1/* crypto/aes/aes.h */
2/* ====================================================================
3 * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
7 * are met:
8 *
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
11 *
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in
14 * the documentation and/or other materials provided with the
15 * distribution.
16 *
17 * 3. All advertising materials mentioning features or use of this
18 * software must display the following acknowledgment:
19 * "This product includes software developed by the OpenSSL Project
20 * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
21 *
22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
23 * endorse or promote products derived from this software without
24 * prior written permission. For written permission, please contact
25 * [email protected].
26 *
27 * 5. Products derived from this software may not be called "OpenSSL"
28 * nor may "OpenSSL" appear in their names without prior written
29 * permission of the OpenSSL Project.
30 *
31 * 6. Redistributions of any form whatsoever must retain the following
32 * acknowledgment:
33 * "This product includes software developed by the OpenSSL Project
34 * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
35 *
36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
47 * OF THE POSSIBILITY OF SUCH DAMAGE.
48 * ====================================================================
49 *
50 */
51
52#ifndef HEADER_AES_H
53# define HEADER_AES_H
54
55# include <openssl/opensslconf.h>
56
57# ifdef OPENSSL_NO_AES
58# error AES is disabled.
59# endif
60
61# include <stddef.h>
62
63# define AES_ENCRYPT 1
64# define AES_DECRYPT 0
65
66/*
67 * Because array size can't be a const in C, the following two are macros.
68 * Both sizes are in bytes.
69 */
70# define AES_MAXNR 14
71# define AES_BLOCK_SIZE 16
72
73#ifdef __cplusplus
74extern "C" {
75#endif
76
77/* This should be a hidden type, but EVP requires that the size be known */
78struct aes_key_st {
79# ifdef AES_LONG
80 unsigned long rd_key[4 * (AES_MAXNR + 1)];
81# else
82 unsigned int rd_key[4 * (AES_MAXNR + 1)];
83# endif
84 int rounds;
85};
86typedef struct aes_key_st AES_KEY;
87
88const char *AES_options(void);
89
90int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
91 AES_KEY *key);
92int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
93 AES_KEY *key);
94
95int private_AES_set_encrypt_key(const unsigned char *userKey, const int bits,
96 AES_KEY *key);
97int private_AES_set_decrypt_key(const unsigned char *userKey, const int bits,
98 AES_KEY *key);
99
100void AES_encrypt(const unsigned char *in, unsigned char *out,
101 const AES_KEY *key);
102void AES_decrypt(const unsigned char *in, unsigned char *out,
103 const AES_KEY *key);
104
105void AES_ecb_encrypt(const unsigned char *in, unsigned char *out,
106 const AES_KEY *key, const int enc);
107void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
108 size_t length, const AES_KEY *key,
109 unsigned char *ivec, const int enc);
110void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out,
111 size_t length, const AES_KEY *key,
112 unsigned char *ivec, int *num, const int enc);
113void AES_cfb1_encrypt(const unsigned char *in, unsigned char *out,
114 size_t length, const AES_KEY *key,
115 unsigned char *ivec, int *num, const int enc);
116void AES_cfb8_encrypt(const unsigned char *in, unsigned char *out,
117 size_t length, const AES_KEY *key,
118 unsigned char *ivec, int *num, const int enc);
119void AES_ofb128_encrypt(const unsigned char *in, unsigned char *out,
120 size_t length, const AES_KEY *key,
121 unsigned char *ivec, int *num);
122void AES_ctr128_encrypt(const unsigned char *in, unsigned char *out,
123 size_t length, const AES_KEY *key,
124 unsigned char ivec[AES_BLOCK_SIZE],
125 unsigned char ecount_buf[AES_BLOCK_SIZE],
126 unsigned int *num);
127/* NB: the IV is _two_ blocks long */
128void AES_ige_encrypt(const unsigned char *in, unsigned char *out,
129 size_t length, const AES_KEY *key,
130 unsigned char *ivec, const int enc);
131/* NB: the IV is _four_ blocks long */
132void AES_bi_ige_encrypt(const unsigned char *in, unsigned char *out,
133 size_t length, const AES_KEY *key,
134 const AES_KEY *key2, const unsigned char *ivec,
135 const int enc);
136
137int AES_wrap_key(AES_KEY *key, const unsigned char *iv,
138 unsigned char *out,
139 const unsigned char *in, unsigned int inlen);
140int AES_unwrap_key(AES_KEY *key, const unsigned char *iv,
141 unsigned char *out,
142 const unsigned char *in, unsigned int inlen);
143
144
145#ifdef __cplusplus
146}
147#endif
148
149#endif /* !HEADER_AES_H */
150