Android_verify/third_party/android-libs/share/man/man7/EVP_SIGNATURE-DSA.7ossl

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.\" ========================================================================
.\"
.IX Title "EVP_SIGNATURE-DSA 7ossl"
.TH EVP_SIGNATURE-DSA 7ossl "2024-09-03" "3.3.2" "OpenSSL"
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.nh
.SH "NAME"
EVP_SIGNATURE\-DSA
\&\- The EVP_PKEY DSA signature implementation
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
Support for computing \s-1DSA\s0 signatures.
See \s-1\fBEVP_PKEY\-DSA\s0\fR\|(7) for information related to \s-1DSA\s0 keys.
.SS "Signature Parameters"
.IX Subsection "Signature Parameters"
The following signature parameters can be set using \fBEVP_PKEY_CTX_set_params()\fR.
This may be called after \fBEVP_PKEY_sign_init()\fR or \fBEVP_PKEY_verify_init()\fR,
and before calling \fBEVP_PKEY_sign()\fR or \fBEVP_PKEY_verify()\fR.
.ie n .IP """digest"" (\fB\s-1OSSL_SIGNATURE_PARAM_DIGEST\s0\fR) <\s-1UTF8\s0 string>" 4
.el .IP "``digest'' (\fB\s-1OSSL_SIGNATURE_PARAM_DIGEST\s0\fR) <\s-1UTF8\s0 string>" 4
.IX Item "digest (OSSL_SIGNATURE_PARAM_DIGEST) <UTF8 string>"
.PD 0
.ie n .IP """properties"" (\fB\s-1OSSL_SIGNATURE_PARAM_PROPERTIES\s0\fR) <\s-1UTF8\s0 string>" 4
.el .IP "``properties'' (\fB\s-1OSSL_SIGNATURE_PARAM_PROPERTIES\s0\fR) <\s-1UTF8\s0 string>" 4
.IX Item "properties (OSSL_SIGNATURE_PARAM_PROPERTIES) <UTF8 string>"
.ie n .IP """nonce-type"" (\fB\s-1OSSL_SIGNATURE_PARAM_NONCE_TYPE\s0\fR) <unsigned integer>" 4
.el .IP "``nonce-type'' (\fB\s-1OSSL_SIGNATURE_PARAM_NONCE_TYPE\s0\fR) <unsigned integer>" 4
.IX Item "nonce-type (OSSL_SIGNATURE_PARAM_NONCE_TYPE) <unsigned integer>"
.PD
The settable parameters are described in \fBprovider\-signature\fR\|(7).
.PP
The following signature parameters can be retrieved using
\&\fBEVP_PKEY_CTX_get_params()\fR.
.ie n .IP """algorithm-id"" (\fB\s-1OSSL_SIGNATURE_PARAM_ALGORITHM_ID\s0\fR) <octet string>" 4
.el .IP "``algorithm-id'' (\fB\s-1OSSL_SIGNATURE_PARAM_ALGORITHM_ID\s0\fR) <octet string>" 4
.IX Item "algorithm-id (OSSL_SIGNATURE_PARAM_ALGORITHM_ID) <octet string>"
.PD 0
.ie n .IP """digest"" (\fB\s-1OSSL_SIGNATURE_PARAM_DIGEST\s0\fR) <\s-1UTF8\s0 string>" 4
.el .IP "``digest'' (\fB\s-1OSSL_SIGNATURE_PARAM_DIGEST\s0\fR) <\s-1UTF8\s0 string>" 4
.IX Item "digest (OSSL_SIGNATURE_PARAM_DIGEST) <UTF8 string>"
.ie n .IP """nonce-type"" (\fB\s-1OSSL_SIGNATURE_PARAM_NONCE_TYPE\s0\fR) <unsigned integer>" 4
.el .IP "``nonce-type'' (\fB\s-1OSSL_SIGNATURE_PARAM_NONCE_TYPE\s0\fR) <unsigned integer>" 4
.IX Item "nonce-type (OSSL_SIGNATURE_PARAM_NONCE_TYPE) <unsigned integer>"
.PD
The gettable parameters are described in \fBprovider\-signature\fR\|(7).
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBEVP_PKEY_CTX_set_params\fR\|(3),
\&\fBEVP_PKEY_sign\fR\|(3),
\&\fBEVP_PKEY_verify\fR\|(3),
\&\fBprovider\-signature\fR\|(7),
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2020\-2023 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the Apache License 2.0 (the \*(L"License\*(R").  You may not use
this file except in compliance with the License.  You can obtain a copy
in the file \s-1LICENSE\s0 in the source distribution or at
<https://www.openssl.org/source/license.html>.