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