Mercurial > dropbear

annotate libtomcrypt/src/pk/ecc/ecc_sizes.c @ 1422:4cebe907dfd0

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limit input size
author Matt Johnston <matt@ucc.asn.au>
date Thu, 25 May 2017 22:21:23 +0800
parents 0cbe8f6dbf9e
children f849a5ca2efc
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382
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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.com
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10 */
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11
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12 /* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b
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13 *
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14 * All curves taken from NIST recommendation paper of July 1999
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15 * Available at http://csrc.nist.gov/cryptval/dss.htm
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16 */
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17 #include "tomcrypt.h"
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18
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19 /**
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20 @file ecc_sizes.c
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21 ECC Crypto, Tom St Denis
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22 */
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23
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24 #ifdef MECC
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25
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26 void ecc_sizes(int *low, int *high)
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27 {
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28 int i;
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29 LTC_ARGCHKVD(low != NULL);
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30 LTC_ARGCHKVD(high != NULL);
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31
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32 *low = INT_MAX;
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33 *high = 0;
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34 for (i = 0; ltc_ecc_sets[i].size != 0; i++) {
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35 if (ltc_ecc_sets[i].size < *low) {
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36 *low = ltc_ecc_sets[i].size;
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37 }
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38 if (ltc_ecc_sets[i].size > *high) {
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39 *high = ltc_ecc_sets[i].size;
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40 }
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41 }
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42 }
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43
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44 #endif
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45 /* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ecc_sizes.c,v $ */
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46 /* $Revision: 1.4 $ */
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47 /* $Date: 2006/06/09 01:38:14 $ */
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48