Mercurial > dropbear

comparison src/pk/ecc/ecc_get_size.c @ 381:999a5eb4ed10 libtomcrypt-dropbear

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propagate from branch 'au.asn.ucc.matt.ltc.orig' (head 52840647ac7f5c707c3bd158d119a15734a7ef28) to branch 'au.asn.ucc.matt.ltc.dropbear' (head 20dccfc09627970a312d77fb41dc2970b62689c3)
author Matt Johnston <matt@ucc.asn.au>
date Thu, 11 Jan 2007 02:39:21 +0000
parents d5faf4814ddb
children
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281:997e6f7dc01e 381:999a5eb4ed10
1 /* LibTomCrypt, modular cryptographic library -- Tom St Denis
2 *
3 * LibTomCrypt is a library that provides various cryptographic
4 * algorithms in a highly modular and flexible manner.
5 *
6 * The library is free for all purposes without any express
7 * guarantee it works.
8 *
9 * Tom St Denis, [email protected], http://libtomcrypt.com
10 */
11
12 /* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b
13 *
14 * All curves taken from NIST recommendation paper of July 1999
15 * Available at http://csrc.nist.gov/cryptval/dss.htm
16 */
17 #include "tomcrypt.h"
18
19 /**
20 @file ecc_get_size.c
21 ECC Crypto, Tom St Denis
22 */
23
24 #ifdef MECC
25
26 /**
27 Get the size of an ECC key
28 @param key The key to get the size of
29 @return The size (octets) of the key or INT_MAX on error
30 */
31 int ecc_get_size(ecc_key *key)
32 {
33 LTC_ARGCHK(key != NULL);
34 if (ltc_ecc_is_valid_idx(key->idx))
35 return key->dp->size;
36 else
37 return INT_MAX; /* large value known to cause it to fail when passed to ecc_make_key() */
38 }
39
40 #endif
41 /* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ecc_get_size.c,v $ */
42 /* $Revision: 1.4 $ */
43 /* $Date: 2006/11/21 00:10:18 $ */
44