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| 1 /* | 1 /* |
| 2 * prng.h | 2 * prng.h |
| 3 * | 3 * |
| 4 * pseudorandom source | 4 * pseudorandom source |
| 5 * | 5 * |
| 6 * David A. McGrew | 6 * David A. McGrew |
| 7 * Cisco Systems, Inc. | 7 * Cisco Systems, Inc. |
| 8 */ | 8 */ |
| 9 /* | |
| 10 * | |
| 11 * Copyright (c) 2001-2006, Cisco Systems, Inc. | |
| 12 * All rights reserved. | |
| 13 * | |
| 14 * Redistribution and use in source and binary forms, with or without | |
| 15 * modification, are permitted provided that the following conditions | |
| 16 * are met: | |
| 17 * | |
| 18 * Redistributions of source code must retain the above copyright | |
| 19 * notice, this list of conditions and the following disclaimer. | |
| 20 * | |
| 21 * Redistributions in binary form must reproduce the above | |
| 22 * copyright notice, this list of conditions and the following | |
| 23 * disclaimer in the documentation and/or other materials provided | |
| 24 * with the distribution. | |
| 25 * | |
| 26 * Neither the name of the Cisco Systems, Inc. nor the names of its | |
| 27 * contributors may be used to endorse or promote products derived | |
| 28 * from this software without specific prior written permission. | |
| 29 * | |
| 30 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
| 31 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
| 32 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |
| 33 * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | |
| 34 * COPYRIGHT HOLDERS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, | |
| 35 * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
| 36 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
| 37 * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
| 38 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
| 39 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
| 40 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
| 41 * OF THE POSSIBILITY OF SUCH DAMAGE. | |
| 42 * | |
| 43 */ | |
| 44 | 9 |
| 45 #ifndef PRNG_H | 10 #ifndef PRNG_H |
| 46 #define PRNG_H | 11 #define PRNG_H |
| 47 | 12 |
| 48 #include "rand_source.h" /* for rand_source_func_t definition */ | 13 #include "rand_source.h" /* for rand_source_func_t definition */ |
| 49 #include "aes.h" /* for aes */ | 14 #include "aes.h" /* for aes */ |
| 15 //FIXME: this is temporary until we pull in the code to use OpenSSL for RNG |
| 16 #ifdef OPENSSL |
| 17 #include "aes_icm_ossl.h" /* for aes ctr */ |
| 18 #else |
| 50 #include "aes_icm.h" /* for aes ctr */ | 19 #include "aes_icm.h" /* for aes ctr */ |
| 20 #endif |
| 51 | 21 |
| 52 #define MAX_PRNG_OUT_LEN 0xffffffffU | 22 #define MAX_PRNG_OUT_LEN 0xffffffffU |
| 53 | 23 |
| 54 /* | 24 /* |
| 55 * x917_prng is an ANSI X9.17-like AES-based PRNG | 25 * x917_prng is an ANSI X9.17-like AES-based PRNG |
| 56 */ | 26 */ |
| 57 | 27 |
| 58 typedef struct { | 28 typedef struct { |
| 59 v128_t state; /* state data */ | 29 v128_t state; /* state data */ |
| 60 aes_expanded_key_t key; /* secret key */ | 30 aes_expanded_key_t key; /* secret key */ |
| (...skipping 19 matching lines...) Loading... |
| 80 } ctr_prng_t; | 50 } ctr_prng_t; |
| 81 | 51 |
| 82 err_status_t | 52 err_status_t |
| 83 ctr_prng_init(rand_source_func_t random_source); | 53 ctr_prng_init(rand_source_func_t random_source); |
| 84 | 54 |
| 85 err_status_t | 55 err_status_t |
| 86 ctr_prng_get_octet_string(void *dest, uint32_t len); | 56 ctr_prng_get_octet_string(void *dest, uint32_t len); |
| 87 | 57 |
| 88 | 58 |
| 89 #endif | 59 #endif |
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