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/*
* Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include "prov/provider_ctx.h"
#include "crypto/rand_pool.h"
/* Hardware-based seeding functions. */
size_t ossl_prov_acquire_entropy_from_tsc(RAND_POOL *pool);
size_t ossl_prov_acquire_entropy_from_cpu(RAND_POOL *pool);
/*
* Add some platform specific additional data
*
* This function is platform specific and adds some random noise to the
* additional data used for generating random bytes and for reseeding
* the drbg.
*
* Returns 1 on success and 0 on failure.
*/
int ossl_rand_pool_add_additional_data(RAND_POOL *pool);
/*
* External seeding functions from the core dispatch table.
*/
int ossl_prov_seeding_from_dispatch(const OSSL_DISPATCH *fns);
size_t ossl_prov_get_entropy(PROV_CTX *prov_ctx, unsigned char **pout,
int entropy, size_t min_len, size_t max_len);
void ossl_prov_cleanup_entropy(PROV_CTX *prov_ctx, unsigned char *buf,
size_t len);
size_t ossl_prov_get_nonce(PROV_CTX *prov_ctx, unsigned char **pout,
size_t min_len, size_t max_len,
const void *salt, size_t salt_len);
void ossl_prov_cleanup_nonce(PROV_CTX *prov_ctx, unsigned char *buf,
size_t len);
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