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Title "EVP_SHA224 3" For nroff, turn off justification. Always turn off hyphenation; it makes
way too many mistakes in technical documents.
EVP_sha224, EVP_sha256, EVP_sha512_224, EVP_sha512_256, EVP_sha384, EVP_sha512 \- SHA-2 For EVP Header "SYNOPSIS" .Vb 1 #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); .Ve Header "DESCRIPTION" \s-1SHA-2\s0 (Secure Hash Algorithm 2) is a family of cryptographic hash functions standardized in \s-1NIST FIPS 180-4,\s0 first published in 2001. Item "EVP_sha224(), EVP_sha256(), EVP_sha512_224, EVP_sha512_256, EVP_sha384(), EVP_sha512()" The \s-1SHA-2 SHA-224, SHA-256, SHA-512/224, SHA512/256, SHA-384\s0 and \s-1SHA-512\s0 algorithms, which generate 224, 256, 224, 256, 384 and 512 bits respectively of output from a given input. .Sp The two algorithms: \s-1SHA-512/224\s0 and \s-1SHA512/256\s0 are truncated forms of the \s-1SHA-512\s0 algorithm. They are distinct from \s-1SHA-224\s0 and \s-1SHA-256\s0 even though their outputs are of the same size. Header "NOTES" Developers should be aware of the negative performance implications of calling these functions multiple times and should consider using \fBEVP_MD_fetch\|(3) instead. See \*(L"Performance\*(R" in crypto\|(7) for further information. Header "RETURN VALUES" These functions return a \s-1EVP_MD\s0 structure that contains the implementation of the message digest. See EVP_MD_meth_new\|(3) for details of the \s-1EVP_MD\s0 structure. Header "CONFORMING TO" \s-1NIST FIPS 180-4.\s0 Header "SEE ALSO" \fBevp\|(7), \fBEVP_DigestInit\|(3) Header "COPYRIGHT" Copyright 2017-2023 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the Apache License 2.0 (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.