new files
diff --git a/include/libsec.h b/include/libsec.h
new file mode 100644
index 0000000..17b2b65
--- /dev/null
+++ b/include/libsec.h
@@ -0,0 +1,340 @@
+/*
+#pragma lib "libsec.a"
+#pragma src "/sys/src/libsec"
+*/
+
+#ifndef _MPINT
+typedef struct mpint mpint;
+#endif
+
+/////////////////////////////////////////////////////////
+// AES definitions
+/////////////////////////////////////////////////////////
+
+enum
+{
+ AESbsize= 16,
+ AESmaxkey= 32,
+ AESmaxrounds= 14
+};
+
+typedef struct AESstate AESstate;
+struct AESstate
+{
+ ulong setup;
+ int rounds;
+ int keybytes;
+ uchar key[AESmaxkey]; /* unexpanded key */
+ u32int ekey[4*(AESmaxrounds + 1)]; /* encryption key */
+ u32int dkey[4*(AESmaxrounds + 1)]; /* decryption key */
+ uchar ivec[AESbsize]; /* initialization vector */
+};
+
+void setupAESstate(AESstate *s, uchar key[], int keybytes, uchar *ivec);
+void aesCBCencrypt(uchar *p, int len, AESstate *s);
+void aesCBCdecrypt(uchar *p, int len, AESstate *s);
+
+/////////////////////////////////////////////////////////
+// Blowfish Definitions
+/////////////////////////////////////////////////////////
+
+enum
+{
+ BFbsize = 8,
+ BFrounds = 16
+};
+
+// 16-round Blowfish
+typedef struct BFstate BFstate;
+struct BFstate
+{
+ ulong setup;
+
+ uchar key[56];
+ uchar ivec[8];
+
+ u32int pbox[BFrounds+2];
+ u32int sbox[1024];
+};
+
+void setupBFstate(BFstate *s, uchar key[], int keybytes, uchar *ivec);
+void bfCBCencrypt(uchar*, int, BFstate*);
+void bfCBCdecrypt(uchar*, int, BFstate*);
+void bfECBencrypt(uchar*, int, BFstate*);
+void bfECBdecrypt(uchar*, int, BFstate*);
+
+/////////////////////////////////////////////////////////
+// DES definitions
+/////////////////////////////////////////////////////////
+
+enum
+{
+ DESbsize= 8
+};
+
+// single des
+typedef struct DESstate DESstate;
+struct DESstate
+{
+ ulong setup;
+ uchar key[8]; /* unexpanded key */
+ ulong expanded[32]; /* expanded key */
+ uchar ivec[8]; /* initialization vector */
+};
+
+void setupDESstate(DESstate *s, uchar key[8], uchar *ivec);
+void des_key_setup(uchar[8], ulong[32]);
+void block_cipher(ulong*, uchar*, int);
+void desCBCencrypt(uchar*, int, DESstate*);
+void desCBCdecrypt(uchar*, int, DESstate*);
+void desECBencrypt(uchar*, int, DESstate*);
+void desECBdecrypt(uchar*, int, DESstate*);
+
+// for backward compatibility with 7 byte DES key format
+void des56to64(uchar *k56, uchar *k64);
+void des64to56(uchar *k64, uchar *k56);
+void key_setup(uchar[7], ulong[32]);
+
+// triple des encrypt/decrypt orderings
+enum {
+ DES3E= 0,
+ DES3D= 1,
+ DES3EEE= 0,
+ DES3EDE= 2,
+ DES3DED= 5,
+ DES3DDD= 7
+};
+
+typedef struct DES3state DES3state;
+struct DES3state
+{
+ ulong setup;
+ uchar key[3][8]; /* unexpanded key */
+ ulong expanded[3][32]; /* expanded key */
+ uchar ivec[8]; /* initialization vector */
+};
+
+void setupDES3state(DES3state *s, uchar key[3][8], uchar *ivec);
+void triple_block_cipher(ulong keys[3][32], uchar*, int);
+void des3CBCencrypt(uchar*, int, DES3state*);
+void des3CBCdecrypt(uchar*, int, DES3state*);
+void des3ECBencrypt(uchar*, int, DES3state*);
+void des3ECBdecrypt(uchar*, int, DES3state*);
+
+/////////////////////////////////////////////////////////
+// digests
+/////////////////////////////////////////////////////////
+
+enum
+{
+ SHA1dlen= 20, /* SHA digest length */
+ MD4dlen= 16, /* MD4 digest length */
+ MD5dlen= 16 /* MD5 digest length */
+};
+
+typedef struct DigestState DigestState;
+struct DigestState
+{
+ ulong len;
+ u32int state[5];
+ uchar buf[128];
+ int blen;
+ char malloced;
+ char seeded;
+};
+typedef struct DigestState SHAstate; /* obsolete name */
+typedef struct DigestState SHA1state;
+typedef struct DigestState MD5state;
+typedef struct DigestState MD4state;
+
+DigestState* md4(uchar*, ulong, uchar*, DigestState*);
+DigestState* md5(uchar*, ulong, uchar*, DigestState*);
+DigestState* sha1(uchar*, ulong, uchar*, DigestState*);
+DigestState* hmac_md5(uchar*, ulong, uchar*, ulong, uchar*, DigestState*);
+DigestState* hmac_sha1(uchar*, ulong, uchar*, ulong, uchar*, DigestState*);
+char* sha1pickle(SHA1state*);
+SHA1state* sha1unpickle(char*);
+
+/////////////////////////////////////////////////////////
+// random number generation
+/////////////////////////////////////////////////////////
+void genrandom(uchar *buf, int nbytes);
+void prng(uchar *buf, int nbytes);
+ulong fastrand(void);
+ulong nfastrand(ulong);
+
+/////////////////////////////////////////////////////////
+// primes
+/////////////////////////////////////////////////////////
+void genprime(mpint *p, int n, int accuracy); // generate an n bit probable prime
+void gensafeprime(mpint *p, mpint *alpha, int n, int accuracy); // prime and generator
+void genstrongprime(mpint *p, int n, int accuracy); // generate an n bit strong prime
+void DSAprimes(mpint *q, mpint *p, uchar seed[SHA1dlen]);
+int probably_prime(mpint *n, int nrep); // miller-rabin test
+int smallprimetest(mpint *p); // returns -1 if not prime, 0 otherwise
+
+/////////////////////////////////////////////////////////
+// rc4
+/////////////////////////////////////////////////////////
+typedef struct RC4state RC4state;
+struct RC4state
+{
+ uchar state[256];
+ uchar x;
+ uchar y;
+};
+
+void setupRC4state(RC4state*, uchar*, int);
+void rc4(RC4state*, uchar*, int);
+void rc4skip(RC4state*, int);
+void rc4back(RC4state*, int);
+
+/////////////////////////////////////////////////////////
+// rsa
+/////////////////////////////////////////////////////////
+typedef struct RSApub RSApub;
+typedef struct RSApriv RSApriv;
+
+// public/encryption key
+struct RSApub
+{
+ mpint *n; // modulus
+ mpint *ek; // exp (encryption key)
+};
+
+// private/decryption key
+struct RSApriv
+{
+ RSApub pub;
+
+ mpint *dk; // exp (decryption key)
+
+ // precomputed values to help with chinese remainder theorem calc
+ mpint *p;
+ mpint *q;
+ mpint *kp; // dk mod p-1
+ mpint *kq; // dk mod q-1
+ mpint *c2; // (inv p) mod q
+};
+
+RSApriv* rsagen(int nlen, int elen, int rounds);
+mpint* rsaencrypt(RSApub *k, mpint *in, mpint *out);
+mpint* rsadecrypt(RSApriv *k, mpint *in, mpint *out);
+RSApub* rsapuballoc(void);
+void rsapubfree(RSApub*);
+RSApriv* rsaprivalloc(void);
+void rsaprivfree(RSApriv*);
+RSApub* rsaprivtopub(RSApriv*);
+RSApub* X509toRSApub(uchar*, int, char*, int);
+RSApriv* asn1toRSApriv(uchar*, int);
+uchar* decodepem(char *s, char *type, int *len);
+uchar* X509gen(RSApriv *priv, char *subj, ulong valid[2], int *certlen);
+
+/////////////////////////////////////////////////////////
+// elgamal
+/////////////////////////////////////////////////////////
+typedef struct EGpub EGpub;
+typedef struct EGpriv EGpriv;
+typedef struct EGsig EGsig;
+
+// public/encryption key
+struct EGpub
+{
+ mpint *p; // modulus
+ mpint *alpha; // generator
+ mpint *key; // (encryption key) alpha**secret mod p
+};
+
+// private/decryption key
+struct EGpriv
+{
+ EGpub pub;
+ mpint *secret; // (decryption key)
+};
+
+// signature
+struct EGsig
+{
+ mpint *r, *s;
+};
+
+EGpriv* eggen(int nlen, int rounds);
+mpint* egencrypt(EGpub *k, mpint *in, mpint *out);
+mpint* egdecrypt(EGpriv *k, mpint *in, mpint *out);
+EGsig* egsign(EGpriv *k, mpint *m);
+int egverify(EGpub *k, EGsig *sig, mpint *m);
+EGpub* egpuballoc(void);
+void egpubfree(EGpub*);
+EGpriv* egprivalloc(void);
+void egprivfree(EGpriv*);
+EGsig* egsigalloc(void);
+void egsigfree(EGsig*);
+EGpub* egprivtopub(EGpriv*);
+
+/////////////////////////////////////////////////////////
+// dsa
+/////////////////////////////////////////////////////////
+typedef struct DSApub DSApub;
+typedef struct DSApriv DSApriv;
+typedef struct DSAsig DSAsig;
+
+// public/encryption key
+struct DSApub
+{
+ mpint *p; // modulus
+ mpint *q; // group order, q divides p-1
+ mpint *alpha; // group generator
+ mpint *key; // (encryption key) alpha**secret mod p
+};
+
+// private/decryption key
+struct DSApriv
+{
+ DSApub pub;
+ mpint *secret; // (decryption key)
+};
+
+// signature
+struct DSAsig
+{
+ mpint *r, *s;
+};
+
+DSApriv* dsagen(DSApub *opub);
+DSAsig* dsasign(DSApriv *k, mpint *m);
+int dsaverify(DSApub *k, DSAsig *sig, mpint *m);
+DSApub* dsapuballoc(void);
+void dsapubfree(DSApub*);
+DSApriv* dsaprivalloc(void);
+void dsaprivfree(DSApriv*);
+DSAsig* dsasigalloc(void);
+void dsasigfree(DSAsig*);
+DSApub* dsaprivtopub(DSApriv*);
+
+/////////////////////////////////////////////////////////
+// TLS
+/////////////////////////////////////////////////////////
+typedef struct Thumbprint{
+ struct Thumbprint *next;
+ uchar sha1[SHA1dlen];
+} Thumbprint;
+
+typedef struct TLSconn{
+ char dir[40]; // connection directory
+ uchar *cert; // certificate (local on input, remote on output)
+ uchar *sessionID;
+ int certlen, sessionIDlen;
+ int (*trace)(char*fmt, ...);
+} TLSconn;
+
+// tlshand.c
+extern int tlsClient(int fd, TLSconn *c);
+extern int tlsServer(int fd, TLSconn *c);
+
+// thumb.c
+extern Thumbprint* initThumbprints(char *ok, char *crl);
+extern void freeThumbprints(Thumbprint *ok);
+extern int okThumbprint(uchar *sha1, Thumbprint *ok);
+
+// readcert.c
+extern uchar *readcert(char *filename, int *pcertlen);
