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