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annotate libtomcrypt/src/misc/zeromem.c @ 409:0e69e948caba

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Add comments about requiring keysize <= 2*SHA1_HASH_SIZE
author Matt Johnston <matt@ucc.asn.au>
date Sun, 04 Feb 2007 10:31:48 +0000
parents 1b9e69c058d2
children 0cbe8f6dbf9e
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1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
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2 *
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3 * LibTomCrypt is a library that provides various cryptographic
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4 * algorithms in a highly modular and flexible manner.
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5 *
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6 * The library is free for all purposes without any express
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7 * guarantee it works.
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8 *
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9 * Tom St Denis, [email protected], http://libtomcrypt.org
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10 */
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11 #include "tomcrypt.h"
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13 /**
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14 @file zeromem.c
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15 Zero a block of memory, Tom St Denis
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16 */
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18 /**
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19 Zero a block of memory
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20 @param out The destination of the area to zero
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21 @param outlen The length of the area to zero (octets)
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22 */
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23 void zeromem(void *out, size_t outlen)
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24 {
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25 unsigned char *mem = out;
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26 LTC_ARGCHK(out != NULL);
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27 while (outlen-- > 0) {
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28 *mem++ = 0;
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29 }
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30 }
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32 /* $Source: /cvs/libtom/libtomcrypt/src/misc/zeromem.c,v $ */
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33 /* $Revision: 1.4 $ */
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34 /* $Date: 2005/05/05 14:35:59 $ */