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 {
        BFstate state;
};

static CipherState*
initblowfish(Conn *c, int dir)
{
        int i;
        CipherState *cs;

        if (debug > 1) {
                fprint(2, "initblowfish dir:%d\ns2cek: ", dir);
                for(i = 0; i < 16; ++i)
                        fprint(2, "%02x", c->s2cek[i]);
                fprint(2, "\nc2sek: ");
                for(i = 0; i < 16; ++i)
                        fprint(2, "%02x", c->c2sek[i]);
                fprint(2, "\ns2civ: ");
                for(i = 0; i < 8; ++i)
                        fprint(2, "%02x", c->s2civ[i]);
                fprint(2, "\nc2siv: ");
                for(i = 0; i < 8; ++i)
                        fprint(2, "%02x", c->c2siv[i]);
                fprint(2, "\n");
        }
        cs = emalloc9p(sizeof(CipherState));
        memset(cs, '\0', sizeof *cs);
        fprint(2, "cs: %p\n", cs);
        if(dir)
                setupBFstate(&cs->state, c->s2cek, 16, c->s2civ);
        else
                setupBFstate(&cs->state, c->c2sek, 16, c->c2siv);
        return cs;
}

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

static void
decryptblowfish(CipherState *cs, uchar *buf, int nbuf)
{
fprint(2, "cs: %p, nb:%d\n", cs, nbuf);
fprint(2, "before decrypt: %02ux %02ux %02ux %02ux\n", buf[0], buf[1], buf[2], buf[3]);
        bfCBCdecrypt(buf, nbuf, &cs->state);
fprint(2, "after decrypt: %02ux %02ux %02ux %02ux\n", buf[0], buf[1], buf[2], buf[3]);
}

Cipher cipherblowfish = {
        "blowfish-cbc",
        8,
        initblowfish,
        encryptblowfish,
        decryptblowfish,
};