Subversion Repositories planix.SVN

#include <u.h>
#include <libc.h>
#include <mp.h>
#include <fcall.h>
#include <thread.h>
#include <9p.h>
#include <libsec.h>
#include "netssh.h"

struct CipherState {
        DES3state state;
};

static CipherState*
init3des(Conn *c, int dir)
{
        CipherState *cs;
        uchar key[3][8];

        cs = emalloc9p(sizeof(CipherState));
        if(dir){
                memmove(key, c->s2cek, sizeof key);
                setupDES3state(&cs->state, key, c->s2civ);
        } else {
                memmove(key, c->c2sek, sizeof key);
                setupDES3state(&cs->state, key, c->c2siv);
        }
        return cs;
}

static void
encrypt3des(CipherState *cs, uchar *buf, int nbuf)
{
        des3CBCencrypt(buf, nbuf, &cs->state);
}

static void
decrypt3des(CipherState *cs, uchar *buf, int nbuf)
{
        des3CBCdecrypt(buf, nbuf, &cs->state);
}

Cipher cipher3des = {
        "3des-cbc",
        8,
        init3des,
        encrypt3des,
        decrypt3des,
};