xref: /openbmc/linux/include/crypto/internal/rng.h (revision 2874c5fd)
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
crypto_del_default_rng(void)23 static inline int crypto_del_default_rng(void)
24 {
25 	return 0;
26 }
27 #endif
28 
crypto_rng_ctx(struct crypto_rng * tfm)29 static inline void *crypto_rng_ctx(struct crypto_rng *tfm)
30 {
31 	return crypto_tfm_ctx(&tfm->base);
32 }
33 
crypto_rng_set_entropy(struct crypto_rng * tfm,const u8 * data,unsigned int len)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