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.
The BLAKE2s algorithm that produces a 256-bit output from a given input.
The BLAKE2b algorithm that produces a 512-bit output from a given input.
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.