summaryrefslogtreecommitdiffhomepage
path: root/libtomcrypt/src/pk/ecc/ecc_sizes.c
blob: b02a9f9eaa98029bb1b49bf7c9a2e317d8932c81 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
/* 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 ecc_sizes.c
  ECC Crypto, Tom St Denis
*/  

#ifdef LTC_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
/* $Source$ */
/* $Revision$ */
/* $Date$ */