Raise an error on syscall failure in tls_retry_write_records
[openssl.git] / providers / implementations / include / prov / seeding.h
1 /*
2  * Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
3  *
4  * Licensed under the Apache License 2.0 (the "License").  You may not use
5  * this file except in compliance with the License.  You can obtain a copy
6  * in the file LICENSE in the source distribution or at
7  * https://www.openssl.org/source/license.html
8  */
9
10 #include "prov/provider_ctx.h"
11 #include "crypto/rand_pool.h"
12
13 /* Hardware-based seeding functions. */
14 size_t ossl_prov_acquire_entropy_from_tsc(RAND_POOL *pool);
15 size_t ossl_prov_acquire_entropy_from_cpu(RAND_POOL *pool);
16
17 /*
18  * External seeding functions from the core dispatch table.
19  */
20 int ossl_prov_seeding_from_dispatch(const OSSL_DISPATCH *fns);
21
22 size_t ossl_prov_get_entropy(PROV_CTX *prov_ctx, unsigned char **pout,
23                              int entropy, size_t min_len, size_t max_len);
24 void ossl_prov_cleanup_entropy(PROV_CTX *prov_ctx, unsigned char *buf,
25                                size_t len);
26 size_t ossl_prov_get_nonce(PROV_CTX *prov_ctx, unsigned char **pout,
27                            size_t min_len, size_t max_len,
28                            const void *salt, size_t salt_len);
29 void ossl_prov_cleanup_nonce(PROV_CTX *prov_ctx, unsigned char *buf,
30                              size_t len);