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65 lines
2.0 KiB
C
65 lines
2.0 KiB
C
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/* libanode: the Anode C reference implementation
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* Copyright (C) 2009 Adam Ierymenko <adam.ierymenko@gmail.com>
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#ifndef _ANODE_AES_H
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#define _ANODE_AES_H
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#include <openssl/aes.h>
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#include "types.h"
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/* This just glues us to OpenSSL's built-in AES-256 implementation */
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#define ANODE_AES_BLOCK_SIZE 16
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#define ANODE_AES_KEY_SIZE 32
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typedef AES_KEY AnodeAesExpandedKey;
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#define Anode_aes256_expand_key(k,ek) AES_set_encrypt_key((const unsigned char *)(k),256,(AES_KEY *)(ek))
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/* Note: in and out can be the same thing */
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#define Anode_aes256_encrypt(ek,in,out) AES_encrypt((const unsigned char *)(in),(unsigned char *)(out),(const AES_KEY *)(ek))
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/* Note: iv is modified */
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static inline void Anode_aes256_cfb_encrypt(
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const AnodeAesExpandedKey *expkey,
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const unsigned char *in,
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unsigned char *out,
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unsigned char *iv,
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unsigned long len)
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{
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int tmp = 0;
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AES_cfb128_encrypt(in,out,len,(const AES_KEY *)expkey,iv,&tmp,AES_ENCRYPT);
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}
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static inline void Anode_aes256_cfb_decrypt(
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const AnodeAesExpandedKey *expkey,
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const unsigned char *in,
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unsigned char *out,
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unsigned char *iv,
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unsigned long len)
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{
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int tmp = 0;
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AES_cfb128_encrypt(in,out,len,(const AES_KEY *)expkey,iv,&tmp,AES_DECRYPT);
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}
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/* CMAC message authentication code */
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void Anode_cmac_aes256(
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const AnodeAesExpandedKey *expkey,
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const unsigned char *restrict data,
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unsigned long data_len,
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unsigned char *restrict mac);
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#endif
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