ecs_lib.c (167613) | ecs_lib.c (215697) |
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1/* crypto/ecdsa/ecs_lib.c */ 2/* ==================================================================== 3 * Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in 14 * the documentation and/or other materials provided with the 15 * distribution. 16 * 17 * 3. All advertising materials mentioning features or use of this 18 * software must display the following acknowledgment: 19 * "This product includes software developed by the OpenSSL Project 20 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 21 * 22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 23 * endorse or promote products derived from this software without 24 * prior written permission. For written permission, please contact 25 * openssl-core@OpenSSL.org. 26 * 27 * 5. Products derived from this software may not be called "OpenSSL" 28 * nor may "OpenSSL" appear in their names without prior written 29 * permission of the OpenSSL Project. 30 * 31 * 6. Redistributions of any form whatsoever must retain the following 32 * acknowledgment: 33 * "This product includes software developed by the OpenSSL Project 34 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 35 * 36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 47 * OF THE POSSIBILITY OF SUCH DAMAGE. 48 * ==================================================================== 49 * 50 * This product includes cryptographic software written by Eric Young 51 * (eay@cryptsoft.com). This product includes software written by Tim 52 * Hudson (tjh@cryptsoft.com). 53 * 54 */ 55 56#include <string.h> 57#include "ecs_locl.h" 58#ifndef OPENSSL_NO_ENGINE 59#include <openssl/engine.h> 60#endif 61#include <openssl/err.h> 62#include <openssl/bn.h> 63 64const char ECDSA_version[]="ECDSA" OPENSSL_VERSION_PTEXT; 65 66static const ECDSA_METHOD *default_ECDSA_method = NULL; 67 68static void *ecdsa_data_new(void); 69static void *ecdsa_data_dup(void *); 70static void ecdsa_data_free(void *); 71 72void ECDSA_set_default_method(const ECDSA_METHOD *meth) 73{ 74 default_ECDSA_method = meth; 75} 76 77const ECDSA_METHOD *ECDSA_get_default_method(void) 78{ 79 if(!default_ECDSA_method) 80 default_ECDSA_method = ECDSA_OpenSSL(); 81 return default_ECDSA_method; 82} 83 84int ECDSA_set_method(EC_KEY *eckey, const ECDSA_METHOD *meth) 85{ | 1/* crypto/ecdsa/ecs_lib.c */ 2/* ==================================================================== 3 * Copyright (c) 1998-2005 The OpenSSL Project. All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in 14 * the documentation and/or other materials provided with the 15 * distribution. 16 * 17 * 3. All advertising materials mentioning features or use of this 18 * software must display the following acknowledgment: 19 * "This product includes software developed by the OpenSSL Project 20 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" 21 * 22 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to 23 * endorse or promote products derived from this software without 24 * prior written permission. For written permission, please contact 25 * openssl-core@OpenSSL.org. 26 * 27 * 5. Products derived from this software may not be called "OpenSSL" 28 * nor may "OpenSSL" appear in their names without prior written 29 * permission of the OpenSSL Project. 30 * 31 * 6. Redistributions of any form whatsoever must retain the following 32 * acknowledgment: 33 * "This product includes software developed by the OpenSSL Project 34 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" 35 * 36 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY 37 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 38 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 39 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR 40 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 42 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 43 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 44 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 45 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 46 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED 47 * OF THE POSSIBILITY OF SUCH DAMAGE. 48 * ==================================================================== 49 * 50 * This product includes cryptographic software written by Eric Young 51 * (eay@cryptsoft.com). This product includes software written by Tim 52 * Hudson (tjh@cryptsoft.com). 53 * 54 */ 55 56#include <string.h> 57#include "ecs_locl.h" 58#ifndef OPENSSL_NO_ENGINE 59#include <openssl/engine.h> 60#endif 61#include <openssl/err.h> 62#include <openssl/bn.h> 63 64const char ECDSA_version[]="ECDSA" OPENSSL_VERSION_PTEXT; 65 66static const ECDSA_METHOD *default_ECDSA_method = NULL; 67 68static void *ecdsa_data_new(void); 69static void *ecdsa_data_dup(void *); 70static void ecdsa_data_free(void *); 71 72void ECDSA_set_default_method(const ECDSA_METHOD *meth) 73{ 74 default_ECDSA_method = meth; 75} 76 77const ECDSA_METHOD *ECDSA_get_default_method(void) 78{ 79 if(!default_ECDSA_method) 80 default_ECDSA_method = ECDSA_OpenSSL(); 81 return default_ECDSA_method; 82} 83 84int ECDSA_set_method(EC_KEY *eckey, const ECDSA_METHOD *meth) 85{ |
86 const ECDSA_METHOD *mtmp; | |
87 ECDSA_DATA *ecdsa; 88 89 ecdsa = ecdsa_check(eckey); 90 91 if (ecdsa == NULL) 92 return 0; 93 | 86 ECDSA_DATA *ecdsa; 87 88 ecdsa = ecdsa_check(eckey); 89 90 if (ecdsa == NULL) 91 return 0; 92 |
94 mtmp = ecdsa->meth; | |
95#ifndef OPENSSL_NO_ENGINE 96 if (ecdsa->engine) 97 { 98 ENGINE_finish(ecdsa->engine); 99 ecdsa->engine = NULL; 100 } 101#endif 102 ecdsa->meth = meth; 103 104 return 1; 105} 106 107static ECDSA_DATA *ECDSA_DATA_new_method(ENGINE *engine) 108{ 109 ECDSA_DATA *ret; 110 111 ret=(ECDSA_DATA *)OPENSSL_malloc(sizeof(ECDSA_DATA)); 112 if (ret == NULL) 113 { 114 ECDSAerr(ECDSA_F_ECDSA_DATA_NEW_METHOD, ERR_R_MALLOC_FAILURE); 115 return(NULL); 116 } 117 118 ret->init = NULL; 119 120 ret->meth = ECDSA_get_default_method(); 121 ret->engine = engine; 122#ifndef OPENSSL_NO_ENGINE 123 if (!ret->engine) 124 ret->engine = ENGINE_get_default_ECDSA(); 125 if (ret->engine) 126 { 127 ret->meth = ENGINE_get_ECDSA(ret->engine); 128 if (!ret->meth) 129 { 130 ECDSAerr(ECDSA_F_ECDSA_DATA_NEW_METHOD, ERR_R_ENGINE_LIB); 131 ENGINE_finish(ret->engine); 132 OPENSSL_free(ret); 133 return NULL; 134 } 135 } 136#endif 137 138 ret->flags = ret->meth->flags; 139 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_ECDSA, ret, &ret->ex_data); 140#if 0 141 if ((ret->meth->init != NULL) && !ret->meth->init(ret)) 142 { 143 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ECDSA, ret, &ret->ex_data); 144 OPENSSL_free(ret); 145 ret=NULL; 146 } 147#endif 148 return(ret); 149} 150 151static void *ecdsa_data_new(void) 152{ 153 return (void *)ECDSA_DATA_new_method(NULL); 154} 155 156static void *ecdsa_data_dup(void *data) 157{ 158 ECDSA_DATA *r = (ECDSA_DATA *)data; 159 160 /* XXX: dummy operation */ 161 if (r == NULL) 162 return NULL; 163 164 return ecdsa_data_new(); 165} 166 167static void ecdsa_data_free(void *data) 168{ 169 ECDSA_DATA *r = (ECDSA_DATA *)data; 170 171#ifndef OPENSSL_NO_ENGINE 172 if (r->engine) 173 ENGINE_finish(r->engine); 174#endif 175 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ECDSA, r, &r->ex_data); 176 177 OPENSSL_cleanse((void *)r, sizeof(ECDSA_DATA)); 178 179 OPENSSL_free(r); 180} 181 182ECDSA_DATA *ecdsa_check(EC_KEY *key) 183{ 184 ECDSA_DATA *ecdsa_data; 185 186 void *data = EC_KEY_get_key_method_data(key, ecdsa_data_dup, 187 ecdsa_data_free, ecdsa_data_free); 188 if (data == NULL) 189 { 190 ecdsa_data = (ECDSA_DATA *)ecdsa_data_new(); 191 if (ecdsa_data == NULL) 192 return NULL; 193 EC_KEY_insert_key_method_data(key, (void *)ecdsa_data, 194 ecdsa_data_dup, ecdsa_data_free, ecdsa_data_free); 195 } 196 else 197 ecdsa_data = (ECDSA_DATA *)data; 198 199 200 return ecdsa_data; 201} 202 203int ECDSA_size(const EC_KEY *r) 204{ 205 int ret,i; 206 ASN1_INTEGER bs; 207 BIGNUM *order=NULL; 208 unsigned char buf[4]; 209 const EC_GROUP *group; 210 211 if (r == NULL) 212 return 0; 213 group = EC_KEY_get0_group(r); 214 if (group == NULL) 215 return 0; 216 217 if ((order = BN_new()) == NULL) return 0; 218 if (!EC_GROUP_get_order(group,order,NULL)) 219 { 220 BN_clear_free(order); 221 return 0; 222 } 223 i=BN_num_bits(order); 224 bs.length=(i+7)/8; 225 bs.data=buf; 226 bs.type=V_ASN1_INTEGER; 227 /* If the top bit is set the asn1 encoding is 1 larger. */ 228 buf[0]=0xff; 229 230 i=i2d_ASN1_INTEGER(&bs,NULL); 231 i+=i; /* r and s */ 232 ret=ASN1_object_size(1,i,V_ASN1_SEQUENCE); 233 BN_clear_free(order); 234 return(ret); 235} 236 237 238int ECDSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 239 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 240{ 241 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_ECDSA, argl, argp, 242 new_func, dup_func, free_func); 243} 244 245int ECDSA_set_ex_data(EC_KEY *d, int idx, void *arg) 246{ 247 ECDSA_DATA *ecdsa; 248 ecdsa = ecdsa_check(d); 249 if (ecdsa == NULL) 250 return 0; 251 return(CRYPTO_set_ex_data(&ecdsa->ex_data,idx,arg)); 252} 253 254void *ECDSA_get_ex_data(EC_KEY *d, int idx) 255{ 256 ECDSA_DATA *ecdsa; 257 ecdsa = ecdsa_check(d); 258 if (ecdsa == NULL) 259 return NULL; 260 return(CRYPTO_get_ex_data(&ecdsa->ex_data,idx)); 261} | 93#ifndef OPENSSL_NO_ENGINE 94 if (ecdsa->engine) 95 { 96 ENGINE_finish(ecdsa->engine); 97 ecdsa->engine = NULL; 98 } 99#endif 100 ecdsa->meth = meth; 101 102 return 1; 103} 104 105static ECDSA_DATA *ECDSA_DATA_new_method(ENGINE *engine) 106{ 107 ECDSA_DATA *ret; 108 109 ret=(ECDSA_DATA *)OPENSSL_malloc(sizeof(ECDSA_DATA)); 110 if (ret == NULL) 111 { 112 ECDSAerr(ECDSA_F_ECDSA_DATA_NEW_METHOD, ERR_R_MALLOC_FAILURE); 113 return(NULL); 114 } 115 116 ret->init = NULL; 117 118 ret->meth = ECDSA_get_default_method(); 119 ret->engine = engine; 120#ifndef OPENSSL_NO_ENGINE 121 if (!ret->engine) 122 ret->engine = ENGINE_get_default_ECDSA(); 123 if (ret->engine) 124 { 125 ret->meth = ENGINE_get_ECDSA(ret->engine); 126 if (!ret->meth) 127 { 128 ECDSAerr(ECDSA_F_ECDSA_DATA_NEW_METHOD, ERR_R_ENGINE_LIB); 129 ENGINE_finish(ret->engine); 130 OPENSSL_free(ret); 131 return NULL; 132 } 133 } 134#endif 135 136 ret->flags = ret->meth->flags; 137 CRYPTO_new_ex_data(CRYPTO_EX_INDEX_ECDSA, ret, &ret->ex_data); 138#if 0 139 if ((ret->meth->init != NULL) && !ret->meth->init(ret)) 140 { 141 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ECDSA, ret, &ret->ex_data); 142 OPENSSL_free(ret); 143 ret=NULL; 144 } 145#endif 146 return(ret); 147} 148 149static void *ecdsa_data_new(void) 150{ 151 return (void *)ECDSA_DATA_new_method(NULL); 152} 153 154static void *ecdsa_data_dup(void *data) 155{ 156 ECDSA_DATA *r = (ECDSA_DATA *)data; 157 158 /* XXX: dummy operation */ 159 if (r == NULL) 160 return NULL; 161 162 return ecdsa_data_new(); 163} 164 165static void ecdsa_data_free(void *data) 166{ 167 ECDSA_DATA *r = (ECDSA_DATA *)data; 168 169#ifndef OPENSSL_NO_ENGINE 170 if (r->engine) 171 ENGINE_finish(r->engine); 172#endif 173 CRYPTO_free_ex_data(CRYPTO_EX_INDEX_ECDSA, r, &r->ex_data); 174 175 OPENSSL_cleanse((void *)r, sizeof(ECDSA_DATA)); 176 177 OPENSSL_free(r); 178} 179 180ECDSA_DATA *ecdsa_check(EC_KEY *key) 181{ 182 ECDSA_DATA *ecdsa_data; 183 184 void *data = EC_KEY_get_key_method_data(key, ecdsa_data_dup, 185 ecdsa_data_free, ecdsa_data_free); 186 if (data == NULL) 187 { 188 ecdsa_data = (ECDSA_DATA *)ecdsa_data_new(); 189 if (ecdsa_data == NULL) 190 return NULL; 191 EC_KEY_insert_key_method_data(key, (void *)ecdsa_data, 192 ecdsa_data_dup, ecdsa_data_free, ecdsa_data_free); 193 } 194 else 195 ecdsa_data = (ECDSA_DATA *)data; 196 197 198 return ecdsa_data; 199} 200 201int ECDSA_size(const EC_KEY *r) 202{ 203 int ret,i; 204 ASN1_INTEGER bs; 205 BIGNUM *order=NULL; 206 unsigned char buf[4]; 207 const EC_GROUP *group; 208 209 if (r == NULL) 210 return 0; 211 group = EC_KEY_get0_group(r); 212 if (group == NULL) 213 return 0; 214 215 if ((order = BN_new()) == NULL) return 0; 216 if (!EC_GROUP_get_order(group,order,NULL)) 217 { 218 BN_clear_free(order); 219 return 0; 220 } 221 i=BN_num_bits(order); 222 bs.length=(i+7)/8; 223 bs.data=buf; 224 bs.type=V_ASN1_INTEGER; 225 /* If the top bit is set the asn1 encoding is 1 larger. */ 226 buf[0]=0xff; 227 228 i=i2d_ASN1_INTEGER(&bs,NULL); 229 i+=i; /* r and s */ 230 ret=ASN1_object_size(1,i,V_ASN1_SEQUENCE); 231 BN_clear_free(order); 232 return(ret); 233} 234 235 236int ECDSA_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func, 237 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func) 238{ 239 return CRYPTO_get_ex_new_index(CRYPTO_EX_INDEX_ECDSA, argl, argp, 240 new_func, dup_func, free_func); 241} 242 243int ECDSA_set_ex_data(EC_KEY *d, int idx, void *arg) 244{ 245 ECDSA_DATA *ecdsa; 246 ecdsa = ecdsa_check(d); 247 if (ecdsa == NULL) 248 return 0; 249 return(CRYPTO_set_ex_data(&ecdsa->ex_data,idx,arg)); 250} 251 252void *ECDSA_get_ex_data(EC_KEY *d, int idx) 253{ 254 ECDSA_DATA *ecdsa; 255 ecdsa = ecdsa_check(d); 256 if (ecdsa == NULL) 257 return NULL; 258 return(CRYPTO_get_ex_data(&ecdsa->ex_data,idx)); 259} |