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| 1 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL |
| 2 * project 2006. |
| 3 */ |
| 4 /* ==================================================================== |
| 5 * Copyright (c) 2006 The OpenSSL Project. All rights reserved. |
| 6 * |
| 7 * Redistribution and use in source and binary forms, with or without |
| 8 * modification, are permitted provided that the following conditions |
| 9 * are met: |
| 10 * |
| 11 * 1. Redistributions of source code must retain the above copyright |
| 12 * notice, this list of conditions and the following disclaimer. |
| 13 * |
| 14 * 2. Redistributions in binary form must reproduce the above copyright |
| 15 * notice, this list of conditions and the following disclaimer in |
| 16 * the documentation and/or other materials provided with the |
| 17 * distribution. |
| 18 * |
| 19 * 3. All advertising materials mentioning features or use of this |
| 20 * software must display the following acknowledgment: |
| 21 * "This product includes software developed by the OpenSSL Project |
| 22 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)" |
| 23 * |
| 24 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to |
| 25 * endorse or promote products derived from this software without |
| 26 * prior written permission. For written permission, please contact |
| 27 * licensing@OpenSSL.org. |
| 28 * |
| 29 * 5. Products derived from this software may not be called "OpenSSL" |
| 30 * nor may "OpenSSL" appear in their names without prior written |
| 31 * permission of the OpenSSL Project. |
| 32 * |
| 33 * 6. Redistributions of any form whatsoever must retain the following |
| 34 * acknowledgment: |
| 35 * "This product includes software developed by the OpenSSL Project |
| 36 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)" |
| 37 * |
| 38 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY |
| 39 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
| 40 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 41 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR |
| 42 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, |
| 43 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT |
| 44 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
| 45 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
| 46 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, |
| 47 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 48 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED |
| 49 * OF THE POSSIBILITY OF SUCH DAMAGE. |
| 50 * ==================================================================== |
| 51 * |
| 52 * This product includes cryptographic software written by Eric Young |
| 53 * (eay@cryptsoft.com). This product includes software written by Tim |
| 54 * Hudson (tjh@cryptsoft.com). |
| 55 * |
| 56 */ |
| 57 |
| 58 #include <stdio.h> |
| 59 #include "cryptlib.h" |
| 60 #include <openssl/asn1t.h> |
| 61 #include <openssl/x509.h> |
| 62 #ifndef OPENSSL_NO_ENGINE |
| 63 #include <openssl/engine.h> |
| 64 #endif |
| 65 #include "asn1_locl.h" |
| 66 |
| 67 extern const EVP_PKEY_ASN1_METHOD rsa_asn1_meths[]; |
| 68 extern const EVP_PKEY_ASN1_METHOD dsa_asn1_meths[]; |
| 69 extern const EVP_PKEY_ASN1_METHOD dh_asn1_meth; |
| 70 extern const EVP_PKEY_ASN1_METHOD eckey_asn1_meth; |
| 71 extern const EVP_PKEY_ASN1_METHOD hmac_asn1_meth; |
| 72 |
| 73 /* Keep this sorted in type order !! */ |
| 74 static const EVP_PKEY_ASN1_METHOD *standard_methods[] = |
| 75 { |
| 76 #ifndef OPENSSL_NO_RSA |
| 77 &rsa_asn1_meths[0], |
| 78 &rsa_asn1_meths[1], |
| 79 #endif |
| 80 #ifndef OPENSSL_NO_DH |
| 81 &dh_asn1_meth, |
| 82 #endif |
| 83 #ifndef OPENSSL_NO_DSA |
| 84 &dsa_asn1_meths[0], |
| 85 &dsa_asn1_meths[1], |
| 86 &dsa_asn1_meths[2], |
| 87 &dsa_asn1_meths[3], |
| 88 &dsa_asn1_meths[4], |
| 89 #endif |
| 90 #ifndef OPENSSL_NO_EC |
| 91 &eckey_asn1_meth, |
| 92 #endif |
| 93 &hmac_asn1_meth |
| 94 }; |
| 95 |
| 96 typedef int sk_cmp_fn_type(const char * const *a, const char * const *b); |
| 97 DECLARE_STACK_OF(EVP_PKEY_ASN1_METHOD) |
| 98 static STACK_OF(EVP_PKEY_ASN1_METHOD) *app_methods = NULL; |
| 99 |
| 100 |
| 101 |
| 102 #ifdef TEST |
| 103 void main() |
| 104 { |
| 105 int i; |
| 106 for (i = 0; |
| 107 i < sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *); |
| 108 i++) |
| 109 fprintf(stderr, "Number %d id=%d (%s)\n", i, |
| 110 standard_methods[i]->pkey_id, |
| 111 OBJ_nid2sn(standard_methods[i]->pkey_id)); |
| 112 } |
| 113 #endif |
| 114 |
| 115 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *, |
| 116 const EVP_PKEY_ASN1_METHOD *, ameth); |
| 117 |
| 118 static int ameth_cmp(const EVP_PKEY_ASN1_METHOD * const *a, |
| 119 const EVP_PKEY_ASN1_METHOD * const *b) |
| 120 { |
| 121 return ((*a)->pkey_id - (*b)->pkey_id); |
| 122 } |
| 123 |
| 124 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_ASN1_METHOD *, |
| 125 const EVP_PKEY_ASN1_METHOD *, ameth); |
| 126 |
| 127 int EVP_PKEY_asn1_get_count(void) |
| 128 { |
| 129 int num = sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *); |
| 130 if (app_methods) |
| 131 num += sk_EVP_PKEY_ASN1_METHOD_num(app_methods); |
| 132 return num; |
| 133 } |
| 134 |
| 135 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_get0(int idx) |
| 136 { |
| 137 int num = sizeof(standard_methods)/sizeof(EVP_PKEY_ASN1_METHOD *); |
| 138 if (idx < 0) |
| 139 return NULL; |
| 140 if (idx < num) |
| 141 return standard_methods[idx]; |
| 142 idx -= num; |
| 143 return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx); |
| 144 } |
| 145 |
| 146 static const EVP_PKEY_ASN1_METHOD *pkey_asn1_find(int type) |
| 147 { |
| 148 EVP_PKEY_ASN1_METHOD tmp; |
| 149 const EVP_PKEY_ASN1_METHOD *t = &tmp, **ret; |
| 150 tmp.pkey_id = type; |
| 151 if (app_methods) |
| 152 { |
| 153 int idx; |
| 154 idx = sk_EVP_PKEY_ASN1_METHOD_find(app_methods, &tmp); |
| 155 if (idx >= 0) |
| 156 return sk_EVP_PKEY_ASN1_METHOD_value(app_methods, idx); |
| 157 } |
| 158 ret = OBJ_bsearch_ameth(&t, standard_methods, |
| 159 sizeof(standard_methods) |
| 160 /sizeof(EVP_PKEY_ASN1_METHOD *)); |
| 161 if (!ret || !*ret) |
| 162 return NULL; |
| 163 return *ret; |
| 164 } |
| 165 |
| 166 /* Find an implementation of an ASN1 algorithm. If 'pe' is not NULL |
| 167 * also search through engines and set *pe to a functional reference |
| 168 * to the engine implementing 'type' or NULL if no engine implements |
| 169 * it. |
| 170 */ |
| 171 |
| 172 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find(ENGINE **pe, int type) |
| 173 { |
| 174 const EVP_PKEY_ASN1_METHOD *t; |
| 175 |
| 176 for (;;) |
| 177 { |
| 178 t = pkey_asn1_find(type); |
| 179 if (!t || !(t->pkey_flags & ASN1_PKEY_ALIAS)) |
| 180 break; |
| 181 type = t->pkey_base_id; |
| 182 } |
| 183 if (pe) |
| 184 { |
| 185 #ifndef OPENSSL_NO_ENGINE |
| 186 ENGINE *e; |
| 187 /* type will contain the final unaliased type */ |
| 188 e = ENGINE_get_pkey_asn1_meth_engine(type); |
| 189 if (e) |
| 190 { |
| 191 *pe = e; |
| 192 return ENGINE_get_pkey_asn1_meth(e, type); |
| 193 } |
| 194 #endif |
| 195 *pe = NULL; |
| 196 } |
| 197 return t; |
| 198 } |
| 199 |
| 200 const EVP_PKEY_ASN1_METHOD *EVP_PKEY_asn1_find_str(ENGINE **pe, |
| 201 const char *str, int len) |
| 202 { |
| 203 int i; |
| 204 const EVP_PKEY_ASN1_METHOD *ameth; |
| 205 if (len == -1) |
| 206 len = strlen(str); |
| 207 if (pe) |
| 208 { |
| 209 #ifndef OPENSSL_NO_ENGINE |
| 210 ENGINE *e; |
| 211 ameth = ENGINE_pkey_asn1_find_str(&e, str, len); |
| 212 if (ameth) |
| 213 { |
| 214 /* Convert structural into |
| 215 * functional reference |
| 216 */ |
| 217 if (!ENGINE_init(e)) |
| 218 ameth = NULL; |
| 219 ENGINE_free(e); |
| 220 *pe = e; |
| 221 return ameth; |
| 222 } |
| 223 #endif |
| 224 *pe = NULL; |
| 225 } |
| 226 for (i = 0; i < EVP_PKEY_asn1_get_count(); i++) |
| 227 { |
| 228 ameth = EVP_PKEY_asn1_get0(i); |
| 229 if (ameth->pkey_flags & ASN1_PKEY_ALIAS) |
| 230 continue; |
| 231 if (((int)strlen(ameth->pem_str) == len) && |
| 232 !strncasecmp(ameth->pem_str, str, len)) |
| 233 return ameth; |
| 234 } |
| 235 return NULL; |
| 236 } |
| 237 |
| 238 int EVP_PKEY_asn1_add0(const EVP_PKEY_ASN1_METHOD *ameth) |
| 239 { |
| 240 if (app_methods == NULL) |
| 241 { |
| 242 app_methods = sk_EVP_PKEY_ASN1_METHOD_new(ameth_cmp); |
| 243 if (!app_methods) |
| 244 return 0; |
| 245 } |
| 246 if (!sk_EVP_PKEY_ASN1_METHOD_push(app_methods, ameth)) |
| 247 return 0; |
| 248 sk_EVP_PKEY_ASN1_METHOD_sort(app_methods); |
| 249 return 1; |
| 250 } |
| 251 |
| 252 int EVP_PKEY_asn1_add_alias(int to, int from) |
| 253 { |
| 254 EVP_PKEY_ASN1_METHOD *ameth; |
| 255 ameth = EVP_PKEY_asn1_new(from, ASN1_PKEY_ALIAS, NULL, NULL); |
| 256 if (!ameth) |
| 257 return 0; |
| 258 ameth->pkey_base_id = to; |
| 259 return EVP_PKEY_asn1_add0(ameth); |
| 260 } |
| 261 |
| 262 int EVP_PKEY_asn1_get0_info(int *ppkey_id, int *ppkey_base_id, int *ppkey_flags, |
| 263 const char **pinfo, const char **ppem_str, |
| 264 const EVP_PKEY_ASN1_METHOD *ameth) |
| 265 { |
| 266 if (!ameth) |
| 267 return 0; |
| 268 if (ppkey_id) |
| 269 *ppkey_id = ameth->pkey_id; |
| 270 if (ppkey_base_id) |
| 271 *ppkey_base_id = ameth->pkey_base_id; |
| 272 if (ppkey_flags) |
| 273 *ppkey_flags = ameth->pkey_flags; |
| 274 if (pinfo) |
| 275 *pinfo = ameth->info; |
| 276 if (ppem_str) |
| 277 *ppem_str = ameth->pem_str; |
| 278 return 1; |
| 279 } |
| 280 |
| 281 const EVP_PKEY_ASN1_METHOD* EVP_PKEY_get0_asn1(EVP_PKEY *pkey) |
| 282 { |
| 283 return pkey->ameth; |
| 284 } |
| 285 |
| 286 EVP_PKEY_ASN1_METHOD* EVP_PKEY_asn1_new(int id, int flags, |
| 287 const char *pem_str, const char *info) |
| 288 { |
| 289 EVP_PKEY_ASN1_METHOD *ameth; |
| 290 ameth = OPENSSL_malloc(sizeof(EVP_PKEY_ASN1_METHOD)); |
| 291 if (!ameth) |
| 292 return NULL; |
| 293 |
| 294 ameth->pkey_id = id; |
| 295 ameth->pkey_base_id = id; |
| 296 ameth->pkey_flags = flags | ASN1_PKEY_DYNAMIC; |
| 297 |
| 298 if (info) |
| 299 { |
| 300 ameth->info = BUF_strdup(info); |
| 301 if (!ameth->info) |
| 302 goto err; |
| 303 } |
| 304 else |
| 305 ameth->info = NULL; |
| 306 |
| 307 if (pem_str) |
| 308 { |
| 309 ameth->pem_str = BUF_strdup(pem_str); |
| 310 if (!ameth->pem_str) |
| 311 goto err; |
| 312 } |
| 313 else |
| 314 ameth->pem_str = NULL; |
| 315 |
| 316 ameth->pub_decode = 0; |
| 317 ameth->pub_encode = 0; |
| 318 ameth->pub_cmp = 0; |
| 319 ameth->pub_print = 0; |
| 320 |
| 321 ameth->priv_decode = 0; |
| 322 ameth->priv_encode = 0; |
| 323 ameth->priv_print = 0; |
| 324 |
| 325 ameth->old_priv_encode = 0; |
| 326 ameth->old_priv_decode = 0; |
| 327 |
| 328 ameth->pkey_size = 0; |
| 329 ameth->pkey_bits = 0; |
| 330 |
| 331 ameth->param_decode = 0; |
| 332 ameth->param_encode = 0; |
| 333 ameth->param_missing = 0; |
| 334 ameth->param_copy = 0; |
| 335 ameth->param_cmp = 0; |
| 336 ameth->param_print = 0; |
| 337 |
| 338 ameth->pkey_free = 0; |
| 339 ameth->pkey_ctrl = 0; |
| 340 |
| 341 return ameth; |
| 342 |
| 343 err: |
| 344 |
| 345 EVP_PKEY_asn1_free(ameth); |
| 346 return NULL; |
| 347 |
| 348 } |
| 349 |
| 350 void EVP_PKEY_asn1_copy(EVP_PKEY_ASN1_METHOD *dst, |
| 351 const EVP_PKEY_ASN1_METHOD *src) |
| 352 { |
| 353 |
| 354 dst->pub_decode = src->pub_decode; |
| 355 dst->pub_encode = src->pub_encode; |
| 356 dst->pub_cmp = src->pub_cmp; |
| 357 dst->pub_print = src->pub_print; |
| 358 |
| 359 dst->priv_decode = src->priv_decode; |
| 360 dst->priv_encode = src->priv_encode; |
| 361 dst->priv_print = src->priv_print; |
| 362 |
| 363 dst->old_priv_encode = src->old_priv_encode; |
| 364 dst->old_priv_decode = src->old_priv_decode; |
| 365 |
| 366 dst->pkey_size = src->pkey_size; |
| 367 dst->pkey_bits = src->pkey_bits; |
| 368 |
| 369 dst->param_decode = src->param_decode; |
| 370 dst->param_encode = src->param_encode; |
| 371 dst->param_missing = src->param_missing; |
| 372 dst->param_copy = src->param_copy; |
| 373 dst->param_cmp = src->param_cmp; |
| 374 dst->param_print = src->param_print; |
| 375 |
| 376 dst->pkey_free = src->pkey_free; |
| 377 dst->pkey_ctrl = src->pkey_ctrl; |
| 378 |
| 379 } |
| 380 |
| 381 void EVP_PKEY_asn1_free(EVP_PKEY_ASN1_METHOD *ameth) |
| 382 { |
| 383 if (ameth && (ameth->pkey_flags & ASN1_PKEY_DYNAMIC)) |
| 384 { |
| 385 if (ameth->pem_str) |
| 386 OPENSSL_free(ameth->pem_str); |
| 387 if (ameth->info) |
| 388 OPENSSL_free(ameth->info); |
| 389 OPENSSL_free(ameth); |
| 390 } |
| 391 } |
| 392 |
| 393 void EVP_PKEY_asn1_set_public(EVP_PKEY_ASN1_METHOD *ameth, |
| 394 int (*pub_decode)(EVP_PKEY *pk, X509_PUBKEY *pub), |
| 395 int (*pub_encode)(X509_PUBKEY *pub, const EVP_PKEY *pk), |
| 396 int (*pub_cmp)(const EVP_PKEY *a, const EVP_PKEY *b), |
| 397 int (*pub_print)(BIO *out, const EVP_PKEY *pkey, int indent, |
| 398 ASN1_PCTX *pctx), |
| 399 int (*pkey_size)(const EVP_PKEY *pk), |
| 400 int (*pkey_bits)(const EVP_PKEY *pk)) |
| 401 { |
| 402 ameth->pub_decode = pub_decode; |
| 403 ameth->pub_encode = pub_encode; |
| 404 ameth->pub_cmp = pub_cmp; |
| 405 ameth->pub_print = pub_print; |
| 406 ameth->pkey_size = pkey_size; |
| 407 ameth->pkey_bits = pkey_bits; |
| 408 } |
| 409 |
| 410 void EVP_PKEY_asn1_set_private(EVP_PKEY_ASN1_METHOD *ameth, |
| 411 int (*priv_decode)(EVP_PKEY *pk, PKCS8_PRIV_KEY_INFO *p8inf), |
| 412 int (*priv_encode)(PKCS8_PRIV_KEY_INFO *p8, const EVP_PKEY *pk), |
| 413 int (*priv_print)(BIO *out, const EVP_PKEY *pkey, int indent, |
| 414 ASN1_PCTX *pctx)) |
| 415 { |
| 416 ameth->priv_decode = priv_decode; |
| 417 ameth->priv_encode = priv_encode; |
| 418 ameth->priv_print = priv_print; |
| 419 } |
| 420 |
| 421 void EVP_PKEY_asn1_set_param(EVP_PKEY_ASN1_METHOD *ameth, |
| 422 int (*param_decode)(EVP_PKEY *pkey, |
| 423 const unsigned char **pder, int derlen), |
| 424 int (*param_encode)(const EVP_PKEY *pkey, unsigned char **pder), |
| 425 int (*param_missing)(const EVP_PKEY *pk), |
| 426 int (*param_copy)(EVP_PKEY *to, const EVP_PKEY *from), |
| 427 int (*param_cmp)(const EVP_PKEY *a, const EVP_PKEY *b), |
| 428 int (*param_print)(BIO *out, const EVP_PKEY *pkey, int indent, |
| 429 ASN1_PCTX *pctx)) |
| 430 { |
| 431 ameth->param_decode = param_decode; |
| 432 ameth->param_encode = param_encode; |
| 433 ameth->param_missing = param_missing; |
| 434 ameth->param_copy = param_copy; |
| 435 ameth->param_cmp = param_cmp; |
| 436 ameth->param_print = param_print; |
| 437 } |
| 438 |
| 439 void EVP_PKEY_asn1_set_free(EVP_PKEY_ASN1_METHOD *ameth, |
| 440 void (*pkey_free)(EVP_PKEY *pkey)) |
| 441 { |
| 442 ameth->pkey_free = pkey_free; |
| 443 } |
| 444 |
| 445 void EVP_PKEY_asn1_set_ctrl(EVP_PKEY_ASN1_METHOD *ameth, |
| 446 int (*pkey_ctrl)(EVP_PKEY *pkey, int op, |
| 447 long arg1, void *arg2)) |
| 448 { |
| 449 ameth->pkey_ctrl = pkey_ctrl; |
| 450 } |
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