1EVP_SHA3_224(3ossl)                 OpenSSL                EVP_SHA3_224(3ossl)
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NAME

6       EVP_sha3_224, EVP_sha3_256, EVP_sha3_384, EVP_sha3_512, EVP_shake128,
7       EVP_shake256 - SHA-3 For EVP
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SYNOPSIS

10        #include <openssl/evp.h>
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12        const EVP_MD *EVP_sha3_224(void);
13        const EVP_MD *EVP_sha3_256(void);
14        const EVP_MD *EVP_sha3_384(void);
15        const EVP_MD *EVP_sha3_512(void);
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17        const EVP_MD *EVP_shake128(void);
18        const EVP_MD *EVP_shake256(void);
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DESCRIPTION

21       SHA-3 (Secure Hash Algorithm 3) is a family of cryptographic hash
22       functions standardized in NIST FIPS 202, first published in 2015. It is
23       based on the Keccak algorithm.
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25       EVP_sha3_224(), EVP_sha3_256(), EVP_sha3_384(), EVP_sha3_512()
26           The SHA-3 SHA-3-224, SHA-3-256, SHA-3-384, and SHA-3-512 algorithms
27           respectively. They produce 224, 256, 384 and 512 bits of output
28           from a given input.
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30       EVP_shake128(), EVP_shake256()
31           The SHAKE-128 and SHAKE-256 Extendable Output Functions (XOF) that
32           can generate a variable hash length.
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34           Specifically, EVP_shake128 provides an overall security of 128
35           bits, while EVP_shake256 provides that of 256 bits.
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RETURN VALUES

38       These functions return a EVP_MD structure that contains the
39       implementation of the message digest. See EVP_MD_meth_new(3) for
40       details of the EVP_MD structure.
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CONFORMING TO

43       NIST FIPS 202.
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SEE ALSO

46       evp(7), EVP_DigestInit(3)
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49       Copyright 2017-2022 The OpenSSL Project Authors. All Rights Reserved.
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51       Licensed under the Apache License 2.0 (the "License").  You may not use
52       this file except in compliance with the License.  You can obtain a copy
53       in the file LICENSE in the source distribution or at
54       <https://www.openssl.org/source/license.html>.
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583.0.5                             2022-11-01               EVP_SHA3_224(3ossl)
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