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/*
* Copyright (C) 2000, 2004, 2005 Free Software Foundation
*
* Author: Nikos Mavrogiannopoulos
*
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,
* USA
*
*/
#include <gnutls_int.h>
#include <gnutls_errors.h>
#include <gnutls_cipher_int.h>
#include <gnutls_datum.h>
cipher_hd_t
MHD_gtls_cipher_init (enum MHD_GNUTLS_CipherAlgorithm cipher,
const MHD_gnutls_datum_t * key,
const MHD_gnutls_datum_t * iv)
{
cipher_hd_t ret = NULL;
int err = GC_INVALID_CIPHER; /* doesn't matter */
switch (cipher)
{
case MHD_GNUTLS_CIPHER_AES_128_CBC:
err = MHD_gc_cipher_open (GC_AES128, GC_CBC, &ret);
break;
case MHD_GNUTLS_CIPHER_AES_256_CBC:
err = MHD_gc_cipher_open (GC_AES256, GC_CBC, &ret);
break;
case MHD_GNUTLS_CIPHER_3DES_CBC:
err = MHD_gc_cipher_open (GC_3DES, GC_CBC, &ret);
break;
case MHD_GNUTLS_CIPHER_DES_CBC:
err = MHD_gc_cipher_open (GC_DES, GC_CBC, &ret);
break;
case MHD_GNUTLS_CIPHER_ARCFOUR_128:
err = MHD_gc_cipher_open (GC_ARCFOUR128, GC_STREAM, &ret);
break;
case MHD_GNUTLS_CIPHER_ARCFOUR_40:
err = MHD_gc_cipher_open (GC_ARCFOUR40, GC_STREAM, &ret);
break;
case MHD_GNUTLS_CIPHER_RC2_40_CBC:
err = MHD_gc_cipher_open (GC_ARCTWO40, GC_CBC, &ret);
break;
default:
return NULL;
}
if (err == 0)
{
MHD_gc_cipher_setkey (ret, key->size, (const char *) key->data);
if (iv->data != NULL && iv->size > 0)
MHD_gc_cipher_setiv (ret, iv->size, (const char *) iv->data);
}
else if (cipher != MHD_GNUTLS_CIPHER_NULL)
{
MHD_gnutls_assert ();
MHD__gnutls_x509_log ("Crypto cipher[%d] error: %d\n", cipher, err);
/* FIXME: MHD_gc_strerror */
}
return ret;
}
int
MHD_gtls_cipher_encrypt (cipher_hd_t handle, void *text, int textlen)
{
if (handle != GNUTLS_CIPHER_FAILED)
{
if (MHD_gc_cipher_encrypt_inline (handle, textlen, text) != 0)
{
MHD_gnutls_assert ();
return GNUTLS_E_INTERNAL_ERROR;
}
}
return 0;
}
int
MHD_gtls_cipher_decrypt (cipher_hd_t handle, void *ciphertext,
int ciphertextlen)
{
if (handle != GNUTLS_CIPHER_FAILED)
{
if (MHD_gc_cipher_decrypt_inline (handle, ciphertextlen, ciphertext) !=
0)
{
MHD_gnutls_assert ();
return GNUTLS_E_INTERNAL_ERROR;
}
}
return 0;
}
void
MHD_gnutls_cipher_deinit (cipher_hd_t handle)
{
if (handle != GNUTLS_CIPHER_FAILED)
{
MHD_gc_cipher_close (handle);
}
}
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