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| 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 | + |
| 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 |
| 74 | +extern "C" { |
| 75 | +#endif |
| 76 | + |
| 77 | +/* This should be a hidden type, but EVP requires that the size be known */ |
| 78 | +struct 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 | +}; |
| 86 | +typedef struct aes_key_st AES_KEY; |
| 87 | + |
| 88 | +const char *AES_options(void); |
| 89 | + |
| 90 | +int AES_set_encrypt_key(const unsigned char *userKey, const int bits, |
| 91 | + AES_KEY *key); |
| 92 | +int AES_set_decrypt_key(const unsigned char *userKey, const int bits, |
| 93 | + AES_KEY *key); |
| 94 | + |
| 95 | +int private_AES_set_encrypt_key(const unsigned char *userKey, const int bits, |
| 96 | + AES_KEY *key); |
| 97 | +int private_AES_set_decrypt_key(const unsigned char *userKey, const int bits, |
| 98 | + AES_KEY *key); |
| 99 | + |
| 100 | +void AES_encrypt(const unsigned char *in, unsigned char *out, |
| 101 | + const AES_KEY *key); |
| 102 | +void AES_decrypt(const unsigned char *in, unsigned char *out, |
| 103 | + const AES_KEY *key); |
| 104 | + |
| 105 | +void AES_ecb_encrypt(const unsigned char *in, unsigned char *out, |
| 106 | + const AES_KEY *key, const int enc); |
| 107 | +void 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); |
| 110 | +void 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); |
| 113 | +void 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); |
| 116 | +void 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); |
| 119 | +void AES_ofb128_encrypt(const unsigned char *in, unsigned char *out, |
| 120 | + size_t length, const AES_KEY *key, |
| 121 | + unsigned char *ivec, int *num); |
| 122 | +void 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 */ |
| 128 | +void 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 */ |
| 132 | +void 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 | + |
| 137 | +int AES_wrap_key(AES_KEY *key, const unsigned char *iv, |
| 138 | + unsigned char *out, |
| 139 | + const unsigned char *in, unsigned int inlen); |
| 140 | +int 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 */ |
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