LXR linux/include/crypto/internal/rng.h

   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->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