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| <tr><td width=20><td><b>RC4(3)</b><td align=right><b>RC4(3)</b> |
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| <p><font size=+1><b>NAME </b></font><br> |
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| setupRC4state, rc4, rc4skip, rc4back - alleged rc4 encryption<br> |
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| <p><font size=+1><b>SYNOPSIS </b></font><br> |
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| <tt><font size=+1>#include <u.h><br> |
| #include <libc.h><br> |
| #include <mp.h><br> |
| #include <libsec.h> |
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| <tt><font size=+1>void setupRC4state(RC4state *s, uchar *seed, int slen) |
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| </font></tt> |
| <tt><font size=+1>void rc4(RC4state *s, uchar *data, int dlen) |
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| </font></tt> |
| <tt><font size=+1>void rc4skip(RC4state *s, int nbytes) |
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| </font></tt> |
| <tt><font size=+1>void rc4back(RC4state *s, int nbytes)<br> |
| </font></tt> |
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| <p><font size=+1><b>DESCRIPTION </b></font><br> |
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| This is an algorithm alleged to be Rivest’s RC4 encryption function. |
| It is a pseudo-random number generator with a 256 byte state and |
| a long cycle. The input buffer is XOR’d with the output of the |
| generator both to encrypt and to decrypt. The seed, entered using |
| <i>setupRC4state</i>, can be any length. The generator can |
| be run forward using <i>rc4</i>, skip over bytes using <i>rc4skip</i> to account |
| lost transmissions, or run backwards using <i>rc4back</i> to cover retransmitted |
| data. The <i>RC4state</i> structure keeps track of the algorithm.<br> |
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| <p><font size=+1><b>SOURCE </b></font><br> |
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| <tt><font size=+1>/usr/local/plan9/src/libsec<br> |
| </font></tt> |
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| <p><font size=+1><b>SEE ALSO </b></font><br> |
| |
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| <a href="../man3/mp.html"><i>mp</i>(3)</a>, <a href="../man3/aes.html"><i>aes</i>(3)</a>, <a href="../man3/blowfish.html"><i>blowfish</i>(3)</a>, <a href="../man3/des.html"><i>des</i>(3)</a>, <a href="../man3/dsa.html"><i>dsa</i>(3)</a>, <a href="../man3/elgamal.html"><i>elgamal</i>(3)</a>, <a href="../man3/rsa.html"><i>rsa</i>(3)</a>, |
| <a href="../man3/sechash.html"><i>sechash</i>(3)</a>, <a href="../man3/prime.html"><i>prime</i>(3)</a>, <a href="../man3/rand.html"><i>rand</i>(3)</a><br> |
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