fc5ecaddd0
While stereotyped repetitions are frowned upon in literature, they serve a useful purpose in manual pages, because it is easier for the user to find certain information if it is always presented in the same way. For that reason, this commit harmonizes the varying formulations in the HISTORY section about which functions, flags, etc. were added in which OpenSSL version. It also attempts to make the pod files more grep friendly by avoiding to insert line breaks between the symbol names and the corresponding version number in which they were introduced (wherever possible). Some punctuation and typographical errors were fixed on the way. Reviewed-by: Tim Hudson <tjh@openssl.org> (Merged from https://github.com/openssl/openssl/pull/7854)
53 lines
1.5 KiB
Text
53 lines
1.5 KiB
Text
=pod
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=head1 NAME
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EVP_PKEY_supports_digest_nid - indicate support for signature digest
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=head1 SYNOPSIS
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#include <openssl/evp.h>
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int EVP_PKEY_supports_digest_nid(EVP_PKEY *pkey, int nid);
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=head1 DESCRIPTION
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The EVP_PKEY_supports_digest_nid() function queries whether the message digest
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NID B<nid> is supported for public key signature operations associated with key
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B<pkey>.
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=head1 NOTES
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If the EVP_PKEY implementation does not explicitly support this method, but
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L<EVP_PKEY_get_default_digest_nid(3)> returns a mandatory digest result, then
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only that mandatory digest will be supported.
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=head1 RETURN VALUES
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The EVP_PKEY_supports_digest_nid() function returns 1 if the message digest
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algorithm identified by B<nid> can be used for public key signature operations
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associated with key B<pkey> and 0 if it cannot be used. It returns a negative
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value for failure. In particular a return value of -2 indicates the query
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operation is not supported by the public key algorithm.
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=head1 SEE ALSO
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L<EVP_PKEY_CTX_new(3)>,
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L<EVP_PKEY_get_default_digest_nid(3)>,
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L<EVP_PKEY_sign(3)>,
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L<EVP_PKEY_verify(3)>,
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L<EVP_PKEY_verify_recover(3)>,
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=head1 HISTORY
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The EVP_PKEY_supports_digest_nid() function was added in OpenSSL 3.0.0.
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=head1 COPYRIGHT
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Copyright 2006-2018 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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