1/*
2 * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
3 *
4 * Licensed under the Apache License 2.0 (the "License"). You may not use
5 * this file except in compliance with the License. You can obtain a copy
6 * in the file LICENSE in the source distribution or at
7 * https://www.openssl.org/source/license.html
8 */
9
10#ifndef OPENSSL_AES_H
11# define OPENSSL_AES_H
12# pragma once
13
14# include <openssl/macros.h>
15# ifndef OPENSSL_NO_DEPRECATED_3_0
16# define HEADER_AES_H
17# endif
18
19# include <openssl/opensslconf.h>
20
21# include <stddef.h>
22# ifdef __cplusplus
23extern "C" {
24# endif
25
26# define AES_ENCRYPT 1
27# define AES_DECRYPT 0
28
29/*
30 * Because array size can't be a const in C, the following two are macros.
31 * Both sizes are in bytes.
32 */
33# define AES_MAXNR 14
34# define AES_BLOCK_SIZE 16
35
36/* This should be a hidden type, but EVP requires that the size be known */
37struct aes_key_st {
38# ifdef AES_LONG
39 unsigned long rd_key[4 * (AES_MAXNR + 1)];
40# else
41 unsigned int rd_key[4 * (AES_MAXNR + 1)];
42# endif
43 int rounds;
44};
45typedef struct aes_key_st AES_KEY;
46
47const char *AES_options(void);
48
49int AES_set_encrypt_key(const unsigned char *userKey, const int bits,
50 AES_KEY *key);
51int AES_set_decrypt_key(const unsigned char *userKey, const int bits,
52 AES_KEY *key);
53
54void AES_encrypt(const unsigned char *in, unsigned char *out,
55 const AES_KEY *key);
56void AES_decrypt(const unsigned char *in, unsigned char *out,
57 const AES_KEY *key);
58
59void AES_ecb_encrypt(const unsigned char *in, unsigned char *out,
60 const AES_KEY *key, const int enc);
61void AES_cbc_encrypt(const unsigned char *in, unsigned char *out,
62 size_t length, const AES_KEY *key,
63 unsigned char *ivec, const int enc);
64void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out,
65 size_t length, const AES_KEY *key,
66 unsigned char *ivec, int *num, const int enc);
67void AES_cfb1_encrypt(const unsigned char *in, unsigned char *out,
68 size_t length, const AES_KEY *key,
69 unsigned char *ivec, int *num, const int enc);
70void AES_cfb8_encrypt(const unsigned char *in, unsigned char *out,
71 size_t length, const AES_KEY *key,
72 unsigned char *ivec, int *num, const int enc);
73void AES_ofb128_encrypt(const unsigned char *in, unsigned char *out,
74 size_t length, const AES_KEY *key,
75 unsigned char *ivec, int *num);
76
77/* NB: the IV is _two_ blocks long */
78DEPRECATEDIN_3_0(void
79 AES_ige_encrypt(const unsigned char *in, unsigned char *out,
80 size_t length, const AES_KEY *key,
81 unsigned char *ivec, const int enc))
82/* NB: the IV is _four_ blocks long */
83DEPRECATEDIN_3_0(void
84 AES_bi_ige_encrypt(const unsigned char *in, unsigned char *out,
85 size_t length, const AES_KEY *key,
86 const AES_KEY *key2,
87 const unsigned char *ivec, const int enc))
88
89int AES_wrap_key(AES_KEY *key, const unsigned char *iv,
90 unsigned char *out,
91 const unsigned char *in, unsigned int inlen);
92int AES_unwrap_key(AES_KEY *key, const unsigned char *iv,
93 unsigned char *out,
94 const unsigned char *in, unsigned int inlen);
95
96
97# ifdef __cplusplus
98}
99# endif
100
101#endif
102