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

   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
  20int crypto_register_rng(struct rng_alg *alg);
  21void crypto_unregister_rng(struct rng_alg *alg);
  22int crypto_register_rngs(struct rng_alg *algs, int count);
  23void crypto_unregister_rngs(struct rng_alg *algs, int count);
  24
  25#if defined(CONFIG_CRYPTO_RNG) || defined(CONFIG_CRYPTO_RNG_MODULE)
  26int crypto_del_default_rng(void);
  27#else
  28static inline int crypto_del_default_rng(void)
  29{
  30        return 0;
  31}
  32#endif
  33
  34static inline void *crypto_rng_ctx(struct crypto_rng *tfm)
  35{
  36        return crypto_tfm_ctx(&tfm->base);
  37}
  38
  39static 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