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| 1 /* | |
| 2 * Platform specific crypto wrappers | |
| 3 * | |
| 4 * ***** BEGIN LICENSE BLOCK ***** | |
| 5 * Version: MPL 1.1/GPL 2.0/LGPL 2.1 | |
| 6 * | |
| 7 * The contents of this file are subject to the Mozilla Public License Version | |
| 8 * 1.1 (the "License"); you may not use this file except in compliance with | |
| 9 * the License. You may obtain a copy of the License at | |
| 10 * http://www.mozilla.org/MPL/ | |
| 11 * | |
| 12 * Software distributed under the License is distributed on an "AS IS" basis, | |
| 13 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License | |
| 14 * for the specific language governing rights and limitations under the | |
| 15 * License. | |
| 16 * | |
| 17 * The Original Code is the Netscape security libraries. | |
| 18 * | |
| 19 * The Initial Developer of the Original Code is | |
| 20 * Netscape Communications Corporation. | |
| 21 * Portions created by the Initial Developer are Copyright (C) 1994-2000 | |
| 22 * the Initial Developer. All Rights Reserved. | |
| 23 * | |
| 24 * Contributor(s): | |
| 25 * Ryan Sleevi <ryan.sleevi@gmail.com> | |
| 26 * | |
| 27 * Alternatively, the contents of this file may be used under the terms of | |
| 28 * either the GNU General Public License Version 2 or later (the "GPL"), or | |
| 29 * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"), | |
| 30 * in which case the provisions of the GPL or the LGPL are applicable instead | |
| 31 * of those above. If you wish to allow use of your version of this file only | |
| 32 * under the terms of either the GPL or the LGPL, and not to allow others to | |
| 33 * use your version of this file under the terms of the MPL, indicate your | |
| 34 * decision by deleting the provisions above and replace them with the notice | |
| 35 * and other provisions required by the GPL or the LGPL. If you do not delete | |
| 36 * the provisions above, a recipient may use your version of this file under | |
| 37 * the terms of any one of the MPL, the GPL or the LGPL. | |
| 38 * | |
| 39 * ***** END LICENSE BLOCK ***** */ | |
| 40 /* $Id$ */ | |
| 41 #include "certt.h" | |
| 42 #include "cryptohi.h" | |
| 43 #include "keythi.h" | |
| 44 #include "nss.h" | |
| 45 #include "secitem.h" | |
| 46 #include "ssl.h" | |
| 47 #include "sslimpl.h" | |
| 48 #include "prerror.h" | |
| 49 #include "prinit.h" | |
| 50 | |
| 51 #ifdef NSS_PLATFORM_CLIENT_AUTH | |
| 52 #ifdef XP_WIN32 | |
| 53 #include <NCrypt.h> | |
| 54 #endif | |
| 55 #endif | |
| 56 | |
| 57 #ifdef NSS_PLATFORM_CLIENT_AUTH | |
| 58 CERTCertificateList* | |
| 59 hack_NewCertificateListFromCertList(CERTCertList* list) | |
| 60 { | |
| 61 CERTCertificateList * chain = NULL; | |
| 62 PLArenaPool * arena = NULL; | |
| 63 CERTCertListNode * node; | |
| 64 int len; | |
| 65 | |
| 66 if (CERT_LIST_EMPTY(list)) | |
| 67 goto loser; | |
| 68 | |
| 69 arena = PORT_NewArena(4096); | |
| 70 if (arena == NULL) | |
| 71 goto loser; | |
| 72 | |
| 73 for (len = 0, node = CERT_LIST_HEAD(list); !CERT_LIST_END(node, list); | |
| 74 len++, node = CERT_LIST_NEXT(node)) { | |
| 75 } | |
| 76 | |
| 77 chain = PORT_ArenaNew(arena, CERTCertificateList); | |
| 78 if (chain == NULL) | |
| 79 goto loser; | |
| 80 | |
| 81 chain->certs = PORT_ArenaNewArray(arena, SECItem, len); | |
| 82 if (!chain->certs) | |
| 83 goto loser; | |
| 84 chain->len = len; | |
| 85 | |
| 86 for (len = 0, node = CERT_LIST_HEAD(list); !CERT_LIST_END(node, list); | |
| 87 len++, node = CERT_LIST_NEXT(node)) { | |
| 88 // Check to see if the last cert to be sent is a self-signed cert, | |
| 89 // and if so, omit it from the list of certificates. However, if | |
| 90 // there is only one cert (len == 0), include the cert, as it means | |
| 91 // the EE cert is self-signed. | |
| 92 if (len > 0 && (len == chain->len - 1) && node->cert->isRoot) { | |
| 93 chain->len = len; | |
| 94 break; | |
| 95 } | |
| 96 SECITEM_CopyItem(arena, &chain->certs[len], &node->cert->derCert); | |
| 97 } | |
| 98 | |
| 99 chain->arena = arena; | |
| 100 return chain; | |
| 101 | |
| 102 loser: | |
| 103 if (arena) { | |
| 104 PORT_FreeArena(arena, PR_FALSE); | |
| 105 } | |
| 106 return NULL; | |
| 107 } | |
| 108 | |
| 109 #if defined(XP_WIN32) | |
| 110 typedef SECURITY_STATUS (WINAPI *NCryptFreeObjectFunc)(NCRYPT_HANDLE); | |
| 111 typedef SECURITY_STATUS (WINAPI *NCryptSignHashFunc)( | |
| 112 NCRYPT_KEY_HANDLE /* hKey */, | |
| 113 VOID* /* pPaddingInfo */, | |
| 114 PBYTE /* pbHashValue */, | |
| 115 DWORD /* cbHashValue */, | |
| 116 PBYTE /* pbSignature */, | |
| 117 DWORD /* cbSignature */, | |
| 118 DWORD* /* pcbResult */, | |
| 119 DWORD /* dwFlags */); | |
| 120 | |
| 121 static PRCallOnceType cngFunctionsInitOnce; | |
| 122 static const PRCallOnceType pristineCallOnce; | |
| 123 | |
| 124 static PRLibrary *ncrypt_library = NULL; | |
| 125 static NCryptFreeObjectFunc pNCryptFreeObject = NULL; | |
| 126 static NCryptSignHashFunc pNCryptSignHash = NULL; | |
| 127 | |
| 128 static SECStatus | |
| 129 ssl_ShutdownCngFunctions(void *appData, void *nssData) | |
| 130 { | |
| 131 pNCryptSignHash = NULL; | |
| 132 pNCryptFreeObject = NULL; | |
| 133 if (ncrypt_library) { | |
| 134 PR_UnloadLibrary(ncrypt_library); | |
| 135 ncrypt_library = NULL; | |
| 136 } | |
| 137 | |
| 138 cngFunctionsInitOnce = pristineCallOnce; | |
| 139 | |
| 140 return SECSuccess; | |
| 141 } | |
| 142 | |
| 143 static PRStatus | |
| 144 ssl_InitCngFunctions(void) | |
| 145 { | |
| 146 SECStatus rv; | |
| 147 | |
| 148 ncrypt_library = PR_LoadLibrary("ncrypt.dll"); | |
| 149 if (ncrypt_library == NULL) | |
| 150 goto loser; | |
| 151 | |
| 152 pNCryptFreeObject = (NCryptFreeObjectFunc)PR_FindFunctionSymbol( | |
| 153 ncrypt_library, "NCryptFreeObject"); | |
| 154 if (pNCryptFreeObject == NULL) | |
| 155 goto loser; | |
| 156 | |
| 157 pNCryptSignHash = (NCryptSignHashFunc)PR_FindFunctionSymbol( | |
| 158 ncrypt_library, "NCryptSignHash"); | |
| 159 if (pNCryptSignHash == NULL) | |
| 160 goto loser; | |
| 161 | |
| 162 rv = NSS_RegisterShutdown(ssl_ShutdownCngFunctions, NULL); | |
| 163 if (rv != SECSuccess) | |
| 164 goto loser; | |
| 165 | |
| 166 return PR_SUCCESS; | |
| 167 | |
| 168 loser: | |
| 169 pNCryptSignHash = NULL; | |
| 170 pNCryptFreeObject = NULL; | |
| 171 if (ncrypt_library) { | |
| 172 PR_UnloadLibrary(ncrypt_library); | |
| 173 ncrypt_library = NULL; | |
| 174 } | |
| 175 | |
| 176 return PR_FAILURE; | |
| 177 } | |
| 178 | |
| 179 static SECStatus | |
| 180 ssl_InitCng(void) | |
| 181 { | |
| 182 if (PR_CallOnce(&cngFunctionsInitOnce, ssl_InitCngFunctions) != PR_SUCCESS) | |
| 183 return SECFailure; | |
| 184 return SECSuccess; | |
| 185 } | |
| 186 | |
| 187 void | |
| 188 ssl_FreePlatformKey(PlatformKey key) | |
| 189 { | |
| 190 if (!key) | |
| 191 return; | |
| 192 | |
| 193 if (key->dwKeySpec == CERT_NCRYPT_KEY_SPEC) { | |
| 194 if (ssl_InitCng() == SECSuccess) { | |
| 195 (*pNCryptFreeObject)(key->hNCryptKey); | |
| 196 } | |
| 197 } else { | |
| 198 CryptReleaseContext(key->hCryptProv, 0); | |
| 199 } | |
| 200 PORT_Free(key); | |
| 201 } | |
| 202 | |
| 203 static SECStatus | |
| 204 ssl3_CngPlatformSignHashes(SSL3Hashes *hash, PlatformKey key, SECItem *buf, | |
| 205 PRBool isTLS, KeyType keyType) | |
| 206 { | |
| 207 SECStatus rv = SECFailure; | |
| 208 SECURITY_STATUS ncrypt_status; | |
| 209 PRBool doDerEncode = PR_FALSE; | |
| 210 SECItem hashItem; | |
| 211 DWORD signatureLen = 0; | |
| 212 DWORD dwFlags = 0; | |
| 213 VOID *pPaddingInfo = NULL; | |
| 214 | |
| 215 /* Always encode using PKCS#1 block type. */ | |
| 216 BCRYPT_PKCS1_PADDING_INFO rsaPaddingInfo; | |
| 217 | |
| 218 if (key->dwKeySpec != CERT_NCRYPT_KEY_SPEC) { | |
| 219 PR_SetError(SEC_ERROR_LIBRARY_FAILURE, 0); | |
| 220 return SECFailure; | |
| 221 } | |
| 222 if (ssl_InitCng() != SECSuccess) { | |
| 223 PR_SetError(SEC_ERROR_LIBRARY_FAILURE, 0); | |
| 224 return SECFailure; | |
| 225 } | |
| 226 | |
| 227 switch (keyType) { | |
| 228 case rsaKey: | |
| 229 switch (hash->hashAlg) { | |
| 230 case SEC_OID_UNKNOWN: | |
| 231 /* No OID/encoded DigestInfo. */ | |
| 232 rsaPaddingInfo.pszAlgId = NULL; | |
| 233 break; | |
| 234 case SEC_OID_SHA1: | |
| 235 rsaPaddingInfo.pszAlgId = BCRYPT_SHA1_ALGORITHM; | |
| 236 break; | |
| 237 case SEC_OID_SHA256: | |
| 238 rsaPaddingInfo.pszAlgId = BCRYPT_SHA256_ALGORITHM; | |
| 239 break; | |
| 240 case SEC_OID_SHA384: | |
| 241 rsaPaddingInfo.pszAlgId = BCRYPT_SHA384_ALGORITHM; | |
| 242 break; | |
| 243 case SEC_OID_SHA512: | |
| 244 rsaPaddingInfo.pszAlgId = BCRYPT_SHA512_ALGORITHM; | |
| 245 break; | |
| 246 default: | |
| 247 PORT_SetError(SSL_ERROR_UNSUPPORTED_HASH_ALGORITHM); | |
| 248 return SECFailure; | |
| 249 } | |
| 250 hashItem.data = hash->u.raw; | |
| 251 hashItem.len = hash->len; | |
| 252 dwFlags = BCRYPT_PAD_PKCS1; | |
| 253 pPaddingInfo = &rsaPaddingInfo; | |
| 254 break; | |
| 255 case dsaKey: | |
| 256 case ecKey: | |
| 257 if (keyType == ecKey) { | |
| 258 doDerEncode = PR_TRUE; | |
| 259 } else { | |
| 260 doDerEncode = isTLS; | |
| 261 } | |
| 262 if (hash->hashAlg == SEC_OID_UNKNOWN) { | |
| 263 hashItem.data = hash->u.s.sha; | |
| 264 hashItem.len = sizeof(hash->u.s.sha); | |
| 265 } else { | |
| 266 hashItem.data = hash->u.raw; | |
| 267 hashItem.len = hash->len; | |
| 268 } | |
| 269 break; | |
| 270 default: | |
| 271 PORT_SetError(SEC_ERROR_INVALID_KEY); | |
| 272 goto done; | |
| 273 } | |
| 274 PRINT_BUF(60, (NULL, "hash(es) to be signed", hashItem.data, hashItem.len)); | |
| 275 | |
| 276 ncrypt_status = (*pNCryptSignHash)(key->hNCryptKey, pPaddingInfo, | |
| 277 (PBYTE)hashItem.data, hashItem.len, | |
| 278 NULL, 0, &signatureLen, dwFlags); | |
| 279 if (FAILED(ncrypt_status) || signatureLen == 0) { | |
| 280 PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, ncrypt_status); | |
| 281 goto done; | |
| 282 } | |
| 283 | |
| 284 buf->data = (unsigned char *)PORT_Alloc(signatureLen); | |
| 285 if (!buf->data) { | |
| 286 goto done; /* error code was set. */ | |
| 287 } | |
| 288 | |
| 289 ncrypt_status = (*pNCryptSignHash)(key->hNCryptKey, pPaddingInfo, | |
| 290 (PBYTE)hashItem.data, hashItem.len, | |
| 291 (PBYTE)buf->data, signatureLen, | |
| 292 &signatureLen, dwFlags); | |
| 293 if (FAILED(ncrypt_status) || signatureLen == 0) { | |
| 294 PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, ncrypt_status); | |
| 295 goto done; | |
| 296 } | |
| 297 | |
| 298 buf->len = signatureLen; | |
| 299 | |
| 300 if (doDerEncode) { | |
| 301 SECItem derSig = {siBuffer, NULL, 0}; | |
| 302 | |
| 303 /* This also works for an ECDSA signature */ | |
| 304 rv = DSAU_EncodeDerSigWithLen(&derSig, buf, buf->len); | |
| 305 if (rv == SECSuccess) { | |
| 306 PORT_Free(buf->data); /* discard unencoded signature. */ | |
| 307 *buf = derSig; /* give caller encoded signature. */ | |
| 308 } else if (derSig.data) { | |
| 309 PORT_Free(derSig.data); | |
| 310 } | |
| 311 } else { | |
| 312 rv = SECSuccess; | |
| 313 } | |
| 314 | |
| 315 PRINT_BUF(60, (NULL, "signed hashes", buf->data, buf->len)); | |
| 316 | |
| 317 done: | |
| 318 if (rv != SECSuccess && buf->data) { | |
| 319 PORT_Free(buf->data); | |
| 320 buf->data = NULL; | |
| 321 buf->len = 0; | |
| 322 } | |
| 323 | |
| 324 return rv; | |
| 325 } | |
| 326 | |
| 327 static SECStatus | |
| 328 ssl3_CAPIPlatformSignHashes(SSL3Hashes *hash, PlatformKey key, SECItem *buf, | |
| 329 PRBool isTLS, KeyType keyType) | |
| 330 { | |
| 331 SECStatus rv = SECFailure; | |
| 332 PRBool doDerEncode = PR_FALSE; | |
| 333 SECItem hashItem; | |
| 334 DWORD argLen = 0; | |
| 335 DWORD signatureLen = 0; | |
| 336 ALG_ID hashAlg = 0; | |
| 337 HCRYPTHASH hHash = 0; | |
| 338 DWORD hashLen = 0; | |
| 339 unsigned int i = 0; | |
| 340 | |
| 341 buf->data = NULL; | |
| 342 | |
| 343 switch (hash->hashAlg) { | |
| 344 case SEC_OID_UNKNOWN: | |
| 345 hashAlg = 0; | |
| 346 break; | |
| 347 case SEC_OID_SHA1: | |
| 348 hashAlg = CALG_SHA1; | |
| 349 break; | |
| 350 case SEC_OID_SHA256: | |
| 351 hashAlg = CALG_SHA_256; | |
| 352 break; | |
| 353 case SEC_OID_SHA384: | |
| 354 hashAlg = CALG_SHA_384; | |
| 355 break; | |
| 356 case SEC_OID_SHA512: | |
| 357 hashAlg = CALG_SHA_512; | |
| 358 break; | |
| 359 default: | |
| 360 PORT_SetError(SSL_ERROR_UNSUPPORTED_HASH_ALGORITHM); | |
| 361 return SECFailure; | |
| 362 } | |
| 363 | |
| 364 switch (keyType) { | |
| 365 case rsaKey: | |
| 366 if (hashAlg == 0) { | |
| 367 hashAlg = CALG_SSL3_SHAMD5; | |
| 368 } | |
| 369 hashItem.data = hash->u.raw; | |
| 370 hashItem.len = hash->len; | |
| 371 break; | |
| 372 case dsaKey: | |
| 373 case ecKey: | |
| 374 if (keyType == ecKey) { | |
| 375 doDerEncode = PR_TRUE; | |
| 376 } else { | |
| 377 doDerEncode = isTLS; | |
| 378 } | |
| 379 if (hashAlg == 0) { | |
| 380 hashAlg = CALG_SHA1; | |
| 381 hashItem.data = hash->u.s.sha; | |
| 382 hashItem.len = sizeof(hash->u.s.sha); | |
| 383 } else { | |
| 384 hashItem.data = hash->u.raw; | |
| 385 hashItem.len = hash->len; | |
| 386 } | |
| 387 break; | |
| 388 default: | |
| 389 PORT_SetError(SEC_ERROR_INVALID_KEY); | |
| 390 goto done; | |
| 391 } | |
| 392 PRINT_BUF(60, (NULL, "hash(es) to be signed", hashItem.data, hashItem.len)); | |
| 393 | |
| 394 if (!CryptCreateHash(key->hCryptProv, hashAlg, 0, 0, &hHash)) { | |
| 395 PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, GetLastError()); | |
| 396 goto done; | |
| 397 } | |
| 398 argLen = sizeof(hashLen); | |
| 399 if (!CryptGetHashParam(hHash, HP_HASHSIZE, (BYTE*)&hashLen, &argLen, 0)) { | |
| 400 PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, GetLastError()); | |
| 401 goto done; | |
| 402 } | |
| 403 if (hashLen != hashItem.len) { | |
| 404 PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, 0); | |
| 405 goto done; | |
| 406 } | |
| 407 if (!CryptSetHashParam(hHash, HP_HASHVAL, (BYTE*)hashItem.data, 0)) { | |
| 408 PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, GetLastError()); | |
| 409 goto done; | |
| 410 } | |
| 411 if (!CryptSignHash(hHash, key->dwKeySpec, NULL, 0, | |
| 412 NULL, &signatureLen) || signatureLen == 0) { | |
| 413 PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, GetLastError()); | |
| 414 goto done; | |
| 415 } | |
| 416 buf->data = (unsigned char *)PORT_Alloc(signatureLen); | |
| 417 if (!buf->data) | |
| 418 goto done; /* error code was set. */ | |
| 419 | |
| 420 if (!CryptSignHash(hHash, key->dwKeySpec, NULL, 0, | |
| 421 (BYTE*)buf->data, &signatureLen)) { | |
| 422 PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, GetLastError()); | |
| 423 goto done; | |
| 424 } | |
| 425 buf->len = signatureLen; | |
| 426 | |
| 427 /* CryptoAPI signs in little-endian, so reverse */ | |
| 428 for (i = 0; i < buf->len / 2; ++i) { | |
| 429 unsigned char tmp = buf->data[i]; | |
| 430 buf->data[i] = buf->data[buf->len - 1 - i]; | |
| 431 buf->data[buf->len - 1 - i] = tmp; | |
| 432 } | |
| 433 if (doDerEncode) { | |
| 434 SECItem derSig = {siBuffer, NULL, 0}; | |
| 435 | |
| 436 /* This also works for an ECDSA signature */ | |
| 437 rv = DSAU_EncodeDerSigWithLen(&derSig, buf, buf->len); | |
| 438 if (rv == SECSuccess) { | |
| 439 PORT_Free(buf->data); /* discard unencoded signature. */ | |
| 440 *buf = derSig; /* give caller encoded signature. */ | |
| 441 } else if (derSig.data) { | |
| 442 PORT_Free(derSig.data); | |
| 443 } | |
| 444 } else { | |
| 445 rv = SECSuccess; | |
| 446 } | |
| 447 | |
| 448 PRINT_BUF(60, (NULL, "signed hashes", buf->data, buf->len)); | |
| 449 done: | |
| 450 if (hHash) | |
| 451 CryptDestroyHash(hHash); | |
| 452 if (rv != SECSuccess && buf->data) { | |
| 453 PORT_Free(buf->data); | |
| 454 buf->data = NULL; | |
| 455 } | |
| 456 return rv; | |
| 457 } | |
| 458 | |
| 459 SECStatus | |
| 460 ssl3_PlatformSignHashes(SSL3Hashes *hash, PlatformKey key, SECItem *buf, | |
| 461 PRBool isTLS, KeyType keyType) | |
| 462 { | |
| 463 if (key->dwKeySpec == CERT_NCRYPT_KEY_SPEC) { | |
| 464 return ssl3_CngPlatformSignHashes(hash, key, buf, isTLS, keyType); | |
| 465 } | |
| 466 return ssl3_CAPIPlatformSignHashes(hash, key, buf, isTLS, keyType); | |
| 467 } | |
| 468 | |
| 469 #elif defined(XP_MACOSX) | |
| 470 #include <Security/cssm.h> | |
| 471 | |
| 472 void | |
| 473 ssl_FreePlatformKey(PlatformKey key) | |
| 474 { | |
| 475 CFRelease(key); | |
| 476 } | |
| 477 | |
| 478 #define SSL_MAX_DIGEST_INFO_PREFIX 20 | |
| 479 | |
| 480 /* ssl3_GetDigestInfoPrefix sets |out| and |out_len| to point to a buffer that | |
| 481 * contains ASN.1 data that should be prepended to a hash of the given type in | |
| 482 * order to create a DigestInfo structure that is valid for use in a PKCS #1 | |
| 483 * v1.5 RSA signature. |out_len| will not be set to a value greater than | |
| 484 * SSL_MAX_DIGEST_INFO_PREFIX. */ | |
| 485 static SECStatus | |
| 486 ssl3_GetDigestInfoPrefix(SECOidTag hashAlg, | |
| 487 const SSL3Opaque** out, unsigned int *out_len) | |
| 488 { | |
| 489 /* These are the DER encoding of ASN.1 DigestInfo structures: | |
| 490 * DigestInfo ::= SEQUENCE { | |
| 491 * digestAlgorithm AlgorithmIdentifier, | |
| 492 * digest OCTET STRING | |
| 493 * } | |
| 494 * See PKCS #1 v2.2 Section 9.2, Note 1. | |
| 495 */ | |
| 496 static const unsigned char kSHA1[] = { | |
| 497 0x30, 0x21, 0x30, 0x09, 0x06, 0x05, 0x2b, 0x0e, | |
| 498 0x03, 0x02, 0x1a, 0x05, 0x00, 0x04, 0x14 | |
| 499 }; | |
| 500 static const unsigned char kSHA224[] = { | |
| 501 0x30, 0x2d, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, | |
| 502 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x04, 0x05, | |
| 503 0x00, 0x04, 0x1c | |
| 504 }; | |
| 505 static const unsigned char kSHA256[] = { | |
| 506 0x30, 0x31, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, | |
| 507 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x01, 0x05, | |
| 508 0x00, 0x04, 0x20 | |
| 509 }; | |
| 510 static const unsigned char kSHA384[] = { | |
| 511 0x30, 0x41, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, | |
| 512 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x02, 0x05, | |
| 513 0x00, 0x04, 0x30 | |
| 514 }; | |
| 515 static const unsigned char kSHA512[] = { | |
| 516 0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86, | |
| 517 0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x03, 0x05, | |
| 518 0x00, 0x04, 0x40 | |
| 519 }; | |
| 520 | |
| 521 switch (hashAlg) { | |
| 522 case SEC_OID_UNKNOWN: | |
| 523 *out_len = 0; | |
| 524 break; | |
| 525 case SEC_OID_SHA1: | |
| 526 *out = kSHA1; | |
| 527 *out_len = sizeof(kSHA1); | |
| 528 break; | |
| 529 case SEC_OID_SHA224: | |
| 530 *out = kSHA224; | |
| 531 *out_len = sizeof(kSHA224); | |
| 532 break; | |
| 533 case SEC_OID_SHA256: | |
| 534 *out = kSHA256; | |
| 535 *out_len = sizeof(kSHA256); | |
| 536 break; | |
| 537 case SEC_OID_SHA384: | |
| 538 *out = kSHA384; | |
| 539 *out_len = sizeof(kSHA384); | |
| 540 break; | |
| 541 case SEC_OID_SHA512: | |
| 542 *out = kSHA512; | |
| 543 *out_len = sizeof(kSHA512); | |
| 544 break; | |
| 545 default: | |
| 546 PORT_SetError(SSL_ERROR_UNSUPPORTED_HASH_ALGORITHM); | |
| 547 return SECFailure; | |
| 548 } | |
| 549 | |
| 550 return SECSuccess; | |
| 551 } | |
| 552 | |
| 553 /* Given the length of a raw DSA signature (consisting of two integers | |
| 554 * r and s), returns the maximum length of the DER encoding of the | |
| 555 * following structure: | |
| 556 * | |
| 557 * Dss-Sig-Value ::= SEQUENCE { | |
| 558 * r INTEGER, | |
| 559 * s INTEGER | |
| 560 * } | |
| 561 */ | |
| 562 static unsigned int | |
| 563 ssl3_DSAMaxDerEncodedLength(unsigned int rawDsaLen) | |
| 564 { | |
| 565 /* The length of one INTEGER. */ | |
| 566 unsigned int integerDerLen = rawDsaLen/2 + /* the integer itself */ | |
| 567 1 + /* additional zero byte if high bit is 1 */ | |
| 568 SEC_ASN1LengthLength(rawDsaLen/2 + 1) + /* length */ | |
| 569 1; /* INTEGER tag */ | |
| 570 | |
| 571 /* The length of two INTEGERs in a SEQUENCE */ | |
| 572 return 2 * integerDerLen + /* two INTEGERs */ | |
| 573 SEC_ASN1LengthLength(2 * integerDerLen) + /* length */ | |
| 574 1; /* SEQUENCE tag */ | |
| 575 } | |
| 576 | |
| 577 SECStatus | |
| 578 ssl3_PlatformSignHashes(SSL3Hashes *hash, PlatformKey key, SECItem *buf, | |
| 579 PRBool isTLS, KeyType keyType) | |
| 580 { | |
| 581 SECStatus rv = SECFailure; | |
| 582 PRBool doDerDecode = PR_FALSE; | |
| 583 unsigned int rawDsaLen; | |
| 584 unsigned int signatureLen; | |
| 585 OSStatus status = noErr; | |
| 586 CSSM_CSP_HANDLE cspHandle = 0; | |
| 587 const CSSM_KEY *cssmKey = NULL; | |
| 588 CSSM_ALGORITHMS sigAlg; | |
| 589 CSSM_ALGORITHMS digestAlg; | |
| 590 const CSSM_ACCESS_CREDENTIALS * cssmCreds = NULL; | |
| 591 CSSM_RETURN cssmRv; | |
| 592 CSSM_DATA hashData; | |
| 593 CSSM_DATA signatureData; | |
| 594 CSSM_CC_HANDLE cssmSignature = 0; | |
| 595 const SSL3Opaque* prefix; | |
| 596 unsigned int prefixLen; | |
| 597 SSL3Opaque prefixAndHash[SSL_MAX_DIGEST_INFO_PREFIX + HASH_LENGTH_MAX]; | |
| 598 | |
| 599 buf->data = NULL; | |
| 600 | |
| 601 status = SecKeyGetCSPHandle(key, &cspHandle); | |
| 602 if (status != noErr) { | |
| 603 PORT_SetError(SEC_ERROR_INVALID_KEY); | |
| 604 goto done; | |
| 605 } | |
| 606 | |
| 607 status = SecKeyGetCSSMKey(key, &cssmKey); | |
| 608 if (status != noErr || !cssmKey) { | |
| 609 PORT_SetError(SEC_ERROR_NO_KEY); | |
| 610 goto done; | |
| 611 } | |
| 612 | |
| 613 sigAlg = cssmKey->KeyHeader.AlgorithmId; | |
| 614 digestAlg = CSSM_ALGID_NONE; | |
| 615 | |
| 616 switch (keyType) { | |
| 617 case rsaKey: | |
| 618 PORT_Assert(sigAlg == CSSM_ALGID_RSA); | |
| 619 signatureLen = (cssmKey->KeyHeader.LogicalKeySizeInBits + 7) / 8; | |
| 620 if (ssl3_GetDigestInfoPrefix(hash->hashAlg, &prefix, &prefixLen) != | |
| 621 SECSuccess) { | |
| 622 goto done; | |
| 623 } | |
| 624 if (prefixLen + hash->len > sizeof(prefixAndHash)) { | |
| 625 PORT_SetError(SEC_ERROR_LIBRARY_FAILURE); | |
| 626 goto done; | |
| 627 } | |
| 628 memcpy(prefixAndHash, prefix, prefixLen); | |
| 629 memcpy(prefixAndHash + prefixLen, hash->u.raw, hash->len); | |
| 630 hashData.Data = prefixAndHash; | |
| 631 hashData.Length = prefixLen + hash->len; | |
| 632 break; | |
| 633 case dsaKey: | |
| 634 case ecKey: | |
| 635 /* SSL3 DSA signatures are raw, not DER-encoded. CSSM gives back | |
| 636 * DER-encoded signatures, so they must be decoded. */ | |
| 637 doDerDecode = (keyType == dsaKey) && !isTLS; | |
| 638 | |
| 639 /* Compute the maximum size of a DER-encoded signature: */ | |
| 640 if (keyType == ecKey) { | |
| 641 PORT_Assert(sigAlg == CSSM_ALGID_ECDSA); | |
| 642 /* LogicalKeySizeInBits is the size of an EC public key. But an | |
| 643 * ECDSA signature length depends on the size of the base | |
| 644 * point's order. For P-256, P-384, and P-521, these two sizes | |
| 645 * are the same. */ | |
| 646 rawDsaLen = | |
| 647 (cssmKey->KeyHeader.LogicalKeySizeInBits + 7) / 8 * 2; | |
| 648 } else { | |
| 649 /* TODO(davidben): Get the size of the subprime out of CSSM. For | |
| 650 * now, assume 160; Apple's implementation hardcodes it. */ | |
| 651 PORT_Assert(sigAlg == CSSM_ALGID_DSA); | |
| 652 rawDsaLen = 2 * (160 / 8); | |
| 653 } | |
| 654 signatureLen = ssl3_DSAMaxDerEncodedLength(rawDsaLen); | |
| 655 | |
| 656 /* SEC_OID_UNKNOWN is used to specify the MD5/SHA1 concatenated | |
| 657 * hash. In that case, we use just the SHA1 part. */ | |
| 658 if (hash->hashAlg == SEC_OID_UNKNOWN) { | |
| 659 hashData.Data = hash->u.s.sha; | |
| 660 hashData.Length = sizeof(hash->u.s.sha); | |
| 661 } else { | |
| 662 hashData.Data = hash->u.raw; | |
| 663 hashData.Length = hash->len; | |
| 664 } | |
| 665 break; | |
| 666 default: | |
| 667 PORT_SetError(SEC_ERROR_INVALID_KEY); | |
| 668 goto done; | |
| 669 } | |
| 670 PRINT_BUF(60, (NULL, "hash(es) to be signed", hashData.Data, hashData.Length
)); | |
| 671 | |
| 672 if (signatureLen == 0) { | |
| 673 PORT_SetError(SEC_ERROR_INVALID_KEY); | |
| 674 goto done; | |
| 675 } | |
| 676 | |
| 677 buf->data = (unsigned char *)PORT_Alloc(signatureLen); | |
| 678 if (!buf->data) | |
| 679 goto done; /* error code was set. */ | |
| 680 | |
| 681 /* TODO(rsleevi): Should it be kSecCredentialTypeNoUI? In Win32, at least, | |
| 682 * you can prevent the UI by setting the provider handle on the | |
| 683 * certificate to be opened with CRYPT_SILENT, but is there an equivalent? | |
| 684 */ | |
| 685 status = SecKeyGetCredentials(key, CSSM_ACL_AUTHORIZATION_SIGN, | |
| 686 kSecCredentialTypeDefault, &cssmCreds); | |
| 687 if (status != noErr) { | |
| 688 PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, status); | |
| 689 goto done; | |
| 690 } | |
| 691 | |
| 692 signatureData.Length = signatureLen; | |
| 693 signatureData.Data = (uint8*)buf->data; | |
| 694 | |
| 695 cssmRv = CSSM_CSP_CreateSignatureContext(cspHandle, sigAlg, cssmCreds, | |
| 696 cssmKey, &cssmSignature); | |
| 697 if (cssmRv) { | |
| 698 PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, cssmRv); | |
| 699 goto done; | |
| 700 } | |
| 701 | |
| 702 /* See "Apple Cryptographic Service Provider Functional Specification" */ | |
| 703 if (cssmKey->KeyHeader.AlgorithmId == CSSM_ALGID_RSA) { | |
| 704 /* To set RSA blinding for RSA keys */ | |
| 705 CSSM_CONTEXT_ATTRIBUTE blindingAttr; | |
| 706 blindingAttr.AttributeType = CSSM_ATTRIBUTE_RSA_BLINDING; | |
| 707 blindingAttr.AttributeLength = sizeof(uint32); | |
| 708 blindingAttr.Attribute.Uint32 = 1; | |
| 709 cssmRv = CSSM_UpdateContextAttributes(cssmSignature, 1, &blindingAttr); | |
| 710 if (cssmRv) { | |
| 711 PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, cssmRv); | |
| 712 goto done; | |
| 713 } | |
| 714 } | |
| 715 | |
| 716 cssmRv = CSSM_SignData(cssmSignature, &hashData, 1, digestAlg, | |
| 717 &signatureData); | |
| 718 if (cssmRv) { | |
| 719 PR_SetError(SSL_ERROR_SIGN_HASHES_FAILURE, cssmRv); | |
| 720 goto done; | |
| 721 } | |
| 722 buf->len = signatureData.Length; | |
| 723 | |
| 724 if (doDerDecode) { | |
| 725 SECItem* rawSig = DSAU_DecodeDerSigToLen(buf, rawDsaLen); | |
| 726 if (rawSig != NULL) { | |
| 727 PORT_Free(buf->data); /* discard encoded signature. */ | |
| 728 *buf = *rawSig; /* give caller unencoded signature. */ | |
| 729 PORT_Free(rawSig); | |
| 730 rv = SECSuccess; | |
| 731 } | |
| 732 } else { | |
| 733 rv = SECSuccess; | |
| 734 } | |
| 735 | |
| 736 PRINT_BUF(60, (NULL, "signed hashes", buf->data, buf->len)); | |
| 737 done: | |
| 738 /* cspHandle, cssmKey, and cssmCreds are owned by the SecKeyRef and | |
| 739 * should not be freed. When the PlatformKey is freed, they will be | |
| 740 * released. | |
| 741 */ | |
| 742 if (cssmSignature) | |
| 743 CSSM_DeleteContext(cssmSignature); | |
| 744 | |
| 745 if (rv != SECSuccess && buf->data) { | |
| 746 PORT_Free(buf->data); | |
| 747 buf->data = NULL; | |
| 748 } | |
| 749 return rv; | |
| 750 } | |
| 751 #else | |
| 752 void | |
| 753 ssl_FreePlatformKey(PlatformKey key) | |
| 754 { | |
| 755 } | |
| 756 | |
| 757 SECStatus | |
| 758 ssl3_PlatformSignHashes(SSL3Hashes *hash, PlatformKey key, SECItem *buf, | |
| 759 PRBool isTLS, KeyType keyType) | |
| 760 { | |
| 761 PORT_SetError(PR_NOT_IMPLEMENTED_ERROR); | |
| 762 return SECFailure; | |
| 763 } | |
| 764 #endif | |
| 765 | |
| 766 #endif /* NSS_PLATFORM_CLIENT_AUTH */ | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 1844813002:
Uprev NSS to 3.23 on iOS (Closed)
Base URL: https://chromium.googlesource.com/chromium/src.git@master