EVP_SHA1

Section: OpenSSL (3SSL)
Updated: 2024-03-03
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NAME

EVP_sha1 - SHA-1 For EVP

SYNOPSIS

 #include <openssl/evp.h>

 const EVP_MD *EVP_sha1(void);

DESCRIPTION

SHA-1 (Secure Hash Algorithm 1) is a cryptographic hash function standardized in NIST FIPS 180-4. The algorithm was designed by the United States National Security Agency and initially published in 1995.

EVP_sha1(): The SHA-1 algorithm which produces a 160-bit output from a given input.

NOTES

Developers should be aware of the negative performance implications of calling this function multiple times and should consider using EVP_MD_fetch(3) with EVP_MD-SHA1(7) instead. See ``Performance'' in crypto(7) for further information.

RETURN VALUES

These functions return a EVP_MD structure that contains the implementation of the message digest. See EVP_MD_meth_new(3) for details of the EVP_MD structure.

CONFORMING TO

NIST FIPS 180-4.

COPYRIGHT

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>.

This document was created by man2html, using the manual pages.
Time: 04:13:51 GMT, April 26, 2024