|
380
|
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 ltc_ecc_points.c |
|
|
21 ECC Crypto, Tom St Denis |
|
|
22 */ |
|
|
23 |
|
|
24 #ifdef MECC |
|
|
25 |
|
|
26 /** |
|
|
27 Allocate a new ECC point |
|
|
28 @return A newly allocated point or NULL on error |
|
|
29 */ |
|
|
30 ecc_point *ltc_ecc_new_point(void) |
|
|
31 { |
|
|
32 ecc_point *p; |
|
|
33 p = XCALLOC(1, sizeof(*p)); |
|
|
34 if (p == NULL) { |
|
|
35 return NULL; |
|
|
36 } |
|
|
37 if (mp_init_multi(&p->x, &p->y, &p->z, NULL) != CRYPT_OK) { |
|
|
38 XFREE(p); |
|
|
39 return NULL; |
|
|
40 } |
|
|
41 return p; |
|
|
42 } |
|
|
43 |
|
|
44 /** Free an ECC point from memory |
|
|
45 @param p The point to free |
|
|
46 */ |
|
|
47 void ltc_ecc_del_point(ecc_point *p) |
|
|
48 { |
|
|
49 /* prevents free'ing null arguments */ |
|
|
50 if (p != NULL) { |
|
|
51 mp_clear_multi(p->x, p->y, p->z, NULL); /* note: p->z may be NULL but that's ok with this function anyways */ |
|
|
52 XFREE(p); |
|
|
53 } |
|
|
54 } |
|
|
55 |
|
|
56 #endif |
|
|
57 /* $Source: /cvs/libtom/libtomcrypt/src/pk/ecc/ltc_ecc_points.c,v $ */ |
|
|
58 /* $Revision: 1.5 $ */ |
|
|
59 /* $Date: 2006/12/04 02:19:48 $ */ |
|
|
60 |
