15 #include <openssl/evp.h>
17 const EVP_MD *EVP_sha3_224(void);
18 const EVP_MD *EVP_sha3_256(void);
19 const EVP_MD *EVP_sha3_384(void);
20 const EVP_MD *EVP_sha3_512(void);
22 const EVP_MD *EVP_shake128(void);
23 const EVP_MD *EVP_shake256(void);
27 SHA-3 (Secure Hash Algorithm 3) is a family of cryptographic hash functions
28 standardized in NIST FIPS 202, first published in 2015. It is based on the
38 The SHA-3 SHA-3-224, SHA-3-256, SHA-3-384, and SHA-3-512 algorithms
39 respectively. They produce 224, 256, 384 and 512 bits of output from a given
45 The SHAKE-128 and SHAKE-256 Extendable Output Functions (XOF) that can generate
46 a variable hash length.
48 Specifically, B<EVP_shake128> provides an overall security of 128 bits, while
49 B<EVP_shake256> provides that of 256 bits.
55 Developers should be aware of the negative performance implications of
56 calling these functions multiple times and should consider using
57 L<EVP_MD_fetch(3)> with L<EVP_MD-SHA3(7)> or L<EVP_MD-SHAKE(7)> instead.
58 See L<crypto(7)/Performance> for further information.
62 These functions return a B<EVP_MD> structure that contains the
63 implementation of the message digest. See L<EVP_MD_meth_new(3)> for
64 details of the B<EVP_MD> structure.
77 Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved.
79 Licensed under the Apache License 2.0 (the "License"). You may not use
80 this file except in compliance with the License. You can obtain a copy
81 in the file LICENSE in the source distribution or at
82 L<https://www.openssl.org/source/license.html>.