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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, tomstdenis@gmail.com, http://libtom.org
*/
/* 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 ltc_ecc_is_valid_idx.c
ECC Crypto, Tom St Denis
*/
#ifdef LTC_MECC
/** Returns whether an ECC idx is valid or not
@param n The idx number to check
@return 1 if valid, 0 if not
*/
int ltc_ecc_is_valid_idx(int n)
{
int x;
for (x = 0; ltc_ecc_sets[x].size != 0; x++);
/* -1 is a valid index --- indicating that the domain params were supplied by the user */
if ((n >= -1) && (n < x)) {
return 1;
}
return 0;
}
#endif
/* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ltc_ecc_is_valid_idx.c,v $ */
/* $Revision: 1.7 $ */
/* $Date: 2007/05/12 14:32:35 $ */
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