| OLD | NEW |
|---|
| (Empty) |
| 1 // Copyright 2014 The Chromium Authors. All rights reserved. | |
| 2 // Use of this source code is governed by a BSD-style license that can be | |
| 3 // found in the LICENSE file. | |
| 4 | |
| 5 #include "net/ssl/openssl_platform_key.h" | |
| 6 | |
| 7 #include <windows.h> | |
| 8 #include <NCrypt.h> | |
| 9 | |
| 10 #include <string.h> | |
| 11 | |
| 12 #include <algorithm> | |
| 13 #include <vector> | |
| 14 | |
| 15 #include <openssl/bn.h> | |
| 16 #include <openssl/digest.h> | |
| 17 #include <openssl/ec_key.h> | |
| 18 #include <openssl/err.h> | |
| 19 #include <openssl/engine.h> | |
| 20 #include <openssl/evp.h> | |
| 21 #include <openssl/md5.h> | |
| 22 #include <openssl/obj_mac.h> | |
| 23 #include <openssl/rsa.h> | |
| 24 #include <openssl/sha.h> | |
| 25 | |
| 26 #include "base/debug/debugger.h" | |
| 27 #include "base/debug/stack_trace.h" | |
| 28 #include "base/lazy_instance.h" | |
| 29 #include "base/logging.h" | |
| 30 #include "base/memory/scoped_ptr.h" | |
| 31 #include "base/profiler/scoped_tracker.h" | |
| 32 #include "base/win/windows_version.h" | |
| 33 #include "crypto/scoped_capi_types.h" | |
| 34 #include "crypto/wincrypt_shim.h" | |
| 35 #include "net/base/net_errors.h" | |
| 36 #include "net/cert/x509_certificate.h" | |
| 37 #include "net/ssl/openssl_ssl_util.h" | |
| 38 | |
| 39 namespace net { | |
| 40 | |
| 41 namespace { | |
| 42 | |
| 43 using NCryptFreeObjectFunc = SECURITY_STATUS(WINAPI*)(NCRYPT_HANDLE); | |
| 44 using NCryptGetPropertyFunc = | |
| 45 SECURITY_STATUS(WINAPI*)(NCRYPT_HANDLE, // hObject | |
| 46 LPCWSTR, // pszProperty | |
| 47 PBYTE, // pbOutput | |
| 48 DWORD, // cbOutput | |
| 49 DWORD*, // pcbResult | |
| 50 DWORD); // dwFlags | |
| 51 using NCryptSignHashFunc = | |
| 52 SECURITY_STATUS(WINAPI*)(NCRYPT_KEY_HANDLE, // hKey | |
| 53 VOID*, // pPaddingInfo | |
| 54 PBYTE, // pbHashValue | |
| 55 DWORD, // cbHashValue | |
| 56 PBYTE, // pbSignature | |
| 57 DWORD, // cbSignature | |
| 58 DWORD*, // pcbResult | |
| 59 DWORD); // dwFlags | |
| 60 | |
| 61 class CNGFunctions { | |
| 62 public: | |
| 63 CNGFunctions() | |
| 64 : ncrypt_free_object_(nullptr), | |
| 65 ncrypt_get_property_(nullptr), | |
| 66 ncrypt_sign_hash_(nullptr) { | |
| 67 HMODULE ncrypt = GetModuleHandle(L"ncrypt.dll"); | |
| 68 if (ncrypt != nullptr) { | |
| 69 ncrypt_free_object_ = reinterpret_cast<NCryptFreeObjectFunc>( | |
| 70 GetProcAddress(ncrypt, "NCryptFreeObject")); | |
| 71 ncrypt_get_property_ = reinterpret_cast<NCryptGetPropertyFunc>( | |
| 72 GetProcAddress(ncrypt, "NCryptGetProperty")); | |
| 73 ncrypt_sign_hash_ = reinterpret_cast<NCryptSignHashFunc>( | |
| 74 GetProcAddress(ncrypt, "NCryptSignHash")); | |
| 75 } | |
| 76 } | |
| 77 | |
| 78 NCryptFreeObjectFunc ncrypt_free_object() const { | |
| 79 return ncrypt_free_object_; | |
| 80 } | |
| 81 | |
| 82 NCryptGetPropertyFunc ncrypt_get_property() const { | |
| 83 return ncrypt_get_property_; | |
| 84 } | |
| 85 | |
| 86 NCryptSignHashFunc ncrypt_sign_hash() const { return ncrypt_sign_hash_; } | |
| 87 | |
| 88 private: | |
| 89 NCryptFreeObjectFunc ncrypt_free_object_; | |
| 90 NCryptGetPropertyFunc ncrypt_get_property_; | |
| 91 NCryptSignHashFunc ncrypt_sign_hash_; | |
| 92 }; | |
| 93 | |
| 94 base::LazyInstance<CNGFunctions>::Leaky g_cng_functions = | |
| 95 LAZY_INSTANCE_INITIALIZER; | |
| 96 | |
| 97 struct CERT_KEY_CONTEXTDeleter { | |
| 98 void operator()(PCERT_KEY_CONTEXT key) { | |
| 99 if (key->dwKeySpec == CERT_NCRYPT_KEY_SPEC) { | |
| 100 g_cng_functions.Get().ncrypt_free_object()(key->hNCryptKey); | |
| 101 } else { | |
| 102 CryptReleaseContext(key->hCryptProv, 0); | |
| 103 } | |
| 104 delete key; | |
| 105 } | |
| 106 }; | |
| 107 | |
| 108 using ScopedCERT_KEY_CONTEXT = | |
| 109 scoped_ptr<CERT_KEY_CONTEXT, CERT_KEY_CONTEXTDeleter>; | |
| 110 | |
| 111 // KeyExData contains the data that is contained in the EX_DATA of the | |
| 112 // RSA and ECDSA objects that are created to wrap Windows system keys. | |
| 113 struct KeyExData { | |
| 114 KeyExData(ScopedCERT_KEY_CONTEXT key, DWORD key_length) | |
| 115 : key(key.Pass()), key_length(key_length) {} | |
| 116 | |
| 117 ScopedCERT_KEY_CONTEXT key; | |
| 118 DWORD key_length; | |
| 119 }; | |
| 120 | |
| 121 // ExDataDup is called when one of the RSA or EC_KEY objects is | |
| 122 // duplicated. This is not supported and should never happen. | |
| 123 int ExDataDup(CRYPTO_EX_DATA* to, | |
| 124 const CRYPTO_EX_DATA* from, | |
| 125 void** from_d, | |
| 126 int idx, | |
| 127 long argl, | |
| 128 void* argp) { | |
| 129 CHECK_EQ((void*)nullptr, *from_d); | |
| 130 return 0; | |
| 131 } | |
| 132 | |
| 133 // ExDataFree is called when one of the RSA or EC_KEY objects is freed. | |
| 134 void ExDataFree(void* parent, | |
| 135 void* ptr, | |
| 136 CRYPTO_EX_DATA* ex_data, | |
| 137 int idx, | |
| 138 long argl, | |
| 139 void* argp) { | |
| 140 KeyExData* data = reinterpret_cast<KeyExData*>(ptr); | |
| 141 delete data; | |
| 142 } | |
| 143 | |
| 144 extern const RSA_METHOD win_rsa_method; | |
| 145 extern const ECDSA_METHOD win_ecdsa_method; | |
| 146 | |
| 147 // BoringSSLEngine is a BoringSSL ENGINE that implements RSA and ECDSA | |
| 148 // by forwarding the requested operations to CAPI or CNG. | |
| 149 class BoringSSLEngine { | |
| 150 public: | |
| 151 BoringSSLEngine() | |
| 152 : rsa_index_(RSA_get_ex_new_index(0 /* argl */, | |
| 153 nullptr /* argp */, | |
| 154 nullptr /* new_func */, | |
| 155 ExDataDup, | |
| 156 ExDataFree)), | |
| 157 ec_key_index_(EC_KEY_get_ex_new_index(0 /* argl */, | |
| 158 nullptr /* argp */, | |
| 159 nullptr /* new_func */, | |
| 160 ExDataDup, | |
| 161 ExDataFree)), | |
| 162 engine_(ENGINE_new()) { | |
| 163 ENGINE_set_RSA_method(engine_, &win_rsa_method, sizeof(win_rsa_method)); | |
| 164 ENGINE_set_ECDSA_method(engine_, &win_ecdsa_method, | |
| 165 sizeof(win_ecdsa_method)); | |
| 166 } | |
| 167 | |
| 168 int rsa_ex_index() const { return rsa_index_; } | |
| 169 int ec_key_ex_index() const { return ec_key_index_; } | |
| 170 | |
| 171 const ENGINE* engine() const { return engine_; } | |
| 172 | |
| 173 private: | |
| 174 const int rsa_index_; | |
| 175 const int ec_key_index_; | |
| 176 ENGINE* const engine_; | |
| 177 }; | |
| 178 | |
| 179 base::LazyInstance<BoringSSLEngine>::Leaky global_boringssl_engine = | |
| 180 LAZY_INSTANCE_INITIALIZER; | |
| 181 | |
| 182 // Custom RSA_METHOD that uses the platform APIs for signing. | |
| 183 | |
| 184 const KeyExData* RsaGetExData(const RSA* rsa) { | |
| 185 return reinterpret_cast<const KeyExData*>( | |
| 186 RSA_get_ex_data(rsa, global_boringssl_engine.Get().rsa_ex_index())); | |
| 187 } | |
| 188 | |
| 189 size_t RsaMethodSize(const RSA* rsa) { | |
| 190 const KeyExData* ex_data = RsaGetExData(rsa); | |
| 191 return (ex_data->key_length + 7) / 8; | |
| 192 } | |
| 193 | |
| 194 int RsaMethodSign(int hash_nid, | |
| 195 const uint8_t* in, | |
| 196 unsigned in_len, | |
| 197 uint8_t* out, | |
| 198 unsigned* out_len, | |
| 199 const RSA* rsa) { | |
| 200 // TODO(vadimt): Remove ScopedTracker below once crbug.com/424386 is fixed. | |
| 201 tracked_objects::ScopedTracker tracking_profile( | |
| 202 FROM_HERE_WITH_EXPLICIT_FUNCTION("424386 RsaMethodSign")); | |
| 203 | |
| 204 // TODO(davidben): Switch BoringSSL's sign hook to using size_t rather than | |
| 205 // unsigned. | |
| 206 const KeyExData* ex_data = RsaGetExData(rsa); | |
| 207 if (!ex_data) { | |
| 208 NOTREACHED(); | |
| 209 OPENSSL_PUT_ERROR(RSA, RSA_sign, ERR_R_INTERNAL_ERROR); | |
| 210 return 0; | |
| 211 } | |
| 212 | |
| 213 if (ex_data->key->dwKeySpec == CERT_NCRYPT_KEY_SPEC) { | |
| 214 BCRYPT_PKCS1_PADDING_INFO rsa_padding_info; | |
| 215 switch (hash_nid) { | |
| 216 case NID_md5_sha1: | |
| 217 rsa_padding_info.pszAlgId = nullptr; | |
| 218 break; | |
| 219 case NID_sha1: | |
| 220 rsa_padding_info.pszAlgId = BCRYPT_SHA1_ALGORITHM; | |
| 221 break; | |
| 222 case NID_sha256: | |
| 223 rsa_padding_info.pszAlgId = BCRYPT_SHA256_ALGORITHM; | |
| 224 break; | |
| 225 case NID_sha384: | |
| 226 rsa_padding_info.pszAlgId = BCRYPT_SHA384_ALGORITHM; | |
| 227 break; | |
| 228 case NID_sha512: | |
| 229 rsa_padding_info.pszAlgId = BCRYPT_SHA512_ALGORITHM; | |
| 230 break; | |
| 231 default: | |
| 232 OPENSSL_PUT_ERROR(RSA, RSA_sign, RSA_R_UNKNOWN_ALGORITHM_TYPE); | |
| 233 return 0; | |
| 234 } | |
| 235 | |
| 236 DWORD signature_len; | |
| 237 SECURITY_STATUS ncrypt_status = g_cng_functions.Get().ncrypt_sign_hash()( | |
| 238 ex_data->key->hNCryptKey, &rsa_padding_info, const_cast<PBYTE>(in), | |
| 239 in_len, out, RSA_size(rsa), &signature_len, BCRYPT_PAD_PKCS1); | |
| 240 if (FAILED(ncrypt_status) || signature_len == 0) { | |
| 241 OpenSSLPutNetError(FROM_HERE, ERR_SSL_CLIENT_AUTH_SIGNATURE_FAILED); | |
| 242 return 0; | |
| 243 } | |
| 244 *out_len = signature_len; | |
| 245 return 1; | |
| 246 } | |
| 247 | |
| 248 ALG_ID hash_alg; | |
| 249 switch (hash_nid) { | |
| 250 case NID_md5_sha1: | |
| 251 hash_alg = CALG_SSL3_SHAMD5; | |
| 252 break; | |
| 253 case NID_sha1: | |
| 254 hash_alg = CALG_SHA1; | |
| 255 break; | |
| 256 case NID_sha256: | |
| 257 hash_alg = CALG_SHA_256; | |
| 258 break; | |
| 259 case NID_sha384: | |
| 260 hash_alg = CALG_SHA_384; | |
| 261 break; | |
| 262 case NID_sha512: | |
| 263 hash_alg = CALG_SHA_512; | |
| 264 break; | |
| 265 default: | |
| 266 OPENSSL_PUT_ERROR(RSA, RSA_sign, RSA_R_UNKNOWN_ALGORITHM_TYPE); | |
| 267 return 0; | |
| 268 } | |
| 269 | |
| 270 HCRYPTHASH hash; | |
| 271 if (!CryptCreateHash(ex_data->key->hCryptProv, hash_alg, 0, 0, &hash)) { | |
| 272 PLOG(ERROR) << "CreateCreateHash failed"; | |
| 273 OpenSSLPutNetError(FROM_HERE, ERR_SSL_CLIENT_AUTH_SIGNATURE_FAILED); | |
| 274 return 0; | |
| 275 } | |
| 276 DWORD hash_len; | |
| 277 DWORD arg_len = sizeof(hash_len); | |
| 278 if (!CryptGetHashParam(hash, HP_HASHSIZE, reinterpret_cast<BYTE*>(&hash_len), | |
| 279 &arg_len, 0)) { | |
| 280 PLOG(ERROR) << "CryptGetHashParam HP_HASHSIZE failed"; | |
| 281 OpenSSLPutNetError(FROM_HERE, ERR_SSL_CLIENT_AUTH_SIGNATURE_FAILED); | |
| 282 return 0; | |
| 283 } | |
| 284 if (hash_len != in_len) { | |
| 285 OpenSSLPutNetError(FROM_HERE, ERR_SSL_CLIENT_AUTH_SIGNATURE_FAILED); | |
| 286 return 0; | |
| 287 } | |
| 288 if (!CryptSetHashParam(hash, HP_HASHVAL, const_cast<BYTE*>(in), 0)) { | |
| 289 PLOG(ERROR) << "CryptSetHashParam HP_HASHVAL failed"; | |
| 290 OpenSSLPutNetError(FROM_HERE, ERR_SSL_CLIENT_AUTH_SIGNATURE_FAILED); | |
| 291 return 0; | |
| 292 } | |
| 293 DWORD signature_len = RSA_size(rsa); | |
| 294 if (!CryptSignHash(hash, ex_data->key->dwKeySpec, nullptr, 0, out, | |
| 295 &signature_len)) { | |
| 296 PLOG(ERROR) << "CryptSignHash failed"; | |
| 297 OpenSSLPutNetError(FROM_HERE, ERR_SSL_CLIENT_AUTH_SIGNATURE_FAILED); | |
| 298 return 0; | |
| 299 } | |
| 300 | |
| 301 /* CryptoAPI signs in little-endian, so reverse it. */ | |
| 302 std::reverse(out, out + signature_len); | |
| 303 *out_len = signature_len; | |
| 304 return 1; | |
| 305 } | |
| 306 | |
| 307 int RsaMethodEncrypt(RSA* rsa, | |
| 308 size_t* out_len, | |
| 309 uint8_t* out, | |
| 310 size_t max_out, | |
| 311 const uint8_t* in, | |
| 312 size_t in_len, | |
| 313 int padding) { | |
| 314 NOTIMPLEMENTED(); | |
| 315 OPENSSL_PUT_ERROR(RSA, encrypt, RSA_R_UNKNOWN_ALGORITHM_TYPE); | |
| 316 return 0; | |
| 317 } | |
| 318 | |
| 319 int RsaMethodSignRaw(RSA* rsa, | |
| 320 size_t* out_len, | |
| 321 uint8_t* out, | |
| 322 size_t max_out, | |
| 323 const uint8_t* in, | |
| 324 size_t in_len, | |
| 325 int padding) { | |
| 326 NOTIMPLEMENTED(); | |
| 327 OPENSSL_PUT_ERROR(RSA, encrypt, RSA_R_UNKNOWN_ALGORITHM_TYPE); | |
| 328 return 0; | |
| 329 } | |
| 330 | |
| 331 int RsaMethodDecrypt(RSA* rsa, | |
| 332 size_t* out_len, | |
| 333 uint8_t* out, | |
| 334 size_t max_out, | |
| 335 const uint8_t* in, | |
| 336 size_t in_len, | |
| 337 int padding) { | |
| 338 NOTIMPLEMENTED(); | |
| 339 OPENSSL_PUT_ERROR(RSA, decrypt, RSA_R_UNKNOWN_ALGORITHM_TYPE); | |
| 340 return 0; | |
| 341 } | |
| 342 | |
| 343 int RsaMethodVerifyRaw(RSA* rsa, | |
| 344 size_t* out_len, | |
| 345 uint8_t* out, | |
| 346 size_t max_out, | |
| 347 const uint8_t* in, | |
| 348 size_t in_len, | |
| 349 int padding) { | |
| 350 NOTIMPLEMENTED(); | |
| 351 OPENSSL_PUT_ERROR(RSA, verify_raw, RSA_R_UNKNOWN_ALGORITHM_TYPE); | |
| 352 return 0; | |
| 353 } | |
| 354 | |
| 355 int RsaMethodSupportsDigest(const RSA* rsa, const EVP_MD* md) { | |
| 356 const KeyExData* ex_data = RsaGetExData(rsa); | |
| 357 if (!ex_data) { | |
| 358 NOTREACHED(); | |
| 359 return 0; | |
| 360 } | |
| 361 | |
| 362 int hash_nid = EVP_MD_type(md); | |
| 363 if (ex_data->key->dwKeySpec == CERT_NCRYPT_KEY_SPEC) { | |
| 364 // Only hashes which appear in RsaSignPKCS1 are supported. | |
| 365 if (hash_nid != NID_sha1 && hash_nid != NID_sha256 && | |
| 366 hash_nid != NID_sha384 && hash_nid != NID_sha512) { | |
| 367 return 0; | |
| 368 } | |
| 369 | |
| 370 // If the key is a 1024-bit RSA, assume conservatively that it may only be | |
| 371 // able to sign SHA-1 hashes. This is the case for older Estonian ID cards | |
| 372 // that have 1024-bit RSA keys. | |
| 373 // | |
| 374 // CNG does provide NCryptIsAlgSupported and NCryptEnumAlgorithms functions, | |
| 375 // however they seem to both return NTE_NOT_SUPPORTED when querying the | |
| 376 // NCRYPT_PROV_HANDLE at the key's NCRYPT_PROVIDER_HANDLE_PROPERTY. | |
| 377 if (ex_data->key_length <= 1024 && hash_nid != NID_sha1) | |
| 378 return 0; | |
| 379 | |
| 380 return 1; | |
| 381 } else { | |
| 382 // If the key is in CAPI, assume conservatively that the CAPI service | |
| 383 // provider may only be able to sign SHA-1 hashes. | |
| 384 return hash_nid == NID_sha1; | |
| 385 } | |
| 386 } | |
| 387 | |
| 388 const RSA_METHOD win_rsa_method = { | |
| 389 { | |
| 390 0, // references | |
| 391 1, // is_static | |
| 392 }, | |
| 393 nullptr, // app_data | |
| 394 | |
| 395 nullptr, // init | |
| 396 nullptr, // finish | |
| 397 RsaMethodSize, | |
| 398 RsaMethodSign, | |
| 399 nullptr, // verify | |
| 400 RsaMethodEncrypt, | |
| 401 RsaMethodSignRaw, | |
| 402 RsaMethodDecrypt, | |
| 403 RsaMethodVerifyRaw, | |
| 404 nullptr, // private_transform | |
| 405 nullptr, // mod_exp | |
| 406 nullptr, // bn_mod_exp | |
| 407 RSA_FLAG_OPAQUE, | |
| 408 nullptr, // keygen | |
| 409 RsaMethodSupportsDigest, | |
| 410 }; | |
| 411 | |
| 412 // Custom ECDSA_METHOD that uses the platform APIs. | |
| 413 // Note that for now, only signing through ECDSA_sign() is really supported. | |
| 414 // all other method pointers are either stubs returning errors, or no-ops. | |
| 415 | |
| 416 const KeyExData* EcKeyGetExData(const EC_KEY* ec_key) { | |
| 417 return reinterpret_cast<const KeyExData*>(EC_KEY_get_ex_data( | |
| 418 ec_key, global_boringssl_engine.Get().ec_key_ex_index())); | |
| 419 } | |
| 420 | |
| 421 size_t EcdsaMethodGroupOrderSize(const EC_KEY* ec_key) { | |
| 422 const KeyExData* ex_data = EcKeyGetExData(ec_key); | |
| 423 // Windows doesn't distinguish the sizes of the curve's degree (which | |
| 424 // determines the size of a point on the curve) and the base point's order | |
| 425 // (which determines the size of a scalar). For P-256, P-384, and P-521, these | |
| 426 // two sizes are the same. | |
| 427 // | |
| 428 // See | |
| 429 // http://msdn.microsoft.com/en-us/library/windows/desktop/aa375520(v=vs.85).a
spx | |
| 430 // which uses the same length for both. | |
| 431 return (ex_data->key_length + 7) / 8; | |
| 432 } | |
| 433 | |
| 434 int EcdsaMethodSign(const uint8_t* digest, | |
| 435 size_t digest_len, | |
| 436 uint8_t* out_sig, | |
| 437 unsigned int* out_sig_len, | |
| 438 EC_KEY* ec_key) { | |
| 439 // TODO(vadimt): Remove ScopedTracker below once crbug.com/424386 is fixed. | |
| 440 tracked_objects::ScopedTracker tracking_profile( | |
| 441 FROM_HERE_WITH_EXPLICIT_FUNCTION("424386 EcdsaMethodSign")); | |
| 442 | |
| 443 const KeyExData* ex_data = EcKeyGetExData(ec_key); | |
| 444 // Only CNG supports ECDSA. | |
| 445 if (!ex_data || ex_data->key->dwKeySpec != CERT_NCRYPT_KEY_SPEC) { | |
| 446 NOTREACHED(); | |
| 447 OPENSSL_PUT_ERROR(RSA, sign_raw, ERR_R_INTERNAL_ERROR); | |
| 448 return 0; | |
| 449 } | |
| 450 | |
| 451 size_t degree = (ex_data->key_length + 7) / 8; | |
| 452 if (degree == 0) { | |
| 453 NOTREACHED(); | |
| 454 OpenSSLPutNetError(FROM_HERE, ERR_SSL_CLIENT_AUTH_SIGNATURE_FAILED); | |
| 455 return 0; | |
| 456 } | |
| 457 std::vector<uint8_t> raw_sig(degree * 2); | |
| 458 | |
| 459 DWORD signature_len; | |
| 460 SECURITY_STATUS ncrypt_status = g_cng_functions.Get().ncrypt_sign_hash()( | |
| 461 ex_data->key->hNCryptKey, nullptr, const_cast<PBYTE>(digest), digest_len, | |
| 462 &raw_sig[0], raw_sig.size(), &signature_len, 0); | |
| 463 if (FAILED(ncrypt_status) || signature_len != raw_sig.size()) { | |
| 464 OpenSSLPutNetError(FROM_HERE, ERR_SSL_CLIENT_AUTH_SIGNATURE_FAILED); | |
| 465 return 0; | |
| 466 } | |
| 467 | |
| 468 // Convert the RAW ECDSA signature to a DER-encoded ECDSA-Sig-Value. | |
| 469 crypto::ScopedECDSA_SIG sig(ECDSA_SIG_new()); | |
| 470 if (!sig) { | |
| 471 OpenSSLPutNetError(FROM_HERE, ERR_SSL_CLIENT_AUTH_SIGNATURE_FAILED); | |
| 472 return 0; | |
| 473 } | |
| 474 sig->r = BN_bin2bn(&raw_sig[0], degree, nullptr); | |
| 475 sig->s = BN_bin2bn(&raw_sig[degree], degree, nullptr); | |
| 476 if (!sig->r || !sig->s) { | |
| 477 OpenSSLPutNetError(FROM_HERE, ERR_SSL_CLIENT_AUTH_SIGNATURE_FAILED); | |
| 478 return 0; | |
| 479 } | |
| 480 | |
| 481 // Ensure the DER-encoded signature fits in the bounds. | |
| 482 int len = i2d_ECDSA_SIG(sig.get(), nullptr); | |
| 483 if (len < 0 || static_cast<size_t>(len) > ECDSA_size(ec_key)) { | |
| 484 OpenSSLPutNetError(FROM_HERE, ERR_SSL_CLIENT_AUTH_SIGNATURE_FAILED); | |
| 485 return 0; | |
| 486 } | |
| 487 | |
| 488 len = i2d_ECDSA_SIG(sig.get(), &out_sig); | |
| 489 if (len < 0) { | |
| 490 OpenSSLPutNetError(FROM_HERE, ERR_SSL_CLIENT_AUTH_SIGNATURE_FAILED); | |
| 491 return 0; | |
| 492 } | |
| 493 *out_sig_len = len; | |
| 494 return 1; | |
| 495 } | |
| 496 | |
| 497 int EcdsaMethodVerify(const uint8_t* digest, | |
| 498 size_t digest_len, | |
| 499 const uint8_t* sig, | |
| 500 size_t sig_len, | |
| 501 EC_KEY* eckey) { | |
| 502 NOTIMPLEMENTED(); | |
| 503 OPENSSL_PUT_ERROR(ECDSA, ECDSA_do_verify, ECDSA_R_NOT_IMPLEMENTED); | |
| 504 return 0; | |
| 505 } | |
| 506 | |
| 507 const ECDSA_METHOD win_ecdsa_method = { | |
| 508 { | |
| 509 0, // references | |
| 510 1, // is_static | |
| 511 }, | |
| 512 nullptr, // app_data | |
| 513 | |
| 514 nullptr, // init | |
| 515 nullptr, // finish | |
| 516 EcdsaMethodGroupOrderSize, | |
| 517 EcdsaMethodSign, | |
| 518 EcdsaMethodVerify, | |
| 519 ECDSA_FLAG_OPAQUE, | |
| 520 }; | |
| 521 | |
| 522 // Determines the key type and length of |key|. The type is returned as an | |
| 523 // OpenSSL EVP_PKEY type. The key length for RSA key is the size of the RSA | |
| 524 // modulus in bits. For an ECDSA key, it is the number of bits to represent the | |
| 525 // group order. It returns true on success and false on failure. | |
| 526 bool GetKeyInfo(PCERT_KEY_CONTEXT key, int* out_type, DWORD* out_length) { | |
| 527 if (key->dwKeySpec == CERT_NCRYPT_KEY_SPEC) { | |
| 528 DWORD prop_len; | |
| 529 SECURITY_STATUS status = g_cng_functions.Get().ncrypt_get_property()( | |
| 530 key->hNCryptKey, NCRYPT_ALGORITHM_GROUP_PROPERTY, nullptr, 0, &prop_len, | |
| 531 0); | |
| 532 if (FAILED(status) || prop_len == 0 || prop_len % 2 != 0) { | |
| 533 LOG(ERROR) << "Could not query CNG key type: " << status; | |
| 534 return false; | |
| 535 } | |
| 536 | |
| 537 std::vector<BYTE> prop_buf(prop_len); | |
| 538 status = g_cng_functions.Get().ncrypt_get_property()( | |
| 539 key->hNCryptKey, NCRYPT_ALGORITHM_GROUP_PROPERTY, &prop_buf[0], | |
| 540 prop_buf.size(), &prop_len, 0); | |
| 541 if (FAILED(status) || prop_len == 0 || prop_len % 2 != 0) { | |
| 542 LOG(ERROR) << "Could not query CNG key type: " << status; | |
| 543 return false; | |
| 544 } | |
| 545 | |
| 546 int type; | |
| 547 const wchar_t* alg = reinterpret_cast<const wchar_t*>(&prop_buf[0]); | |
| 548 if (wcsncmp(NCRYPT_RSA_ALGORITHM_GROUP, alg, prop_len / 2) == 0) { | |
| 549 type = EVP_PKEY_RSA; | |
| 550 } else if (wcsncmp(NCRYPT_ECDSA_ALGORITHM_GROUP, alg, prop_len / 2) == 0 || | |
| 551 wcsncmp(NCRYPT_ECDH_ALGORITHM_GROUP, alg, prop_len / 2) == 0) { | |
| 552 // Importing an ECDSA key via PKCS #12 seems to label it as ECDH rather | |
| 553 // than ECDSA, so also allow ECDH. | |
| 554 type = EVP_PKEY_EC; | |
| 555 } else { | |
| 556 LOG(ERROR) << "Unknown CNG key type: " | |
| 557 << std::wstring(alg, wcsnlen(alg, prop_len / 2)); | |
| 558 return false; | |
| 559 } | |
| 560 | |
| 561 DWORD length; | |
| 562 prop_len; | |
| 563 status = g_cng_functions.Get().ncrypt_get_property()( | |
| 564 key->hNCryptKey, NCRYPT_LENGTH_PROPERTY, | |
| 565 reinterpret_cast<BYTE*>(&length), sizeof(DWORD), &prop_len, 0); | |
| 566 if (FAILED(status)) { | |
| 567 LOG(ERROR) << "Could not get CNG key length " << status; | |
| 568 return false; | |
| 569 } | |
| 570 DCHECK_EQ(sizeof(DWORD), prop_len); | |
| 571 | |
| 572 *out_type = type; | |
| 573 *out_length = length; | |
| 574 return true; | |
| 575 } | |
| 576 | |
| 577 crypto::ScopedHCRYPTKEY hcryptkey; | |
| 578 if (!CryptGetUserKey(key->hCryptProv, key->dwKeySpec, hcryptkey.receive())) { | |
| 579 PLOG(ERROR) << "Could not get CAPI key handle"; | |
| 580 return false; | |
| 581 } | |
| 582 | |
| 583 ALG_ID alg_id; | |
| 584 DWORD prop_len = sizeof(alg_id); | |
| 585 if (!CryptGetKeyParam(hcryptkey.get(), KP_ALGID, | |
| 586 reinterpret_cast<BYTE*>(&alg_id), &prop_len, 0)) { | |
| 587 PLOG(ERROR) << "Could not query CAPI key type"; | |
| 588 return false; | |
| 589 } | |
| 590 | |
| 591 if (alg_id != CALG_RSA_SIGN && alg_id != CALG_RSA_KEYX) { | |
| 592 LOG(ERROR) << "Unknown CAPI key type: " << alg_id; | |
| 593 return false; | |
| 594 } | |
| 595 | |
| 596 DWORD length; | |
| 597 prop_len = sizeof(DWORD); | |
| 598 if (!CryptGetKeyParam(hcryptkey.get(), KP_KEYLEN, | |
| 599 reinterpret_cast<BYTE*>(&length), &prop_len, 0)) { | |
| 600 PLOG(ERROR) << "Could not get CAPI key length"; | |
| 601 return false; | |
| 602 } | |
| 603 DCHECK_EQ(sizeof(DWORD), prop_len); | |
| 604 | |
| 605 *out_type = EVP_PKEY_RSA; | |
| 606 *out_length = length; | |
| 607 return true; | |
| 608 } | |
| 609 | |
| 610 crypto::ScopedEVP_PKEY CreateRSAWrapper(ScopedCERT_KEY_CONTEXT key, | |
| 611 DWORD key_length) { | |
| 612 crypto::ScopedRSA rsa(RSA_new_method(global_boringssl_engine.Get().engine())); | |
| 613 if (!rsa) | |
| 614 return nullptr; | |
| 615 | |
| 616 RSA_set_ex_data(rsa.get(), global_boringssl_engine.Get().rsa_ex_index(), | |
| 617 new KeyExData(key.Pass(), key_length)); | |
| 618 | |
| 619 crypto::ScopedEVP_PKEY pkey(EVP_PKEY_new()); | |
| 620 if (!pkey || !EVP_PKEY_set1_RSA(pkey.get(), rsa.get())) | |
| 621 return nullptr; | |
| 622 return pkey.Pass(); | |
| 623 } | |
| 624 | |
| 625 crypto::ScopedEVP_PKEY CreateECDSAWrapper(ScopedCERT_KEY_CONTEXT key, | |
| 626 DWORD key_length) { | |
| 627 crypto::ScopedEC_KEY ec_key( | |
| 628 EC_KEY_new_method(global_boringssl_engine.Get().engine())); | |
| 629 if (!ec_key) | |
| 630 return nullptr; | |
| 631 | |
| 632 EC_KEY_set_ex_data(ec_key.get(), | |
| 633 global_boringssl_engine.Get().ec_key_ex_index(), | |
| 634 new KeyExData(key.Pass(), key_length)); | |
| 635 | |
| 636 crypto::ScopedEVP_PKEY pkey(EVP_PKEY_new()); | |
| 637 if (!pkey || !EVP_PKEY_set1_EC_KEY(pkey.get(), ec_key.get())) | |
| 638 return nullptr; | |
| 639 | |
| 640 return pkey.Pass(); | |
| 641 } | |
| 642 | |
| 643 } // namespace | |
| 644 | |
| 645 crypto::ScopedEVP_PKEY FetchClientCertPrivateKey( | |
| 646 const X509Certificate* certificate) { | |
| 647 PCCERT_CONTEXT cert_context = certificate->os_cert_handle(); | |
| 648 | |
| 649 HCRYPTPROV_OR_NCRYPT_KEY_HANDLE crypt_prov = 0; | |
| 650 DWORD key_spec = 0; | |
| 651 BOOL must_free = FALSE; | |
| 652 DWORD flags = 0; | |
| 653 if (base::win::GetVersion() >= base::win::VERSION_VISTA) | |
| 654 flags |= CRYPT_ACQUIRE_PREFER_NCRYPT_KEY_FLAG; | |
| 655 | |
| 656 if (!CryptAcquireCertificatePrivateKey(cert_context, flags, nullptr, | |
| 657 &crypt_prov, &key_spec, &must_free)) { | |
| 658 PLOG(WARNING) << "Could not acquire private key"; | |
| 659 return nullptr; | |
| 660 } | |
| 661 | |
| 662 // Should never get a cached handle back - ownership must always be | |
| 663 // transferred. | |
| 664 CHECK_EQ(must_free, TRUE); | |
| 665 ScopedCERT_KEY_CONTEXT key(new CERT_KEY_CONTEXT); | |
| 666 key->dwKeySpec = key_spec; | |
| 667 key->hCryptProv = crypt_prov; | |
| 668 | |
| 669 int key_type; | |
| 670 DWORD key_length; | |
| 671 if (!GetKeyInfo(key.get(), &key_type, &key_length)) | |
| 672 return nullptr; | |
| 673 | |
| 674 switch (key_type) { | |
| 675 case EVP_PKEY_RSA: | |
| 676 return CreateRSAWrapper(key.Pass(), key_length); | |
| 677 case EVP_PKEY_EC: | |
| 678 return CreateECDSAWrapper(key.Pass(), key_length); | |
| 679 default: | |
| 680 return nullptr; | |
| 681 } | |
| 682 } | |
| 683 | |
| 684 } // namespace net | |
| OLD | NEW |
|---|
Chromium Code Reviews
Issue 992733002:
Remove //net (except for Android test stuff) and sdch (Closed)
Base URL: git@github.com:domokit/mojo.git@master