Mercurial > dropbear
view libtomcrypt/src/pk/ecc/ecc_sizes.c @ 817:a625f9e135a4
Constant time memcmp for the hmac and password crypt
author | Matt Johnston <matt@ucc.asn.au> |
---|---|
date | Thu, 03 Oct 2013 22:25:30 +0800 |
parents | 0cbe8f6dbf9e |
children | f849a5ca2efc |
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/* LibTomCrypt, modular cryptographic library -- Tom St Denis * * LibTomCrypt is a library that provides various cryptographic * algorithms in a highly modular and flexible manner. * * The library is free for all purposes without any express * guarantee it works. * * Tom St Denis, [email protected], http://libtomcrypt.com */ /* Implements ECC over Z/pZ for curve y^2 = x^3 - 3x + b * * All curves taken from NIST recommendation paper of July 1999 * Available at http://csrc.nist.gov/cryptval/dss.htm */ #include "tomcrypt.h" /** @file ecc_sizes.c ECC Crypto, Tom St Denis */ #ifdef MECC void ecc_sizes(int *low, int *high) { int i; LTC_ARGCHKVD(low != NULL); LTC_ARGCHKVD(high != NULL); *low = INT_MAX; *high = 0; for (i = 0; ltc_ecc_sets[i].size != 0; i++) { if (ltc_ecc_sets[i].size < *low) { *low = ltc_ecc_sets[i].size; } if (ltc_ecc_sets[i].size > *high) { *high = ltc_ecc_sets[i].size; } } } #endif /* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ecc_sizes.c,v $ */ /* $Revision: 1.4 $ */ /* $Date: 2006/06/09 01:38:14 $ */