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doc/man7/EVP_MD-common.pod

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+=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:
+
+=over 4
+
+Gettable with L<EVP_MD_get_params(3)>:
+
+=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_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_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_flags(3)>.
+
+=back
+
+=back
+
+=head1 SEE ALSO
+
+L<EVP_MD_get_params(3)>, L<provider-digest(7)>
+
+=head1 COPYRIGHT
+
+Copyright 2020 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