EVP_SHA3_224

Section: OpenSSL (3)
Updated: 2019-10-03
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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>.


 

Index

NAME
SYNOPSIS
DESCRIPTION
RETURN VALUES
CONFORMING TO
SEE ALSO
COPYRIGHT
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