| lh | 9ed821d | 2023-04-07 01:36:19 -0700 | [diff] [blame^] | 1 | /* |
| 2 | * Copyright 2002-2016 The OpenSSL Project Authors. All Rights Reserved. |
| 3 | * |
| 4 | * Licensed under the OpenSSL license (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 | |
| 22 | void OPENSSL_cleanse(void *ptr, size_t len) |
| 23 | { |
| 24 | memset_func(ptr, 0, len); |
| 25 | } |