1 /* crypto/aes/aes.h -*- mode:C; c-file-style: "eay" -*- */ 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 * openssl-core@openssl.org. 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 /* Because array size can't be a const in C, the following two are macros. 67 Both sizes are in bytes. */ 68 #define AES_MAXNR 14 69 #define AES_BLOCK_SIZE 16 70 71 #ifdef __cplusplus 72 extern "C" { 73 #endif 74 75 /* This should be a hidden type, but EVP requires that the size be known */ 76 struct aes_key_st { 77 #ifdef AES_LONG 78 unsigned long rd_key[4 *(AES_MAXNR + 1)]; 79 #else 80 unsigned int rd_key[4 *(AES_MAXNR + 1)]; 81 #endif 82 int rounds; 83 }; 84 typedef struct aes_key_st AES_KEY; 85 86 const char *AES_options(void); 87 88 int AES_set_encrypt_key(const unsigned char *userKey, const int bits, 89 AES_KEY *key); 90 int AES_set_decrypt_key(const unsigned char *userKey, const int bits, 91 AES_KEY *key); 92 93 int private_AES_set_encrypt_key(const unsigned char *userKey, const int bits, 94 AES_KEY *key); 95 int private_AES_set_decrypt_key(const unsigned char *userKey, const int bits, 96 AES_KEY *key); 97 98 void AES_encrypt(const unsigned char *in, unsigned char *out, 99 const AES_KEY *key); 100 void AES_decrypt(const unsigned char *in, unsigned char *out, 101 const AES_KEY *key); 102 103 void AES_ecb_encrypt(const unsigned char *in, unsigned char *out, 104 const AES_KEY *key, const int enc); 105 void AES_cbc_encrypt(const unsigned char *in, unsigned char *out, 106 size_t length, const AES_KEY *key, 107 unsigned char *ivec, const int enc); 108 void AES_cfb128_encrypt(const unsigned char *in, unsigned char *out, 109 size_t length, const AES_KEY *key, 110 unsigned char *ivec, int *num, const int enc); 111 void AES_cfb1_encrypt(const unsigned char *in, unsigned char *out, 112 size_t length, const AES_KEY *key, 113 unsigned char *ivec, int *num, const int enc); 114 void AES_cfb8_encrypt(const unsigned char *in, unsigned char *out, 115 size_t length, const AES_KEY *key, 116 unsigned char *ivec, int *num, const int enc); 117 void AES_ofb128_encrypt(const unsigned char *in, unsigned char *out, 118 size_t length, const AES_KEY *key, 119 unsigned char *ivec, int *num); 120 void AES_ctr128_encrypt(const unsigned char *in, unsigned char *out, 121 size_t length, const AES_KEY *key, 122 unsigned char ivec[AES_BLOCK_SIZE], 123 unsigned char ecount_buf[AES_BLOCK_SIZE], 124 unsigned int *num); 125 /* NB: the IV is _two_ blocks long */ 126 void AES_ige_encrypt(const unsigned char *in, unsigned char *out, 127 size_t length, const AES_KEY *key, 128 unsigned char *ivec, const int enc); 129 /* NB: the IV is _four_ blocks long */ 130 void AES_bi_ige_encrypt(const unsigned char *in, unsigned char *out, 131 size_t length, const AES_KEY *key, 132 const AES_KEY *key2, const unsigned char *ivec, 133 const int enc); 134 135 int AES_wrap_key(AES_KEY *key, const unsigned char *iv, 136 unsigned char *out, 137 const unsigned char *in, unsigned int inlen); 138 int AES_unwrap_key(AES_KEY *key, const unsigned char *iv, 139 unsigned char *out, 140 const unsigned char *in, unsigned int inlen); 141 142 143 #ifdef __cplusplus 144 } 145 #endif 146 147 #endif /* !HEADER_AES_H */ 148