1=pod 2 3=head1 NAME 4 5EVP_SIGNATURE-DSA 6- The B<EVP_PKEY> DSA signature implementation 7 8=head1 DESCRIPTION 9 10Support for computing DSA signatures. 11See L<EVP_PKEY-DSA(7)> for information related to DSA keys. 12 13=head2 Signature Parameters 14 15The following signature parameters can be set using EVP_PKEY_CTX_set_params(). 16This may be called after EVP_PKEY_sign_init() or EVP_PKEY_verify_init(), 17and before calling EVP_PKEY_sign() or EVP_PKEY_verify(). 18 19=over 4 20 21=item "digest" (B<OSSL_SIGNATURE_PARAM_DIGEST>) <UTF8 string> 22 23=item "properties" (B<OSSL_SIGNATURE_PARAM_PROPERTIES>) <UTF8 string> 24 25The settable parameters are described in L<provider-signature(7)>. 26 27=back 28 29The following signature parameters can be retrieved using 30EVP_PKEY_CTX_get_params(). 31 32=over 4 33 34=item "algorithm-id" (B<OSSL_SIGNATURE_PARAM_ALGORITHM_ID>) <octet string> 35 36=item "digest" (B<OSSL_SIGNATURE_PARAM_DIGEST>) <UTF8 string> 37 38The gettable parameters are described in L<provider-signature(7)>. 39 40=back 41 42=head1 SEE ALSO 43 44L<EVP_PKEY_CTX_set_params(3)>, 45L<EVP_PKEY_sign(3)>, 46L<EVP_PKEY_verify(3)>, 47L<provider-signature(7)>, 48 49=head1 COPYRIGHT 50 51Copyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved. 52 53Licensed under the Apache License 2.0 (the "License"). You may not use 54this file except in compliance with the License. You can obtain a copy 55in the file LICENSE in the source distribution or at 56L<https://www.openssl.org/source/license.html>. 57 58=cut 59