$NetBSD: EVP_blake2b512.3,v 1.8 2024/09/08 13:08:24 christos Exp $
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Title "EVP_blake2b512 3"
way too many mistakes in technical documents.
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Automatically generated by Pod::Man 5.01 (Pod::Simple 3.43)
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. ds C` "" . ds C' "" 'br\} . ds C` . ds C' 'br\}
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Title "EVP_blake2b512 3"
EVP_blake2b512 3 2024-09-03 3.0.15 OpenSSL
For nroff, turn off justification. Always turn off hyphenation; it makesway too many mistakes in technical documents.
NAME
EVP_blake2b512,
EVP_blake2s256
\- BLAKE2 For EVP
SYNOPSIS
Header "SYNOPSIS" .Vb 1
#include <openssl/evp.h>
\&
const EVP_MD *EVP_blake2b512(void);
const EVP_MD *EVP_blake2s256(void);
.Ve
DESCRIPTION
Header "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() 4
Item "EVP_blake2s256()" The BLAKE2s algorithm that produces a 256-bit output from a given input.
EVP_blake2b512() 4
Item "EVP_blake2b512()" The BLAKE2b algorithm that produces a 512-bit output from a given input.
NOTES
Header "NOTES" Developers should be aware of the negative performance implications of
calling these functions multiple times and should consider using
\fBEVP_MD_fetch\|(3) with EVP_MD-BLAKE2\|(7) 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.
"RETURN VALUES"
Header "RETURN VALUES" 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.
"CONFORMING TO"
Header "CONFORMING TO" RFC 7693.
"SEE ALSO"
Header "SEE ALSO" \fBevp\|(7),
\fBEVP_DigestInit\|(3)
COPYRIGHT
Header "COPYRIGHT" Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved.
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>.