1/*	$OpenBSD: aes.h,v 1.4 2020/07/22 13:54:30 tobhe Exp $	*/
2/*
3 * Copyright (c) 2016 Thomas Pornin <pornin@bolet.org>
4 * Copyright (c) 2016 Mike Belopuhov
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining
7 * a copy of this software and associated documentation files (the
8 * "Software"), to deal in the Software without restriction, including
9 * without limitation the rights to use, copy, modify, merge, publish,
10 * distribute, sublicense, and/or sell copies of the Software, and to
11 * permit persons to whom the Software is furnished to do so, subject to
12 * the following conditions:
13 *
14 * The above copyright notice and this permission notice shall be
15 * included in all copies or substantial portions of the Software.
16 *
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
18 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
19 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
20 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
21 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
22 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
23 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
24 * SOFTWARE.
25 */
26
27#ifndef _AES_H_
28#define _AES_H_
29
30#ifndef AES_MAXROUNDS
31#define AES_MAXROUNDS	(14)
32#endif
33
34typedef struct aes_ctx {
35	uint32_t sk[60];
36	uint32_t sk_exp[120];
37
38	unsigned num_rounds;
39} AES_CTX;
40
41int	AES_Setkey(AES_CTX *, const uint8_t *, int);
42void	AES_Encrypt(AES_CTX *, const uint8_t *, uint8_t *);
43void	AES_Decrypt(AES_CTX *, const uint8_t *, uint8_t *);
44void	AES_Encrypt_ECB(AES_CTX *, const uint8_t *, uint8_t *, size_t);
45void	AES_Decrypt_ECB(AES_CTX *, const uint8_t *, uint8_t *, size_t);
46
47int	AES_KeySetup_Encrypt(uint32_t *, const uint8_t *, int);
48int	AES_KeySetup_Decrypt(uint32_t *, const uint8_t *, int);
49
50#endif	/* _AES_H_ */
51