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- .\" -*- mode: troff; coding: utf-8 -*-
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- .IX Title "EVP_MD-SHA1 7ossl"
- .TH EVP_MD-SHA1 7ossl 2025-01-17 3.4.0 OpenSSL
- .\" For nroff, turn off justification. Always turn off hyphenation; it makes
- .\" way too many mistakes in technical documents.
- .if n .ad l
- .nh
- .SH NAME
- EVP_MD\-SHA1 \- The SHA1 EVP_MD implementation
- .SH DESCRIPTION
- .IX Header "DESCRIPTION"
- Support for computing SHA1 digests through the \fBEVP_MD\fR API.
- .SS Identities
- .IX Subsection "Identities"
- This implementation is available with the FIPS provider as well as the
- default provider, and is identified with the names "SHA1" and "SHA\-1".
- .SS "Gettable Parameters"
- .IX Subsection "Gettable Parameters"
- This implementation supports the common gettable parameters described
- in \fBEVP_MD\-common\fR\|(7).
- .SS "Settable Context Parameters"
- .IX Subsection "Settable Context Parameters"
- This implementation supports the following \fBOSSL_PARAM\fR\|(3) entries,
- settable for an \fBEVP_MD_CTX\fR with \fBEVP_MD_CTX_set_params\fR\|(3):
- .IP """ssl3\-ms"" (\fBOSSL_DIGEST_PARAM_SSL3_MS\fR) <octet string>" 4
- .IX Item """ssl3-ms"" (OSSL_DIGEST_PARAM_SSL3_MS) <octet string>"
- This parameter is set by libssl in order to calculate a signature hash for an
- SSLv3 CertificateVerify message as per RFC6101.
- It is only set after all handshake messages have already been digested via
- \&\fBOP_digest_update()\fR calls.
- The parameter provides the master secret value to be added to the digest.
- The digest implementation should calculate the complete digest as per RFC6101
- section 5.6.8.
- The next call after setting this parameter should be \fBOP_digest_final()\fR.
- .SH "SEE ALSO"
- .IX Header "SEE ALSO"
- \&\fBEVP_MD_CTX_set_params\fR\|(3), \fBprovider\-digest\fR\|(7),
- \&\fBOSSL_PROVIDER\-FIPS\fR\|(7), \fBOSSL_PROVIDER\-default\fR\|(7)
- .SH COPYRIGHT
- .IX Header "COPYRIGHT"
- Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
- .PP
- Licensed under the Apache License 2.0 (the "License"). You may not use
- this file except in compliance with the License. You can obtain a copy
- in the file LICENSE in the source distribution or at
- <https://www.openssl.org/source/license.html>.
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