Janis Danisevskis | c7a9fa2 | 2016-10-13 18:43:45 +0100 | [diff] [blame] | 1 | /* |
| 2 | ** |
| 3 | ** Copyright 2016, The Android Open Source Project |
| 4 | ** |
| 5 | ** Licensed under the Apache License, Version 2.0 (the "License"); |
| 6 | ** you may not use this file except in compliance with the License. |
| 7 | ** You may obtain a copy of the License at |
| 8 | ** |
| 9 | ** http://www.apache.org/licenses/LICENSE-2.0 |
| 10 | ** |
| 11 | ** Unless required by applicable law or agreed to in writing, software |
| 12 | ** distributed under the License is distributed on an "AS IS" BASIS, |
| 13 | ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 14 | ** See the License for the specific language governing permissions and |
| 15 | ** limitations under the License. |
| 16 | */ |
| 17 | |
| 18 | #define LOG_TAG "android.hardware.keymaster@3.0-impl" |
| 19 | |
| 20 | #include "legacy_keymaster_device_wrapper.h" |
| 21 | |
Logan Chien | cdc813f | 2018-04-23 13:52:28 +0800 | [diff] [blame] | 22 | #include <log/log.h> |
Janis Danisevskis | c7a9fa2 | 2016-10-13 18:43:45 +0100 | [diff] [blame] | 23 | |
| 24 | #include <hardware/keymaster2.h> |
| 25 | #include <hardware/keymaster_defs.h> |
| 26 | #include <keymaster/keymaster_configuration.h> |
| 27 | #include <keymaster/soft_keymaster_device.h> |
| 28 | |
| 29 | namespace android { |
| 30 | namespace keystore { |
| 31 | |
| 32 | using ::keymaster::SoftKeymasterDevice; |
| 33 | |
| 34 | LegacyKeymasterDeviceWrapper::LegacyKeymasterDeviceWrapper(keymaster2_device_t* dev) |
| 35 | : keymaster_device_(dev) {} |
| 36 | |
| 37 | LegacyKeymasterDeviceWrapper::~LegacyKeymasterDeviceWrapper() { |
| 38 | if (keymaster_device_) keymaster_device_->common.close(&keymaster_device_->common); |
| 39 | } |
| 40 | |
| 41 | static inline keymaster_tag_type_t typeFromTag(const keymaster_tag_t tag) { |
| 42 | return keymaster_tag_get_type(tag); |
| 43 | } |
| 44 | |
| 45 | /** |
| 46 | * legacy_enum_conversion converts enums from hidl to keymaster and back. Currently, this is just a |
| 47 | * cast to make the compiler happy. One of two thigs should happen though: |
| 48 | * TODO The keymaster enums should become aliases for the hidl generated enums so that we have a |
| 49 | * single point of truth. Then this cast function can go away. |
| 50 | */ |
| 51 | inline static keymaster_tag_t legacy_enum_conversion(const Tag value) { |
| 52 | return keymaster_tag_t(value); |
| 53 | } |
| 54 | inline static Tag legacy_enum_conversion(const keymaster_tag_t value) { |
| 55 | return Tag(value); |
| 56 | } |
| 57 | inline static keymaster_purpose_t legacy_enum_conversion(const KeyPurpose value) { |
| 58 | return keymaster_purpose_t(value); |
| 59 | } |
| 60 | inline static keymaster_key_format_t legacy_enum_conversion(const KeyFormat value) { |
| 61 | return keymaster_key_format_t(value); |
| 62 | } |
| 63 | inline static ErrorCode legacy_enum_conversion(const keymaster_error_t value) { |
| 64 | return ErrorCode(value); |
| 65 | } |
| 66 | |
| 67 | class KmParamSet : public keymaster_key_param_set_t { |
| 68 | public: |
Chih-Hung Hsieh | 4fa39ef | 2019-01-04 13:34:17 -0800 | [diff] [blame] | 69 | explicit KmParamSet(const hidl_vec<KeyParameter>& keyParams) { |
Janis Danisevskis | c7a9fa2 | 2016-10-13 18:43:45 +0100 | [diff] [blame] | 70 | params = new keymaster_key_param_t[keyParams.size()]; |
| 71 | length = keyParams.size(); |
| 72 | for (size_t i = 0; i < keyParams.size(); ++i) { |
| 73 | auto tag = legacy_enum_conversion(keyParams[i].tag); |
| 74 | switch (typeFromTag(tag)) { |
| 75 | case KM_ENUM: |
| 76 | case KM_ENUM_REP: |
| 77 | params[i] = keymaster_param_enum(tag, keyParams[i].f.integer); |
| 78 | break; |
| 79 | case KM_UINT: |
| 80 | case KM_UINT_REP: |
| 81 | params[i] = keymaster_param_int(tag, keyParams[i].f.integer); |
| 82 | break; |
| 83 | case KM_ULONG: |
| 84 | case KM_ULONG_REP: |
| 85 | params[i] = keymaster_param_long(tag, keyParams[i].f.longInteger); |
| 86 | break; |
| 87 | case KM_DATE: |
| 88 | params[i] = keymaster_param_date(tag, keyParams[i].f.dateTime); |
| 89 | break; |
| 90 | case KM_BOOL: |
| 91 | if (keyParams[i].f.boolValue) |
| 92 | params[i] = keymaster_param_bool(tag); |
| 93 | else |
| 94 | params[i].tag = KM_TAG_INVALID; |
| 95 | break; |
| 96 | case KM_BIGNUM: |
| 97 | case KM_BYTES: |
| 98 | params[i] = |
| 99 | keymaster_param_blob(tag, &keyParams[i].blob[0], keyParams[i].blob.size()); |
| 100 | break; |
| 101 | case KM_INVALID: |
| 102 | default: |
| 103 | params[i].tag = KM_TAG_INVALID; |
| 104 | /* just skip */ |
| 105 | break; |
| 106 | } |
| 107 | } |
| 108 | } |
Chih-Hung Hsieh | f73b198 | 2018-09-25 12:03:21 -0700 | [diff] [blame] | 109 | KmParamSet(KmParamSet&& other) noexcept |
| 110 | : keymaster_key_param_set_t{other.params, other.length} { |
Janis Danisevskis | c7a9fa2 | 2016-10-13 18:43:45 +0100 | [diff] [blame] | 111 | other.length = 0; |
| 112 | other.params = nullptr; |
| 113 | } |
| 114 | KmParamSet(const KmParamSet&) = delete; |
| 115 | ~KmParamSet() { delete[] params; } |
| 116 | }; |
| 117 | |
| 118 | inline static KmParamSet hidlParams2KmParamSet(const hidl_vec<KeyParameter>& params) { |
| 119 | return KmParamSet(params); |
| 120 | } |
| 121 | |
| 122 | inline static keymaster_blob_t hidlVec2KmBlob(const hidl_vec<uint8_t>& blob) { |
| 123 | /* hidl unmarshals funny pointers if the the blob is empty */ |
| 124 | if (blob.size()) return {&blob[0], blob.size()}; |
| 125 | return {}; |
| 126 | } |
| 127 | |
| 128 | inline static keymaster_key_blob_t hidlVec2KmKeyBlob(const hidl_vec<uint8_t>& blob) { |
| 129 | /* hidl unmarshals funny pointers if the the blob is empty */ |
| 130 | if (blob.size()) return {&blob[0], blob.size()}; |
| 131 | return {}; |
| 132 | } |
| 133 | |
| 134 | inline static hidl_vec<uint8_t> kmBlob2hidlVec(const keymaster_key_blob_t& blob) { |
Rob Barnes | bb6cabd | 2018-10-04 17:10:37 -0600 | [diff] [blame] | 135 | if (blob.key_material == nullptr || blob.key_material_size == 0) { |
| 136 | return {}; |
| 137 | } else { |
| 138 | return hidl_vec<uint8_t>(blob.key_material, blob.key_material + blob.key_material_size); |
| 139 | } |
Janis Danisevskis | c7a9fa2 | 2016-10-13 18:43:45 +0100 | [diff] [blame] | 140 | } |
| 141 | inline static hidl_vec<uint8_t> kmBlob2hidlVec(const keymaster_blob_t& blob) { |
Rob Barnes | bb6cabd | 2018-10-04 17:10:37 -0600 | [diff] [blame] | 142 | if (blob.data == nullptr || blob.data_length == 0) { |
| 143 | return {}; |
| 144 | } else { |
| 145 | return hidl_vec<uint8_t>(blob.data, blob.data + blob.data_length); |
| 146 | } |
Janis Danisevskis | c7a9fa2 | 2016-10-13 18:43:45 +0100 | [diff] [blame] | 147 | } |
| 148 | |
| 149 | inline static hidl_vec<hidl_vec<uint8_t>> |
| 150 | kmCertChain2Hidl(const keymaster_cert_chain_t* cert_chain) { |
| 151 | hidl_vec<hidl_vec<uint8_t>> result; |
| 152 | if (!cert_chain || cert_chain->entry_count == 0 || !cert_chain->entries) return result; |
| 153 | |
| 154 | result.resize(cert_chain->entry_count); |
| 155 | for (size_t i = 0; i < cert_chain->entry_count; ++i) { |
| 156 | auto& entry = cert_chain->entries[i]; |
| 157 | result[i] = kmBlob2hidlVec(entry); |
| 158 | } |
| 159 | |
| 160 | return result; |
| 161 | } |
| 162 | |
| 163 | static inline hidl_vec<KeyParameter> kmParamSet2Hidl(const keymaster_key_param_set_t& set) { |
| 164 | hidl_vec<KeyParameter> result; |
| 165 | if (set.length == 0 || set.params == nullptr) return result; |
| 166 | |
| 167 | result.resize(set.length); |
| 168 | keymaster_key_param_t* params = set.params; |
| 169 | for (size_t i = 0; i < set.length; ++i) { |
| 170 | auto tag = params[i].tag; |
| 171 | result[i].tag = legacy_enum_conversion(tag); |
| 172 | switch (typeFromTag(tag)) { |
| 173 | case KM_ENUM: |
| 174 | case KM_ENUM_REP: |
| 175 | result[i].f.integer = params[i].enumerated; |
| 176 | break; |
| 177 | case KM_UINT: |
| 178 | case KM_UINT_REP: |
| 179 | result[i].f.integer = params[i].integer; |
| 180 | break; |
| 181 | case KM_ULONG: |
| 182 | case KM_ULONG_REP: |
| 183 | result[i].f.longInteger = params[i].long_integer; |
| 184 | break; |
| 185 | case KM_DATE: |
| 186 | result[i].f.dateTime = params[i].date_time; |
| 187 | break; |
| 188 | case KM_BOOL: |
| 189 | result[i].f.boolValue = params[i].boolean; |
| 190 | break; |
| 191 | case KM_BIGNUM: |
| 192 | case KM_BYTES: |
Rob Barnes | bb6cabd | 2018-10-04 17:10:37 -0600 | [diff] [blame] | 193 | result[i].blob = kmBlob2hidlVec(params[i].blob); |
Janis Danisevskis | c7a9fa2 | 2016-10-13 18:43:45 +0100 | [diff] [blame] | 194 | break; |
| 195 | case KM_INVALID: |
| 196 | default: |
| 197 | params[i].tag = KM_TAG_INVALID; |
| 198 | /* just skip */ |
| 199 | break; |
| 200 | } |
| 201 | } |
| 202 | return result; |
| 203 | } |
| 204 | |
| 205 | // Methods from ::android::hardware::keymaster::V3_0::IKeymasterDevice follow. |
| 206 | Return<void> LegacyKeymasterDeviceWrapper::getHardwareFeatures(getHardwareFeatures_cb _hidl_cb) { |
Shawn Willden | b8550a0 | 2017-02-23 11:06:05 -0700 | [diff] [blame] | 207 | _hidl_cb(false, false, false, false, false, "Fallback Device", "Google Android Security"); |
Janis Danisevskis | c7a9fa2 | 2016-10-13 18:43:45 +0100 | [diff] [blame] | 208 | return Void(); |
| 209 | } |
| 210 | |
| 211 | Return<ErrorCode> LegacyKeymasterDeviceWrapper::addRngEntropy(const hidl_vec<uint8_t>& data) { |
| 212 | return legacy_enum_conversion( |
| 213 | keymaster_device_->add_rng_entropy(keymaster_device_, &data[0], data.size())); |
| 214 | } |
| 215 | |
| 216 | Return<void> LegacyKeymasterDeviceWrapper::generateKey(const hidl_vec<KeyParameter>& keyParams, |
| 217 | generateKey_cb _hidl_cb) { |
| 218 | // result variables for the wire |
| 219 | KeyCharacteristics resultCharacteristics; |
| 220 | hidl_vec<uint8_t> resultKeyBlob; |
| 221 | |
| 222 | // result variables the backend understands |
| 223 | keymaster_key_blob_t key_blob{nullptr, 0}; |
| 224 | keymaster_key_characteristics_t key_characteristics{{nullptr, 0}, {nullptr, 0}}; |
| 225 | |
| 226 | // convert the parameter set to something our backend understands |
| 227 | auto kmParams = hidlParams2KmParamSet(keyParams); |
| 228 | |
| 229 | auto rc = keymaster_device_->generate_key(keymaster_device_, &kmParams, &key_blob, |
| 230 | &key_characteristics); |
| 231 | |
| 232 | if (rc == KM_ERROR_OK) { |
| 233 | // on success convert the result to wire format |
| 234 | resultKeyBlob = kmBlob2hidlVec(key_blob); |
| 235 | resultCharacteristics.softwareEnforced = kmParamSet2Hidl(key_characteristics.sw_enforced); |
| 236 | resultCharacteristics.teeEnforced = kmParamSet2Hidl(key_characteristics.hw_enforced); |
| 237 | } |
| 238 | |
| 239 | // send results off to the client |
| 240 | _hidl_cb(legacy_enum_conversion(rc), resultKeyBlob, resultCharacteristics); |
| 241 | |
| 242 | // free buffers that we are responsible for |
| 243 | if (key_blob.key_material) free(const_cast<uint8_t*>(key_blob.key_material)); |
| 244 | keymaster_free_characteristics(&key_characteristics); |
| 245 | |
| 246 | return Void(); |
| 247 | } |
| 248 | |
| 249 | Return<void> LegacyKeymasterDeviceWrapper::getKeyCharacteristics( |
| 250 | const hidl_vec<uint8_t>& keyBlob, const hidl_vec<uint8_t>& clientId, |
| 251 | const hidl_vec<uint8_t>& appData, getKeyCharacteristics_cb _hidl_cb) { |
| 252 | // result variables for the wire |
| 253 | KeyCharacteristics resultCharacteristics; |
| 254 | |
| 255 | // result variables the backend understands |
| 256 | keymaster_key_characteristics_t key_characteristics{{nullptr, 0}, {nullptr, 0}}; |
| 257 | |
| 258 | auto kmKeyBlob = hidlVec2KmKeyBlob(keyBlob); |
| 259 | auto kmClientId = hidlVec2KmBlob(clientId); |
| 260 | auto kmAppData = hidlVec2KmBlob(appData); |
| 261 | |
| 262 | auto rc = keymaster_device_->get_key_characteristics( |
| 263 | keymaster_device_, keyBlob.size() ? &kmKeyBlob : nullptr, |
| 264 | clientId.size() ? &kmClientId : nullptr, appData.size() ? &kmAppData : nullptr, |
| 265 | &key_characteristics); |
| 266 | |
| 267 | if (rc == KM_ERROR_OK) { |
| 268 | resultCharacteristics.softwareEnforced = kmParamSet2Hidl(key_characteristics.sw_enforced); |
| 269 | resultCharacteristics.teeEnforced = kmParamSet2Hidl(key_characteristics.hw_enforced); |
| 270 | } |
| 271 | |
| 272 | _hidl_cb(legacy_enum_conversion(rc), resultCharacteristics); |
| 273 | |
| 274 | keymaster_free_characteristics(&key_characteristics); |
| 275 | |
| 276 | return Void(); |
| 277 | } |
| 278 | |
| 279 | Return<void> LegacyKeymasterDeviceWrapper::importKey(const hidl_vec<KeyParameter>& params, |
| 280 | KeyFormat keyFormat, |
| 281 | const hidl_vec<uint8_t>& keyData, |
| 282 | importKey_cb _hidl_cb) { |
| 283 | // result variables for the wire |
| 284 | KeyCharacteristics resultCharacteristics; |
| 285 | hidl_vec<uint8_t> resultKeyBlob; |
| 286 | |
| 287 | // result variables the backend understands |
| 288 | keymaster_key_blob_t key_blob{nullptr, 0}; |
| 289 | keymaster_key_characteristics_t key_characteristics{{nullptr, 0}, {nullptr, 0}}; |
| 290 | |
| 291 | auto kmParams = hidlParams2KmParamSet(params); |
| 292 | auto kmKeyData = hidlVec2KmBlob(keyData); |
| 293 | |
| 294 | auto rc = keymaster_device_->import_key(keymaster_device_, &kmParams, |
| 295 | legacy_enum_conversion(keyFormat), &kmKeyData, |
| 296 | &key_blob, &key_characteristics); |
| 297 | |
| 298 | if (rc == KM_ERROR_OK) { |
| 299 | // on success convert the result to wire format |
| 300 | resultKeyBlob = kmBlob2hidlVec(key_blob); |
| 301 | resultCharacteristics.softwareEnforced = kmParamSet2Hidl(key_characteristics.sw_enforced); |
| 302 | resultCharacteristics.teeEnforced = kmParamSet2Hidl(key_characteristics.hw_enforced); |
| 303 | } |
| 304 | |
| 305 | _hidl_cb(legacy_enum_conversion(rc), resultKeyBlob, resultCharacteristics); |
| 306 | |
| 307 | // free buffers that we are responsible for |
| 308 | if (key_blob.key_material) free(const_cast<uint8_t*>(key_blob.key_material)); |
| 309 | keymaster_free_characteristics(&key_characteristics); |
| 310 | |
| 311 | return Void(); |
| 312 | } |
| 313 | |
| 314 | Return<void> LegacyKeymasterDeviceWrapper::exportKey(KeyFormat exportFormat, |
| 315 | const hidl_vec<uint8_t>& keyBlob, |
| 316 | const hidl_vec<uint8_t>& clientId, |
| 317 | const hidl_vec<uint8_t>& appData, |
| 318 | exportKey_cb _hidl_cb) { |
| 319 | |
| 320 | // result variables for the wire |
| 321 | hidl_vec<uint8_t> resultKeyBlob; |
| 322 | |
| 323 | // result variables the backend understands |
| 324 | keymaster_blob_t out_blob = {}; |
| 325 | |
| 326 | auto kmKeyBlob = hidlVec2KmKeyBlob(keyBlob); |
| 327 | auto kmClientId = hidlVec2KmBlob(clientId); |
| 328 | auto kmAppData = hidlVec2KmBlob(appData); |
| 329 | |
| 330 | auto rc = keymaster_device_->export_key(keymaster_device_, legacy_enum_conversion(exportFormat), |
| 331 | keyBlob.size() ? &kmKeyBlob : nullptr, |
| 332 | clientId.size() ? &kmClientId : nullptr, |
| 333 | appData.size() ? &kmAppData : nullptr, &out_blob); |
| 334 | |
| 335 | if (rc == KM_ERROR_OK) { |
| 336 | // on success convert the result to wire format |
| 337 | // (Can we assume that key_blob is {nullptr, 0} or a valid buffer description?) |
| 338 | resultKeyBlob = kmBlob2hidlVec(out_blob); |
| 339 | } |
| 340 | |
| 341 | _hidl_cb(legacy_enum_conversion(rc), resultKeyBlob); |
| 342 | |
| 343 | // free buffers that we are responsible for |
| 344 | if (out_blob.data) free(const_cast<uint8_t*>(out_blob.data)); |
| 345 | |
| 346 | return Void(); |
| 347 | } |
| 348 | |
| 349 | Return<void> LegacyKeymasterDeviceWrapper::attestKey(const hidl_vec<uint8_t>& keyToAttest, |
| 350 | const hidl_vec<KeyParameter>& attestParams, |
| 351 | attestKey_cb _hidl_cb) { |
| 352 | |
| 353 | hidl_vec<hidl_vec<uint8_t>> resultCertChain; |
| 354 | |
Bartosz Fabianowski | a9452d9 | 2017-01-23 22:21:11 +0100 | [diff] [blame] | 355 | for (size_t i = 0; i < attestParams.size(); ++i) { |
| 356 | switch (attestParams[i].tag) { |
| 357 | case Tag::ATTESTATION_ID_BRAND: |
| 358 | case Tag::ATTESTATION_ID_DEVICE: |
| 359 | case Tag::ATTESTATION_ID_PRODUCT: |
| 360 | case Tag::ATTESTATION_ID_SERIAL: |
| 361 | case Tag::ATTESTATION_ID_IMEI: |
| 362 | case Tag::ATTESTATION_ID_MEID: |
Bartosz Fabianowski | 634a1aa | 2017-03-20 14:02:32 +0100 | [diff] [blame] | 363 | case Tag::ATTESTATION_ID_MANUFACTURER: |
| 364 | case Tag::ATTESTATION_ID_MODEL: |
Bartosz Fabianowski | a9452d9 | 2017-01-23 22:21:11 +0100 | [diff] [blame] | 365 | // Device id attestation may only be supported if the device is able to permanently |
| 366 | // destroy its knowledge of the ids. This device is unable to do this, so it must |
| 367 | // never perform any device id attestation. |
| 368 | _hidl_cb(ErrorCode::CANNOT_ATTEST_IDS, resultCertChain); |
| 369 | return Void(); |
| 370 | default: |
| 371 | break; |
| 372 | } |
| 373 | } |
| 374 | |
Janis Danisevskis | c7a9fa2 | 2016-10-13 18:43:45 +0100 | [diff] [blame] | 375 | keymaster_cert_chain_t cert_chain = {}; |
| 376 | |
| 377 | auto kmKeyToAttest = hidlVec2KmKeyBlob(keyToAttest); |
| 378 | auto kmAttestParams = hidlParams2KmParamSet(attestParams); |
| 379 | |
| 380 | auto rc = keymaster_device_->attest_key(keymaster_device_, &kmKeyToAttest, &kmAttestParams, |
| 381 | &cert_chain); |
| 382 | |
| 383 | if (rc == KM_ERROR_OK) { |
| 384 | resultCertChain = kmCertChain2Hidl(&cert_chain); |
| 385 | } |
| 386 | |
| 387 | _hidl_cb(legacy_enum_conversion(rc), resultCertChain); |
| 388 | |
| 389 | keymaster_free_cert_chain(&cert_chain); |
| 390 | |
| 391 | return Void(); |
| 392 | } |
| 393 | |
| 394 | Return<void> LegacyKeymasterDeviceWrapper::upgradeKey(const hidl_vec<uint8_t>& keyBlobToUpgrade, |
| 395 | const hidl_vec<KeyParameter>& upgradeParams, |
| 396 | upgradeKey_cb _hidl_cb) { |
| 397 | |
| 398 | // result variables for the wire |
| 399 | hidl_vec<uint8_t> resultKeyBlob; |
| 400 | |
| 401 | // result variables the backend understands |
| 402 | keymaster_key_blob_t key_blob = {}; |
| 403 | |
| 404 | auto kmKeyBlobToUpgrade = hidlVec2KmKeyBlob(keyBlobToUpgrade); |
| 405 | auto kmUpgradeParams = hidlParams2KmParamSet(upgradeParams); |
| 406 | |
| 407 | auto rc = keymaster_device_->upgrade_key(keymaster_device_, &kmKeyBlobToUpgrade, |
| 408 | &kmUpgradeParams, &key_blob); |
| 409 | |
| 410 | if (rc == KM_ERROR_OK) { |
| 411 | // on success convert the result to wire format |
| 412 | resultKeyBlob = kmBlob2hidlVec(key_blob); |
| 413 | } |
| 414 | |
| 415 | _hidl_cb(legacy_enum_conversion(rc), resultKeyBlob); |
| 416 | |
| 417 | if (key_blob.key_material) free(const_cast<uint8_t*>(key_blob.key_material)); |
| 418 | |
| 419 | return Void(); |
| 420 | } |
| 421 | |
| 422 | Return<ErrorCode> LegacyKeymasterDeviceWrapper::deleteKey(const hidl_vec<uint8_t>& keyBlob) { |
| 423 | auto kmKeyBlob = hidlVec2KmKeyBlob(keyBlob); |
| 424 | return legacy_enum_conversion(keymaster_device_->delete_key(keymaster_device_, &kmKeyBlob)); |
| 425 | } |
| 426 | |
| 427 | Return<ErrorCode> LegacyKeymasterDeviceWrapper::deleteAllKeys() { |
| 428 | return legacy_enum_conversion(keymaster_device_->delete_all_keys(keymaster_device_)); |
| 429 | } |
| 430 | |
Bartosz Fabianowski | a9452d9 | 2017-01-23 22:21:11 +0100 | [diff] [blame] | 431 | Return<ErrorCode> LegacyKeymasterDeviceWrapper::destroyAttestationIds() { |
| 432 | return ErrorCode::UNIMPLEMENTED; |
| 433 | } |
| 434 | |
Janis Danisevskis | c7a9fa2 | 2016-10-13 18:43:45 +0100 | [diff] [blame] | 435 | Return<void> LegacyKeymasterDeviceWrapper::begin(KeyPurpose purpose, const hidl_vec<uint8_t>& key, |
| 436 | const hidl_vec<KeyParameter>& inParams, |
| 437 | begin_cb _hidl_cb) { |
| 438 | |
| 439 | // result variables for the wire |
| 440 | hidl_vec<KeyParameter> resultParams; |
| 441 | uint64_t resultOpHandle = 0; |
| 442 | |
| 443 | // result variables the backend understands |
| 444 | keymaster_key_param_set_t out_params{nullptr, 0}; |
| 445 | keymaster_operation_handle_t& operation_handle = resultOpHandle; |
| 446 | |
| 447 | auto kmKey = hidlVec2KmKeyBlob(key); |
| 448 | auto kmInParams = hidlParams2KmParamSet(inParams); |
| 449 | |
| 450 | auto rc = keymaster_device_->begin(keymaster_device_, legacy_enum_conversion(purpose), &kmKey, |
| 451 | &kmInParams, &out_params, &operation_handle); |
| 452 | |
| 453 | if (rc == KM_ERROR_OK) resultParams = kmParamSet2Hidl(out_params); |
| 454 | |
| 455 | _hidl_cb(legacy_enum_conversion(rc), resultParams, resultOpHandle); |
| 456 | |
| 457 | keymaster_free_param_set(&out_params); |
| 458 | |
| 459 | return Void(); |
| 460 | } |
| 461 | |
| 462 | Return<void> LegacyKeymasterDeviceWrapper::update(uint64_t operationHandle, |
| 463 | const hidl_vec<KeyParameter>& inParams, |
| 464 | const hidl_vec<uint8_t>& input, |
| 465 | update_cb _hidl_cb) { |
| 466 | // result variables for the wire |
| 467 | uint32_t resultConsumed = 0; |
| 468 | hidl_vec<KeyParameter> resultParams; |
| 469 | hidl_vec<uint8_t> resultBlob; |
| 470 | |
| 471 | // result variables the backend understands |
| 472 | size_t consumed = 0; |
| 473 | keymaster_key_param_set_t out_params = {}; |
| 474 | keymaster_blob_t out_blob = {}; |
| 475 | |
| 476 | auto kmInParams = hidlParams2KmParamSet(inParams); |
| 477 | auto kmInput = hidlVec2KmBlob(input); |
| 478 | |
| 479 | auto rc = keymaster_device_->update(keymaster_device_, operationHandle, &kmInParams, &kmInput, |
| 480 | &consumed, &out_params, &out_blob); |
| 481 | |
| 482 | if (rc == KM_ERROR_OK) { |
| 483 | resultConsumed = consumed; |
| 484 | resultParams = kmParamSet2Hidl(out_params); |
| 485 | resultBlob = kmBlob2hidlVec(out_blob); |
| 486 | } |
| 487 | |
| 488 | _hidl_cb(legacy_enum_conversion(rc), resultConsumed, resultParams, resultBlob); |
| 489 | |
| 490 | keymaster_free_param_set(&out_params); |
| 491 | if (out_blob.data) free(const_cast<uint8_t*>(out_blob.data)); |
| 492 | |
| 493 | return Void(); |
| 494 | } |
| 495 | |
| 496 | Return<void> LegacyKeymasterDeviceWrapper::finish(uint64_t operationHandle, |
| 497 | const hidl_vec<KeyParameter>& inParams, |
| 498 | const hidl_vec<uint8_t>& input, |
| 499 | const hidl_vec<uint8_t>& signature, |
| 500 | finish_cb _hidl_cb) { |
| 501 | // result variables for the wire |
| 502 | hidl_vec<KeyParameter> resultParams; |
| 503 | hidl_vec<uint8_t> resultBlob; |
| 504 | |
| 505 | // result variables the backend understands |
| 506 | keymaster_key_param_set_t out_params = {}; |
| 507 | keymaster_blob_t out_blob = {}; |
| 508 | |
| 509 | auto kmInParams = hidlParams2KmParamSet(inParams); |
| 510 | auto kmInput = hidlVec2KmBlob(input); |
| 511 | auto kmSignature = hidlVec2KmBlob(signature); |
| 512 | |
| 513 | auto rc = keymaster_device_->finish(keymaster_device_, operationHandle, &kmInParams, &kmInput, |
| 514 | &kmSignature, &out_params, &out_blob); |
| 515 | |
| 516 | if (rc == KM_ERROR_OK) { |
| 517 | resultParams = kmParamSet2Hidl(out_params); |
| 518 | resultBlob = kmBlob2hidlVec(out_blob); |
| 519 | } |
| 520 | |
| 521 | _hidl_cb(legacy_enum_conversion(rc), resultParams, resultBlob); |
| 522 | |
| 523 | keymaster_free_param_set(&out_params); |
| 524 | if (out_blob.data) free(const_cast<uint8_t*>(out_blob.data)); |
| 525 | |
| 526 | return Void(); |
| 527 | } |
| 528 | |
| 529 | Return<ErrorCode> LegacyKeymasterDeviceWrapper::abort(uint64_t operationHandle) { |
| 530 | return legacy_enum_conversion(keymaster_device_->abort(keymaster_device_, operationHandle)); |
| 531 | } |
| 532 | |
| 533 | sp<IKeymasterDevice> makeSoftwareKeymasterDevice() { |
| 534 | keymaster2_device_t* dev = nullptr; |
| 535 | dev = (new SoftKeymasterDevice)->keymaster2_device(); |
| 536 | |
| 537 | auto kmrc = ::keymaster::ConfigureDevice(dev); |
| 538 | if (kmrc != KM_ERROR_OK) { |
| 539 | dev->common.close(&dev->common); |
| 540 | return nullptr; |
| 541 | } |
| 542 | |
| 543 | return new LegacyKeymasterDeviceWrapper(dev); |
| 544 | } |
| 545 | |
| 546 | } // namespace keystore |
| 547 | } // namespace android |