EVP_blake2b512, EVP_blake2s256 - BLAKE2 For EVP
#include <openssl/evp.h> const EVP_MD *EVP_blake2b512(void); const EVP_MD *EVP_blake2s256(void);
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.
Developers should be aware of the negative performance implications of calling these functions multiple times and should consider using EVP_MD_fetch(3) instead. See "Performance" in crypto(7) for further information.
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.
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.
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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.