p[2];
+ n -= 3;
+ break;
+ case HCertificate:
+ if(n < 3)
+ goto Short;
+ nn = get24(p);
+ p += 3;
+ n -= 3;
+ if(n != nn)
+ goto Short;
+ /* certs */
+ i = 0;
+ while(n > 0) {
+ if(n < 3)
+ goto Short;
+ nn = get24(p);
+ p += 3;
+ n -= 3;
+ if(nn > n)
+ goto Short;
+ m->u.certificate.ncert = i+1;
+ m->u.certificate.certs = erealloc(m->u.certificate.certs, (i+1)*sizeof(Bytes));
+ m->u.certificate.certs[i] = makebytes(p, nn);
+ p += nn;
+ n -= nn;
+ i++;
+ }
+ break;
+ case HCertificateRequest:
+ if(n < 2)
+ goto Short;
+ nn = get16(p);
+ p += 2;
+ n -= 2;
+ if(nn < 1 || nn > n)
+ goto Short;
+ m->u.certificateRequest.types = makebytes(p, nn);
+ nn = get24(p);
+ p += 3;
+ n -= 3;
+ if(nn == 0 || n != nn)
+ goto Short;
+ /* cas */
+ i = 0;
+ while(n > 0) {
+ if(n < 2)
+ goto Short;
+ nn = get16(p);
+ p += 2;
+ n -= 2;
+ if(nn < 1 || nn > n)
+ goto Short;
+ m->u.certificateRequest.nca = i+1;
+ m->u.certificateRequest.cas = erealloc(m->u.certificateRequest.cas, (i+1)*sizeof(Bytes));
+ m->u.certificateRequest.cas[i] = makebytes(p, nn);
+ p += nn;
+ n -= nn;
+ i++;
+ }
+ break;
+ case HServerHelloDone:
+ break;
+ case HClientKeyExchange:
+ /*
+ * this message depends upon the encryption selected
+ * assume rsa.
+ */
+ if(c->version == SSL3Version)
+ nn = n;
+ else{
+ if(n < 2)
+ goto Short;
+ nn = get16(p);
+ p += 2;
+ n -= 2;
+ }
+ if(n < nn)
+ goto Short;
+ m->u.clientKeyExchange.key = makebytes(p, nn);
+ n -= nn;
+ break;
+ case HFinished:
+ m->u.finished.n = c->finished.n;
+ if(n < m->u.finished.n)
+ goto Short;
+ memmove(m->u.finished.verify, p, m->u.finished.n);
+ n -= m->u.finished.n;
+ break;
+ }
+
+ if(type != HClientHello && n != 0)
+ goto Short;
+Ok:
+ if(c->trace){
+ char buf[8000];
+ c->trace("recv %s", msgPrint(buf, sizeof buf, m));
+ }
+ return 1;
+Short:
+ tlsError(c, EDecodeError, "handshake message has invalid length");
+Err:
+ msgClear(m);
+ return 0;
+}
+
+static void
+msgClear(Msg *m)
+{
+ int i;
+
+ switch(m->tag) {
+ default:
+ sysfatal("msgClear: unknown message type: %d\n", m->tag);
+ case HHelloRequest:
+ break;
+ case HClientHello:
+ freebytes(m->u.clientHello.sid);
+ freeints(m->u.clientHello.ciphers);
+ freebytes(m->u.clientHello.compressors);
+ break;
+ case HServerHello:
+ freebytes(m->u.clientHello.sid);
+ break;
+ case HCertificate:
+ for(i=0; i<m->u.certificate.ncert; i++)
+ freebytes(m->u.certificate.certs[i]);
+ free(m->u.certificate.certs);
+ break;
+ case HCertificateRequest:
+ freebytes(m->u.certificateRequest.types);
+ for(i=0; i<m->u.certificateRequest.nca; i++)
+ freebytes(m->u.certificateRequest.cas[i]);
+ free(m->u.certificateRequest.cas);
+ break;
+ case HServerHelloDone:
+ break;
+ case HClientKeyExchange:
+ freebytes(m->u.clientKeyExchange.key);
+ break;
+ case HFinished:
+ break;
+ }
+ memset(m, 0, sizeof(Msg));
+}
+
+static char *
+bytesPrint(char *bs, char *be, char *s0, Bytes *b, char *s1)
+{
+ int i;
+
+ if(s0)
+ bs = seprint(bs, be, "%s", s0);
+ bs = seprint(bs, be, "[");
+ if(b == nil)
+ bs = seprint(bs, be, "nil");
+ else
+ for(i=0; i<b->len; i++)
+ bs = seprint(bs, be, "%.2x ", b->data[i]);
+ bs = seprint(bs, be, "]");
+ if(s1)
+ bs = seprint(bs, be, "%s", s1);
+ return bs;
+}
+
+static char *
+intsPrint(char *bs, char *be, char *s0, Ints *b, char *s1)
+{
+ int i;
+
+ if(s0)
+ bs = seprint(bs, be, "%s", s0);
+ bs = seprint(bs, be, "[");
+ if(b == nil)
+ bs = seprint(bs, be, "nil");
+ else
+ for(i=0; i<b->len; i++)
+ bs = seprint(bs, be, "%x ", b->data[i]);
+ bs = seprint(bs, be, "]");
+ if(s1)
+ bs = seprint(bs, be, "%s", s1);
+ return bs;
+}
+
+static char*
+msgPrint(char *buf, int n, Msg *m)
+{
+ int i;
+ char *bs = buf, *be = buf+n;
+
+ switch(m->tag) {
+ default:
+ bs = seprint(bs, be, "unknown %d\n", m->tag);
+ break;
+ case HClientHello:
+ bs = seprint(bs, be, "ClientHello\n");
+ bs = seprint(bs, be, "\tversion: %.4x\n", m->u.clientHello.version);
+ bs = seprint(bs, be, "\trandom: ");
+ for(i=0; i<RandomSize; i++)
+ bs = seprint(bs, be, "%.2x", m->u.clientHello.random[i]);
+ bs = seprint(bs, be, "\n");
+ bs = bytesPrint(bs, be, "\tsid: ", m->u.clientHello.sid, "\n");
+ bs = intsPrint(bs, be, "\tciphers: ", m->u.clientHello.ciphers, "\n");
+ bs = bytesPrint(bs, be, "\tcompressors: ", m->u.clientHello.compressors, "\n");
+ break;
+ case HServerHello:
+ bs = seprint(bs, be, "ServerHello\n");
+ bs = seprint(bs, be, "\tversion: %.4x\n", m->u.serverHello.version);
+ bs = seprint(bs, be, "\trandom: ");
+ for(i=0; i<RandomSize; i++)
+ bs = seprint(bs, be, "%.2x", m->u.serverHello.random[i]);
+ bs = seprint(bs, be, "\n");
+ bs = bytesPrint(bs, be, "\tsid: ", m->u.serverHello.sid, "\n");
+ bs = seprint(bs, be, "\tcipher: %.4x\n", m->u.serverHello.cipher);
+ bs = seprint(bs, be, "\tcompressor: %.2x\n", m->u.serverHello.compressor);
+ break;
+ case HCertificate:
+ bs = seprint(bs, be, "Certificate\n");
+ for(i=0; i<m->u.certificate.ncert; i++)
+ bs = bytesPrint(bs, be, "\t", m->u.certificate.certs[i], "\n");
+ break;
+ case HCertificateRequest:
+ bs = seprint(bs, be, "CertificateRequest\n");
+ bs = bytesPrint(bs, be, "\ttypes: ", m->u.certificateRequest.types, "\n");
+ bs = seprint(bs, be, "\tcertificateauthorities\n");
+ for(i=0; i<m->u.certificateRequest.nca; i++)
+ bs = bytesPrint(bs, be, "\t\t", m->u.certificateRequest.cas[i], "\n");
+ break;
+ case HServerHelloDone:
+ bs = seprint(bs, be, "ServerHelloDone\n");
+ break;
+ case HClientKeyExchange:
+ bs = seprint(bs, be, "HClientKeyExchange\n");
+ bs = bytesPrint(bs, be, "\tkey: ", m->u.clientKeyExchange.key, "\n");
+ break;
+ case HFinished:
+ bs = seprint(bs, be, "HFinished\n");
+ for(i=0; i<m->u.finished.n; i++)
+ bs = seprint(bs, be, "%.2x", m->u.finished.verify[i]);
+ bs = seprint(bs, be, "\n");
+ break;
+ }
+ USED(bs);
+ return buf;
+}
+
+static void
+tlsError(TlsConnection *c, int err, char *fmt, ...)
+{
+ char msg[512];
+ va_list arg;
+
+ va_start(arg, fmt);
+ vseprint(msg, msg+sizeof(msg), fmt, arg);
+ va_end(arg);
+ if(c->trace)
+ c->trace("tlsError: %s\n", msg);
+ else if(c->erred)
+ fprint(2, "double error: %r, %s", msg);
+ else
+ werrstr("tls: local %s", msg);
+ c->erred = 1;
+ fprint(c->ctl, "alert %d", err);
+}
+
+// commit to specific version number
+static int
+setVersion(TlsConnection *c, int version)
+{
+ if(c->verset || version > MaxProtoVersion || version < MinProtoVersion)
+ return -1;
+ if(version > c->version)
+ version = c->version;
+ if(version == SSL3Version) {
+ c->version = version;
+ c->finished.n = SSL3FinishedLen;
+ }else if(version == TLSVersion){
+ c->version = version;
+ c->finished.n = TLSFinishedLen;
+ }else
+ return -1;
+ c->verset = 1;
+ return fprint(c->ctl, "version 0x%x", version);
+}
+
+// confirm that received Finished message matches the expected value
+static int
+finishedMatch(TlsConnection *c, Finished *f)
+{
+ return memcmp(f->verify, c->finished.verify, f->n) == 0;
+}
+
+// free memory associated with TlsConnection struct
+// (but don't close the TLS channel itself)
+static void
+tlsConnectionFree(TlsConnection *c)
+{
+ tlsSecClose(c->sec);
+ freebytes(c->sid);
+ freebytes(c->cert);
+ memset(c, 0, sizeof(c));
+ free(c);
+}
+
+
+//================= cipher choices ========================
+
+static int weakCipher[CipherMax] =
+{
+ 1, /* TLS_NULL_WITH_NULL_NULL */
+ 1, /* TLS_RSA_WITH_NULL_MD5 */
+ 1, /* TLS_RSA_WITH_NULL_SHA */
+ 1, /* TLS_RSA_EXPORT_WITH_RC4_40_MD5 */
+ 0, /* TLS_RSA_WITH_RC4_128_MD5 */
+ 0, /* TLS_RSA_WITH_RC4_128_SHA */
+ 1, /* TLS_RSA_EXPORT_WITH_RC2_CBC_40_MD5 */
+ 0, /* TLS_RSA_WITH_IDEA_CBC_SHA */
+ 1, /* TLS_RSA_EXPORT_WITH_DES40_CBC_SHA */
+ 0, /* TLS_RSA_WITH_DES_CBC_SHA */
+ 0, /* TLS_RSA_WITH_3DES_EDE_CBC_SHA */
+ 1, /* TLS_DH_DSS_EXPORT_WITH_DES40_CBC_SHA */
+ 0, /* TLS_DH_DSS_WITH_DES_CBC_SHA */
+ 0, /* TLS_DH_DSS_WITH_3DES_EDE_CBC_SHA */
+ 1, /* TLS_DH_RSA_EXPORT_WITH_DES40_CBC_SHA */
+ 0, /* TLS_DH_RSA_WITH_DES_CBC_SHA */
+ 0, /* TLS_DH_RSA_WITH_3DES_EDE_CBC_SHA */
+ 1, /* TLS_DHE_DSS_EXPORT_WITH_DES40_CBC_SHA */
+ 0, /* TLS_DHE_DSS_WITH_DES_CBC_SHA */
+ 0, /* TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA */
+ 1, /* TLS_DHE_RSA_EXPORT_WITH_DES40_CBC_SHA */
+ 0, /* TLS_DHE_RSA_WITH_DES_CBC_SHA */
+ 0, /* TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA */
+ 1, /* TLS_DH_anon_EXPORT_WITH_RC4_40_MD5 */
+ 1, /* TLS_DH_anon_WITH_RC4_128_MD5 */
+ 1, /* TLS_DH_anon_EXPORT_WITH_DES40_CBC_SHA */
+ 1, /* TLS_DH_anon_WITH_DES_CBC_SHA */
+ 1, /* TLS_DH_anon_WITH_3DES_EDE_CBC_SHA */
+};
+
+static int
+setAlgs(TlsConnection *c, int a)
+{
+ int i;
+
+ for(i = 0; i < nelem(cipherAlgs); i++){
+ if(cipherAlgs[i].tlsid == a){
+ c->enc = cipherAlgs[i].enc;
+ c->digest = cipherAlgs[i].digest;
+ c->nsecret = cipherAlgs[i].nsecret;
+ if(c->nsecret > MaxKeyData)
+ return 0;
+ return 1;
+ }
+ }
+ return 0;
+}
+
+static int
+okCipher(Ints *cv)
+{
+ int weak, i, j, c;
+
+ weak = 1;
+ for(i = 0; i < cv->len; i++) {
+ c = cv->data[i];
+ if(c >= CipherMax)
+ weak = 0;
+ else
+ weak &= weakCipher[c];
+ for(j = 0; j < nelem(cipherAlgs); j++)
+ if(cipherAlgs[j].ok && cipherAlgs[j].tlsid == c)
+ return c;
+ }
+ if(weak)
+ return -2;
+ return -1;
+}
+
+static int
+okCompression(Bytes *cv)
+{
+ int i, j, c;
+
+ for(i = 0; i < cv->len; i++) {
+ c = cv->data[i];
+ for(j = 0; j < nelem(compressors); j++) {
+ if(compressors[j] == c)
+ return c;
+ }
+ }
+ return -1;
+}
+
+static Lock ciphLock;
+static int nciphers;
+
+static int
+initCiphers(void)
+{
+ enum {MaxAlgF = 1024, MaxAlgs = 10};
+ char s[MaxAlgF], *flds[MaxAlgs];
+ int i, j, n, ok;
+
+ lock(&ciphLock);
+ if(nciphers){
+ unlock(&ciphLock);
+ return nciphers;
+ }
+ j = open("#a/tls/encalgs", OREAD);
+ if(j < 0){
+ werrstr("can't open #a/tls/encalgs: %r");
+ return 0;
+ }
+ n = read(j, s, MaxAlgF-1);
+ close(j);
+ if(n <= 0){
+ werrstr("nothing in #a/tls/encalgs: %r");
+ return 0;
+ }
+ s[n] = 0;
+ n = getfields(s, flds, MaxAlgs, 1, " \t\r\n");
+ for(i = 0; i < nelem(cipherAlgs); i++){
+ ok = 0;
+ for(j = 0; j < n; j++){
+ if(strcmp(cipherAlgs[i].enc, flds[j]) == 0){
+ ok = 1;
+ break;
+ }
+ }
+ cipherAlgs[i].ok = ok;
+ }
+
+ j = open("#a/tls/hashalgs", OREAD);
+ if(j < 0){
+ werrstr("can't open #a/tls/hashalgs: %r");
+ return 0;
+ }
+ n = read(j, s, MaxAlgF-1);
+ close(j);
+ if(n <= 0){
+ werrstr("nothing in #a/tls/hashalgs: %r");
+ return 0;
+ }
+ s[n] = 0;
+ n = getfields(s, flds, MaxAlgs, 1, " \t\r\n");
+ for(i = 0; i < nelem(cipherAlgs); i++){
+ ok = 0;
+ for(j = 0; j < n; j++){
+ if(strcmp(cipherAlgs[i].digest, flds[j]) == 0){
+ ok = 1;
+ break;
+ }
+ }
+ cipherAlgs[i].ok &= ok;
+ if(cipherAlgs[i].ok)
+ nciphers++;
+ }
+ unlock(&ciphLock);
+ return nciphers;
+}
+
+static Ints*
+makeciphers(void)
+{
+ Ints *is;
+ int i, j;
+
+ is = newints(nciphers);
+ j = 0;
+ for(i = 0; i < nelem(cipherAlgs); i++){
+ if(cipherAlgs[i].ok)
+ is->data[j++] = cipherAlgs[i].tlsid;
+ }
+ return is;
+}
+
+
+
+//================= security functions ========================
+
+// given X.509 certificate, set up connection to factotum
+// for using corresponding private key
+static AuthRpc*
+factotum_rsa_open(uchar *cert, int certlen)
+{
+ int afd;
+ char *s;
+ mpint *pub = nil;
+ RSApub *rsapub;
+ AuthRpc *rpc;
+
+ // start talking to factotum
+ if((afd = open("/mnt/factotum/rpc", ORDWR)) < 0)
+ return nil;
+ if((rpc = auth_allocrpc(afd)) == nil){
+ close(afd);
+ return nil;
+ }
+ s = "proto=rsa service=tls role=client";
+ if(auth_rpc(rpc, "start", s, strlen(s)) != ARok){
+ factotum_rsa_close(rpc);
+ return nil;
+ }
+
+ // roll factotum keyring around to match certificate
+ rsapub = X509toRSApub(cert, certlen, nil, 0);
+ while(1){
+ if(auth_rpc(rpc, "read", nil, 0) != ARok){
+ factotum_rsa_close(rpc);
+ rpc = nil;
+ goto done;
+ }
+ pub = strtomp(rpc->arg, nil, 16, nil);
+ assert(pub != nil);
+ if(mpcmp(pub,rsapub->n) == 0)
+ break;
+ }
+done:
+ mpfree(pub);
+ rsapubfree(rsapub);
+ return rpc;
+}
+
+static mpint*
+factotum_rsa_decrypt(AuthRpc *rpc, mpint *cipher)
+{
+ char *p;
+ int rv;
+
+ if((p = mptoa(cipher, 16, nil, 0)) == nil)
+ return nil;
+ rv = auth_rpc(rpc, "write", p, strlen(p));
+ free(p);
+ if(rv != ARok || auth_rpc(rpc, "read", nil, 0) != ARok)
+ return nil;
+ mpfree(cipher);
+ return strtomp(rpc->arg, nil, 16, nil);
+}
+
+static void
+factotum_rsa_close(AuthRpc*rpc)
+{
+ if(!rpc)
+ return;
+ close(rpc->afd);
+ auth_freerpc(rpc);
+}
+
+static void
+tlsPmd5(uchar *buf, int nbuf, uchar *key, int nkey, uchar *label, int nlabel, uchar *seed0, int nseed0, uchar *seed1, int nseed1)
+{
+ uchar ai[MD5dlen], tmp[MD5dlen];
+ int i, n;
+ MD5state *s;
+
+ // generate a1
+ s = hmac_md5(label, nlabel, key, nkey, nil, nil);
+ s = hmac_md5(seed0, nseed0, key, nkey, nil, s);
+ hmac_md5(seed1, nseed1, key, nkey, ai, s);
+
+ while(nbuf > 0) {
+ s = hmac_md5(ai, MD5dlen, key, nkey, nil, nil);
+ s = hmac_md5(label, nlabel, key, nkey, nil, s);
+ s = hmac_md5(seed0, nseed0, key, nkey, nil, s);
+ hmac_md5(seed1, nseed1, key, nkey, tmp, s);
+ n = MD5dlen;
+ if(n > nbuf)
+ n = nbuf;
+ for(i = 0; i < n; i++)
+ buf[i] ^= tmp[i];
+ buf += n;
+ nbuf -= n;
+ hmac_md5(ai, MD5dlen, key, nkey, tmp, nil);
+ memmove(ai, tmp, MD5dlen);
+ }
+}
+
+static void
+tlsPsha1(uchar *buf, int nbuf, uchar *key, int nkey, uchar *label, int nlabel, uchar *seed0, int nseed0, uchar *seed1, int nseed1)
+{
+ uchar ai[SHA1dlen], tmp[SHA1dlen];
+ int i, n;
+ SHAstate *s;
+
+ // generate a1
+ s = hmac_sha1(label, nlabel, key, nkey, nil, nil);
+ s = hmac_sha1(seed0, nseed0, key, nkey, nil, s);
+ hmac_sha1(seed1, nseed1, key, nkey, ai, s);
+
+ while(nbuf > 0) {
+ s = hmac_sha1(ai, SHA1dlen, key, nkey, nil, nil);
+ s = hmac_sha1(label, nlabel, key, nkey, nil, s);
+ s = hmac_sha1(seed0, nseed0, key, nkey, nil, s);
+ hmac_sha1(seed1, nseed1, key, nkey, tmp, s);
+ n = SHA1dlen;
+ if(n > nbuf)
+ n = nbuf;
+ for(i = 0; i < n; i++)
+ buf[i] ^= tmp[i];
+ buf += n;
+ nbuf -= n;
+ hmac_sha1(ai, SHA1dlen, key, nkey, tmp, nil);
+ memmove(ai, tmp, SHA1dlen);
+ }
+}
+
+// fill buf with md5(args)^sha1(args)
+static void
+tlsPRF(uchar *buf, int nbuf, uchar *key, int nkey, char *label, uchar *seed0, int nseed0, uchar *seed1, int nseed1)
+{
+ int i;
+ int nlabel = strlen(label);
+ int n = (nkey + 1) >> 1;
+
+ for(i = 0; i < nbuf; i++)
+ buf[i] = 0;
+ tlsPmd5(buf, nbuf, key, n, (uchar*)label, nlabel, seed0, nseed0, seed1, nseed1);
+ tlsPsha1(buf, nbuf, key+nkey-n, n, (uchar*)label, nlabel, seed0, nseed0, seed1, nseed1);
+}
+
+/*
+ * for setting server session id's
+ */
+static Lock sidLock;
+static long maxSid = 1;
+
+/* the keys are verified to have the same public components
+ * and to function correctly with pkcs 1 encryption and decryption. */
+static TlsSec*
+tlsSecInits(int cvers, uchar *csid, int ncsid, uchar *crandom, uchar *ssid, int *nssid, uchar *srandom)
+{
+ TlsSec *sec = emalloc(sizeof(*sec));
+
+ USED(csid); USED(ncsid); // ignore csid for now
+
+ memmove(sec->crandom, crandom, RandomSize);
+ sec->clientVers = cvers;
+
+ put32(sec->srandom, time(0));
+ genrandom(sec->srandom+4, RandomSize-4);
+ memmove(srandom, sec->srandom, RandomSize);
+
+ /*
+ * make up a unique sid: use our pid, and and incrementing id
+ * can signal no sid by setting nssid to 0.
+ */
+ memset(ssid, 0, SidSize);
+ put32(ssid, getpid());
+ lock(&sidLock);
+ put32(ssid+4, maxSid++);
+ unlock(&sidLock);
+ *nssid = SidSize;
+ return sec;
+}
+
+static int
+tlsSecSecrets(TlsSec *sec, int vers, uchar *epm, int nepm, uchar *kd, int nkd)
+{
+ if(epm != nil){
+ if(setVers(sec, vers) < 0)
+ goto Err;
+ serverMasterSecret(sec, epm, nepm);
+ }else if(sec->vers != vers){
+ werrstr("mismatched session versions");
+ goto Err;
+ }
+ setSecrets(sec, kd, nkd);
+ return 0;
+Err:
+ sec->ok = -1;
+ return -1;
+}
+
+static TlsSec*
+tlsSecInitc(int cvers, uchar *crandom)
+{
+ TlsSec *sec = emalloc(sizeof(*sec));
+ sec->clientVers = cvers;
+ put32(sec->crandom, time(0));
+ genrandom(sec->crandom+4, RandomSize-4);
+ memmove(crandom, sec->crandom, RandomSize);
+ return sec;
+}
+
+static int
+tlsSecSecretc(TlsSec *sec, uchar *sid, int nsid, uchar *srandom, uchar *cert, int ncert, int vers, uchar **epm, int *nepm, uchar *kd, int nkd)
+{
+ RSApub *pub;
+
+ pub = nil;
+
+ USED(sid);
+ USED(nsid);
+
+ memmove(sec->srandom, srandom, RandomSize);
+
+ if(setVers(sec, vers) < 0)
+ goto Err;
+
+ pub = X509toRSApub(cert, ncert, nil, 0);
+ if(pub == nil){
+ werrstr("invalid x509/rsa certificate");
+ goto Err;
+ }
+ if(clientMasterSecret(sec, pub, epm, nepm) < 0)
+ goto Err;
+ rsapubfree(pub);
+ setSecrets(sec, kd, nkd);
+ return 0;
+
+Err:
+ if(pub != nil)
+ rsapubfree(pub);
+ sec->ok = -1;
+ return -1;
+}
+
+static int
+tlsSecFinished(TlsSec *sec, MD5state md5, SHAstate sha1, uchar *fin, int nfin, int isclient)
+{
+ if(sec->nfin != nfin){
+ sec->ok = -1;
+ werrstr("invalid finished exchange");
+ return -1;
+ }
+ md5.malloced = 0;
+ sha1.malloced = 0;
+ (*sec->setFinished)(sec, md5, sha1, fin, isclient);
+ return 1;
+}
+
+static void
+tlsSecOk(TlsSec *sec)
+{
+ if(sec->ok == 0)
+ sec->ok = 1;
+}
+
+static void
+tlsSecKill(TlsSec *sec)
+{
+ if(!sec)
+ return;
+ factotum_rsa_close(sec->rpc);
+ sec->ok = -1;
+}
+
+static void
+tlsSecClose(TlsSec *sec)
+{
+ if(!sec)
+ return;
+ factotum_rsa_close(sec->rpc);
+ free(sec->server);
+ free(sec);
+}
+
+static int
+setVers(TlsSec *sec, int v)
+{
+ if(v == SSL3Version){
+ sec->setFinished = sslSetFinished;
+ sec->nfin = SSL3FinishedLen;
+ sec->prf = sslPRF;
+ }else if(v == TLSVersion){
+ sec->setFinished = tlsSetFinished;
+ sec->nfin = TLSFinishedLen;
+ sec->prf = tlsPRF;
+ }else{
+ werrstr("invalid version");
+ return -1;
+ }
+ sec->vers = v;
+ return 0;
+}
+
+/*
+ * generate secret keys from the master secret.
+ *
+ * different crypto selections will require different amounts
+ * of key expansion and use of key expansion data,
+ * but it's all generated using the same function.
+ */
+static void
+setSecrets(TlsSec *sec, uchar *kd, int nkd)
+{
+ (*sec->prf)(kd, nkd, sec->sec, MasterSecretSize, "key expansion",
+ sec->srandom, RandomSize, sec->crandom, RandomSize);
+}
+
+/*
+ * set the master secret from the pre-master secret.
+ */
+static void
+setMasterSecret(TlsSec *sec, Bytes *pm)
+{
+ (*sec->prf)(sec->sec, MasterSecretSize, pm->data, MasterSecretSize, "master secret",
+ sec->crandom, RandomSize, sec->srandom, RandomSize);
+}
+
+static void
+serverMasterSecret(TlsSec *sec, uchar *epm, int nepm)
+{
+ Bytes *pm;
+
+ pm = pkcs1_decrypt(sec, epm, nepm);
+
+ // if the client messed up, just continue as if everything is ok,
+ // to prevent attacks to check for correctly formatted messages.
+ // Hence the fprint(2,) can't be replaced by tlsError(), which sends an Alert msg to the client.
+ if(sec->ok < 0 || pm == nil || get16(pm->data) != sec->clientVers){
+ fprint(2, "serverMasterSecret failed ok=%d pm=%p pmvers=%x cvers=%x nepm=%d\n",
+ sec->ok, pm, pm ? get16(pm->data) : -1, sec->clientVers, nepm);
+ sec->ok = -1;
+ if(pm != nil)
+ freebytes(pm);
+ pm = newbytes(MasterSecretSize);
+ genrandom(pm->data, MasterSecretSize);
+ }
+ setMasterSecret(sec, pm);
+ memset(pm->data, 0, pm->len);
+ freebytes(pm);
+}
+
+static int
+clientMasterSecret(TlsSec *sec, RSApub *pub, uchar **epm, int *nepm)
+{
+ Bytes *pm, *key;
+
+ pm = newbytes(MasterSecretSize);
+ put16(pm->data, sec->clientVers);
+ genrandom(pm->data+2, MasterSecretSize - 2);
+
+ setMasterSecret(sec, pm);
+
+ key = pkcs1_encrypt(pm, pub, 2);
+ memset(pm->data, 0, pm->len);
+ freebytes(pm);
+ if(key == nil){
+ werrstr("tls pkcs1_encrypt failed");
+ return -1;
+ }
+
+ *nepm = key->len;
+ *epm = malloc(*nepm);
+ if(*epm == nil){
+ freebytes(key);
+ werrstr("out of memory");
+ return -1;
+ }
+ memmove(*epm, key->data, *nepm);
+
+ freebytes(key);
+
+ return 1;
+}
+
+static void
+sslSetFinished(TlsSec *sec, MD5state hsmd5, SHAstate hssha1, uchar *finished, int isClient)
+{
+ DigestState *s;
+ uchar h0[MD5dlen], h1[SHA1dlen], pad[48];
+ char *label;
+
+ if(isClient)
+ label = "CLNT";
+ else
+ label = "SRVR";
+
+ md5((uchar*)label, 4, nil, &hsmd5);
+ md5(sec->sec, MasterSecretSize, nil, &hsmd5);
+ memset(pad, 0x36, 48);
+ md5(pad, 48, nil, &hsmd5);
+ md5(nil, 0, h0, &hsmd5);
+ memset(pad, 0x5C, 48);
+ s = md5(sec->sec, MasterSecretSize, nil, nil);
+ s = md5(pad, 48, nil, s);
+ md5(h0, MD5dlen, finished, s);
+
+ sha1((uchar*)label, 4, nil, &hssha1);
+ sha1(sec->sec, MasterSecretSize, nil, &hssha1);
+ memset(pad, 0x36, 40);
+ sha1(pad, 40, nil, &hssha1);
+ sha1(nil, 0, h1, &hssha1);
+ memset(pad, 0x5C, 40);
+ s = sha1(sec->sec, MasterSecretSize, nil, nil);
+ s = sha1(pad, 40, nil, s);
+ sha1(h1, SHA1dlen, finished + MD5dlen, s);
+}
+
+// fill "finished" arg with md5(args)^sha1(args)
+static void
+tlsSetFinished(TlsSec *sec, MD5state hsmd5, SHAstate hssha1, uchar *finished, int isClient)
+{
+ uchar h0[MD5dlen], h1[SHA1dlen];
+ char *label;
+
+ // get current hash value, but allow further messages to be hashed in
+ md5(nil, 0, h0, &hsmd5);
+ sha1(nil, 0, h1, &hssha1);
+
+ if(isClient)
+ label = "client finished";
+ else
+ label = "server finished";
+ tlsPRF(finished, TLSFinishedLen, sec->sec, MasterSecretSize, label, h0, MD5dlen, h1, SHA1dlen);
+}
+
+static void
+sslPRF(uchar *buf, int nbuf, uchar *key, int nkey, char *label, uchar *seed0, int nseed0, uchar *seed1, int nseed1)
+{
+ DigestState *s;
+ uchar sha1dig[SHA1dlen], md5dig[MD5dlen], tmp[26];
+ int i, n, len;
+
+ USED(label);
+ len = 1;
+ while(nbuf > 0){
+ if(len > 26)
+ return;
+ for(i = 0; i < len; i++)
+ tmp[i] = 'A' - 1 + len;
+ s = sha1(tmp, len, nil, nil);
+ s = sha1(key, nkey, nil, s);
+ s = sha1(seed0, nseed0, nil, s);
+ sha1(seed1, nseed1, sha1dig, s);
+ s = md5(key, nkey, nil, nil);
+ md5(sha1dig, SHA1dlen, md5dig, s);
+ n = MD5dlen;
+ if(n > nbuf)
+ n = nbuf;
+ memmove(buf, md5dig, n);
+ buf += n;
+ nbuf -= n;
+ len++;
+ }
+}
+
+static mpint*
+bytestomp(Bytes* bytes)
+{
+ mpint* ans;
+
+ ans = betomp(bytes->data, bytes->len, nil);
+ return ans;
+}
+
+/*
+ * Convert mpint* to Bytes, putting high order byte first.
+ */
+static Bytes*
+mptobytes(mpint* big)
+{
+ int n, m;
+ uchar *a;
+ Bytes* ans;
+
+ n = (mpsignif(big)+7)/8;
+ m = mptobe(big, nil, n, &a);
+ ans = makebytes(a, m);
+ return ans;
+}
+
+// Do RSA computation on block according to key, and pad
+// result on left with zeros to make it modlen long.
+static Bytes*
+rsacomp(Bytes* block, RSApub* key, int modlen)
+{
+ mpint *x, *y;
+ Bytes *a, *ybytes;
+ int ylen;
+
+ x = bytestomp(block);
+ y = rsaencrypt(key, x, nil);
+ mpfree(x);
+ ybytes = mptobytes(y);
+ ylen = ybytes->len;
+
+ if(ylen < modlen) {
+ a = newbytes(modlen);
+ memset(a->data, 0, modlen-ylen);
+ memmove(a->data+modlen-ylen, ybytes->data, ylen);
+ freebytes(ybytes);
+ ybytes = a;
+ }
+ else if(ylen > modlen) {
+ // assume it has leading zeros (mod should make it so)
+ a = newbytes(modlen);
+ memmove(a->data, ybytes->data, modlen);
+ freebytes(ybytes);
+ ybytes = a;
+ }
+ mpfree(y);
+ return ybytes;
+}
+
+// encrypt data according to PKCS#1, /lib/rfc/rfc2437 9.1.2.1
+static Bytes*
+pkcs1_encrypt(Bytes* data, RSApub* key, int blocktype)
+{
+ Bytes *pad, *eb, *ans;
+ int i, dlen, padlen, modlen;
+
+ modlen = (mpsignif(key->n)+7)/8;
+ dlen = data->len;
+ if(modlen < 12 || dlen > modlen - 11)
+ return nil;
+ padlen = modlen - 3 - dlen;
+ pad = newbytes(padlen);
+ genrandom(pad->data, padlen);
+ for(i = 0; i < padlen; i++) {
+ if(blocktype == 0)
+ pad->data[i] = 0;
+ else if(blocktype == 1)
+ pad->data[i] = 255;
+ else if(pad->data[i] == 0)
+ pad->data[i] = 1;
+ }
+ eb = newbytes(modlen);
+ eb->data[0] = 0;
+ eb->data[1] = blocktype;
+ memmove(eb->data+2, pad->data, padlen);
+ eb->data[padlen+2] = 0;
+ memmove(eb->data+padlen+3, data->data, dlen);
+ ans = rsacomp(eb, key, modlen);
+ freebytes(eb);
+ freebytes(pad);
+ return ans;
+}
+
+// decrypt data according to PKCS#1, with given key.
+// expect a block type of 2.
+static Bytes*
+pkcs1_decrypt(TlsSec *sec, uchar *epm, int nepm)
+{
+ Bytes *eb, *ans = nil;
+ int i, modlen;
+ mpint *x, *y;
+
+ modlen = (mpsignif(sec->rsapub->n)+7)/8;
+ if(nepm != modlen)
+ return nil;
+ x = betomp(epm, nepm, nil);
+ y = factotum_rsa_decrypt(sec->rpc, x);
+ if(y == nil)
+ return nil;
+ eb = mptobytes(y);
+ if(eb->len < modlen){ // pad on left with zeros
+ ans = newbytes(modlen);
+ memset(ans->data, 0, modlen-eb->len);
+ memmove(ans->data+modlen-eb->len, eb->data, eb->len);
+ freebytes(eb);
+ eb = ans;
+ }
+ if(eb->data[0] == 0 && eb->data[1] == 2) {
+ for(i = 2; i < modlen; i++)
+ if(eb->data[i] == 0)
+ break;
+ if(i < modlen - 1)
+ ans = makebytes(eb->data+i+1, modlen-(i+1));
+ }
+ freebytes(eb);
+ return ans;
+}
+
+
+//================= general utility functions ========================
+
+static void *
+emalloc(int n)
+{
+ void *p;
+ if(n==0)
+ n=1;
+ p = malloc(n);
+ if(p == nil){
+ exits("out of memory");
+ }
+ memset(p, 0, n);
+ return p;
+}
+
+static void *
+erealloc(void *ReallocP, int ReallocN)
+{
+ if(ReallocN == 0)
+ ReallocN = 1;
+ if(!ReallocP)
+ ReallocP = emalloc(ReallocN);
+ else if(!(ReallocP = realloc(ReallocP, ReallocN))){
+ exits("out of memory");
+ }
+ return(ReallocP);
+}
+
+static void
+put32(uchar *p, u32int x)
+{
+ p[0] = x>>24;
+ p[1] = x>>16;
+ p[2] = x>>8;
+ p[3] = x;
+}
+
+static void
+put24(uchar *p, int x)
+{
+ p[0] = x>>16;
+ p[1] = x>>8;
+ p[2] = x;
+}
+
+static void
+put16(uchar *p, int x)
+{
+ p[0] = x>>8;
+ p[1] = x;
+}
+
+static u32int
+get32(uchar *p)
+{
+ return (p[0]<<24)|(p[1]<<16)|(p[2]<<8)|p[3];
+}
+
+static int
+get24(uchar *p)
+{
+ return (p[0]<<16)|(p[1]<<8)|p[2];
+}
+
+static int
+get16(uchar *p)
+{
+ return (p[0]<<8)|p[1];
+}
+
+/* ANSI offsetof() */
+#define OFFSET(x, s) ((int)(&(((s*)0)->x)))
+
+/*
+ * malloc and return a new Bytes structure capable of
+ * holding len bytes. (len >= 0)
+ * Used to use crypt_malloc, which aborts if malloc fails.
+ */
+static Bytes*
+newbytes(int len)
+{
+ Bytes* ans;
+
+ ans = (Bytes*)malloc(OFFSET(data[0], Bytes) + len);
+ ans->len = len;
+ return ans;
+}
+
+/*
+ * newbytes(len), with data initialized from buf
+ */
+static Bytes*
+makebytes(uchar* buf, int len)
+{
+ Bytes* ans;
+
+ ans = newbytes(len);
+ memmove(ans->data, buf, len);
+ return ans;
+}
+
+static void
+freebytes(Bytes* b)
+{
+ if(b != nil)
+ free(b);
+}
+
+/* len is number of ints */
+static Ints*
+newints(int len)
+{
+ Ints* ans;
+
+ ans = (Ints*)malloc(OFFSET(data[0], Ints) + len*sizeof(int));
+ ans->len = len;
+ return ans;
+}
+
+static Ints*
+makeints(int* buf, int len)
+{
+ Ints* ans;
+
+ ans = newints(len);
+ if(len > 0)
+ memmove(ans->data, buf, len*sizeof(int));
+ return ans;
+}
+
+static void
+freeints(Ints* b)
+{
+ if(b != nil)
+ free(b);
+}
diff --git a/src/libsec/port/x509.c b/src/libsec/port/x509.c
new file mode 100644
index 0000000..7aa0dd7
--- /dev/null
+++ b/src/libsec/port/x509.c
@@ -0,0 +1,2524 @@
+#include <u.h>
+#include <libc.h>
+#include <mp.h>
+#include <libsec.h>
+
+typedef DigestState*(*DigestFun)(uchar*,ulong,uchar*,DigestState*);
+
+/* ANSI offsetof, backwards. */
+#define OFFSETOF(a, b) offsetof(b, a)
+
+/*=============================================================*/
+/* general ASN1 declarations and parsing
+ *
+ * For now, this is used only for extracting the key from an
+ * X509 certificate, so the entire collection is hidden. But
+ * someday we should probably make the functions visible and
+ * give them their own man page.
+ */
+typedef struct Elem Elem;
+typedef struct Tag Tag;
+typedef struct Value Value;
+typedef struct Bytes Bytes;
+typedef struct Ints Ints;
+typedef struct Bits Bits;
+typedef struct Elist Elist;
+
+/* tag classes */
+#define Universal 0
+#define Context 0x80
+
+/* universal tags */
+#define BOOLEAN 1
+#define INTEGER 2
+#define BIT_STRING 3
+#define OCTET_STRING 4
+#define NULLTAG 5
+#define OBJECT_ID 6
+#define ObjectDescriptor 7
+#define EXTERNAL 8
+#define REAL 9
+#define ENUMERATED 10
+#define EMBEDDED_PDV 11
+#define SEQUENCE 16 /* also SEQUENCE OF */
+#define SETOF 17 /* also SETOF OF */
+#define NumericString 18
+#define PrintableString 19
+#define TeletexString 20
+#define VideotexString 21
+#define IA5String 22
+#define UTCTime 23
+#define GeneralizedTime 24
+#define GraphicString 25
+#define VisibleString 26
+#define GeneralString 27
+#define UniversalString 28
+#define BMPString 30
+
+struct Bytes {
+ int len;
+ uchar data[1];
+};
+
+struct Ints {
+ int len;
+ int data[1];
+};
+
+struct Bits {
+ int len; /* number of bytes */
+ int unusedbits; /* unused bits in last byte */
+ uchar data[1]; /* most-significant bit first */
+};
+
+struct Tag {
+ int class;
+ int num;
+};
+
+enum { VBool, VInt, VOctets, VBigInt, VReal, VOther,
+ VBitString, VNull, VEOC, VObjId, VString, VSeq, VSet };
+struct Value {
+ int tag; /* VBool, etc. */
+ union {
+ int boolval;
+ int intval;
+ Bytes* octetsval;
+ Bytes* bigintval;
+ Bytes* realval; /* undecoded; hardly ever used */
+ Bytes* otherval;
+ Bits* bitstringval;
+ Ints* objidval;
+ char* stringval;
+ Elist* seqval;
+ Elist* setval;
+ } u; /* (Don't use anonymous unions, for ease of porting) */
+};
+
+struct Elem {
+ Tag tag;
+ Value val;
+};
+
+struct Elist {
+ Elist* tl;
+ Elem hd;
+};
+
+/* decoding errors */
+enum { ASN_OK, ASN_ESHORT, ASN_ETOOBIG, ASN_EVALLEN,
+ ASN_ECONSTR, ASN_EPRIM, ASN_EINVAL, ASN_EUNIMPL };
+
+
+/* here are the functions to consider making extern someday */
+static Bytes* newbytes(int len);
+static Bytes* makebytes(uchar* buf, int len);
+static void freebytes(Bytes* b);
+static Bytes* catbytes(Bytes* b1, Bytes* b2);
+static Ints* newints(int len);
+static Ints* makeints(int* buf, int len);
+static void freeints(Ints* b);
+static Bits* newbits(int len);
+static Bits* makebits(uchar* buf, int len, int unusedbits);
+static void freebits(Bits* b);
+static Elist* mkel(Elem e, Elist* tail);
+static void freeelist(Elist* el);
+static int elistlen(Elist* el);
+static int is_seq(Elem* pe, Elist** pseq);
+static int is_set(Elem* pe, Elist** pset);
+static int is_int(Elem* pe, int* pint);
+static int is_bigint(Elem* pe, Bytes** pbigint);
+static int is_bitstring(Elem* pe, Bits** pbits);
+static int is_octetstring(Elem* pe, Bytes** poctets);
+static int is_oid(Elem* pe, Ints** poid);
+static int is_string(Elem* pe, char** pstring);
+static int is_time(Elem* pe, char** ptime);
+static int decode(uchar* a, int alen, Elem* pelem);
+static int decode_seq(uchar* a, int alen, Elist** pelist);
+static int decode_value(uchar* a, int alen, int kind, int isconstr, Value* pval);
+static int encode(Elem e, Bytes** pbytes);
+static int oid_lookup(Ints* o, Ints** tab);
+static void freevalfields(Value* v);
+static mpint *asn1mpint(Elem *e);
+
+
+
+#define TAG_MASK 0x1F
+#define CONSTR_MASK 0x20
+#define CLASS_MASK 0xC0
+#define MAXOBJIDLEN 20
+
+static int ber_decode(uchar** pp, uchar* pend, Elem* pelem);
+static int tag_decode(uchar** pp, uchar* pend, Tag* ptag, int* pisconstr);
+static int length_decode(uchar** pp, uchar* pend, int* plength);
+static int value_decode(uchar** pp, uchar* pend, int length, int kind, int isconstr, Value* pval);
+static int int_decode(uchar** pp, uchar* pend, int count, int unsgned, int* pint);
+static int uint7_decode(uchar** pp, uchar* pend, int* pint);
+static int octet_decode(uchar** pp, uchar* pend, int length, int isconstr, Bytes** pbytes);
+static int seq_decode(uchar** pp, uchar* pend, int length, int isconstr, Elist** pelist);
+static int enc(uchar** pp, Elem e, int lenonly);
+static int val_enc(uchar** pp, Elem e, int *pconstr, int lenonly);
+static void uint7_enc(uchar** pp, int num, int lenonly);
+static void int_enc(uchar** pp, int num, int unsgned, int lenonly);
+
+static void *
+emalloc(int n)
+{
+ void *p;
+ if(n==0)
+ n=1;
+ p = malloc(n);
+ if(p == nil){
+ exits("out of memory");
+ }
+ memset(p, 0, n);
+ return p;
+}
+
+static char*
+estrdup(char *s)
+{
+ char *d, *d0;
+
+ if(!s)
+ return 0;
+ d = d0 = emalloc(strlen(s)+1);
+ while(*d++ = *s++)
+ ;
+ return d0;
+}
+
+
+/*
+ * Decode a[0..len] as a BER encoding of an ASN1 type.
+ * The return value is one of ASN_OK, etc.
+ * Depending on the error, the returned elem may or may not
+ * be nil.
+ */
+static int
+decode(uchar* a, int alen, Elem* pelem)
+{
+ uchar* p = a;
+
+ return ber_decode(&p, &a[alen], pelem);
+}
+
+/*
+ * Like decode, but continue decoding after first element
+ * of array ends.
+ */
+static int
+decode_seq(uchar* a, int alen, Elist** pelist)
+{
+ uchar* p = a;
+
+ return seq_decode(&p, &a[alen], -1, 1, pelist);
+}
+
+/*
+ * Decode the whole array as a BER encoding of an ASN1 value,
+ * (i.e., the part after the tag and length).
+ * Assume the value is encoded as universal tag "kind".
+ * The constr arg is 1 if the value is constructed, 0 if primitive.
+ * If there's an error, the return string will contain the error.
+ * Depending on the error, the returned value may or may not
+ * be nil.
+ */
+static int
+decode_value(uchar* a, int alen, int kind, int isconstr, Value* pval)
+{
+ uchar* p = a;
+
+ return value_decode(&p, &a[alen], alen, kind, isconstr, pval);
+}
+
+/*
+ * All of the following decoding routines take arguments:
+ * uchar **pp;
+ * uchar *pend;
+ * Where parsing is supposed to start at **pp, and when parsing
+ * is done, *pp is updated to point at next char to be parsed.
+ * The pend pointer is just past end of string; an error should
+ * be returned parsing hasn't finished by then.
+ *
+ * The returned int is ASN_OK if all went fine, else ASN_ESHORT, etc.
+ * The remaining argument(s) are pointers to where parsed entity goes.
+ */
+
+/* Decode an ASN1 'Elem' (tag, length, value) */
+static int
+ber_decode(uchar** pp, uchar* pend, Elem* pelem)
+{
+ int err;
+ int isconstr;
+ int length;
+ Tag tag;
+ Value val;
+
+ err = tag_decode(pp, pend, &tag, &isconstr);
+ if(err == ASN_OK) {
+ err = length_decode(pp, pend, &length);
+ if(err == ASN_OK) {
+ if(tag.class == Universal)
+ err = value_decode(pp, pend, length, tag.num, isconstr, &val);
+ else
+ err = value_decode(pp, pend, length, OCTET_STRING, 0, &val);
+ if(err == ASN_OK) {
+ pelem->tag = tag;
+ pelem->val = val;
+ }
+ }
+ }
+ return err;
+}
+
+/* Decode a tag field */
+static int
+tag_decode(uchar** pp, uchar* pend, Tag* ptag, int* pisconstr)
+{
+ int err;
+ int v;
+ uchar* p;
+
+ err = ASN_OK;
+ p = *pp;
+ if(pend-p >= 2) {
+ v = *p++;
+ ptag->class = v&CLASS_MASK;
+ if(v&CONSTR_MASK)
+ *pisconstr = 1;
+ else
+ *pisconstr = 0;
+ v &= TAG_MASK;
+ if(v == TAG_MASK)
+ err = uint7_decode(&p, pend, &v);
+ ptag->num = v;
+ }
+ else
+ err = ASN_ESHORT;
+ *pp = p;
+ return err;
+}
+
+/* Decode a length field */
+static int
+length_decode(uchar** pp, uchar* pend, int* plength)
+{
+ int err;
+ int num;
+ int v;
+ uchar* p;
+
+ err = ASN_OK;
+ num = 0;
+ p = *pp;
+ if(p < pend) {
+ v = *p++;
+ if(v&0x80)
+ err = int_decode(&p, pend, v&0x7F, 1, &num);
+ else
+ num = v;
+ }
+ else
+ err = ASN_ESHORT;
+ *pp = p;
+ *plength = num;
+ return err;
+}
+
+/* Decode a value field */
+static int
+value_decode(uchar** pp, uchar* pend, int length, int kind, int isconstr, Value* pval)
+{
+ int err;
+ Bytes* va;
+ int num;
+ int bitsunused;
+ int subids[MAXOBJIDLEN];
+ int isubid;
+ Elist* vl;
+ uchar* p;
+ uchar* pe;
+
+ err = ASN_OK;
+ p = *pp;
+ if(length == -1) { /* "indefinite" length spec */
+ if(!isconstr)
+ err = ASN_EINVAL;
+ }
+ else if(p + length > pend)
+ err = ASN_EVALLEN;
+ if(err != ASN_OK)
+ return err;
+
+ switch(kind) {
+ case 0:
+ /* marker for end of indefinite constructions */
+ if(length == 0)
+ pval->tag = VNull;
+ else
+ err = ASN_EINVAL;
+ break;
+
+ case BOOLEAN:
+ if(isconstr)
+ err = ASN_ECONSTR;
+ else if(length != 1)
+ err = ASN_EVALLEN;
+ else {
+ pval->tag = VBool;
+ pval->u.boolval = (*p++ != 0);
+ }
+ break;
+
+ case INTEGER:
+ case ENUMERATED:
+ if(isconstr)
+ err = ASN_ECONSTR;
+ else if(length <= 4) {
+ err = int_decode(&p, pend, length, 0, &num);
+ if(err == ASN_OK) {
+ pval->tag = VInt;
+ pval->u.intval = num;
+ }
+ }
+ else {
+ pval->tag = VBigInt;
+ pval->u.bigintval = makebytes(p, length);
+ p += length;
+ }
+ break;
+
+ case BIT_STRING:
+ pval->tag = VBitString;
+ if(isconstr) {
+ if(length == -1 && p + 2 <= pend && *p == 0 && *(p+1) ==0) {
+ pval->u.bitstringval = makebits(0, 0, 0);
+ p += 2;
+ }
+ else
+ /* TODO: recurse and concat results */
+ err = ASN_EUNIMPL;
+ }
+ else {
+ if(length < 2) {
+ if(length == 1 && *p == 0) {
+ pval->u.bitstringval = makebits(0, 0, 0);
+ p++;
+ }
+ else
+ err = ASN_EINVAL;
+ }
+ else {
+ bitsunused = *p;
+ if(bitsunused > 7)
+ err = ASN_EINVAL;
+ else if(length > 0x0FFFFFFF)
+ err = ASN_ETOOBIG;
+ else {
+ pval->u.bitstringval = makebits(p+1, length-1, bitsunused);
+ p += length;
+ }
+ }
+ }
+ break;
+
+ case OCTET_STRING:
+ case ObjectDescriptor:
+ err = octet_decode(&p, pend, length, isconstr, &va);
+ if(err == ASN_OK) {
+ pval->tag = VOctets;
+ pval->u.octetsval = va;
+ }
+ break;
+
+ case NULLTAG:
+ if(isconstr)
+ err = ASN_ECONSTR;
+ else if(length != 0)
+ err = ASN_EVALLEN;
+ else
+ pval->tag = VNull;
+ break;
+
+ case OBJECT_ID:
+ if(isconstr)
+ err = ASN_ECONSTR;
+ else if(length == 0)
+ err = ASN_EVALLEN;
+ else {
+ isubid = 0;
+ pe = p+length;
+ while(p < pe && isubid < MAXOBJIDLEN) {
+ err = uint7_decode(&p, pend, &num);
+ if(err != ASN_OK)
+ break;
+ if(isubid == 0) {
+ subids[isubid++] = num / 40;
+ subids[isubid++] = num % 40;
+ }
+ else
+ subids[isubid++] = num;
+ }
+ if(err == ASN_OK) {
+ if(p != pe)
+ err = ASN_EVALLEN;
+ else {
+ pval->tag = VObjId;
+ pval->u.objidval = makeints(subids, isubid);
+ }
+ }
+ }
+ break;
+
+ case EXTERNAL:
+ case EMBEDDED_PDV:
+ /* TODO: parse this internally */
+ if(p+length > pend)
+ err = ASN_EVALLEN;
+ else {
+ pval->tag = VOther;
+ pval->u.otherval = makebytes(p, length);
+ p += length;
+ }
+ break;
+
+ case REAL:
+ /* Let the application decode */
+ if(isconstr)
+ err = ASN_ECONSTR;
+ else if(p+length > pend)
+ err = ASN_EVALLEN;
+ else {
+ pval->tag = VReal;
+ pval->u.realval = makebytes(p, length);
+ p += length;
+ }
+ break;
+
+ case SEQUENCE:
+ err = seq_decode(&p, pend, length, isconstr, &vl);
+ if(err == ASN_OK) {
+ pval->tag = VSeq ;
+ pval->u.seqval = vl;
+ }
+ break;
+
+ case SETOF:
+ err = seq_decode(&p, pend, length, isconstr, &vl);
+ if(err == ASN_OK) {
+ pval->tag = VSet;
+ pval->u.setval = vl;
+ }
+ break;
+
+ case NumericString:
+ case PrintableString:
+ case TeletexString:
+ case VideotexString:
+ case IA5String:
+ case UTCTime:
+ case GeneralizedTime:
+ case GraphicString:
+ case VisibleString:
+ case GeneralString:
+ case UniversalString:
+ case BMPString:
+ /* TODO: figure out when character set conversion is necessary */
+ err = octet_decode(&p, pend, length, isconstr, &va);
+ if(err == ASN_OK) {
+ pval->tag = VString;
+ pval->u.stringval = (char*)emalloc(va->len+1);
+ memmove(pval->u.stringval, va->data, va->len);
+ pval->u.stringval[va->len] = 0;
+ free(va);
+ }
+ break;
+
+ default:
+ if(p+length > pend)
+ err = ASN_EVALLEN;
+ else {
+ pval->tag = VOther;
+ pval->u.otherval = makebytes(p, length);
+ p += length;
+ }
+ break;
+ }
+ *pp = p;
+ return err;
+}
+
+/*
+ * Decode an int in format where count bytes are
+ * concatenated to form value.
+ * Although ASN1 allows any size integer, we return
+ * an error if the result doesn't fit in a 32-bit int.
+ * If unsgned is not set, make sure to propagate sign bit.
+ */
+static int
+int_decode(uchar** pp, uchar* pend, int count, int unsgned, int* pint)
+{
+ int err;
+ int num;
+ uchar* p;
+
+ p = *pp;
+ err = ASN_OK;
+ num = 0;
+ if(p+count <= pend) {
+ if((count > 4) || (unsgned && count == 4 && (*p&0x80)))
+ err = ASN_ETOOBIG;
+ else {
+ if(!unsgned && count > 0 && count < 4 && (*p&0x80))
+ num = -1; // set all bits, initially
+ while(count--)
+ num = (num << 8)|(*p++);
+ }
+ }
+ else
+ err = ASN_ESHORT;
+ *pint = num;
+ *pp = p;
+ return err;
+}
+
+/*
+ * Decode an unsigned int in format where each
+ * byte except last has high bit set, and remaining
+ * seven bits of each byte are concatenated to form value.
+ * Although ASN1 allows any size integer, we return
+ * an error if the result doesn't fit in a 32 bit int.
+ */
+static int
+uint7_decode(uchar** pp, uchar* pend, int* pint)
+{
+ int err;
+ int num;
+ int more;
+ int v;
+ uchar* p;
+
+ p = *pp;
+ err = ASN_OK;
+ num = 0;
+ more = 1;
+ while(more && p < pend) {
+ v = *p++;
+ if(num&0x7F000000) {
+ err = ASN_ETOOBIG;
+ break;
+ }
+ num <<= 7;
+ more = v&0x80;
+ num |= (v&0x7F);
+ }
+ if(p == pend)
+ err = ASN_ESHORT;
+ *pint = num;
+ *pp = p;
+ return err;
+}
+
+/*
+ * Decode an octet string, recursively if isconstr.
+ * We've already checked that length==-1 implies isconstr==1,
+ * and otherwise that specified length fits within (*pp..pend)
+ */
+static int
+octet_decode(uchar** pp, uchar* pend, int length, int isconstr, Bytes** pbytes)
+{
+ int err;
+ uchar* p;
+ Bytes* ans;
+ Bytes* newans;
+ uchar* pstart;
+ uchar* pold;
+ Elem elem;
+
+ err = ASN_OK;
+ p = *pp;
+ ans = nil;
+ if(length >= 0 && !isconstr) {
+ ans = makebytes(p, length);
+ p += length;
+ }
+ else {
+ /* constructed, either definite or indefinite length */
+ pstart = p;
+ for(;;) {
+ if(length >= 0 && p >= pstart + length) {
+ if(p != pstart + length)
+ err = ASN_EVALLEN;
+ break;
+ }
+ pold = p;
+ err = ber_decode(&p, pend, &elem);
+ if(err != ASN_OK)
+ break;
+ switch(elem.val.tag) {
+ case VOctets:
+ newans = catbytes(ans, elem.val.u.octetsval);
+ freebytes(ans);
+ ans = newans;
+ break;
+
+ case VEOC:
+ if(length != -1) {
+ p = pold;
+ err = ASN_EINVAL;
+ }
+ goto cloop_done;
+
+ default:
+ p = pold;
+ err = ASN_EINVAL;
+ goto cloop_done;
+ }
+ }
+cloop_done:
+ ;
+ }
+ *pp = p;
+ *pbytes = ans;
+ return err;
+}
+
+/*
+ * Decode a sequence or set.
+ * We've already checked that length==-1 implies isconstr==1,
+ * and otherwise that specified length fits within (*p..pend)
+ */
+static int
+seq_decode(uchar** pp, uchar* pend, int length, int isconstr, Elist** pelist)
+{
+ int err;
+ uchar* p;
+ uchar* pstart;
+ uchar* pold;
+ Elist* ans;
+ Elem elem;
+ Elist* lve;
+ Elist* lveold;
+
+ err = ASN_OK;
+ ans = nil;
+ p = *pp;
+ if(!isconstr)
+ err = ASN_EPRIM;
+ else {
+ /* constructed, either definite or indefinite length */
+ lve = nil;
+ pstart = p;
+ for(;;) {
+ if(length >= 0 && p >= pstart + length) {
+ if(p != pstart + length)
+ err = ASN_EVALLEN;
+ break;
+ }
+ pold = p;
+ err = ber_decode(&p, pend, &elem);
+ if(err != ASN_OK)
+ break;
+ if(elem.val.tag == VEOC) {
+ if(length != -1) {
+ p = pold;
+ err = ASN_EINVAL;
+ }
+ break;
+ }
+ else
+ lve = mkel(elem, lve);
+ }
+ if(err == ASN_OK) {
+ /* reverse back to original order */
+ while(lve != nil) {
+ lveold = lve;
+ lve = lve->tl;
+ lveold->tl = ans;
+ ans = lveold;
+ }
+ }
+ }
+ *pp = p;
+ *pelist = ans;
+ return err;
+}
+
+/*
+ * Encode e by BER rules, putting answer in *pbytes.
+ * This is done by first calling enc with lenonly==1
+ * to get the length of the needed buffer,
+ * then allocating the buffer and using enc again to fill it up.
+ */
+static int
+encode(Elem e, Bytes** pbytes)
+{
+ uchar* p;
+ Bytes* ans;
+ int err;
+ uchar uc;
+
+ p = &uc;
+ err = enc(&p, e, 1);
+ if(err == ASN_OK) {
+ ans = newbytes(p-&uc);
+ p = ans->data;
+ err = enc(&p, e, 0);
+ *pbytes = ans;
+ }
+ return err;
+}
+
+/*
+ * The various enc functions take a pointer to a pointer
+ * into a buffer, and encode their entity starting there,
+ * updating the pointer afterwards.
+ * If lenonly is 1, only the pointer update is done,
+ * allowing enc to be called first to calculate the needed
+ * buffer length.
+ * If lenonly is 0, it is assumed that the answer will fit.
+ */
+
+static int
+enc(uchar** pp, Elem e, int lenonly)
+{
+ int err;
+ int vlen;
+ int constr;
+ Tag tag;
+ int v;
+ int ilen;
+ uchar* p;
+ uchar* psave;
+
+ p = *pp;
+ err = val_enc(&p, e, &constr, 1);
+ if(err != ASN_OK)
+ return err;
+ vlen = p - *pp;
+ p = *pp;
+ tag = e.tag;
+ v = tag.class|constr;
+ if(tag.num < 31) {
+ if(!lenonly)
+ *p = (v|tag.num);
+ p++;
+ }
+ else {
+ if(!lenonly)
+ *p = (v|31);
+ p++;
+ if(tag.num < 0)
+ return ASN_EINVAL;
+ uint7_enc(&p, tag.num, lenonly);
+ }
+ if(vlen < 0x80) {
+ if(!lenonly)
+ *p = vlen;
+ p++;
+ }
+ else {
+ psave = p;
+ int_enc(&p, vlen, 1, 1);
+ ilen = p-psave;
+ p = psave;
+ if(!lenonly) {
+ *p++ = (0x80 | ilen);
+ int_enc(&p, vlen, 1, 0);
+ }
+ else
+ p += 1 + ilen;
+ }
+ if(!lenonly)
+ val_enc(&p, e, &constr, 0);
+ else
+ p += vlen;
+ *pp = p;
+ return err;
+}
+
+static int
+val_enc(uchar** pp, Elem e, int *pconstr, int lenonly)
+{
+ int err;
+ uchar* p;
+ int kind;
+ int cl;
+ int v;
+ Bytes* bb = nil;
+ Bits* bits;
+ Ints* oid;
+ int k;
+ Elist* el;
+ char* s;
+
+ p = *pp;
+ err = ASN_OK;
+ kind = e.tag.num;
+ cl = e.tag.class;
+ *pconstr = 0;
+ if(cl != Universal) {
+ switch(e.val.tag) {
+ case VBool:
+ kind = BOOLEAN;
+ break;
+ case VInt:
+ kind = INTEGER;
+ break;
+ case VBigInt:
+ kind = INTEGER;
+ break;
+ case VOctets:
+ kind = OCTET_STRING;
+ break;
+ case VReal:
+ kind = REAL;
+ break;
+ case VOther:
+ kind = OCTET_STRING;
+ break;
+ case VBitString:
+ kind = BIT_STRING;
+ break;
+ case VNull:
+ kind = NULLTAG;
+ break;
+ case VObjId:
+ kind = OBJECT_ID;
+ break;
+ case VString:
+ kind = UniversalString;
+ break;
+ case VSeq:
+ kind = SEQUENCE;
+ break;
+ case VSet:
+ kind = SETOF;
+ break;
+ }
+ }
+ switch(kind) {
+ case BOOLEAN:
+ if(is_int(&e, &v)) {
+ if(v != 0)
+ v = 255;
+ int_enc(&p, v, 1, lenonly);
+ }
+ else
+ err = ASN_EINVAL;
+ break;
+
+ case INTEGER:
+ case ENUMERATED:
+ if(is_int(&e, &v))
+ int_enc(&p, v, 0, lenonly);
+ else {
+ if(is_bigint(&e, &bb)) {
+ if(!lenonly)
+ memmove(p, bb->data, bb->len);
+ p += bb->len;
+ }
+ else
+ err = ASN_EINVAL;
+ }
+ break;
+
+ case BIT_STRING:
+ if(is_bitstring(&e, &bits)) {
+ if(bits->len == 0) {
+ if(!lenonly)
+ *p = 0;
+ p++;
+ }
+ else {
+ v = bits->unusedbits;
+ if(v < 0 || v > 7)
+ err = ASN_EINVAL;
+ else {
+ if(!lenonly) {
+ *p = v;
+ memmove(p+1, bits->data, bits->len);
+ }
+ p += 1 + bits->len;
+ }
+ }
+ }
+ else
+ err = ASN_EINVAL;
+ break;
+
+ case OCTET_STRING:
+ case ObjectDescriptor:
+ case EXTERNAL:
+ case REAL:
+ case EMBEDDED_PDV:
+ bb = nil;
+ switch(e.val.tag) {
+ case VOctets:
+ bb = e.val.u.octetsval;
+ break;
+ case VReal:
+ bb = e.val.u.realval;
+ break;
+ case VOther:
+ bb = e.val.u.otherval;
+ break;
+ }
+ if(bb != nil) {
+ if(!lenonly)
+ memmove(p, bb->data, bb->len);
+ p += bb->len;
+ }
+ else
+ err = ASN_EINVAL;
+ break;
+
+ case NULLTAG:
+ break;
+
+ case OBJECT_ID:
+ if(is_oid(&e, &oid)) {
+ for(k = 0; k < oid->len; k++) {
+ v = oid->data[k];
+ if(k == 0) {
+ v *= 40;
+ if(oid->len > 1)
+ v += oid->data[++k];
+ }
+ uint7_enc(&p, v, lenonly);
+ }
+ }
+ else
+ err = ASN_EINVAL;
+ break;
+
+ case SEQUENCE:
+ case SETOF:
+ el = nil;
+ if(e.val.tag == VSeq)
+ el = e.val.u.seqval;
+ else if(e.val.tag == VSet)
+ el = e.val.u.setval;
+ else
+ err = ASN_EINVAL;
+ if(el != nil) {
+ *pconstr = CONSTR_MASK;
+ for(; el != nil; el = el->tl) {
+ err = enc(&p, el->hd, lenonly);
+ if(err != ASN_OK)
+ break;
+ }
+ }
+ break;
+
+ case NumericString:
+ case PrintableString:
+ case TeletexString:
+ case VideotexString:
+ case IA5String:
+ case UTCTime:
+ case GeneralizedTime:
+ case GraphicString:
+ case VisibleString:
+ case GeneralString:
+ case UniversalString:
+ case BMPString:
+ if(e.val.tag == VString) {
+ s = e.val.u.stringval;
+ if(s != nil) {
+ v = strlen(s);
+ if(!lenonly)
+ memmove(p, s, v);
+ p += v;
+ }
+ }
+ else
+ err = ASN_EINVAL;
+ break;
+
+ default:
+ err = ASN_EINVAL;
+ }
+ *pp = p;
+ return err;
+}
+
+/*
+ * Encode num as unsigned 7 bit values with top bit 1 on all bytes
+ * except last, only putting in bytes if !lenonly.
+ */
+static void
+uint7_enc(uchar** pp, int num, int lenonly)
+{
+ int n;
+ int v;
+ int k;
+ uchar* p;
+
+ p = *pp;
+ n = 1;
+ v = num >> 7;
+ while(v > 0) {
+ v >>= 7;
+ n++;
+ }
+ if(lenonly)
+ p += n;
+ else {
+ for(k = (n - 1)*7; k > 0; k -= 7)
+ *p++= ((num >> k)|0x80);
+ *p++ = (num&0x7F);
+ }
+ *pp = p;
+}
+
+/*
+ * Encode num as unsigned or signed integer,
+ * only putting in bytes if !lenonly.
+ * Encoding is length followed by bytes to concatenate.
+ */
+static void
+int_enc(uchar** pp, int num, int unsgned, int lenonly)
+{
+ int v;
+ int n;
+ int prevv;
+ int k;
+ uchar* p;
+
+ p = *pp;
+ v = num;
+ if(v < 0)
+ v = -(v + 1);
+ n = 1;
+ prevv = v;
+ v >>= 8;
+ while(v > 0) {
+ prevv = v;
+ v >>= 8;
+ n++;
+ }
+ if(!unsgned && (prevv&0x80))
+ n++;
+ if(lenonly)
+ p += n;
+ else {
+ for(k = (n - 1)*8; k >= 0; k -= 8)
+ *p++ = (num >> k);
+ }
+ *pp = p;
+}
+
+static int
+ints_eq(Ints* a, Ints* b)
+{
+ int alen;
+ int i;
+
+ alen = a->len;
+ if(alen != b->len)
+ return 0;
+ for(i = 0; i < alen; i++)
+ if(a->data[i] != b->data[i])
+ return 0;
+ return 1;
+}
+
+/*
+ * Look up o in tab (which must have nil entry to terminate).
+ * Return index of matching entry, or -1 if none.
+ */
+static int
+oid_lookup(Ints* o, Ints** tab)
+{
+ int i;
+
+ for(i = 0; tab[i] != nil; i++)
+ if(ints_eq(o, tab[i]))
+ return i;
+ return -1;
+}
+
+/*
+ * Return true if *pe is a SEQUENCE, and set *pseq to
+ * the value of the sequence if so.
+ */
+static int
+is_seq(Elem* pe, Elist** pseq)
+{
+ if(pe->tag.class == Universal && pe->tag.num == SEQUENCE && pe->val.tag == VSeq) {
+ *pseq = pe->val.u.seqval;
+ return 1;
+ }
+ return 0;
+}
+
+static int
+is_set(Elem* pe, Elist** pset)
+{
+ if(pe->tag.class == Universal && pe->tag.num == SETOF && pe->val.tag == VSet) {
+ *pset = pe->val.u.setval;
+ return 1;
+ }
+ return 0;
+}
+
+static int
+is_int(Elem* pe, int* pint)
+{
+ if(pe->tag.class == Universal) {
+ if(pe->tag.num == INTEGER && pe->val.tag == VInt) {
+ *pint = pe->val.u.intval;
+ return 1;
+ }
+ else if(pe->tag.num == BOOLEAN && pe->val.tag == VBool) {
+ *pint = pe->val.u.boolval;
+ return 1;
+ }
+ }
+ return 0;
+}
+
+/*
+ * for convience, all VInt's are readable via this routine,
+ * as well as all VBigInt's
+ */
+static int
+is_bigint(Elem* pe, Bytes** pbigint)
+{
+ int v, n, i;
+
+ if(pe->tag.class == Universal && pe->tag.num == INTEGER) {
+ if(pe->val.tag == VBigInt)
+ *pbigint = pe->val.u.bigintval;
+ else if(pe->val.tag == VInt){
+ v = pe->val.u.intval;
+ for(n = 1; n < 4; n++)
+ if((1 << (8 * n)) > v)
+ break;
+ *pbigint = newbytes(n);
+ for(i = 0; i < n; i++)
+ (*pbigint)->data[i] = (v >> ((n - 1 - i) * 8));
+ }else
+ return 0;
+ return 1;
+ }
+ return 0;
+}
+
+static int
+is_bitstring(Elem* pe, Bits** pbits)
+{
+ if(pe->tag.class == Universal && pe->tag.num == BIT_STRING && pe->val.tag == VBitString) {
+ *pbits = pe->val.u.bitstringval;
+ return 1;
+ }
+ return 0;
+}
+
+static int
+is_octetstring(Elem* pe, Bytes** poctets)
+{
+ if(pe->tag.class == Universal && pe->tag.num == OCTET_STRING && pe->val.tag == VOctets) {
+ *poctets = pe->val.u.octetsval;
+ return 1;
+ }
+ return 0;
+}
+
+static int
+is_oid(Elem* pe, Ints** poid)
+{
+ if(pe->tag.class == Universal && pe->tag.num == OBJECT_ID && pe->val.tag == VObjId) {
+ *poid = pe->val.u.objidval;
+ return 1;
+ }
+ return 0;
+}
+
+static int
+is_string(Elem* pe, char** pstring)
+{
+ if(pe->tag.class == Universal) {
+ switch(pe->tag.num) {
+ case NumericString:
+ case PrintableString:
+ case TeletexString:
+ case VideotexString:
+ case IA5String:
+ case GraphicString:
+ case VisibleString:
+ case GeneralString:
+ case UniversalString:
+ case BMPString:
+ if(pe->val.tag == VString) {
+ *pstring = pe->val.u.stringval;
+ return 1;
+ }
+ }
+ }
+ return 0;
+}
+
+static int
+is_time(Elem* pe, char** ptime)
+{
+ if(pe->tag.class == Universal
+ && (pe->tag.num == UTCTime || pe->tag.num == GeneralizedTime)
+ && pe->val.tag == VString) {
+ *ptime = pe->val.u.stringval;
+ return 1;
+ }
+ return 0;
+}
+
+
+/*
+ * malloc and return a new Bytes structure capable of
+ * holding len bytes. (len >= 0)
+ */
+static Bytes*
+newbytes(int len)
+{
+ Bytes* ans;
+
+ ans = (Bytes*)emalloc(OFFSETOF(data[0], Bytes) + len);
+ ans->len = len;
+ return ans;
+}
+
+/*
+ * newbytes(len), with data initialized from buf
+ */
+static Bytes*
+makebytes(uchar* buf, int len)
+{
+ Bytes* ans;
+
+ ans = newbytes(len);
+ memmove(ans->data, buf, len);
+ return ans;
+}
+
+static void
+freebytes(Bytes* b)
+{
+ if(b != nil)
+ free(b);
+}
+
+/*
+ * Make a new Bytes, containing bytes of b1 followed by those of b2.
+ * Either b1 or b2 or both can be nil.
+ */
+static Bytes*
+catbytes(Bytes* b1, Bytes* b2)
+{
+ Bytes* ans;
+ int n;
+
+ if(b1 == nil) {
+ if(b2 == nil)
+ ans = newbytes(0);
+ else
+ ans = makebytes(b2->data, b2->len);
+ }
+ else if(b2 == nil) {
+ ans = makebytes(b1->data, b1->len);
+ }
+ else {
+ n = b1->len + b2->len;
+ ans = newbytes(n);
+ ans->len = n;
+ memmove(ans->data, b1->data, b1->len);
+ memmove(ans->data+b1->len, b2->data, b2->len);
+ }
+ return ans;
+}
+
+/* len is number of ints */
+static Ints*
+newints(int len)
+{
+ Ints* ans;
+
+ ans = (Ints*)emalloc(OFFSETOF(data[0], Ints) + len*sizeof(int));
+ ans->len = len;
+ return ans;
+}
+
+static Ints*
+makeints(int* buf, int len)
+{
+ Ints* ans;
+
+ ans = newints(len);
+ if(len > 0)
+ memmove(ans->data, buf, len*sizeof(int));
+ return ans;
+}
+
+static void
+freeints(Ints* b)
+{
+ if(b != nil)
+ free(b);
+}
+
+/* len is number of bytes */
+static Bits*
+newbits(int len)
+{
+ Bits* ans;
+
+ ans = (Bits*)emalloc(OFFSETOF(data[0], Bits) + len);
+ ans->len = len;
+ ans->unusedbits = 0;
+ return ans;
+}
+
+static Bits*
+makebits(uchar* buf, int len, int unusedbits)
+{
+ Bits* ans;
+
+ ans = newbits(len);
+ memmove(ans->data, buf, len);
+ ans->unusedbits = unusedbits;
+ return ans;
+}
+
+static void
+freebits(Bits* b)
+{
+ if(b != nil)
+ free(b);
+}
+
+static Elist*
+mkel(Elem e, Elist* tail)
+{
+ Elist* el;
+
+ el = (Elist*)emalloc(sizeof(Elist));
+ el->hd = e;
+ el->tl = tail;
+ return el;
+}
+
+static int
+elistlen(Elist* el)
+{
+ int ans = 0;
+ while(el != nil) {
+ ans++;
+ el = el->tl;
+ }
+ return ans;
+}
+
+/* Frees elist, but not fields inside values of constituent elems */
+static void
+freeelist(Elist* el)
+{
+ Elist* next;
+
+ while(el != nil) {
+ next = el->tl;
+ free(el);
+ el = next;
+ }
+}
+
+/* free any allocated structures inside v (recursively freeing Elists) */
+static void
+freevalfields(Value* v)
+{
+ Elist* el;
+ Elist* l;
+ if(v == nil)
+ return;
+ switch(v->tag) {
+ case VOctets:
+ freebytes(v->u.octetsval);
+ break;
+ case VBigInt:
+ freebytes(v->u.bigintval);
+ break;
+ case VReal:
+ freebytes(v->u.realval);
+ break;
+ case VOther:
+ freebytes(v->u.otherval);
+ break;
+ case VBitString:
+ freebits(v->u.bitstringval);
+ break;
+ case VObjId:
+ freeints(v->u.objidval);
+ break;
+ case VString:
+ if (v->u.stringval)
+ free(v->u.stringval);
+ break;
+ case VSeq:
+ el = v->u.seqval;
+ for(l = el; l != nil; l = l->tl)
+ freevalfields(&l->hd.val);
+ if (el)
+ freeelist(el);
+ break;
+ case VSet:
+ el = v->u.setval;
+ for(l = el; l != nil; l = l->tl)
+ freevalfields(&l->hd.val);
+ if (el)
+ freeelist(el);
+ break;
+ }
+}
+
+/* end of general ASN1 functions */
+
+
+
+
+
+/*=============================================================*/
+/*
+ * Decode and parse an X.509 Certificate, defined by this ASN1:
+ * Certificate ::= SEQUENCE {
+ * certificateInfo CertificateInfo,
+ * signatureAlgorithm AlgorithmIdentifier,
+ * signature BIT STRING }
+ *
+ * CertificateInfo ::= SEQUENCE {
+ * version [0] INTEGER DEFAULT v1 (0),
+ * serialNumber INTEGER,
+ * signature AlgorithmIdentifier,
+ * issuer Name,
+ * validity Validity,
+ * subject Name,
+ * subjectPublicKeyInfo SubjectPublicKeyInfo }
+ * (version v2 has two more fields, optional unique identifiers for
+ * issuer and subject; since we ignore these anyway, we won't parse them)
+ *
+ * Validity ::= SEQUENCE {
+ * notBefore UTCTime,
+ * notAfter UTCTime }
+ *
+ * SubjectPublicKeyInfo ::= SEQUENCE {
+ * algorithm AlgorithmIdentifier,
+ * subjectPublicKey BIT STRING }
+ *
+ * AlgorithmIdentifier ::= SEQUENCE {
+ * algorithm OBJECT IDENTIFER,
+ * parameters ANY DEFINED BY ALGORITHM OPTIONAL }
+ *
+ * Name ::= SEQUENCE OF RelativeDistinguishedName
+ *
+ * RelativeDistinguishedName ::= SETOF SIZE(1..MAX) OF AttributeTypeAndValue
+ *
+ * AttributeTypeAndValue ::= SEQUENCE {
+ * type OBJECT IDENTIFER,
+ * value DirectoryString }
+ * (selected attributes have these Object Ids:
+ * commonName {2 5 4 3}
+ * countryName {2 5 4 6}
+ * localityName {2 5 4 7}
+ * stateOrProvinceName {2 5 4 8}
+ * organizationName {2 5 4 10}
+ * organizationalUnitName {2 5 4 11}
+ * )
+ *
+ * DirectoryString ::= CHOICE {
+ * teletexString TeletexString,
+ * printableString PrintableString,
+ * universalString UniversalString }
+ *
+ * See rfc1423, rfc2437 for AlgorithmIdentifier, subjectPublicKeyInfo, signature.
+ *
+ * Not yet implemented:
+ * CertificateRevocationList ::= SIGNED SEQUENCE{
+ * signature AlgorithmIdentifier,
+ * issuer Name,
+ * lastUpdate UTCTime,
+ * nextUpdate UTCTime,
+ * revokedCertificates
+ * SEQUENCE OF CRLEntry OPTIONAL}
+ * CRLEntry ::= SEQUENCE{
+ * userCertificate SerialNumber,
+ * revocationDate UTCTime}
+ */
+
+typedef struct CertX509 {
+ int serial;
+ char* issuer;
+ char* validity_start;
+ char* validity_end;
+ char* subject;
+ int publickey_alg;
+ Bytes* publickey;
+ int signature_alg;
+ Bytes* signature;
+} CertX509;
+
+/* Algorithm object-ids */
+enum {
+ ALG_rsaEncryption,
+ ALG_md2WithRSAEncryption,
+ ALG_md4WithRSAEncryption,
+ ALG_md5WithRSAEncryption,
+ ALG_sha1WithRSAEncryption,
+ ALG_md5,
+ NUMALGS
+};
+typedef struct Ints7 {
+ int len;
+ int data[7];
+} Ints7;
+static Ints7 oid_rsaEncryption = {7, 1, 2, 840, 113549, 1, 1, 1 };
+static Ints7 oid_md2WithRSAEncryption = {7, 1, 2, 840, 113549, 1, 1, 2 };
+static Ints7 oid_md4WithRSAEncryption = {7, 1, 2, 840, 113549, 1, 1, 3 };
+static Ints7 oid_md5WithRSAEncryption = {7, 1, 2, 840, 113549, 1, 1, 4 };
+static Ints7 oid_sha1WithRSAEncryption ={7, 1, 2, 840, 113549, 1, 1, 5 };
+static Ints7 oid_md5 ={6, 1, 2, 840, 113549, 2, 5, 0 };
+static Ints *alg_oid_tab[NUMALGS+1] = {
+ (Ints*)&oid_rsaEncryption,
+ (Ints*)&oid_md2WithRSAEncryption,
+ (Ints*)&oid_md4WithRSAEncryption,
+ (Ints*)&oid_md5WithRSAEncryption,
+ (Ints*)&oid_sha1WithRSAEncryption,
+ (Ints*)&oid_md5,
+ nil
+};
+static DigestFun digestalg[NUMALGS+1] = { md5, md5, md5, md5, sha1, md5, nil };
+
+static void
+freecert(CertX509* c)
+{
+ if (!c) return;
+ if(c->issuer != nil)
+ free(c->issuer);
+ if(c->validity_start != nil)
+ free(c->validity_start);
+ if(c->validity_end != nil)
+ free(c->validity_end);
+ if(c->subject != nil)
+ free(c->subject);
+ freebytes(c->publickey);
+ freebytes(c->signature);
+}
+
+/*
+ * Parse the Name ASN1 type.
+ * The sequence of RelativeDistinguishedName's gives a sort of pathname,
+ * from most general to most specific. Each element of the path can be
+ * one or more (but usually just one) attribute-value pair, such as
+ * countryName="US".
+ * We'll just form a "postal-style" address string by concatenating the elements
+ * from most specific to least specific, separated by commas.
+ * Return name-as-string (which must be freed by caller).
+ */
+static char*
+parse_name(Elem* e)
+{
+ Elist* el;
+ Elem* es;
+ Elist* esetl;
+ Elem* eat;
+ Elist* eatl;
+ char* s;
+ enum { MAXPARTS = 100 };
+ char* parts[MAXPARTS];
+ int i;
+ int plen;
+ char* ans = nil;
+
+ if(!is_seq(e, &el))
+ goto errret;
+ i = 0;
+ plen = 0;
+ while(el != nil) {
+ es = &el->hd;
+ if(!is_set(es, &esetl))
+ goto errret;
+ while(esetl != nil) {
+ eat = &esetl->hd;
+ if(!is_seq(eat, &eatl) || elistlen(eatl) != 2)
+ goto errret;
+ if(!is_string(&eatl->tl->hd, &s) || i>=MAXPARTS)
+ goto errret;
+ parts[i++] = s;
+ plen += strlen(s) + 2; /* room for ", " after */
+ esetl = esetl->tl;
+ }
+ el = el->tl;
+ }
+ if(i > 0) {
+ ans = (char*)emalloc(plen);
+ *ans = '\0';
+ while(--i >= 0) {
+ s = parts[i];
+ strcat(ans, s);
+ if(i > 0)
+ strcat(ans, ", ");
+ }
+ }
+
+errret:
+ return ans;
+}
+
+/*
+ * Parse an AlgorithmIdentifer ASN1 type.
+ * Look up the oid in oid_tab and return one of OID_rsaEncryption, etc..,
+ * or -1 if not found.
+ * For now, ignore parameters, since none of our algorithms need them.
+ */
+static int
+parse_alg(Elem* e)
+{
+ Elist* el;
+ Ints* oid;
+
+ if(!is_seq(e, &el) || el == nil || !is_oid(&el->hd, &oid))
+ return -1;
+ return oid_lookup(oid, alg_oid_tab);
+}
+
+static CertX509*
+decode_cert(Bytes* a)
+{
+ int ok = 0;
+ int n;
+ CertX509* c = nil;
+ Elem ecert;
+ Elem* ecertinfo;
+ Elem* esigalg;
+ Elem* esig;
+ Elem* eserial;
+ Elem* eissuer;
+ Elem* evalidity;
+ Elem* esubj;
+ Elem* epubkey;
+ Elist* el;
+ Elist* elcert = nil;
+ Elist* elcertinfo = nil;
+ Elist* elvalidity = nil;
+ Elist* elpubkey = nil;
+ Bits* bits = nil;
+ Bytes* b;
+ Elem* e;
+
+ if(decode(a->data, a->len, &ecert) != ASN_OK)
+ goto errret;
+
+ c = (CertX509*)emalloc(sizeof(CertX509));
+ c->serial = -1;
+ c->issuer = nil;
+ c->validity_start = nil;
+ c->validity_end = nil;
+ c->subject = nil;
+ c->publickey_alg = -1;
+ c->publickey = nil;
+ c->signature_alg = -1;
+ c->signature = nil;
+
+ /* Certificate */
+ if(!is_seq(&ecert, &elcert) || elistlen(elcert) !=3)
+ goto errret;
+ ecertinfo = &elcert->hd;
+ el = elcert->tl;
+ esigalg = &el->hd;
+ c->signature_alg = parse_alg(esigalg);
+ el = el->tl;
+ esig = &el->hd;
+
+ /* Certificate Info */
+ if(!is_seq(ecertinfo, &elcertinfo))
+ goto errret;
+ n = elistlen(elcertinfo);
+ if(n < 6)
+ goto errret;
+ eserial =&elcertinfo->hd;
+ el = elcertinfo->tl;
+ /* check for optional version, marked by explicit context tag 0 */
+ if(eserial->tag.class == Context && eserial->tag.num == 0) {
+ eserial = &el->hd;
+ if(n < 7)
+ goto errret;
+ el = el->tl;
+ }
+
+ if(parse_alg(&el->hd) != c->signature_alg)
+ goto errret;
+ el = el->tl;
+ eissuer = &el->hd;
+ el = el->tl;
+ evalidity = &el->hd;
+ el = el->tl;
+ esubj = &el->hd;
+ el = el->tl;
+ epubkey = &el->hd;
+ if(!is_int(eserial, &c->serial)) {
+ if(!is_bigint(eserial, &b))
+ goto errret;
+ c->serial = -1; /* else we have to change cert struct */
+ }
+ c->issuer = parse_name(eissuer);
+ if(c->issuer == nil)
+ goto errret;
+ /* Validity */
+ if(!is_seq(evalidity, &elvalidity))
+ goto errret;
+ if(elistlen(elvalidity) != 2)
+ goto errret;
+ e = &elvalidity->hd;
+ if(!is_time(e, &c->validity_start))
+ goto errret;
+ e->val.u.stringval = nil; /* string ownership transfer */
+ e = &elvalidity->tl->hd;
+ if(!is_time(e, &c->validity_end))
+ goto errret;
+ e->val.u.stringval = nil; /* string ownership transfer */
+
+ /* resume CertificateInfo */
+ c->subject = parse_name(esubj);
+ if(c->subject == nil)
+ goto errret;
+
+ /* SubjectPublicKeyInfo */
+ if(!is_seq(epubkey, &elpubkey))
+ goto errret;
+ if(elistlen(elpubkey) != 2)
+ goto errret;
+
+ c->publickey_alg = parse_alg(&elpubkey->hd);
+ if(c->publickey_alg < 0)
+ goto errret;
+ if(!is_bitstring(&elpubkey->tl->hd, &bits))
+ goto errret;
+ if(bits->unusedbits != 0)
+ goto errret;
+ c->publickey = makebytes(bits->data, bits->len);
+
+ /*resume Certificate */
+ if(c->signature_alg < 0)
+ goto errret;
+ if(!is_bitstring(esig, &bits))
+ goto errret;
+ c->signature = makebytes(bits->data, bits->len);
+ ok = 1;
+
+errret:
+ freevalfields(&ecert.val); /* recurses through lists, too */
+ if(!ok){
+ freecert(c);
+ c = nil;
+ }
+ return c;
+}
+
+/*
+ * RSAPublickKey :: SEQUENCE {
+ * modulus INTEGER,
+ * publicExponent INTEGER
+ * }
+ */
+static RSApub*
+decode_rsapubkey(Bytes* a)
+{
+ Elem e;
+ Elist *el;
+ mpint *mp;
+ RSApub* key;
+
+ key = rsapuballoc();
+ if(decode(a->data, a->len, &e) != ASN_OK)
+ goto errret;
+ if(!is_seq(&e, &el) || elistlen(el) != 2)
+ goto errret;
+
+ key->n = mp = asn1mpint(&el->hd);
+ if(mp == nil)
+ goto errret;
+
+ el = el->tl;
+ key->ek = mp = asn1mpint(&el->hd);
+ if(mp == nil)
+ goto errret;
+ return key;
+errret:
+ rsapubfree(key);
+ return nil;
+}
+
+/*
+ * RSAPrivateKey ::= SEQUENCE {
+ * version Version,
+ * modulus INTEGER, -- n
+ * publicExponent INTEGER, -- e
+ * privateExponent INTEGER, -- d
+ * prime1 INTEGER, -- p
+ * prime2 INTEGER, -- q
+ * exponent1 INTEGER, -- d mod (p-1)
+ * exponent2 INTEGER, -- d mod (q-1)
+ * coefficient INTEGER -- (inverse of q) mod p }
+ */
+static RSApriv*
+decode_rsaprivkey(Bytes* a)
+{
+ int version;
+ Elem e;
+ Elist *el;
+ mpint *mp;
+ RSApriv* key;
+
+ key = rsaprivalloc();
+ if(decode(a->data, a->len, &e) != ASN_OK)
+ goto errret;
+ if(!is_seq(&e, &el) || elistlen(el) != 9)
+ goto errret;
+ if(!is_int(&el->hd, &version) || version != 0)
+ goto errret;
+
+ el = el->tl;
+ key->pub.n = mp = asn1mpint(&el->hd);
+ if(mp == nil)
+ goto errret;
+
+ el = el->tl;
+ key->pub.ek = mp = asn1mpint(&el->hd);
+ if(mp == nil)
+ goto errret;
+
+ el = el->tl;
+ key->dk = mp = asn1mpint(&el->hd);
+ if(mp == nil)
+ goto errret;
+
+ el = el->tl;
+ key->q = mp = asn1mpint(&el->hd);
+ if(mp == nil)
+ goto errret;
+
+ el = el->tl;
+ key->p = mp = asn1mpint(&el->hd);
+ if(mp == nil)
+ goto errret;
+
+ el = el->tl;
+ key->kq = mp = asn1mpint(&el->hd);
+ if(mp == nil)
+ goto errret;
+
+ el = el->tl;
+ key->kp = mp = asn1mpint(&el->hd);
+ if(mp == nil)
+ goto errret;
+
+ el = el->tl;
+ key->c2 = mp = asn1mpint(&el->hd);
+ if(mp == nil)
+ goto errret;
+
+ return key;
+errret:
+ rsaprivfree(key);
+ return nil;
+}
+
+static mpint*
+asn1mpint(Elem *e)
+{
+ Bytes *b;
+ mpint *mp;
+ int v;
+
+ if(is_int(e, &v))
+ return itomp(v, nil);
+ if(is_bigint(e, &b)) {
+ mp = betomp(b->data, b->len, nil);
+ freebytes(b);
+ return mp;
+ }
+ return nil;
+}
+
+static mpint*
+pkcs1pad(Bytes *b, mpint *modulus)
+{
+ int n = (mpsignif(modulus)+7)/8;
+ int pm1, i;
+ uchar *p;
+ mpint *mp;
+
+ pm1 = n - 1 - b->len;
+ p = (uchar*)emalloc(n);
+ p[0] = 0;
+ p[1] = 1;
+ for(i = 2; i < pm1; i++)
+ p[i] = 0xFF;
+ p[pm1] = 0;
+ memcpy(&p[pm1+1], b->data, b->len);
+ mp = betomp(p, n, nil);
+ free(p);
+ return mp;
+}
+
+RSApriv*
+asn1toRSApriv(uchar *kd, int kn)
+{
+ Bytes *b;
+ RSApriv *key;
+
+ b = makebytes(kd, kn);
+ key = decode_rsaprivkey(b);
+ freebytes(b);
+ return key;
+}
+
+/*
+ * digest(CertificateInfo)
+ * Our ASN.1 library doesn't return pointers into the original
+ * data array, so we need to do a little hand decoding.
+ */
+static void
+digest_certinfo(Bytes *cert, DigestFun digestfun, uchar *digest)
+{
+ uchar *info, *p, *pend;
+ ulong infolen;
+ int isconstr, length;
+ Tag tag;
+ Elem elem;
+
+ p = cert->data;
+ pend = cert->data + cert->len;
+ if(tag_decode(&p, pend, &tag, &isconstr) != ASN_OK ||
+ tag.class != Universal || tag.num != SEQUENCE ||
+ length_decode(&p, pend, &length) != ASN_OK ||
+ p+length > pend ||
+ p+length < p)
+ return;
+ info = p;
+ if(ber_decode(&p, pend, &elem) != ASN_OK || elem.tag.num != SEQUENCE)
+ return;
+ infolen = p - info;
+ (*digestfun)(info, infolen, digest, nil);
+}
+
+static char*
+verify_signature(Bytes* signature, RSApub *pk, uchar *edigest, Elem **psigalg)
+{
+ Elem e;
+ Elist *el;
+ Bytes *digest;
+ uchar *pkcs1buf, *buf;
+ int buflen;
+ mpint *pkcs1;
+ int nlen;
+
+ /* one less than the byte length of the modulus */
+ nlen = (mpsignif(pk->n)-1)/8;
+
+ /* see 9.2.1 of rfc2437 */
+ pkcs1 = betomp(signature->data, signature->len, nil);
+ mpexp(pkcs1, pk->ek, pk->n, pkcs1);
+ pkcs1buf = nil;
+ buflen = mptobe(pkcs1, nil, 0, &pkcs1buf);
+ buf = pkcs1buf;
+ if(buflen != nlen || buf[0] != 1)
+ return "expected 1";
+ buf++;
+ while(buf[0] == 0xff)
+ buf++;
+ if(buf[0] != 0)
+ return "expected 0";
+ buf++;
+ buflen -= buf-pkcs1buf;
+ if(decode(buf, buflen, &e) != ASN_OK || !is_seq(&e, &el) || elistlen(el) != 2 ||
+ !is_octetstring(&el->tl->hd, &digest))
+ return "signature parse error";
+ *psigalg = &el->hd;
+ if(memcmp(digest->data, edigest, digest->len) == 0)
+ return nil;
+ return "digests did not match";
+}
+
+RSApub*
+X509toRSApub(uchar *cert, int ncert, char *name, int nname)
+{
+ char *e;
+ Bytes *b;
+ CertX509 *c;
+ RSApub *pk;
+
+ b = makebytes(cert, ncert);
+ c = decode_cert(b);
+ freebytes(b);
+ if(c == nil)
+ return nil;
+ if(name != nil && c->subject != nil){
+ e = strchr(c->subject, ',');
+ if(e != nil)
+ *e = 0; // take just CN part of Distinguished Name
+ strncpy(name, c->subject, nname);
+ }
+ pk = decode_rsapubkey(c->publickey);
+ freecert(c);
+ return pk;
+}
+
+char*
+X509verify(uchar *cert, int ncert, RSApub *pk)
+{
+ char *e;
+ Bytes *b;
+ CertX509 *c;
+ uchar digest[SHA1dlen];
+ Elem *sigalg;
+
+ b = makebytes(cert, ncert);
+ c = decode_cert(b);
+ if(c != nil)
+ digest_certinfo(b, digestalg[c->signature_alg], digest);
+ freebytes(b);
+ if(c == nil)
+ return "cannot decode cert";
+ e = verify_signature(c->signature, pk, digest, &sigalg);
+ freecert(c);
+ return e;
+}
+
+/* ------- Elem constructors ---------- */
+static Elem
+Null(void)
+{
+ Elem e;
+
+ e.tag.class = Universal;
+ e.tag.num = NULLTAG;
+ e.val.tag = VNull;
+ return e;
+}
+
+static Elem
+mkint(int j)
+{
+ Elem e;
+
+ e.tag.class = Universal;
+ e.tag.num = INTEGER;
+ e.val.tag = VInt;
+ e.val.u.intval = j;
+ return e;
+}
+
+static Elem
+mkbigint(mpint *p)
+{
+ Elem e;
+ uchar *buf;
+ int buflen;
+
+ e.tag.class = Universal;
+ e.tag.num = INTEGER;
+ e.val.tag = VBigInt;
+ buflen = mptobe(p, nil, 0, &buf);
+ e.val.u.bigintval = makebytes(buf, buflen);
+ free(buf);
+ return e;
+}
+
+static Elem
+mkstring(char *s)
+{
+ Elem e;
+
+ e.tag.class = Universal;
+ e.tag.num = IA5String;
+ e.val.tag = VString;
+ e.val.u.stringval = estrdup(s);
+ return e;
+}
+
+static Elem
+mkoctet(uchar *buf, int buflen)
+{
+ Elem e;
+
+ e.tag.class = Universal;
+ e.tag.num = OCTET_STRING;
+ e.val.tag = VOctets;
+ e.val.u.octetsval = makebytes(buf, buflen);
+ return e;
+}
+
+static Elem
+mkbits(uchar *buf, int buflen)
+{
+ Elem e;
+
+ e.tag.class = Universal;
+ e.tag.num = BIT_STRING;
+ e.val.tag = VBitString;
+ e.val.u.bitstringval = makebits(buf, buflen, 0);
+ return e;
+}
+
+static Elem
+mkutc(long t)
+{
+ Elem e;
+ char utc[50];
+ Tm *tm = gmtime(t);
+
+ e.tag.class = Universal;
+ e.tag.num = UTCTime;
+ e.val.tag = VString;
+ snprint(utc, 50, "%.2d%.2d%.2d%.2d%.2d%.2dZ",
+ tm->year % 100, tm->mon+1, tm->mday, tm->hour, tm->min, tm->sec);
+ e.val.u.stringval = estrdup(utc);
+ return e;
+}
+
+static Elem
+mkoid(Ints *oid)
+{
+ Elem e;
+
+ e.tag.class = Universal;
+ e.tag.num = OBJECT_ID;
+ e.val.tag = VObjId;
+ e.val.u.objidval = makeints(oid->data, oid->len);
+ return e;
+}
+
+static Elem
+mkseq(Elist *el)
+{
+ Elem e;
+
+ e.tag.class = Universal;
+ e.tag.num = SEQUENCE;
+ e.val.tag = VSeq;
+ e.val.u.seqval = el;
+ return e;
+}
+
+static Elem
+mkset(Elist *el)
+{
+ Elem e;
+
+ e.tag.class = Universal;
+ e.tag.num = SETOF;
+ e.val.tag = VSet;
+ e.val.u.setval = el;
+ return e;
+}
+
+static Elem
+mkalg(int alg)
+{
+ return mkseq(mkel(mkoid(alg_oid_tab[alg]), mkel(Null(), nil)));
+}
+
+typedef struct Ints7pref {
+ int len;
+ int data[7];
+ char prefix[4];
+} Ints7pref;
+Ints7pref DN_oid[] = {
+ {4, 2, 5, 4, 6, 0, 0, 0, "C="},
+ {4, 2, 5, 4, 8, 0, 0, 0, "ST="},
+ {4, 2, 5, 4, 7, 0, 0, 0, "L="},
+ {4, 2, 5, 4, 10, 0, 0, 0, "O="},
+ {4, 2, 5, 4, 11, 0, 0, 0, "OU="},
+ {4, 2, 5, 4, 3, 0, 0, 0, "CN="},
+ {7, 1,2,840,113549,1,9,1, "E="},
+};
+
+static Elem
+mkname(Ints7pref *oid, char *subj)
+{
+ return mkset(mkel(mkseq(mkel(mkoid((Ints*)oid), mkel(mkstring(subj), nil))), nil));
+}
+
+static Elem
+mkDN(char *dn)
+{
+ int i, j, nf;
+ char *f[20], *prefix, *d2 = estrdup(dn);
+ Elist* el = nil;
+
+ nf = tokenize(d2, f, nelem(f));
+ for(i=nf-1; i>=0; i--){
+ for(j=0; j<nelem(DN_oid); j++){
+ prefix = DN_oid[j].prefix;
+ if(strncmp(f[i],prefix,strlen(prefix))==0){
+ el = mkel(mkname(&DN_oid[j],f[i]+strlen(prefix)), el);
+ break;
+ }
+ }
+ }
+ free(d2);
+ return mkseq(el);
+}
+
+
+uchar*
+X509gen(RSApriv *priv, char *subj, ulong valid[2], int *certlen)
+{
+ int serial = 0;
+ uchar *cert = nil;
+ RSApub *pk = rsaprivtopub(priv);
+ Bytes *certbytes, *pkbytes, *certinfobytes, *sigbytes;
+ Elem e, certinfo, issuer, subject, pubkey, validity, sig;
+ uchar digest[MD5dlen], *buf;
+ int buflen;
+ mpint *pkcs1;
+
+ e.val.tag = VInt; /* so freevalfields at errret is no-op */
+ issuer = mkDN(subj);
+ subject = mkDN(subj);
+ pubkey = mkseq(mkel(mkbigint(pk->n),mkel(mkint(mptoi(pk->ek)),nil)));
+ if(encode(pubkey, &pkbytes) != ASN_OK)
+ goto errret;
+ freevalfields(&pubkey.val);
+ pubkey = mkseq(
+ mkel(mkalg(ALG_rsaEncryption),
+ mkel(mkbits(pkbytes->data, pkbytes->len),
+ nil)));
+ freebytes(pkbytes);
+ validity = mkseq(
+ mkel(mkutc(valid[0]),
+ mkel(mkutc(valid[1]),
+ nil)));
+ certinfo = mkseq(
+ mkel(mkint(serial),
+ mkel(mkalg(ALG_md5WithRSAEncryption),
+ mkel(issuer,
+ mkel(validity,
+ mkel(subject,
+ mkel(pubkey,
+ nil)))))));
+ if(encode(certinfo, &certinfobytes) != ASN_OK)
+ goto errret;
+ md5(certinfobytes->data, certinfobytes->len, digest, 0);
+ freebytes(certinfobytes);
+ sig = mkseq(
+ mkel(mkalg(ALG_md5),
+ mkel(mkoctet(digest, MD5dlen),
+ nil)));
+ if(encode(sig, &sigbytes) != ASN_OK)
+ goto errret;
+ pkcs1 = pkcs1pad(sigbytes, pk->n);
+ freebytes(sigbytes);
+ rsadecrypt(priv, pkcs1, pkcs1);
+ buflen = mptobe(pkcs1, nil, 0, &buf);
+ mpfree(pkcs1);
+ e = mkseq(
+ mkel(certinfo,
+ mkel(mkalg(ALG_md5WithRSAEncryption),
+ mkel(mkbits(buf, buflen),
+ nil))));
+ free(buf);
+ if(encode(e, &certbytes) != ASN_OK)
+ goto errret;
+ if(certlen)
+ *certlen = certbytes->len;
+ cert = certbytes->data;
+errret:
+ freevalfields(&e.val);
+ return cert;
+}
+
+uchar*
+X509req(RSApriv *priv, char *subj, int *certlen)
+{
+ /* RFC 2314, PKCS #10 Certification Request Syntax */
+ int version = 0;
+ uchar *cert = nil;
+ RSApub *pk = rsaprivtopub(priv);
+ Bytes *certbytes, *pkbytes, *certinfobytes, *sigbytes;
+ Elem e, certinfo, subject, pubkey, sig;
+ uchar digest[MD5dlen], *buf;
+ int buflen;
+ mpint *pkcs1;
+
+ e.val.tag = VInt; /* so freevalfields at errret is no-op */
+ subject = mkDN(subj);
+ pubkey = mkseq(mkel(mkbigint(pk->n),mkel(mkint(mptoi(pk->ek)),nil)));
+ if(encode(pubkey, &pkbytes) != ASN_OK)
+ goto errret;
+ freevalfields(&pubkey.val);
+ pubkey = mkseq(
+ mkel(mkalg(ALG_rsaEncryption),
+ mkel(mkbits(pkbytes->data, pkbytes->len),
+ nil)));
+ freebytes(pkbytes);
+ certinfo = mkseq(
+ mkel(mkint(version),
+ mkel(subject,
+ mkel(pubkey,
+ nil))));
+ if(encode(certinfo, &certinfobytes) != ASN_OK)
+ goto errret;
+ md5(certinfobytes->data, certinfobytes->len, digest, 0);
+ freebytes(certinfobytes);
+ sig = mkseq(
+ mkel(mkalg(ALG_md5),
+ mkel(mkoctet(digest, MD5dlen),
+ nil)));
+ if(encode(sig, &sigbytes) != ASN_OK)
+ goto errret;
+ pkcs1 = pkcs1pad(sigbytes, pk->n);
+ freebytes(sigbytes);
+ rsadecrypt(priv, pkcs1, pkcs1);
+ buflen = mptobe(pkcs1, nil, 0, &buf);
+ mpfree(pkcs1);
+ e = mkseq(
+ mkel(certinfo,
+ mkel(mkalg(ALG_md5),
+ mkel(mkbits(buf, buflen),
+ nil))));
+ free(buf);
+ if(encode(e, &certbytes) != ASN_OK)
+ goto errret;
+ if(certlen)
+ *certlen = certbytes->len;
+ cert = certbytes->data;
+errret:
+ freevalfields(&e.val);
+ return cert;
+}
+
+static char*
+tagdump(Tag tag)
+{
+ if(tag.class != Universal)
+ return smprint("class%d,num%d", tag.class, tag.num);
+ switch(tag.num){
+ case BOOLEAN: return "BOOLEAN"; break;
+ case INTEGER: return "INTEGER"; break;
+ case BIT_STRING: return "BIT STRING"; break;
+ case OCTET_STRING: return "OCTET STRING"; break;
+ case NULLTAG: return "NULLTAG"; break;
+ case OBJECT_ID: return "OID"; break;
+ case ObjectDescriptor: return "OBJECT_DES"; break;
+ case EXTERNAL: return "EXTERNAL"; break;
+ case REAL: return "REAL"; break;
+ case ENUMERATED: return "ENUMERATED"; break;
+ case EMBEDDED_PDV: return "EMBEDDED PDV"; break;
+ case SEQUENCE: return "SEQUENCE"; break;
+ case SETOF: return "SETOF"; break;
+ case NumericString: return "NumericString"; break;
+ case PrintableString: return "PrintableString"; break;
+ case TeletexString: return "TeletexString"; break;
+ case VideotexString: return "VideotexString"; break;
+ case IA5String: return "IA5String"; break;
+ case UTCTime: return "UTCTime"; break;
+ case GeneralizedTime: return "GeneralizedTime"; break;
+ case GraphicString: return "GraphicString"; break;
+ case VisibleString: return "VisibleString"; break;
+ case GeneralString: return "GeneralString"; break;
+ case UniversalString: return "UniversalString"; break;
+ case BMPString: return "BMPString"; break;
+ default:
+ return smprint("Universal,num%d", tag.num);
+ }
+}
+
+static void
+edump(Elem e)
+{
+ Value v;
+ Elist *el;
+ int i;
+
+ print("%s{", tagdump(e.tag));
+ v = e.val;
+ switch(v.tag){
+ case VBool: print("Bool %d",v.u.boolval); break;
+ case VInt: print("Int %d",v.u.intval); break;
+ case VOctets: print("Octets[%d] %.2x%.2x...",v.u.octetsval->len,v.u.octetsval->data[0],v.u.octetsval->data[1]); break;
+ case VBigInt: print("BigInt[%d] %.2x%.2x...",v.u.bigintval->len,v.u.bigintval->data[0],v.u.bigintval->data[1]); break;
+ case VReal: print("Real..."); break;
+ case VOther: print("Other..."); break;
+ case VBitString: print("BitString..."); break;
+ case VNull: print("Null"); break;
+ case VEOC: print("EOC..."); break;
+ case VObjId: print("ObjId");
+ for(i = 0; i<v.u.objidval->len; i++)
+ print(" %d", v.u.objidval->data[i]);
+ break;
+ case VString: print("String \"%s\"",v.u.stringval); break;
+ case VSeq: print("Seq\n");
+ for(el = v.u.seqval; el!=nil; el = el->tl)
+ edump(el->hd);
+ break;
+ case VSet: print("Set\n");
+ for(el = v.u.setval; el!=nil; el = el->tl)
+ edump(el->hd);
+ break;
+ }
+ print("}\n");
+}
+
+void
+asn1dump(uchar *der, int len)
+{
+ Elem e;
+
+ if(decode(der, len, &e) != ASN_OK){
+ print("didn't parse\n");
+ exits("didn't parse");
+ }
+ edump(e);
+}
+
+void
+X509dump(uchar *cert, int ncert)
+{
+ char *e;
+ Bytes *b;
+ CertX509 *c;
+ RSApub *pk;
+ uchar digest[SHA1dlen];
+ Elem *sigalg;
+
+ print("begin X509dump\n");
+ b = makebytes(cert, ncert);
+ c = decode_cert(b);
+ if(c != nil)
+ digest_certinfo(b, digestalg[c->signature_alg], digest);
+ freebytes(b);
+ if(c == nil){
+ print("cannot decode cert");
+ return;
+ }
+
+ print("serial %d\n", c->serial);
+ print("issuer %s\n", c->issuer);
+ print("validity %s %s\n", c->validity_start, c->validity_end);
+ print("subject %s\n", c->subject);
+ pk = decode_rsapubkey(c->publickey);
+ print("pubkey e=%B n(%d)=%B\n", pk->ek, mpsignif(pk->n), pk->n);
+
+ print("sigalg=%d digest=%.*H\n", c->signature_alg, MD5dlen, digest);
+ e = verify_signature(c->signature, pk, digest, &sigalg);
+ if(e==nil){
+ e = "nil (meaning ok)";
+ print("sigalg=\n");
+ if(sigalg)
+ edump(*sigalg);
+ }
+ print("self-signed verify_signature returns: %s\n", e);
+
+ rsapubfree(pk);
+ freecert(c);
+ print("end X509dump\n");
+}
