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63 lines
1.6 KiB
Plaintext
63 lines
1.6 KiB
Plaintext
=pod
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=head1 NAME
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EVP_MD-common - The OpenSSL EVP_MD implementations, common things
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=head1 DESCRIPTION
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All the OpenSSL EVP_MD implementations understand the following
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L<OSSL_PARAM(3)> entries that are
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gettable with L<EVP_MD_get_params(3)>, as well as these:
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=over 4
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=item "blocksize" (B<OSSL_DIGEST_PARAM_BLOCK_SIZE>) <unsigned integer>
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The digest block size.
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The length of the "blocksize" parameter should not exceed that of a
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B<size_t>.
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This value can also be retrieved with L<EVP_MD_get_block_size(3)>.
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=item "size" (B<OSSL_DIGEST_PARAM_SIZE>) <unsigned integer>
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The digest output size.
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The length of the "size" parameter should not exceed that of a B<size_t>.
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This value can also be retrieved with L<EVP_MD_get_size(3)>.
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=item "flags" (B<OSSL_DIGEST_PARAM_FLAGS>) <unsigned integer>
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Diverse flags that describe exceptional behaviour for the digest.
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These flags are described in L<EVP_MD_meth_set_flags(3)/DESCRIPTION>.
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The length of the "flags" parameter should equal that of an
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B<unsigned long int>.
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=begin comment
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The description of these flags should probably be moved. Also,
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EVP_MD_FLAG_FIPS isn't relevant any more.
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=end comment
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This value can also be retrieved with L<EVP_MD_get_flags(3)>.
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=back
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=head1 SEE ALSO
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L<EVP_MD_get_params(3)>, L<provider-digest(7)>
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=head1 COPYRIGHT
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Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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