5 EVP_MD-SHA1 - The SHA1 EVP_MD implementation
9 Support for computing SHA1 digests through the B<EVP_MD> API.
13 This implementation is available with the FIPS provider as well as the
14 default provider, and is identified with the names "SHA1" and "SHA-1".
16 =head2 Gettable Parameters
18 This implementation supports the common gettable parameters described
19 in L<EVP_MD-common(7)>.
21 =head2 Settable Context Parameters
23 This implementation supports the following L<OSSL_PARAM(3)> entries,
24 settable for an B<EVP_MD_CTX> with L<EVP_MD_CTX_set_params(3)>:
28 =item "ssl3-ms" (B<OSSL_DIGEST_PARAM_SSL3_MS>) <octet string>
30 This parameter is set by libssl in order to calculate a signature hash for an
31 SSLv3 CertificateVerify message as per RFC6101.
32 It is only set after all handshake messages have already been digested via
33 OP_digest_update() calls.
34 The parameter provides the master secret value to be added to the digest.
35 The digest implementation should calculate the complete digest as per RFC6101
37 The next call after setting this parameter should be OP_digest_final().
43 L<EVP_MD_CTX_set_params(3)>, L<provider-digest(7)>,
44 L<OSSL_PROVIDER-FIPS(7)>, L<OSSL_PROVIDER-default(7)>
48 Copyright 2020 The OpenSSL Project Authors. All Rights Reserved.
50 Licensed under the Apache License 2.0 (the "License"). You may not use
51 this file except in compliance with the License. You can obtain a copy
52 in the file LICENSE in the source distribution or at
53 L<https://www.openssl.org/source/license.html>.