| /* |
| * 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); |