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/* libanode: the Anode C reference implementation
* Copyright (C) 2009 Adam Ierymenko <adam.ierymenko@gmail.com>
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef _ANODE_AES_H
#define _ANODE_AES_H
#include <openssl/aes.h>
#include "types.h"
/* This just glues us to OpenSSL's built-in AES-256 implementation */
#define ANODE_AES_BLOCK_SIZE 16
#define ANODE_AES_KEY_SIZE 32
typedef AES_KEY AnodeAesExpandedKey;
#define Anode_aes256_expand_key(k,ek) AES_set_encrypt_key((const unsigned char *)(k),256,(AES_KEY *)(ek))
/* Note: in and out can be the same thing */
#define Anode_aes256_encrypt(ek,in,out) AES_encrypt((const unsigned char *)(in),(unsigned char *)(out),(const AES_KEY *)(ek))
/* Note: iv is modified */
static inline void Anode_aes256_cfb_encrypt(
const AnodeAesExpandedKey *expkey,
const unsigned char *in,
unsigned char *out,
unsigned char *iv,
unsigned long len)
{
int tmp = 0;
AES_cfb128_encrypt(in,out,len,(const AES_KEY *)expkey,iv,&tmp,AES_ENCRYPT);
}
static inline void Anode_aes256_cfb_decrypt(
const AnodeAesExpandedKey *expkey,
const unsigned char *in,
unsigned char *out,
unsigned char *iv,
unsigned long len)
{
int tmp = 0;
AES_cfb128_encrypt(in,out,len,(const AES_KEY *)expkey,iv,&tmp,AES_DECRYPT);
}
/* CMAC message authentication code */
void Anode_cmac_aes256(
const AnodeAesExpandedKey *expkey,
const unsigned char *restrict data,
unsigned long data_len,
unsigned char *restrict mac);
#endif
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