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, tomstdenis (at) gmail.com, 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 61
