Updated: 2022/Sep/29

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EVP_MD-SHA1(7)                      OpenSSL                     EVP_MD-SHA1(7)



NAME
       EVP_MD-SHA1 - The SHA1 EVP_MD implementation

DESCRIPTION
       Support for computing SHA1 digests through the EVP_MD API.

   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".

   Gettable Parameters
       This implementation supports the common gettable parameters described
       in EVP_MD-common(7).

   Settable Context Parameters
       This implementation supports the following OSSL_PARAM(3) entries,
       settable for an EVP_MD_CTX with EVP_MD_CTX_set_params(3):

       "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 OP_digest_update() 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
           OP_digest_final().

SEE ALSO
       EVP_MD_CTX_set_params(3), provider-digest(7), OSSL_PROVIDER-FIPS(7),
       OSSL_PROVIDER-default(7)

COPYRIGHT
       Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.

       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>.



3.0.12                            2023-05-07                    EVP_MD-SHA1(7)