13 #include <openssl/evp.h>
15 const EVP_MD *EVP_sha224(void);
16 const EVP_MD *EVP_sha256(void);
17 const EVP_MD *EVP_sha384(void);
18 const EVP_MD *EVP_sha512(void);
22 SHA-2 (Secure Hash Algorithm 2) is a family of cryptographic hash functions
23 standardized in NIST FIPS 180-4, first published in 2001.
32 The SHA-2 SHA-224, SHA-256, SHA-384, SHA-512 algorithms respectively, which
33 generates 224, 256, 384 and 512 bits of output from a given input.
40 These functions return a B<EVP_MD> structure that contains the
41 implementation of the symmetric cipher. See L<EVP_MD_meth_new(3)> for
42 details of the B<EVP_MD> structure.
55 Copyright 2017 The OpenSSL Project Authors. All Rights Reserved.
57 Licensed under the OpenSSL license (the "License"). You may not use
58 this file except in compliance with the License. You can obtain a copy
59 in the file LICENSE in the source distribution or at
60 L<https://www.openssl.org/source/license.html>.