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
15int crypto_register_rng(struct rng_alg *alg);
16void crypto_unregister_rng(struct rng_alg *alg);
17int crypto_register_rngs(struct rng_alg *algs, int count);
18void crypto_unregister_rngs(struct rng_alg *algs, int count);
19
20#if defined(CONFIG_CRYPTO_RNG) || defined(CONFIG_CRYPTO_RNG_MODULE)
21int crypto_del_default_rng(void);
22#else
23static inline int crypto_del_default_rng(void)
24{
25 return 0;
26}
27#endif
28
29static inline void *crypto_rng_ctx(struct crypto_rng *tfm)
30{
31 return crypto_tfm_ctx(tfm: &tfm->base);
32}
33
34static 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