EVP_SHA3_224
Section: OpenSSL (3)
Updated: 2021-03-26
Page Index
NAME
EVP_sha3_224, EVP_sha3_256, EVP_sha3_384, EVP_sha3_512, EVP_shake128, EVP_shake256 - SHA-3 For EVP
SYNOPSIS
#include <openssl/evp.h>
const EVP_MD *EVP_sha3_224(void);
const EVP_MD *EVP_sha3_256(void);
const EVP_MD *EVP_sha3_384(void);
const EVP_MD *EVP_sha3_512(void);
const EVP_MD *EVP_shake128(void);
const EVP_MD *EVP_shake256(void);
DESCRIPTION
SHA-3 (Secure Hash Algorithm 3) is a family of cryptographic hash functions
standardized in
NIST FIPS 202, first published in 2015. It is based on the
Keccak algorithm.
- EVP_sha3_224(), EVP_sha3_256(), EVP_sha3_384(), EVP_sha3_512()
-
The SHA-3 SHA-3-224, SHA-3-256, SHA-3-384, and SHA-3-512 algorithms
respectively. They produce 224, 256, 384 and 512 bits of output from a given
input.
- EVP_shake128(), EVP_shake256()
-
The SHAKE-128 and SHAKE-256 Extendable Output Functions (XOF) that can generate
a variable hash length.
Specifically, EVP_shake128 provides an overall security of 128 bits, while
EVP_shake256 provides that of 256 bits.
RETURN VALUES
These functions return a
EVP_MD structure that contains the
implementation of the symmetric cipher. See
EVP_MD_meth_new(3) for
details of the
EVP_MD structure.
CONFORMING TO
NIST FIPS 202.
SEE ALSO
evp(7),
EVP_DigestInit(3)
COPYRIGHT
Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (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>.