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