The Tor Browser / file comparison
comparison: netwerk/srtp/src/crypto/include/rand_source.h
netwerk/srtp/src/crypto/include/rand_source.h
- changeset 0
- 6474c204b198
equal
deleted
inserted
replaced
| -1:000000000000 | 0:5b50962fac4b |
|---|---|
| 1 /* | |
| 2 * rand_source.h | |
| 3 * | |
| 4 * implements a random source based on /dev/random | |
| 5 * | |
| 6 * David A. McGrew | |
| 7 * Cisco Systems, Inc. | |
| 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 | |
| 45 | |
| 46 #ifndef RAND_SOURCE | |
| 47 #define RAND_SOURCE | |
| 48 | |
| 49 #include "err.h" | |
| 50 #include "datatypes.h" | |
| 51 | |
| 52 err_status_t | |
| 53 rand_source_init(void); | |
| 54 | |
| 55 /* | |
| 56 * rand_source_get_octet_string() writes a random octet string. | |
| 57 * | |
| 58 * The function call rand_source_get_octet_string(dest, len) writes | |
| 59 * len octets of random data to the location to which dest points, | |
| 60 * and returns an error code. This error code should be checked, | |
| 61 * and if a failure is reported, the data in the buffer MUST NOT | |
| 62 * be used. | |
| 63 * | |
| 64 * warning: If the return code is not checked, then non-random | |
| 65 * data may inadvertently be used. | |
| 66 * | |
| 67 * returns: | |
| 68 * - err_status_ok if no problems occured. | |
| 69 * - [other] a problem occured, and no assumptions should | |
| 70 * be made about the contents of the destination | |
| 71 * buffer. | |
| 72 */ | |
| 73 | |
| 74 err_status_t | |
| 75 rand_source_get_octet_string(void *dest, uint32_t length); | |
| 76 | |
| 77 err_status_t | |
| 78 rand_source_deinit(void); | |
| 79 | |
| 80 /* | |
| 81 * function prototype for a random source function | |
| 82 * | |
| 83 * A rand_source_func_t writes num_octets at the location indicated by | |
| 84 * dest and returns err_status_ok. Any other return value indicates | |
| 85 * failure. | |
| 86 */ | |
| 87 | |
| 88 typedef err_status_t (*rand_source_func_t) | |
| 89 (void *dest, uint32_t num_octets); | |
| 90 | |
| 91 #endif /* RAND_SOURCE */ |
