CRYPTO_MEMCMP(3ossl) OpenSSL CRYPTO_MEMCMP(3ossl)
NAME
CRYPTO_memcmp - Constant time memory comparison
SYNOPSIS
#include <openssl/crypto.h>
int CRYPTO_memcmp(const void *a, const void *b, size_t len);
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
CRYPTO_memcmp(3) returns 0 if the memory regions are equal and nonzero
otherwise.
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
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>.
3.3.2 2024-09-04 CRYPTO_MEMCMP(3ossl)
openssl 3.3.2 - Generated Sat Sep 7 16:33:40 CDT 2024