Mercurial > dropbear

annotate libtomcrypt/src/pk/ecc/ecc_get_size.c @ 998:3a32727986ee

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Allow configure with libtomcrypt/libtommath directories missing if using bundled libraries
author Elan Ruusamäe <glen@delfi.ee>
date Wed, 28 Jan 2015 22:05:24 +0800
parents 0cbe8f6dbf9e
children f849a5ca2efc
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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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_get_size.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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26 /**
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27 Get the size of an ECC key
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28 @param key The key to get the size of
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29 @return The size (octets) of the key or INT_MAX on error
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30 */
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31 int ecc_get_size(ecc_key *key)
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32 {
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33 LTC_ARGCHK(key != NULL);
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34 if (ltc_ecc_is_valid_idx(key->idx))
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35 return key->dp->size;
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36 else
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37 return INT_MAX; /* large value known to cause it to fail when passed to ecc_make_key() */
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38 }
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39
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40 #endif
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41 /* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ecc_get_size.c,v $ */
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42 /* $Revision: 1.4 $ */
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43 /* $Date: 2006/11/21 00:10:18 $ */
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