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