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EVP_SHA3_224(3ossl) OpenSSL EVP_SHA3_224(3ossl)

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

 #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);

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.

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.

NIST FIPS 202.

evp(7), EVP_DigestInit(3)

Copyright 2017-2022 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>.

2022-05-03 3.0.3

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