| =pod |
| |
| =head1 NAME |
| |
| EVP_MD-common - The OpenSSL EVP_MD implementations, common things |
| |
| =head1 DESCRIPTION |
| |
| All the OpenSSL EVP_MD implementations understand the following |
| L<OSSL_PARAM(3)> entries that are |
| gettable with L<EVP_MD_get_params(3)>, as well as these: |
| |
| =over 4 |
| |
| =item "blocksize" (B<OSSL_DIGEST_PARAM_BLOCK_SIZE>) <unsigned integer> |
| |
| The digest block size. |
| The length of the "blocksize" parameter should not exceed that of a |
| B<size_t>. |
| |
| This value can also be retrieved with L<EVP_MD_get_block_size(3)>. |
| |
| =item "size" (B<OSSL_DIGEST_PARAM_SIZE>) <unsigned integer> |
| |
| The digest output size. |
| The length of the "size" parameter should not exceed that of a B<size_t>. |
| |
| This value can also be retrieved with L<EVP_MD_get_size(3)>. |
| |
| =item "flags" (B<OSSL_DIGEST_PARAM_FLAGS>) <unsigned integer> |
| |
| Diverse flags that describe exceptional behaviour for the digest. |
| These flags are described in L<EVP_MD_meth_set_flags(3)/DESCRIPTION>. |
| |
| The length of the "flags" parameter should equal that of an |
| B<unsigned long int>. |
| |
| =begin comment |
| |
| The description of these flags should probably be moved. Also, |
| EVP_MD_FLAG_FIPS isn't relevant any more. |
| |
| =end comment |
| |
| This value can also be retrieved with L<EVP_MD_get_flags(3)>. |
| |
| =back |
| |
| =head1 SEE ALSO |
| |
| L<EVP_MD_get_params(3)>, L<provider-digest(7)> |
| |
| =head1 COPYRIGHT |
| |
| 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 |
| L<https://www.openssl.org/source/license.html>. |
| |
| =cut |
