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#include "ssh.h"
struct CipherState
{
RC4state enc;
RC4state dec;
};
static CipherState*
initrc4(Conn *c, int isserver)
{
CipherState *cs;
cs = emalloc(sizeof(CipherState));
if(isserver){
setupRC4state(&cs->enc, c->sesskey, 16);
setupRC4state(&cs->dec, c->sesskey+16, 16);
}else{
setupRC4state(&cs->dec, c->sesskey, 16);
setupRC4state(&cs->enc, c->sesskey+16, 16);
}
return cs;
}
static void
encryptrc4(CipherState *cs, uchar *buf, int nbuf)
{
rc4(&cs->enc, buf, nbuf);
}
static void
decryptrc4(CipherState *cs, uchar *buf, int nbuf)
{
rc4(&cs->dec, buf, nbuf);
}
Cipher cipherrc4 =
{
SSH_CIPHER_RC4,
"rc4",
initrc4,
encryptrc4,
decryptrc4,
};
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