1EVP_SHA224(3) OpenSSL EVP_SHA224(3)
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6 EVP_sha224, EVP_sha256, EVP_sha512_224, EVP_sha512_256, EVP_sha384,
7 EVP_sha512 - SHA-2 For EVP
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10 #include <openssl/evp.h>
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12 const EVP_MD *EVP_sha224(void);
13 const EVP_MD *EVP_sha256(void);
14 const EVP_MD *EVP_sha512_224(void);
15 const EVP_MD *EVP_sha512_256(void);
16 const EVP_MD *EVP_sha384(void);
17 const EVP_MD *EVP_sha512(void);
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20 SHA-2 (Secure Hash Algorithm 2) is a family of cryptographic hash
21 functions standardized in NIST FIPS 180-4, first published in 2001.
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23 EVP_sha224(), EVP_sha256(), EVP_sha512_224, EVP_sha512_256,
24 EVP_sha384(), EVP_sha512()
25 The SHA-2 SHA-224, SHA-256, SHA-512/224, SHA512/256, SHA-384 and
26 SHA-512 algorithms, which generate 224, 256, 224, 256, 384 and 512
27 bits respectively of output from a given input.
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29 The two algorithms: SHA-512/224 and SHA512/256 are truncated forms
30 of the SHA-512 algorithm. They are distinct from SHA-224 and
31 SHA-256 even though their outputs are of the same size.
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34 These functions return a EVP_MD structure that contains the
35 implementation of the symmetric cipher. See EVP_MD_meth_new(3) for
36 details of the EVP_MD structure.
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39 NIST FIPS 180-4.
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42 evp(7), EVP_DigestInit(3)
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45 Copyright 2017-2018 The OpenSSL Project Authors. All Rights Reserved.
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47 Licensed under the OpenSSL license (the "License"). You may not use
48 this file except in compliance with the License. You can obtain a copy
49 in the file LICENSE in the source distribution or at
50 <https://www.openssl.org/source/license.html>.
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541.1.1k 2021-03-26 EVP_SHA224(3)