1*b077aed3SPierre Pronchery=pod 2*b077aed3SPierre Pronchery 3*b077aed3SPierre Pronchery=head1 NAME 4*b077aed3SPierre Pronchery 5*b077aed3SPierre ProncheryEVP_SIGNATURE-DSA 6*b077aed3SPierre Pronchery- The B<EVP_PKEY> DSA signature implementation 7*b077aed3SPierre Pronchery 8*b077aed3SPierre Pronchery=head1 DESCRIPTION 9*b077aed3SPierre Pronchery 10*b077aed3SPierre ProncherySupport for computing DSA signatures. 11*b077aed3SPierre ProncherySee L<EVP_PKEY-DSA(7)> for information related to DSA keys. 12*b077aed3SPierre Pronchery 13*b077aed3SPierre Pronchery=head2 Signature Parameters 14*b077aed3SPierre Pronchery 15*b077aed3SPierre ProncheryThe following signature parameters can be set using EVP_PKEY_CTX_set_params(). 16*b077aed3SPierre ProncheryThis may be called after EVP_PKEY_sign_init() or EVP_PKEY_verify_init(), 17*b077aed3SPierre Proncheryand before calling EVP_PKEY_sign() or EVP_PKEY_verify(). 18*b077aed3SPierre Pronchery 19*b077aed3SPierre Pronchery=over 4 20*b077aed3SPierre Pronchery 21*b077aed3SPierre Pronchery=item "digest" (B<OSSL_SIGNATURE_PARAM_DIGEST>) <UTF8 string> 22*b077aed3SPierre Pronchery 23*b077aed3SPierre Pronchery=item "properties" (B<OSSL_SIGNATURE_PARAM_PROPERTIES>) <UTF8 string> 24*b077aed3SPierre Pronchery 25*b077aed3SPierre ProncheryThe settable parameters are described in L<provider-signature(7)>. 26*b077aed3SPierre Pronchery 27*b077aed3SPierre Pronchery=back 28*b077aed3SPierre Pronchery 29*b077aed3SPierre ProncheryThe following signature parameters can be retrieved using 30*b077aed3SPierre ProncheryEVP_PKEY_CTX_get_params(). 31*b077aed3SPierre Pronchery 32*b077aed3SPierre Pronchery=over 4 33*b077aed3SPierre Pronchery 34*b077aed3SPierre Pronchery=item "algorithm-id" (B<OSSL_SIGNATURE_PARAM_ALGORITHM_ID>) <octet string> 35*b077aed3SPierre Pronchery 36*b077aed3SPierre Pronchery=item "digest" (B<OSSL_SIGNATURE_PARAM_DIGEST>) <UTF8 string> 37*b077aed3SPierre Pronchery 38*b077aed3SPierre ProncheryThe gettable parameters are described in L<provider-signature(7)>. 39*b077aed3SPierre Pronchery 40*b077aed3SPierre Pronchery=back 41*b077aed3SPierre Pronchery 42*b077aed3SPierre Pronchery=head1 SEE ALSO 43*b077aed3SPierre Pronchery 44*b077aed3SPierre ProncheryL<EVP_PKEY_CTX_set_params(3)>, 45*b077aed3SPierre ProncheryL<EVP_PKEY_sign(3)>, 46*b077aed3SPierre ProncheryL<EVP_PKEY_verify(3)>, 47*b077aed3SPierre ProncheryL<provider-signature(7)>, 48*b077aed3SPierre Pronchery 49*b077aed3SPierre Pronchery=head1 COPYRIGHT 50*b077aed3SPierre Pronchery 51*b077aed3SPierre ProncheryCopyright 2020-2021 The OpenSSL Project Authors. All Rights Reserved. 52*b077aed3SPierre Pronchery 53*b077aed3SPierre ProncheryLicensed under the Apache License 2.0 (the "License"). You may not use 54*b077aed3SPierre Proncherythis file except in compliance with the License. You can obtain a copy 55*b077aed3SPierre Proncheryin the file LICENSE in the source distribution or at 56*b077aed3SPierre ProncheryL<https://www.openssl.org/source/license.html>. 57*b077aed3SPierre Pronchery 58*b077aed3SPierre Pronchery=cut 59