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/* aes-encrypt.c
*
* Encryption function for the aes/rijndael block cipher.
*/
/* nettle, low-level cryptographics library
*
* Copyright (C) 2002, 2013 Niels Möller
*
* The nettle 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.
*
* The nettle 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 the nettle library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
* MA 02111-1301, USA.
*/
#if HAVE_CONFIG_H
# include "config.h"
#endif
#include <assert.h>
#include "aes-internal.h"
/* The main point on this function is to help the assembler
implementations of _nettle_aes_encrypt to get the table pointer.
For PIC code, the details can be complex and system dependent. */
void
aes_encrypt(const struct aes_ctx *ctx,
size_t length, uint8_t *dst,
const uint8_t *src)
{
assert(!(length % AES_BLOCK_SIZE) );
_aes_encrypt(ctx->rounds, ctx->keys, &_aes_encrypt_table,
length, dst, src);
}
void
aes128_encrypt(const struct aes128_ctx *ctx,
size_t length, uint8_t *dst,
const uint8_t *src)
{
assert(!(length % AES_BLOCK_SIZE) );
_aes_encrypt(_AES128_ROUNDS, ctx->keys, &_aes_encrypt_table,
length, dst, src);
}
void
aes192_encrypt(const struct aes192_ctx *ctx,
size_t length, uint8_t *dst,
const uint8_t *src)
{
assert(!(length % AES_BLOCK_SIZE) );
_aes_encrypt(_AES192_ROUNDS, ctx->keys, &_aes_encrypt_table,
length, dst, src);
}
void
aes256_encrypt(const struct aes256_ctx *ctx,
size_t length, uint8_t *dst,
const uint8_t *src)
{
assert(!(length % AES_BLOCK_SIZE) );
_aes_encrypt(_AES256_ROUNDS, ctx->keys, &_aes_encrypt_table,
length, dst, src);
}
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