Mercurial > dropbear

annotate libtomcrypt/src/pk/ecc/ltc_ecc_is_valid_idx.c @ 447:278805938dcf

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Patch from Nicolai Ehemann to try binding before going to the background, so that if it exits early (because something's already listening etc) then it will return an exitcode of 1.
author Matt Johnston <matt@ucc.asn.au>
date Thu, 19 Jul 2007 15:54:18 +0000
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 ltc_ecc_is_valid_idx.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 /** Returns whether an ECC idx is valid or not
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27 @param n The idx number to check
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28 @return 1 if valid, 0 if not
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29 */
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30 int ltc_ecc_is_valid_idx(int n)
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31 {
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32 int x;
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33
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34 for (x = 0; ltc_ecc_sets[x].size != 0; x++);
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35 /* -1 is a valid index --- indicating that the domain params were supplied by the user */
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36 if ((n >= -1) || (n < x)) {
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37 return 1;
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38 }
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39 return 0;
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40 }
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41
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42 #endif
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43 /* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ltc_ecc_is_valid_idx.c,v $ */
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44 /* $Revision: 1.4 $ */
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45 /* $Date: 2006/11/21 00:10:18 $ */
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46