EVP_BLAKE2B512
Section: OpenSSL (3)
Updated: 2021-03-26
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NAME
EVP_blake2b512, EVP_blake2s256 - BLAKE2 For EVP
SYNOPSIS
#include <openssl/evp.h>
const EVP_MD *EVP_blake2b512(void);
const EVP_MD *EVP_blake2s256(void);
DESCRIPTION
BLAKE2 is an improved version of
BLAKE, which was submitted to the
NIST SHA-3
algorithm competition. The BLAKE2s and BLAKE2b algorithms are described in
RFC 7693.
- EVP_blake2s256()
-
The BLAKE2s algorithm that produces a 256-bit output from a given input.
- EVP_blake2b512()
-
The BLAKE2b algorithm that produces a 512-bit output from a given input.
RETURN VALUES
These functions return a
EVP_MD structure that contains the
implementation of the symmetric cipher. See
EVP_MD_meth_new(3) for
details of the
EVP_MD structure.
CONFORMING TO
RFC 7693.
NOTES
While the BLAKE2b and BLAKE2s algorithms supports a variable length digest,
this implementation outputs a digest of a fixed length (the maximum length
supported), which is 512-bits for BLAKE2b and 256-bits for BLAKE2s.
SEE ALSO
evp(7),
EVP_DigestInit(3)
COPYRIGHT
Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (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>.