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/* Copyright (c) 2015, Google Inc.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
* WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY
* SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
* WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
* CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. */
#ifndef OPENSSL_HEADER_CRYPTO_RAND_INTERNAL_H
#define OPENSSL_HEADER_CRYPTO_RAND_INTERNAL_H
#if defined(__cplusplus)
extern "C" {
#endif
/* CRYPTO_sysrand fills |len| bytes at |buf| with entropy from the operating
* system. */
void CRYPTO_sysrand(uint8_t *buf, size_t len);
/* CRYPTO_have_hwrand returns one iff |CRYPTO_hwrand| can be called to generate
* hardware entropy. */
int CRYPTO_have_hwrand(void);
/* CRYPTO_hwrand fills |len| bytes at |buf| with entropy from the hardware.
* This function can only be called if |CRYPTO_have_hwrand| returns one.
* It returns one on success or zero on hardware failure. */
int CRYPTO_hwrand(uint8_t *buf, size_t len);
#if defined(__cplusplus)
} /* extern C */
#endif
#endif /* OPENSSL_HEADER_CRYPTO_RAND_INTERNAL_H */
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