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/*
* Copyright (C) 2000, 2004, 2005 Free Software Foundation
*
* Author: Nikos Mavroyanopoulos
*
* This file is part of GNUTLS.
*
* The GNUTLS library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* as published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
* USA
*
*/
#include <gnutls_int.h>
#include <gnutls_errors.h>
#include <gnutls_cipher_int.h>
#include <gnutls_datum.h>
cipher_hd_t _gnutls_cipher_init(gnutls_cipher_algorithm_t cipher,
const gnutls_datum_t * key,
const gnutls_datum_t * iv)
{
cipher_hd_t ret = NULL;
int err = GC_INVALID_CIPHER; /* doesn't matter */
switch (cipher) {
case GNUTLS_CIPHER_AES_128_CBC:
err = gc_cipher_open(GC_AES128, GC_CBC, &ret);
break;
case GNUTLS_CIPHER_AES_256_CBC:
err = gc_cipher_open(GC_AES256, GC_CBC, &ret);
break;
case GNUTLS_CIPHER_3DES_CBC:
err = gc_cipher_open(GC_3DES, GC_CBC, &ret);
break;
case GNUTLS_CIPHER_DES_CBC:
err = gc_cipher_open(GC_DES, GC_CBC, &ret);
break;
case GNUTLS_CIPHER_ARCFOUR_128:
err = gc_cipher_open(GC_ARCFOUR128, GC_STREAM, &ret);
break;
case GNUTLS_CIPHER_ARCFOUR_40:
err = gc_cipher_open(GC_ARCFOUR40, GC_STREAM, &ret);
break;
case GNUTLS_CIPHER_RC2_40_CBC:
err = gc_cipher_open(GC_ARCTWO40, GC_CBC, &ret);
break;
default:
return NULL;
}
if (err == 0) {
gc_cipher_setkey(ret, key->size, key->data);
if (iv->data != NULL && iv->size > 0)
gc_cipher_setiv(ret, iv->size, iv->data);
} else if (cipher != GNUTLS_CIPHER_NULL) {
gnutls_assert();
_gnutls_x509_log("Crypto cipher[%d] error: %d\n", cipher, err);
/* FIXME: gc_strerror */
}
return ret;
}
int _gnutls_cipher_encrypt(cipher_hd_t handle, void *text, int textlen)
{
if (handle != GNUTLS_CIPHER_FAILED) {
if (gc_cipher_encrypt_inline(handle, textlen, text) != 0) {
gnutls_assert();
return GNUTLS_E_INTERNAL_ERROR;
}
}
return 0;
}
int _gnutls_cipher_decrypt(cipher_hd_t handle, void *ciphertext,
int ciphertextlen)
{
if (handle != GNUTLS_CIPHER_FAILED) {
if (gc_cipher_decrypt_inline(handle, ciphertextlen, ciphertext) !=
0) {
gnutls_assert();
return GNUTLS_E_INTERNAL_ERROR;
}
}
return 0;
}
void _gnutls_cipher_deinit(cipher_hd_t handle)
{
if (handle != GNUTLS_CIPHER_FAILED) {
gc_cipher_close(handle);
}
}
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