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
crypto_del_default_rng(void)28 static inline int crypto_del_default_rng(void)
29 {
30 	return 0;
31 }
32 #endif
33 
crypto_rng_ctx(struct crypto_rng * tfm)34 static inline void *crypto_rng_ctx(struct crypto_rng *tfm)
35 {
36 	return crypto_tfm_ctx(&tfm->base);
37 }
38 
crypto_rng_set_entropy(struct crypto_rng * tfm,const u8 * data,unsigned int len)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