EVP_sha224, EVP_sha256, EVP_sha512_224, EVP_sha512_256, EVP_sha384, EVP_sha512 -
SHA-2 For EVP
#include <openssl/evp.h>
const EVP_MD *EVP_sha224(void);
const EVP_MD *EVP_sha256(void);
const EVP_MD *EVP_sha512_224(void);
const EVP_MD *EVP_sha512_256(void);
const EVP_MD *EVP_sha384(void);
const EVP_MD *EVP_sha512(void);
SHA-2 (Secure Hash Algorithm 2) is a family of cryptographic hash functions
standardized in NIST FIPS 180-4, first published in 2001.
-
EVP_sha224(), EVP_sha256(), EVP_sha512_224,
EVP_sha512_256, EVP_sha384(), EVP_sha512()
- The SHA-2 SHA-224, SHA-256, SHA-512/224, SHA512/256,
SHA-384 and SHA-512 algorithms, which generate 224, 256, 224, 256, 384 and
512 bits respectively of output from a given input.
The two algorithms: SHA-512/224 and SHA512/256 are truncated forms of the
SHA-512 algorithm. They are distinct from SHA-224 and SHA-256 even though
their outputs are of the same size.
Developers should be aware of the negative performance implications of calling
these functions multiple times and should consider using
EVP_MD_fetch(3) with
EVP_MD-SHA2(7)instead. See
"Performance" in
crypto(7) for further information.
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 180-4.
evp(7),
EVP_DigestInit(3)
Copyright 2017-2023 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>.