1 /* 2 * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved. 3 * 4 * Licensed under the Apache License 2.0 (the "License"). You may not use 5 * this file except in compliance with the License. You can obtain a copy 6 * in the file LICENSE in the source distribution or at 7 * https://www.openssl.org/source/license.html 8 */ 9 10 #include <string.h> 11 #include <openssl/crypto.h> 12 13 /* 14 * Pointer to memset is volatile so that compiler must de-reference 15 * the pointer and can't assume that it points to any function in 16 * particular (such as memset, which it then might further "optimize") 17 */ 18 typedef void *(*memset_t)(void *, int, size_t); 19 20 static volatile memset_t memset_func = memset; 21 OPENSSL_cleanse(void * ptr,size_t len)22void OPENSSL_cleanse(void *ptr, size_t len) 23 { 24 memset_func(ptr, 0, len); 25 } 26
