void des3_encrypt_pubkey(unsigned char *key,
unsigned char *blk, int len) {
DESContext ourkeys[3];
des_key_setup(GET_32BIT_MSB_FIRST(key),
GET_32BIT_MSB_FIRST(key+4), &ourkeys[0]);
des_key_setup(GET_32BIT_MSB_FIRST(key+8),
GET_32BIT_MSB_FIRST(key+12), &ourkeys[1]);
des_key_setup(GET_32BIT_MSB_FIRST(key),
GET_32BIT_MSB_FIRST(key+4), &ourkeys[2]);
des_3cbc_encrypt(blk, blk, len, ourkeys);
}
void cipher_encrypt(CipherContext * context, unsigned char *dest, const unsigned char *src, unsigned int len)
{
switch (context->type) {
case SSH_CIPHER_NONE:
memcpy(dest, src, len);
break;
#ifdef WITH_IDEA
case SSH_CIPHER_IDEA:
idea_cfb_encrypt(&context->u.idea.key, context->u.idea.iv, dest, src, len);
break;
#endif /* WITH_IDEA */
#ifdef WITH_DES
case SSH_CIPHER_DES:
des_cbc_encrypt(&context->u.des.key, context->u.des.iv, dest, src, len);
break;
#endif /* WITH_DES */
case SSH_CIPHER_3DES:
des_3cbc_encrypt(&context->u.des3.key1, context->u.des3.iv1, &context->u.des3.key2, context->u.des3.iv2, &context->u.des3.key3, context->u.des3.iv3, dest, src, len);
break;
#ifdef WITH_ARCFOUR
case SSH_CIPHER_ARCFOUR:
arcfour_encrypt(&context->u.arcfour, dest, src, len);
break;
#endif /* WITH_ARCFOUR */
#ifdef WITH_BLOWFISH
case SSH_CIPHER_BLOWFISH:
blowfish_cbc_encrypt(&context->u.blowfish, dest, src, len);
break;
#endif /* WITH_BLOWFISH */
default:
fatal("cipher_encrypt: unknown cipher: %d", context->type);
}
}
static void des3_encrypt_blk(unsigned char *blk, int len) {
des_3cbc_encrypt(blk, blk, len, cskeys);
}