3
* The aes/rijndael block cipher.
6
/* nettle, low-level cryptographics library
8
* Copyright (C) 2001 Niels M�ller
10
* The nettle library is free software; you can redistribute it and/or modify
11
* it under the terms of the GNU Lesser General Public License as published by
12
* the Free Software Foundation; either version 2.1 of the License, or (at your
13
* option) any later version.
15
* The nettle library is distributed in the hope that it will be useful, but
16
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
17
* or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public
18
* License for more details.
20
* You should have received a copy of the GNU Lesser General Public License
21
* along with the nettle library; see the file COPYING.LIB. If not, write to
22
* the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
26
#ifndef NETTLE_AES_INTERNAL_H_INCLUDED
27
#define NETTLE_AES_INTERNAL_H_INCLUDED
31
/* Define to use only small tables. */
37
# define AES_TABLE_SIZE 1
39
# define AES_TABLE_SIZE 4
43
#define _aes_crypt _nettle_aes_crypt
45
/* Assembler code using the table should get link errors if linked
46
* against a small table. */
48
# define _aes_encrypt_table _nettle_aes_encrypt_table_small
49
# define _aes_decrypt_table _nettle_aes_decrypt_table_small
51
# define _aes_encrypt_table _nettle_aes_encrypt_table
52
# define _aes_decrypt_table _nettle_aes_decrypt_table
60
/* Variant of the idx array suitable for the sparc
63
* sparc_idx[0][i] = idx[0][i] * 4 + 2
64
* sparc_idx[1][i] = idx[2][i] * 4
67
unsigned sparc_idx [2][4];
69
uint32_t table[AES_TABLE_SIZE][0x100];
73
_aes_crypt(const struct aes_ctx *ctx,
74
const struct aes_table *T,
75
unsigned length, uint8_t *dst,
79
#define ROTBYTE(x) (((x) >> 8) | (((x) & 0xff) << 24))
80
#define ROTRBYTE(x) (((x) << 8) | (((x) >> 24) & 0xff))
81
#define SUBBYTE(x, box) (((box)[((x) & 0xff)]) | \
82
((box)[(((x) >> 8) & 0xff)] << 8) | \
83
((box)[(((x) >> 16) & 0xff)] << 16) | \
84
((box)[(((x) >> 24) & 0xff)] << 24))
87
extern const struct aes_table _aes_encrypt_table;
88
extern const struct aes_table _aes_decrypt_table;
90
#define aes_sbox (_aes_encrypt_table.sbox)
92
#endif /* NETTLE_AES_INTERNAL_H_INCLUDED */