1 /* 2 * RNG: Random Number Generator algorithms under the crypto API 3 * 4 * Copyright (c) 2008 Neil Horman <nhorman@tuxdriver.com> 5 * Copyright (c) 2015 Herbert Xu <herbert@gondor.apana.org.au> 6 * 7 * This program is free software; you can redistribute it and/or modify it 8 * under the terms of the GNU General Public License as published by the Free 9 * Software Foundation; either version 2 of the License, or (at your option) 10 * any later version. 11 * 12 */ 13 14 #ifndef _CRYPTO_INTERNAL_RNG_H 15 #define _CRYPTO_INTERNAL_RNG_H 16 17 #include <crypto/algapi.h> 18 #include <crypto/rng.h> 19 20 int crypto_register_rng(struct rng_alg *alg); 21 void crypto_unregister_rng(struct rng_alg *alg); 22 int crypto_register_rngs(struct rng_alg *algs, int count); 23 void crypto_unregister_rngs(struct rng_alg *algs, int count); 24 25 #if defined(CONFIG_CRYPTO_RNG) || defined(CONFIG_CRYPTO_RNG_MODULE) 26 int crypto_del_default_rng(void); 27 #else 28 static inline int crypto_del_default_rng(void) 29 { 30 return 0; 31 } 32 #endif 33 34 static inline void *crypto_rng_ctx(struct crypto_rng *tfm) 35 { 36 return crypto_tfm_ctx(&tfm->base); 37 } 38 39 static inline void crypto_rng_set_entropy(struct crypto_rng *tfm, 40 const u8 *data, unsigned int len) 41 { 42 crypto_rng_alg(tfm)->set_ent(tfm, data, len); 43 } 44 45 #endif 46