26 lines
770 B
C
26 lines
770 B
C
|
/*
|
||
|
|
* Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved.
|
||
|
|
*
|
||
|
|
* Licensed under the OpenSSL license (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
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <string.h>
|
||
|
|
#include <openssl/crypto.h>
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Pointer to memset is volatile so that compiler must de-reference
|
||
|
|
* the pointer and can't assume that it points to any function in
|
||
|
|
* particular (such as memset, which it then might further "optimize")
|
||
|
|
*/
|
||
|
|
typedef void *(*memset_t)(void *, int, size_t);
|
||
|
|
|
||
|
|
static volatile memset_t memset_func = memset;
|
||
|
|
|
||
|
|
void OPENSSL_cleanse(void *ptr, size_t len)
|
||
|
|
{
|
||
|
|
memset_func(ptr, 0, len);
|
||
|
|
}
|