1*f9fbec18Smcpowers /* 2*f9fbec18Smcpowers * ***** BEGIN LICENSE BLOCK ***** 3*f9fbec18Smcpowers * Version: MPL 1.1/GPL 2.0/LGPL 2.1 4*f9fbec18Smcpowers * 5*f9fbec18Smcpowers * The contents of this file are subject to the Mozilla Public License Version 6*f9fbec18Smcpowers * 1.1 (the "License"); you may not use this file except in compliance with 7*f9fbec18Smcpowers * the License. You may obtain a copy of the License at 8*f9fbec18Smcpowers * http://www.mozilla.org/MPL/ 9*f9fbec18Smcpowers * 10*f9fbec18Smcpowers * Software distributed under the License is distributed on an "AS IS" basis, 11*f9fbec18Smcpowers * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 12*f9fbec18Smcpowers * for the specific language governing rights and limitations under the 13*f9fbec18Smcpowers * License. 14*f9fbec18Smcpowers * 15*f9fbec18Smcpowers * The Original Code is the elliptic curve math library. 16*f9fbec18Smcpowers * 17*f9fbec18Smcpowers * The Initial Developer of the Original Code is 18*f9fbec18Smcpowers * Sun Microsystems, Inc. 19*f9fbec18Smcpowers * Portions created by the Initial Developer are Copyright (C) 2003 20*f9fbec18Smcpowers * the Initial Developer. All Rights Reserved. 21*f9fbec18Smcpowers * 22*f9fbec18Smcpowers * Contributor(s): 23*f9fbec18Smcpowers * Douglas Stebila <douglas@stebila.ca>, Sun Microsystems Laboratories 24*f9fbec18Smcpowers * 25*f9fbec18Smcpowers * Alternatively, the contents of this file may be used under the terms of 26*f9fbec18Smcpowers * either the GNU General Public License Version 2 or later (the "GPL"), or 27*f9fbec18Smcpowers * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), 28*f9fbec18Smcpowers * in which case the provisions of the GPL or the LGPL are applicable instead 29*f9fbec18Smcpowers * of those above. If you wish to allow use of your version of this file only 30*f9fbec18Smcpowers * under the terms of either the GPL or the LGPL, and not to allow others to 31*f9fbec18Smcpowers * use your version of this file under the terms of the MPL, indicate your 32*f9fbec18Smcpowers * decision by deleting the provisions above and replace them with the notice 33*f9fbec18Smcpowers * and other provisions required by the GPL or the LGPL. If you do not delete 34*f9fbec18Smcpowers * the provisions above, a recipient may use your version of this file under 35*f9fbec18Smcpowers * the terms of any one of the MPL, the GPL or the LGPL. 36*f9fbec18Smcpowers * 37*f9fbec18Smcpowers * ***** END LICENSE BLOCK ***** */ 38*f9fbec18Smcpowers /* 39*f9fbec18Smcpowers * Copyright 2007 Sun Microsystems, Inc. All rights reserved. 40*f9fbec18Smcpowers * Use is subject to license terms. 41*f9fbec18Smcpowers * 42*f9fbec18Smcpowers * Sun elects to use this software under the MPL license. 43*f9fbec18Smcpowers */ 44*f9fbec18Smcpowers 45*f9fbec18Smcpowers #pragma ident "%Z%%M% %I% %E% SMI" 46*f9fbec18Smcpowers 47*f9fbec18Smcpowers #include "ecl.h" 48*f9fbec18Smcpowers #include "ecl-curve.h" 49*f9fbec18Smcpowers #include "ecl-priv.h" 50*f9fbec18Smcpowers #ifndef _KERNEL 51*f9fbec18Smcpowers #include <stdlib.h> 52*f9fbec18Smcpowers #include <string.h> 53*f9fbec18Smcpowers #endif 54*f9fbec18Smcpowers 55*f9fbec18Smcpowers #define CHECK(func) if ((func) == NULL) { res = 0; goto CLEANUP; } 56*f9fbec18Smcpowers 57*f9fbec18Smcpowers /* Duplicates an ECCurveParams */ 58*f9fbec18Smcpowers ECCurveParams * 59*f9fbec18Smcpowers ECCurveParams_dup(const ECCurveParams * params, int kmflag) 60*f9fbec18Smcpowers { 61*f9fbec18Smcpowers int res = 1; 62*f9fbec18Smcpowers ECCurveParams *ret = NULL; 63*f9fbec18Smcpowers 64*f9fbec18Smcpowers #ifdef _KERNEL 65*f9fbec18Smcpowers ret = (ECCurveParams *) kmem_zalloc(sizeof(ECCurveParams), kmflag); 66*f9fbec18Smcpowers #else 67*f9fbec18Smcpowers CHECK(ret = (ECCurveParams *) calloc(1, sizeof(ECCurveParams))); 68*f9fbec18Smcpowers #endif 69*f9fbec18Smcpowers if (params->text != NULL) { 70*f9fbec18Smcpowers #ifdef _KERNEL 71*f9fbec18Smcpowers ret->text = kmem_alloc(strlen(params->text) + 1, kmflag); 72*f9fbec18Smcpowers bcopy(params->text, ret->text, strlen(params->text) + 1); 73*f9fbec18Smcpowers #else 74*f9fbec18Smcpowers CHECK(ret->text = strdup(params->text)); 75*f9fbec18Smcpowers #endif 76*f9fbec18Smcpowers } 77*f9fbec18Smcpowers ret->field = params->field; 78*f9fbec18Smcpowers ret->size = params->size; 79*f9fbec18Smcpowers if (params->irr != NULL) { 80*f9fbec18Smcpowers #ifdef _KERNEL 81*f9fbec18Smcpowers ret->irr = kmem_alloc(strlen(params->irr) + 1, kmflag); 82*f9fbec18Smcpowers bcopy(params->irr, ret->irr, strlen(params->irr) + 1); 83*f9fbec18Smcpowers #else 84*f9fbec18Smcpowers CHECK(ret->irr = strdup(params->irr)); 85*f9fbec18Smcpowers #endif 86*f9fbec18Smcpowers } 87*f9fbec18Smcpowers if (params->curvea != NULL) { 88*f9fbec18Smcpowers #ifdef _KERNEL 89*f9fbec18Smcpowers ret->curvea = kmem_alloc(strlen(params->curvea) + 1, kmflag); 90*f9fbec18Smcpowers bcopy(params->curvea, ret->curvea, strlen(params->curvea) + 1); 91*f9fbec18Smcpowers #else 92*f9fbec18Smcpowers CHECK(ret->curvea = strdup(params->curvea)); 93*f9fbec18Smcpowers #endif 94*f9fbec18Smcpowers } 95*f9fbec18Smcpowers if (params->curveb != NULL) { 96*f9fbec18Smcpowers #ifdef _KERNEL 97*f9fbec18Smcpowers ret->curveb = kmem_alloc(strlen(params->curveb) + 1, kmflag); 98*f9fbec18Smcpowers bcopy(params->curveb, ret->curveb, strlen(params->curveb) + 1); 99*f9fbec18Smcpowers #else 100*f9fbec18Smcpowers CHECK(ret->curveb = strdup(params->curveb)); 101*f9fbec18Smcpowers #endif 102*f9fbec18Smcpowers } 103*f9fbec18Smcpowers if (params->genx != NULL) { 104*f9fbec18Smcpowers #ifdef _KERNEL 105*f9fbec18Smcpowers ret->genx = kmem_alloc(strlen(params->genx) + 1, kmflag); 106*f9fbec18Smcpowers bcopy(params->genx, ret->genx, strlen(params->genx) + 1); 107*f9fbec18Smcpowers #else 108*f9fbec18Smcpowers CHECK(ret->genx = strdup(params->genx)); 109*f9fbec18Smcpowers #endif 110*f9fbec18Smcpowers } 111*f9fbec18Smcpowers if (params->geny != NULL) { 112*f9fbec18Smcpowers #ifdef _KERNEL 113*f9fbec18Smcpowers ret->geny = kmem_alloc(strlen(params->geny) + 1, kmflag); 114*f9fbec18Smcpowers bcopy(params->geny, ret->geny, strlen(params->geny) + 1); 115*f9fbec18Smcpowers #else 116*f9fbec18Smcpowers CHECK(ret->geny = strdup(params->geny)); 117*f9fbec18Smcpowers #endif 118*f9fbec18Smcpowers } 119*f9fbec18Smcpowers if (params->order != NULL) { 120*f9fbec18Smcpowers #ifdef _KERNEL 121*f9fbec18Smcpowers ret->order = kmem_alloc(strlen(params->order) + 1, kmflag); 122*f9fbec18Smcpowers bcopy(params->order, ret->order, strlen(params->order) + 1); 123*f9fbec18Smcpowers #else 124*f9fbec18Smcpowers CHECK(ret->order = strdup(params->order)); 125*f9fbec18Smcpowers #endif 126*f9fbec18Smcpowers } 127*f9fbec18Smcpowers ret->cofactor = params->cofactor; 128*f9fbec18Smcpowers 129*f9fbec18Smcpowers CLEANUP: 130*f9fbec18Smcpowers if (res != 1) { 131*f9fbec18Smcpowers EC_FreeCurveParams(ret); 132*f9fbec18Smcpowers return NULL; 133*f9fbec18Smcpowers } 134*f9fbec18Smcpowers return ret; 135*f9fbec18Smcpowers } 136*f9fbec18Smcpowers 137*f9fbec18Smcpowers #undef CHECK 138*f9fbec18Smcpowers 139*f9fbec18Smcpowers /* Construct ECCurveParams from an ECCurveName */ 140*f9fbec18Smcpowers ECCurveParams * 141*f9fbec18Smcpowers EC_GetNamedCurveParams(const ECCurveName name, int kmflag) 142*f9fbec18Smcpowers { 143*f9fbec18Smcpowers if ((name <= ECCurve_noName) || (ECCurve_pastLastCurve <= name) || 144*f9fbec18Smcpowers (ecCurve_map[name] == NULL)) { 145*f9fbec18Smcpowers return NULL; 146*f9fbec18Smcpowers } else { 147*f9fbec18Smcpowers return ECCurveParams_dup(ecCurve_map[name], kmflag); 148*f9fbec18Smcpowers } 149*f9fbec18Smcpowers } 150*f9fbec18Smcpowers 151*f9fbec18Smcpowers /* Free the memory allocated (if any) to an ECCurveParams object. */ 152*f9fbec18Smcpowers void 153*f9fbec18Smcpowers EC_FreeCurveParams(ECCurveParams * params) 154*f9fbec18Smcpowers { 155*f9fbec18Smcpowers if (params == NULL) 156*f9fbec18Smcpowers return; 157*f9fbec18Smcpowers if (params->text != NULL) 158*f9fbec18Smcpowers #ifdef _KERNEL 159*f9fbec18Smcpowers kmem_free(params->text, strlen(params->text) + 1); 160*f9fbec18Smcpowers #else 161*f9fbec18Smcpowers free(params->text); 162*f9fbec18Smcpowers #endif 163*f9fbec18Smcpowers if (params->irr != NULL) 164*f9fbec18Smcpowers #ifdef _KERNEL 165*f9fbec18Smcpowers kmem_free(params->irr, strlen(params->irr) + 1); 166*f9fbec18Smcpowers #else 167*f9fbec18Smcpowers free(params->irr); 168*f9fbec18Smcpowers #endif 169*f9fbec18Smcpowers if (params->curvea != NULL) 170*f9fbec18Smcpowers #ifdef _KERNEL 171*f9fbec18Smcpowers kmem_free(params->curvea, strlen(params->curvea) + 1); 172*f9fbec18Smcpowers #else 173*f9fbec18Smcpowers free(params->curvea); 174*f9fbec18Smcpowers #endif 175*f9fbec18Smcpowers if (params->curveb != NULL) 176*f9fbec18Smcpowers #ifdef _KERNEL 177*f9fbec18Smcpowers kmem_free(params->curveb, strlen(params->curveb) + 1); 178*f9fbec18Smcpowers #else 179*f9fbec18Smcpowers free(params->curveb); 180*f9fbec18Smcpowers #endif 181*f9fbec18Smcpowers if (params->genx != NULL) 182*f9fbec18Smcpowers #ifdef _KERNEL 183*f9fbec18Smcpowers kmem_free(params->genx, strlen(params->genx) + 1); 184*f9fbec18Smcpowers #else 185*f9fbec18Smcpowers free(params->genx); 186*f9fbec18Smcpowers #endif 187*f9fbec18Smcpowers if (params->geny != NULL) 188*f9fbec18Smcpowers #ifdef _KERNEL 189*f9fbec18Smcpowers kmem_free(params->geny, strlen(params->geny) + 1); 190*f9fbec18Smcpowers #else 191*f9fbec18Smcpowers free(params->geny); 192*f9fbec18Smcpowers #endif 193*f9fbec18Smcpowers if (params->order != NULL) 194*f9fbec18Smcpowers #ifdef _KERNEL 195*f9fbec18Smcpowers kmem_free(params->order, strlen(params->order) + 1); 196*f9fbec18Smcpowers #else 197*f9fbec18Smcpowers free(params->order); 198*f9fbec18Smcpowers #endif 199*f9fbec18Smcpowers #ifdef _KERNEL 200*f9fbec18Smcpowers kmem_free(params, sizeof(ECCurveParams)); 201*f9fbec18Smcpowers #else 202*f9fbec18Smcpowers free(params); 203*f9fbec18Smcpowers #endif 204*f9fbec18Smcpowers } 205