| OLD | NEW |
| 1 /* | 1 /* |
| 2 * aes.h | 2 * aes.h |
| 3 * | 3 * |
| 4 * header file for the AES block cipher | 4 * header file for the AES block cipher |
| 5 * | 5 * |
| 6 * David A. McGrew | 6 * David A. McGrew |
| 7 * Cisco Systems, Inc. | 7 * Cisco Systems, Inc. |
| 8 */ | 8 */ |
| 9 | 9 |
| 10 /* | 10 /* |
| 11 *» | 11 * |
| 12 * Copyright (c) 2001-2006, Cisco Systems, Inc. | 12 * Copyright (c) 2001-2006, Cisco Systems, Inc. |
| 13 * All rights reserved. | 13 * All rights reserved. |
| 14 * | 14 * |
| 15 * Redistribution and use in source and binary forms, with or without | 15 * Redistribution and use in source and binary forms, with or without |
| 16 * modification, are permitted provided that the following conditions | 16 * modification, are permitted provided that the following conditions |
| 17 * are met: | 17 * are met: |
| 18 * | 18 * |
| 19 * Redistributions of source code must retain the above copyright | 19 * Redistributions of source code must retain the above copyright |
| 20 * notice, this list of conditions and the following disclaimer. | 20 * notice, this list of conditions and the following disclaimer. |
| 21 * | 21 * |
| 22 * Redistributions in binary form must reproduce the above | 22 * Redistributions in binary form must reproduce the above |
| 23 * copyright notice, this list of conditions and the following | 23 * copyright notice, this list of conditions and the following |
| 24 * disclaimer in the documentation and/or other materials provided | 24 * disclaimer in the documentation and/or other materials provided |
| 25 * with the distribution. | 25 * with the distribution. |
| 26 * | 26 * |
| 27 * Neither the name of the Cisco Systems, Inc. nor the names of its | 27 * Neither the name of the Cisco Systems, Inc. nor the names of its |
| 28 * contributors may be used to endorse or promote products derived | 28 * contributors may be used to endorse or promote products derived |
| 29 * from this software without specific prior written permission. | 29 * from this software without specific prior written permission. |
| 30 * | 30 * |
| 31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | 31 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS |
| 32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | 32 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT |
| 33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | 33 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS |
| 34 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | 34 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE |
| 35 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, | 35 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, |
| 36 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | 36 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
| 37 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | 37 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR |
| 38 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | 38 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | 39 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | 40 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 41 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | 41 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 42 * OF THE POSSIBILITY OF SUCH DAMAGE. | 42 * OF THE POSSIBILITY OF SUCH DAMAGE. |
| 43 * | 43 * |
| 44 */ | 44 */ |
| 45 | 45 |
| 46 #ifndef _AES_H | 46 #ifndef _AES_H |
| 47 #define _AES_H | 47 #define _AES_H |
| 48 | 48 |
| 49 #include "datatypes.h" | 49 #include "datatypes.h" |
| 50 #include "gf2_8.h" | |
| 51 #include "err.h" | 50 #include "err.h" |
| 52 | 51 |
| 52 #ifdef __cplusplus |
| 53 extern "C" { |
| 54 #endif |
| 55 |
| 53 /* aes internals */ | 56 /* aes internals */ |
| 54 | 57 |
| 55 typedef struct { | 58 typedef struct { |
| 56 v128_t round[15]; | 59 v128_t round[15]; |
| 57 int num_rounds; | 60 int num_rounds; |
| 58 } aes_expanded_key_t; | 61 } srtp_aes_expanded_key_t; |
| 59 | 62 |
| 60 err_status_t | 63 srtp_err_status_t srtp_aes_expand_encryption_key( |
| 61 aes_expand_encryption_key(const uint8_t *key, | 64 const uint8_t *key, |
| 62 » » » int key_len, | 65 int key_len, |
| 63 » » » aes_expanded_key_t *expanded_key); | 66 srtp_aes_expanded_key_t *expanded_key); |
| 64 | 67 |
| 65 err_status_t | 68 srtp_err_status_t srtp_aes_expand_decryption_key( |
| 66 aes_expand_decryption_key(const uint8_t *key, | 69 const uint8_t *key, |
| 67 » » » int key_len, | 70 int key_len, |
| 68 » » » aes_expanded_key_t *expanded_key); | 71 srtp_aes_expanded_key_t *expanded_key); |
| 69 | 72 |
| 70 void | 73 void srtp_aes_encrypt(v128_t *plaintext, const srtp_aes_expanded_key_t *exp_key)
; |
| 71 aes_encrypt(v128_t *plaintext, const aes_expanded_key_t *exp_key); | |
| 72 | 74 |
| 73 void | 75 void srtp_aes_decrypt(v128_t *plaintext, const srtp_aes_expanded_key_t *exp_key)
; |
| 74 aes_decrypt(v128_t *plaintext, const aes_expanded_key_t *exp_key); | |
| 75 | 76 |
| 76 #if 0 | 77 #ifdef __cplusplus |
| 77 /* | 78 } |
| 78 * internal functions | 79 #endif |
| 79 */ | |
| 80 | |
| 81 void | |
| 82 aes_init_sbox(void); | |
| 83 | |
| 84 void | |
| 85 aes_compute_tables(void); | |
| 86 #endif | |
| 87 | 80 |
| 88 #endif /* _AES_H */ | 81 #endif /* _AES_H */ |
| OLD | NEW |