$NetBSD: CRYPTO_memcmp.3,v 1.5 2024/09/08 13:08:18 christos Exp $
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Title "CRYPTO_memcmp 3"
way too many mistakes in technical documents.
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Title "CRYPTO_memcmp 3"
CRYPTO_memcmp 3 2024-09-03 3.0.15 OpenSSL
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NAME
CRYPTO_memcmp - Constant time memory comparison
SYNOPSIS
Header "SYNOPSIS" .Vb 1
#include <openssl/crypto.h>
\&
int CRYPTO_memcmp(const void *a, const void *b, size_t len);
.Ve
DESCRIPTION
Header "DESCRIPTION" The CRYPTO_memcmp function compares the len bytes pointed to by a and b
for equality.
It takes an amount of time dependent on len, but independent of the
contents of the memory regions pointed to by a and b.
"RETURN VALUES"
Header "RETURN VALUES" \fBCRYPTO_memcmp() returns 0 if the memory regions are equal and nonzero
otherwise.
NOTES
Header "NOTES" Unlike memcmp\|(2), this function cannot be used to order the two memory regions
as the return value when they differ is undefined, other than being nonzero.
COPYRIGHT
Header "COPYRIGHT" Copyright 2019 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>.