1EVP_BLAKE2B512(3)                   OpenSSL                  EVP_BLAKE2B512(3)
2
3
4

NAME

6       EVP_blake2b512, EVP_blake2s256 - BLAKE2 For EVP
7

SYNOPSIS

9        #include <openssl/evp.h>
10
11        const EVP_MD *EVP_blake2b512(void);
12        const EVP_MD *EVP_blake2s256(void);
13

DESCRIPTION

15       BLAKE2 is an improved version of BLAKE, which was submitted to the NIST
16       SHA-3 algorithm competition. The BLAKE2s and BLAKE2b algorithms are
17       described in RFC 7693.
18
19       EVP_blake2s256()
20           The BLAKE2s algorithm that produces a 256-bit output from a given
21           input.
22
23       EVP_blake2b512()
24           The BLAKE2b algorithm that produces a 512-bit output from a given
25           input.
26

RETURN VALUES

28       These functions return a EVP_MD structure that contains the
29       implementation of the symmetric cipher. See EVP_MD_meth_new(3) for
30       details of the EVP_MD structure.
31

CONFORMING TO

33       RFC 7693.
34

NOTES

36       While the BLAKE2b and BLAKE2s algorithms supports a variable length
37       digest, this implementation outputs a digest of a fixed length (the
38       maximum length supported), which is 512-bits for BLAKE2b and 256-bits
39       for BLAKE2s.
40

SEE ALSO

42       evp(7), EVP_DigestInit(3)
43

45       Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
46
47       Licensed under the OpenSSL license (the "License").  You may not use
48       this file except in compliance with the License.  You can obtain a copy
49       in the file LICENSE in the source distribution or at
50       <https://www.openssl.org/source/license.html>.
51
52
53
541.1.1i                            2021-07-22                 EVP_BLAKE2B512(3)
Impressum