1 /* 2 * Copyright (c) 2001-2007, Tom St Denis 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright notice, 12 * this list of conditions and the following disclaimer in the documentation 13 * and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 16 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 17 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE 19 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 20 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 21 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 22 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 23 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 24 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 * POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 /* LibTomCrypt, modular cryptographic library -- Tom St Denis 29 * 30 * LibTomCrypt is a library that provides various cryptographic 31 * algorithms in a highly modular and flexible manner. 32 * 33 * The library is free for all purposes without any express 34 * guarantee it works. 35 * 36 * Tom St Denis, tomstdenis@gmail.com, http://libtom.org 37 */ 38 #include "tomcrypt.h" 39 40 /** 41 @file zeromem.c 42 Zero a block of memory, Tom St Denis 43 */ 44 45 /** 46 Zero a block of memory 47 @param out The destination of the area to zero 48 @param outlen The length of the area to zero (octets) 49 */ 50 void zeromem(volatile void *out, size_t outlen) 51 { 52 volatile char *mem = out; 53 LTC_ARGCHKVD(out != NULL); 54 while (outlen-- > 0) { 55 *mem++ = 0; 56 } 57 } 58 59 /* $Source: /cvs/libtom/libtomcrypt/src/misc/zeromem.c,v $ */ 60 /* $Revision: 1.7 $ */ 61 /* $Date: 2006/12/28 01:27:24 $ */ 62