11 #include <openssl/evp.h>
13 const EVP_MD *EVP_blake2b512(void);
14 const EVP_MD *EVP_blake2s256(void);
18 BLAKE2 is an improved version of BLAKE, which was submitted to the NIST SHA-3
19 algorithm competition. The BLAKE2s and BLAKE2b algorithms are described in
24 =item EVP_blake2s256()
26 The BLAKE2s algorithm that produces a 256-bit output from a given input.
28 =item EVP_blake2b512()
30 The BLAKE2b algorithm that produces a 512-bit output from a given input.
36 Developers should be aware of the negative performance implications of
37 calling these functions multiple times and should consider using
38 L<EVP_MD_fetch(3)> with L<EVP_MD-BLAKE2(7)> instead.
39 See L<crypto(7)/Performance> for further information.
41 Both algorithms support a variable-length digest,
42 but this is only available through L<EVP_MD-BLAKE2(7)>.
46 These functions return a B<EVP_MD> structure that contains the
47 implementation of the message digest. See L<EVP_MD_meth_new(3)> for
48 details of the B<EVP_MD> structure.
61 Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved.
63 Licensed under the Apache License 2.0 (the "License"). You may not use
64 this file except in compliance with the License. You can obtain a copy
65 in the file LICENSE in the source distribution or at
66 L<https://www.openssl.org/source/license.html>.