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kernel/linux-rt-4.4.41/include/crypto/internal/rng.h 1.2 KB
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  /*
   * RNG: Random Number Generator  algorithms under the crypto API
   *
   * Copyright (c) 2008 Neil Horman <nhorman@tuxdriver.com>
   * Copyright (c) 2015 Herbert Xu <herbert@gondor.apana.org.au>
   *
   * This program is free software; you can redistribute it and/or modify it
   * under the terms of the GNU General Public License as published by the Free
   * Software Foundation; either version 2 of the License, or (at your option)
   * any later version.
   *
   */
  
  #ifndef _CRYPTO_INTERNAL_RNG_H
  #define _CRYPTO_INTERNAL_RNG_H
  
  #include <crypto/algapi.h>
  #include <crypto/rng.h>
  
  int crypto_register_rng(struct rng_alg *alg);
  void crypto_unregister_rng(struct rng_alg *alg);
  int crypto_register_rngs(struct rng_alg *algs, int count);
  void crypto_unregister_rngs(struct rng_alg *algs, int count);
  
  #if defined(CONFIG_CRYPTO_RNG) || defined(CONFIG_CRYPTO_RNG_MODULE)
  int crypto_del_default_rng(void);
  #else
  static inline int crypto_del_default_rng(void)
  {
  	return 0;
  }
  #endif
  
  static inline void *crypto_rng_ctx(struct crypto_rng *tfm)
  {
  	return crypto_tfm_ctx(&tfm->base);
  }
  
  static inline void crypto_rng_set_entropy(struct crypto_rng *tfm,
  					  const u8 *data, unsigned int len)
  {
  	crypto_rng_alg(tfm)->set_ent(tfm, data, len);
  }
  
  #endif