| =pod |
| |
| =head1 NAME |
| |
| RAND_set_DRBG_type, |
| RAND_set_seed_source_type |
| - specify the global random number generator types |
| |
| =head1 SYNOPSIS |
| |
| #include <openssl/rand.h> |
| |
| int RAND_set_DRBG_type(OSSL_LIB_CTX *ctx, const char *drbg, const char *propq, |
| const char *cipher, const char *digest); |
| int RAND_set_seed_source_type(OSSL_LIB_CTX *ctx, const char *seed, |
| const char *propq); |
| |
| =head1 DESCRIPTION |
| |
| RAND_set_DRBG_type() specifies the random bit generator that will be |
| used within the library context I<ctx>. A generator of name I<drbg> |
| with properties I<propq> will be fetched. It will be instantiated with |
| either I<cipher> or I<digest> as its underlying cryptographic algorithm. |
| This specifies the type that will be used for the primary, public and |
| private random instances. |
| |
| RAND_set_seed_source_type() specifies the seed source that will be used |
| within the library context I<ctx>. The seed source of name I<seed> |
| with properties I<propq> will be fetched and used to seed the primary |
| random big generator. |
| |
| =head1 RETURN VALUES |
| |
| These function return 1 on success and 0 on failure. |
| |
| =head1 NOTES |
| |
| These functions must be called before the random bit generators are first |
| created in the library context. They will return an error if the call |
| is made too late. |
| |
| The default DRBG is "CTR-DRBG" using the "AES-256-CTR" cipher. |
| |
| The default seed source is "SEED-SRC". |
| |
| =head1 SEE ALSO |
| |
| L<EVP_RAND(3)>, |
| L<RAND_get0_primary(3)> |
| |
| =head1 HISTORY |
| |
| These functions were added in OpenSSL 3.0. |
| |
| =head1 COPYRIGHT |
| |
| Copyright 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 |
| L<https://www.openssl.org/source/license.html>. |
| |
| =cut |
