mirror of https://github.com/openssl/openssl
56 lines
1.6 KiB
Plaintext
56 lines
1.6 KiB
Plaintext
=pod
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=head1 NAME
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EVP_MD-SHA1 - The SHA1 EVP_MD implementation
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=head1 DESCRIPTION
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Support for computing SHA1 digests through the B<EVP_MD> API.
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=head2 Identities
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This implementation is available with the FIPS provider as well as the
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default provider, and is identified with the names "SHA1" and "SHA-1".
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=head2 Gettable Parameters
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This implementation supports the common gettable parameters described
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in L<EVP_MD-common(7)>.
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=head2 Settable Context Parameters
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This implementation supports the following L<OSSL_PARAM(3)> entries,
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settable for an B<EVP_MD_CTX> with L<EVP_MD_CTX_set_params(3)>:
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=over 4
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=item "ssl3-ms" (B<OSSL_DIGEST_PARAM_SSL3_MS>) <octet string>
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This parameter is set by libssl in order to calculate a signature hash for an
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SSLv3 CertificateVerify message as per RFC6101.
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It is only set after all handshake messages have already been digested via
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OP_digest_update() calls.
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The parameter provides the master secret value to be added to the digest.
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The digest implementation should calculate the complete digest as per RFC6101
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section 5.6.8.
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The next call after setting this parameter should be OP_digest_final().
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=back
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=head1 SEE ALSO
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L<EVP_MD_CTX_set_params(3)>, L<provider-digest(7)>,
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L<OSSL_PROVIDER-FIPS(7)>, L<OSSL_PROVIDER-default(7)>
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=head1 COPYRIGHT
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Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
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Licensed under the Apache License 2.0 (the "License"). You may not use
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this file except in compliance with the License. You can obtain a copy
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in the file LICENSE in the source distribution or at
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L<https://www.openssl.org/source/license.html>.
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=cut
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