1 /* SPDX-License-Identifier: GPL-2.0-or-later */ 2 /* 3 * RNG: Random Number Generator algorithms under the crypto API 4 * 5 * Copyright (c) 2008 Neil Horman <nhorman@tuxdriver.com> 6 * Copyright (c) 2015 Herbert Xu <herbert@gondor.apana.org.au> 7 */ 8 9 #ifndef _CRYPTO_INTERNAL_RNG_H 10 #define _CRYPTO_INTERNAL_RNG_H 11 12 #include <crypto/algapi.h> 13 #include <crypto/rng.h> 14 15 int crypto_register_rng(struct rng_alg *alg); 16 void crypto_unregister_rng(struct rng_alg *alg); 17 int crypto_register_rngs(struct rng_alg *algs, int count); 18 void crypto_unregister_rngs(struct rng_alg *algs, int count); 19 20 #if defined(CONFIG_CRYPTO_RNG) || defined(CONFIG_CRYPTO_RNG_MODULE) 21 int crypto_del_default_rng(void); 22 #else 23 static inline int crypto_del_default_rng(void) 24 { 25 return 0; 26 } 27 #endif 28 29 static inline void *crypto_rng_ctx(struct crypto_rng *tfm) 30 { 31 return crypto_tfm_ctx(&tfm->base); 32 } 33 34 static inline void crypto_rng_set_entropy(struct crypto_rng *tfm, 35 const u8 *data, unsigned int len) 36 { 37 crypto_rng_alg(tfm)->set_ent(tfm, data, len); 38 } 39 40 #endif 41