random_seed.h (1331B)
1 /* 2 * Copyright (c) 2009 Baptiste Coudurier <baptiste.coudurier@gmail.com> 3 * 4 * This file is part of Libav. 5 * 6 * Libav is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU Lesser General Public 8 * License as published by the Free Software Foundation; either 9 * version 2.1 of the License, or (at your option) any later version. 10 * 11 * Libav is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU 14 * Lesser General Public License for more details. 15 * 16 * You should have received a copy of the GNU Lesser General Public 17 * License along with Libav; if not, write to the Free Software 18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA 19 */ 20 21 #ifndef AVUTIL_RANDOM_SEED_H 22 #define AVUTIL_RANDOM_SEED_H 23 24 #include <stdint.h> 25 /** 26 * @addtogroup lavu_crypto 27 * @{ 28 */ 29 30 /** 31 * Get random data. 32 * 33 * This function can be called repeatedly to generate more random bits 34 * as needed. It is generally quite slow, and usually used to seed a 35 * PRNG. As it uses /dev/urandom and /dev/random, the quality of the 36 * returned random data depends on the platform. 37 */ 38 uint32_t av_get_random_seed(void); 39 40 /** 41 * @} 42 */ 43 44 #endif /* AVUTIL_RANDOM_SEED_H */