| /* |
| ** |
| ** Copyright 2018, The Android Open Source Project |
| ** |
| ** Licensed under the Apache License, Version 2.0 (the "License"); |
| ** you may not use this file except in compliance with the License. |
| ** You may obtain a copy of the License at |
| ** |
| ** http://www.apache.org/licenses/LICENSE-2.0 |
| ** |
| ** Unless required by applicable law or agreed to in writing, software |
| ** distributed under the License is distributed on an "AS IS" BASIS, |
| ** WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| ** See the License for the specific language governing permissions and |
| ** limitations under the License. |
| */ |
| #define LOG_TAG "keymaster_worker" |
| |
| #include "keymaster_worker.h" |
| |
| #include "keystore_utils.h" |
| |
| #include <android-base/logging.h> |
| |
| #include <log/log_event_list.h> |
| |
| #include <private/android_logger.h> |
| |
| #include "KeyStore.h" |
| #include "keymaster_enforcement.h" |
| |
| #include "key_proto_handler.h" |
| #include "keystore_utils.h" |
| |
| #include <chrono> |
| |
| namespace keystore { |
| |
| using namespace std::chrono; |
| |
| constexpr size_t kMaxOperations = 15; |
| |
| using AndroidKeymasterArguments = android::security::keymaster::KeymasterArguments; |
| using android::security::keymaster::ExportResult; |
| using android::security::keymaster::operationFailed; |
| using android::security::keymaster::OperationResult; |
| |
| Worker::Worker() {} |
| Worker::~Worker() { |
| std::unique_lock<std::mutex> lock(pending_requests_mutex_); |
| terminate_ = true; |
| pending_requests_cond_var_.notify_all(); |
| pending_requests_cond_var_.wait(lock, [this] { return !running_; }); |
| } |
| void Worker::addRequest(WorkerTask request) { |
| std::unique_lock<std::mutex> lock(pending_requests_mutex_); |
| bool start_thread = !running_; |
| running_ = true; |
| pending_requests_.push(std::move(request)); |
| lock.unlock(); |
| pending_requests_cond_var_.notify_all(); |
| if (start_thread) { |
| auto worker = std::thread([this] { |
| std::unique_lock<std::mutex> lock(pending_requests_mutex_); |
| while (running_) { |
| // Wait for 30s if the request queue is empty, then kill die. |
| // Die immediately if termiate_ was set which happens in the destructor. |
| auto status = pending_requests_cond_var_.wait_for( |
| lock, 30s, [this]() { return !pending_requests_.empty() || terminate_; }); |
| if (status && !terminate_) { |
| auto request = std::move(pending_requests_.front()); |
| lock.unlock(); |
| request(); |
| lock.lock(); |
| pending_requests_.pop(); |
| } else { |
| running_ = false; |
| } |
| pending_requests_cond_var_.notify_all(); |
| } |
| }); |
| worker.detach(); |
| } |
| } |
| |
| KeymasterWorker::KeymasterWorker(sp<Keymaster> keymasterDevice, KeyStore* keyStore) |
| : keymasterDevice_(std::move(keymasterDevice)), operationMap_(keyStore), keyStore_(keyStore) { |
| // make sure that hal version is cached. |
| if (keymasterDevice_) keymasterDevice_->halVersion(); |
| } |
| |
| void KeymasterWorker::logIfKeymasterVendorError(ErrorCode ec) const { |
| keymasterDevice_->logIfKeymasterVendorError(ec); |
| } |
| |
| void KeymasterWorker::deleteOldKeyOnUpgrade(const LockedKeyBlobEntry& blobfile, Blob keyBlob) { |
| // if we got the blob successfully, we try and delete it from the keymaster device |
| auto& dev = keymasterDevice_; |
| uid_t uid = blobfile->uid(); |
| const auto& alias = blobfile->alias(); |
| |
| if (keyBlob.getType() == ::TYPE_KEYMASTER_10) { |
| auto ret = KS_HANDLE_HIDL_ERROR(dev, dev->deleteKey(blob2hidlVec(keyBlob))); |
| // A device doesn't have to implement delete_key. |
| bool success = ret == ErrorCode::OK || ret == ErrorCode::UNIMPLEMENTED; |
| if (__android_log_security()) { |
| android_log_event_list(SEC_TAG_KEY_DESTROYED) |
| << int32_t(success) << alias << int32_t(uid) << LOG_ID_SECURITY; |
| } |
| if (!success) { |
| LOG(ERROR) << "Keymaster delete for key " << alias << " of uid " << uid << " failed"; |
| } |
| } |
| } |
| |
| std::tuple<KeyStoreServiceReturnCode, Blob> |
| KeymasterWorker::upgradeKeyBlob(const LockedKeyBlobEntry& lockedEntry, |
| const AuthorizationSet& params) { |
| LOG(INFO) << "upgradeKeyBlob " << lockedEntry->alias() << " " << (uint32_t)lockedEntry->uid(); |
| |
| std::tuple<KeyStoreServiceReturnCode, Blob> result; |
| |
| auto userState = keyStore_->getUserStateDB().getUserStateByUid(lockedEntry->uid()); |
| |
| Blob& blob = std::get<1>(result); |
| KeyStoreServiceReturnCode& error = std::get<0>(result); |
| |
| Blob charBlob; |
| ResponseCode rc; |
| |
| std::tie(rc, blob, charBlob) = |
| lockedEntry.readBlobs(userState->getEncryptionKey(), userState->getState()); |
| |
| userState = {}; |
| |
| if (rc != ResponseCode::NO_ERROR) { |
| return error = rc, result; |
| } |
| |
| auto hidlKey = blob2hidlVec(blob); |
| auto& dev = keymasterDevice_; |
| |
| auto hidlCb = [&](ErrorCode ret, const ::std::vector<uint8_t>& upgradedKeyBlob) { |
| dev->logIfKeymasterVendorError(ret); |
| error = ret; |
| if (!error.isOk()) { |
| if (error == ErrorCode::INVALID_KEY_BLOB) { |
| log_key_integrity_violation(lockedEntry->alias().c_str(), lockedEntry->uid()); |
| } |
| return; |
| } |
| |
| Blob newBlob(&upgradedKeyBlob[0], upgradedKeyBlob.size(), nullptr /* info */, |
| 0 /* infoLength */, ::TYPE_KEYMASTER_10); |
| newBlob.setSecurityLevel(blob.getSecurityLevel()); |
| newBlob.setEncrypted(blob.isEncrypted()); |
| newBlob.setSuperEncrypted(blob.isSuperEncrypted()); |
| newBlob.setCriticalToDeviceEncryption(blob.isCriticalToDeviceEncryption()); |
| |
| error = keyStore_->put(lockedEntry, newBlob, charBlob); |
| if (!error.isOk()) { |
| ALOGI("upgradeKeyBlob keystore->put failed %d", error.getErrorCode()); |
| return; |
| } |
| |
| deleteOldKeyOnUpgrade(lockedEntry, std::move(blob)); |
| blob = std::move(newBlob); |
| }; |
| |
| KeyStoreServiceReturnCode error2; |
| error2 = KS_HANDLE_HIDL_ERROR(dev, dev->upgradeKey(hidlKey, params.hidl_data(), hidlCb)); |
| if (!error2.isOk()) { |
| return error = error2, result; |
| } |
| |
| return result; |
| } |
| |
| std::tuple<KeyStoreServiceReturnCode, KeyCharacteristics, Blob, Blob> |
| KeymasterWorker::createKeyCharacteristicsCache(const LockedKeyBlobEntry& lockedEntry, |
| const hidl_vec<uint8_t>& clientId, |
| const hidl_vec<uint8_t>& appData, Blob keyBlob, |
| Blob charBlob) { |
| std::tuple<KeyStoreServiceReturnCode, KeyCharacteristics, Blob, Blob> result; |
| |
| #if __cplusplus == 201703L |
| auto& [rc, resultCharacteristics, outBlob, charOutBlob] = result; |
| #else |
| KeyStoreServiceReturnCode& rc = std::get<0>(result); |
| KeyCharacteristics& resultCharacteristics = std::get<1>(result); |
| Blob& outBlob = std::get<2>(result); |
| Blob& charOutBlob = std::get<3>(result); |
| #endif |
| |
| rc = ResponseCode::SYSTEM_ERROR; |
| if (!keyBlob) return result; |
| auto hidlKeyBlob = blob2hidlVec(keyBlob); |
| auto& dev = keymasterDevice_; |
| |
| KeyStoreServiceReturnCode error; |
| |
| AuthorizationSet hwEnforced, swEnforced; |
| bool success = true; |
| |
| if (charBlob) { |
| std::tie(success, hwEnforced, swEnforced) = charBlob.getKeyCharacteristics(); |
| } |
| if (!success) { |
| LOG(ERROR) << "Failed to read cached key characteristics"; |
| return rc = ResponseCode::SYSTEM_ERROR, result; |
| } |
| |
| auto hidlCb = [&](ErrorCode ret, const KeyCharacteristics& keyCharacteristics) { |
| dev->logIfKeymasterVendorError(ret); |
| error = ret; |
| if (!error.isOk()) { |
| if (error == ErrorCode::INVALID_KEY_BLOB) { |
| log_key_integrity_violation(lockedEntry->alias().c_str(), lockedEntry->uid()); |
| } |
| return; |
| } |
| |
| // Replace the sw_enforced set with those persisted to disk, minus hw_enforced |
| AuthorizationSet softwareEnforced = keyCharacteristics.softwareEnforced; |
| hwEnforced = keyCharacteristics.hardwareEnforced; |
| swEnforced.Union(softwareEnforced); |
| softwareEnforced.Subtract(hwEnforced); |
| |
| // We only get the characteristics from keymaster if there was no cache file or the |
| // the chach file was a legacy cache file. So lets write a new cache file for the next time. |
| Blob newCharBlob; |
| success = newCharBlob.putKeyCharacteristics(hwEnforced, swEnforced); |
| if (!success) { |
| error = ResponseCode::SYSTEM_ERROR; |
| LOG(ERROR) << "Failed to serialize cached key characteristics"; |
| return; |
| } |
| |
| error = keyStore_->put(lockedEntry, {}, newCharBlob); |
| if (!error.isOk()) { |
| ALOGE("Failed to write key characteristics cache"); |
| return; |
| } |
| charBlob = std::move(newCharBlob); |
| }; |
| |
| if (!charBlob || charBlob.getType() == TYPE_KEY_CHARACTERISTICS) { |
| // this updates the key characteristics cache file to the new format or creates one in |
| // in the first place |
| rc = KS_HANDLE_HIDL_ERROR( |
| dev, dev->getKeyCharacteristics(hidlKeyBlob, clientId, appData, hidlCb)); |
| if (!rc.isOk()) { |
| return result; |
| } |
| |
| if (error == ErrorCode::KEY_REQUIRES_UPGRADE) { |
| AuthorizationSet upgradeParams; |
| if (clientId.size()) { |
| upgradeParams.push_back(TAG_APPLICATION_ID, clientId); |
| } |
| if (appData.size()) { |
| upgradeParams.push_back(TAG_APPLICATION_DATA, appData); |
| } |
| std::tie(rc, keyBlob) = upgradeKeyBlob(lockedEntry, upgradeParams); |
| if (!rc.isOk()) { |
| return result; |
| } |
| |
| auto upgradedHidlKeyBlob = blob2hidlVec(keyBlob); |
| |
| rc = KS_HANDLE_HIDL_ERROR( |
| dev, dev->getKeyCharacteristics(upgradedHidlKeyBlob, clientId, appData, hidlCb)); |
| if (!rc.isOk()) { |
| return result; |
| } |
| } |
| } |
| |
| resultCharacteristics.hardwareEnforced = hwEnforced.hidl_data(); |
| resultCharacteristics.softwareEnforced = swEnforced.hidl_data(); |
| |
| outBlob = std::move(keyBlob); |
| charOutBlob = std::move(charBlob); |
| rc = error; |
| return result; |
| } |
| |
| /** |
| * Get the auth token for this operation from the auth token table. |
| * |
| * Returns ResponseCode::NO_ERROR if the auth token was set or none was required. |
| * ::OP_AUTH_NEEDED if it is a per op authorization, no |
| * authorization token exists for that operation and |
| * failOnTokenMissing is false. |
| * KM_ERROR_KEY_USER_NOT_AUTHENTICATED if there is no valid auth |
| * token for the operation |
| */ |
| std::pair<KeyStoreServiceReturnCode, HardwareAuthToken> |
| KeymasterWorker::getAuthToken(const KeyCharacteristics& characteristics, uint64_t handle, |
| KeyPurpose purpose, bool failOnTokenMissing) { |
| |
| AuthorizationSet allCharacteristics(characteristics.softwareEnforced); |
| allCharacteristics.append(characteristics.hardwareEnforced.begin(), |
| characteristics.hardwareEnforced.end()); |
| |
| HardwareAuthToken authToken; |
| AuthTokenTable::Error err; |
| std::tie(err, authToken) = keyStore_->getAuthTokenTable().FindAuthorization( |
| allCharacteristics, static_cast<KeyPurpose>(purpose), handle); |
| |
| KeyStoreServiceReturnCode rc; |
| |
| switch (err) { |
| case AuthTokenTable::OK: |
| case AuthTokenTable::AUTH_NOT_REQUIRED: |
| rc = ResponseCode::NO_ERROR; |
| break; |
| |
| case AuthTokenTable::AUTH_TOKEN_NOT_FOUND: |
| case AuthTokenTable::AUTH_TOKEN_EXPIRED: |
| case AuthTokenTable::AUTH_TOKEN_WRONG_SID: |
| ALOGE("getAuthToken failed: %d", err); // STOPSHIP: debug only, to be removed |
| rc = ErrorCode::KEY_USER_NOT_AUTHENTICATED; |
| break; |
| |
| case AuthTokenTable::OP_HANDLE_REQUIRED: |
| rc = failOnTokenMissing ? KeyStoreServiceReturnCode(ErrorCode::KEY_USER_NOT_AUTHENTICATED) |
| : KeyStoreServiceReturnCode(ResponseCode::OP_AUTH_NEEDED); |
| break; |
| |
| default: |
| ALOGE("Unexpected FindAuthorization return value %d", err); |
| rc = ErrorCode::INVALID_ARGUMENT; |
| } |
| |
| return {rc, std::move(authToken)}; |
| } |
| |
| KeyStoreServiceReturnCode KeymasterWorker::abort(const sp<IBinder>& token) { |
| auto op = operationMap_.removeOperation(token, false /* wasOpSuccessful */); |
| if (op) { |
| keyStore_->getAuthTokenTable().MarkCompleted(op->handle); |
| return KS_HANDLE_HIDL_ERROR(keymasterDevice_, keymasterDevice_->abort(op->handle)); |
| } else { |
| return ErrorCode::INVALID_OPERATION_HANDLE; |
| } |
| } |
| |
| /** |
| * Prune the oldest pruneable operation. |
| */ |
| bool KeymasterWorker::pruneOperation() { |
| sp<IBinder> oldest = operationMap_.getOldestPruneableOperation(); |
| ALOGD("Trying to prune operation %p", oldest.get()); |
| size_t op_count_before_abort = operationMap_.getOperationCount(); |
| // We mostly ignore errors from abort() because all we care about is whether at least |
| // one operation has been removed. |
| auto rc = abort(oldest); |
| keyStore_->removeOperationDevice(oldest); |
| if (operationMap_.getOperationCount() >= op_count_before_abort) { |
| ALOGE("Failed to abort pruneable operation %p, error: %d", oldest.get(), rc.getErrorCode()); |
| return false; |
| } |
| return true; |
| } |
| |
| // My IDE defines "CAPTURE_MOVE(x) x" because it does not understand generalized lambda captures. |
| // It should never be redefined by a build system though. |
| #ifndef CAPTURE_MOVE |
| #define CAPTURE_MOVE(x) x = std::move(x) |
| #endif |
| |
| void KeymasterWorker::begin(LockedKeyBlobEntry lockedEntry, sp<IBinder> appToken, Blob keyBlob, |
| Blob charBlob, bool pruneable, KeyPurpose purpose, |
| AuthorizationSet opParams, hidl_vec<uint8_t> entropy, |
| worker_begin_cb worker_cb) { |
| |
| Worker::addRequest([this, CAPTURE_MOVE(lockedEntry), CAPTURE_MOVE(appToken), |
| CAPTURE_MOVE(keyBlob), CAPTURE_MOVE(charBlob), pruneable, purpose, |
| CAPTURE_MOVE(opParams), CAPTURE_MOVE(entropy), |
| CAPTURE_MOVE(worker_cb)]() mutable { |
| // Concurrently executed |
| |
| auto& dev = keymasterDevice_; |
| |
| KeyCharacteristics characteristics; |
| |
| { |
| hidl_vec<uint8_t> clientId; |
| hidl_vec<uint8_t> appData; |
| for (const auto& param : opParams) { |
| if (param.tag == Tag::APPLICATION_ID) { |
| clientId = authorizationValue(TAG_APPLICATION_ID, param).value(); |
| } else if (param.tag == Tag::APPLICATION_DATA) { |
| appData = authorizationValue(TAG_APPLICATION_DATA, param).value(); |
| } |
| } |
| KeyStoreServiceReturnCode error; |
| std::tie(error, characteristics, keyBlob, charBlob) = createKeyCharacteristicsCache( |
| lockedEntry, clientId, appData, std::move(keyBlob), std::move(charBlob)); |
| if (!error.isOk()) { |
| worker_cb(operationFailed(error)); |
| return; |
| } |
| } |
| |
| KeyStoreServiceReturnCode rc, authRc; |
| HardwareAuthToken authToken; |
| std::tie(authRc, authToken) = getAuthToken(characteristics, 0 /* no challenge */, purpose, |
| /*failOnTokenMissing*/ false); |
| |
| // If per-operation auth is needed we need to begin the operation and |
| // the client will need to authorize that operation before calling |
| // update. Any other auth issues stop here. |
| if (!authRc.isOk() && authRc != ResponseCode::OP_AUTH_NEEDED) { |
| return worker_cb(operationFailed(authRc)); |
| } |
| |
| // Add entropy to the device first. |
| if (entropy.size()) { |
| rc = KS_HANDLE_HIDL_ERROR(dev, dev->addRngEntropy(entropy)); |
| if (!rc.isOk()) { |
| return worker_cb(operationFailed(rc)); |
| } |
| } |
| |
| // Create a keyid for this key. |
| auto keyid = KeymasterEnforcement::CreateKeyId(blob2hidlVec(keyBlob)); |
| if (!keyid) { |
| ALOGE("Failed to create a key ID for authorization checking."); |
| return worker_cb(operationFailed(ErrorCode::UNKNOWN_ERROR)); |
| } |
| |
| // Check that all key authorization policy requirements are met. |
| AuthorizationSet key_auths = characteristics.hardwareEnforced; |
| key_auths.append(characteristics.softwareEnforced.begin(), |
| characteristics.softwareEnforced.end()); |
| |
| rc = keyStore_->getEnforcementPolicy().AuthorizeOperation( |
| purpose, *keyid, key_auths, opParams, authToken, 0 /* op_handle */, |
| true /* is_begin_operation */); |
| if (!rc.isOk()) { |
| return worker_cb(operationFailed(rc)); |
| } |
| |
| // If there are more than kMaxOperations, abort the oldest operation that was started as |
| // pruneable. |
| while (operationMap_.getOperationCount() >= kMaxOperations) { |
| ALOGD("Reached or exceeded concurrent operations limit"); |
| if (!pruneOperation()) { |
| break; |
| } |
| } |
| |
| android::security::keymaster::OperationResult result; |
| |
| auto hidlCb = [&](ErrorCode ret, const hidl_vec<KeyParameter>& outParams, |
| uint64_t operationHandle) { |
| dev->logIfKeymasterVendorError(ret); |
| result.resultCode = ret; |
| if (!result.resultCode.isOk()) { |
| if (result.resultCode == ErrorCode::INVALID_KEY_BLOB) { |
| log_key_integrity_violation(lockedEntry->alias().c_str(), lockedEntry->uid()); |
| } |
| return; |
| } |
| result.handle = operationHandle; |
| result.outParams = outParams; |
| }; |
| |
| do { |
| rc = KS_HANDLE_HIDL_ERROR(dev, dev->begin(purpose, blob2hidlVec(keyBlob), |
| opParams.hidl_data(), authToken, hidlCb)); |
| if (!rc.isOk()) { |
| LOG(ERROR) << "Got error " << rc << " from begin()"; |
| return worker_cb(operationFailed(ResponseCode::SYSTEM_ERROR)); |
| } |
| |
| if (result.resultCode == ErrorCode::KEY_REQUIRES_UPGRADE) { |
| std::tie(rc, keyBlob) = upgradeKeyBlob(lockedEntry, opParams); |
| if (!rc.isOk()) { |
| return worker_cb(operationFailed(rc)); |
| } |
| |
| rc = KS_HANDLE_HIDL_ERROR(dev, dev->begin(purpose, blob2hidlVec(keyBlob), |
| opParams.hidl_data(), authToken, hidlCb)); |
| if (!rc.isOk()) { |
| LOG(ERROR) << "Got error " << rc << " from begin()"; |
| return worker_cb(operationFailed(ResponseCode::SYSTEM_ERROR)); |
| } |
| } |
| // If there are too many operations abort the oldest operation that was |
| // started as pruneable and try again. |
| } while (result.resultCode == ErrorCode::TOO_MANY_OPERATIONS && pruneOperation()); |
| |
| rc = result.resultCode; |
| if (!rc.isOk()) { |
| return worker_cb(operationFailed(rc)); |
| } |
| |
| // Note: The operation map takes possession of the contents of "characteristics". |
| // It is safe to use characteristics after the following line but it will be empty. |
| sp<IBinder> operationToken = |
| operationMap_.addOperation(result.handle, *keyid, purpose, dev, appToken, |
| std::move(characteristics), opParams.hidl_data(), pruneable); |
| assert(characteristics.hardwareEnforced.size() == 0); |
| assert(characteristics.softwareEnforced.size() == 0); |
| result.token = operationToken; |
| |
| auto operation = operationMap_.getOperation(operationToken); |
| if (!operation) { |
| return worker_cb(operationFailed(ResponseCode::SYSTEM_ERROR)); |
| } |
| |
| if (authRc.isOk() && authToken.mac.size() && |
| dev->halVersion().securityLevel == SecurityLevel::STRONGBOX) { |
| operation->authTokenFuture = operation->authTokenPromise.get_future(); |
| std::weak_ptr<Operation> weak_operation = operation; |
| |
| auto verifyTokenCB = [weak_operation](KeyStoreServiceReturnCode rc, |
| HardwareAuthToken authToken, |
| VerificationToken verificationToken) { |
| auto operation = weak_operation.lock(); |
| if (!operation) { |
| // operation aborted, nothing to do |
| return; |
| } |
| if (rc.isOk()) { |
| operation->authToken = std::move(authToken); |
| operation->verificationToken = std::move(verificationToken); |
| } |
| operation->authTokenPromise.set_value(rc); |
| }; |
| auto teeKmDevice = keyStore_->getDevice(SecurityLevel::TRUSTED_ENVIRONMENT); |
| teeKmDevice->verifyAuthorization(result.handle, {}, std::move(authToken), |
| std::move(verifyTokenCB)); |
| } |
| |
| // Return the authentication lookup result. If this is a per operation |
| // auth'd key then the resultCode will be ::OP_AUTH_NEEDED and the |
| // application should get an auth token using the handle before the |
| // first call to update, which will fail if keystore hasn't received the |
| // auth token. |
| if (result.resultCode.isOk()) { |
| result.resultCode = authRc; |
| } |
| return worker_cb(result); |
| }); |
| } |
| |
| KeyStoreServiceReturnCode |
| KeymasterWorker::getOperationAuthTokenIfNeeded(std::shared_ptr<Operation> op) { |
| if (!op) return ErrorCode::INVALID_OPERATION_HANDLE; |
| |
| if (op->authTokenFuture.valid()) { |
| LOG(INFO) << "Waiting for verification token"; |
| op->authTokenFuture.wait(); |
| auto rc = op->authTokenFuture.get(); |
| if (!rc.isOk()) { |
| return rc; |
| } |
| op->authTokenFuture = {}; |
| } else if (!op->hasAuthToken()) { |
| KeyStoreServiceReturnCode rc; |
| HardwareAuthToken found; |
| std::tie(rc, found) = getAuthToken(op->characteristics, op->handle, op->purpose); |
| if (!rc.isOk()) return rc; |
| op->authToken = std::move(found); |
| } |
| |
| return ResponseCode::NO_ERROR; |
| } |
| |
| namespace { |
| |
| class Finalize { |
| private: |
| std::function<void()> f_; |
| |
| public: |
| explicit Finalize(std::function<void()> f) : f_(f) {} |
| ~Finalize() { |
| if (f_) f_(); |
| } |
| void release() { f_ = {}; } |
| }; |
| |
| } // namespace |
| |
| void KeymasterWorker::update(sp<IBinder> token, AuthorizationSet params, hidl_vec<uint8_t> data, |
| update_cb worker_cb) { |
| Worker::addRequest([this, CAPTURE_MOVE(token), CAPTURE_MOVE(params), CAPTURE_MOVE(data), |
| CAPTURE_MOVE(worker_cb)]() { |
| KeyStoreServiceReturnCode rc; |
| auto op = operationMap_.getOperation(token); |
| if (!op) { |
| return worker_cb(operationFailed(ErrorCode::INVALID_OPERATION_HANDLE)); |
| } |
| |
| Finalize abort_operation_in_case_of_error([&] { |
| operationMap_.removeOperation(token, false); |
| keyStore_->getAuthTokenTable().MarkCompleted(op->handle); |
| KS_HANDLE_HIDL_ERROR(keymasterDevice_, keymasterDevice_->abort(op->handle)); |
| }); |
| |
| rc = getOperationAuthTokenIfNeeded(op); |
| if (!rc.isOk()) return worker_cb(operationFailed(rc)); |
| |
| // Check that all key authorization policy requirements are met. |
| AuthorizationSet key_auths(op->characteristics.hardwareEnforced); |
| key_auths.append(op->characteristics.softwareEnforced.begin(), |
| op->characteristics.softwareEnforced.end()); |
| |
| rc = keyStore_->getEnforcementPolicy().AuthorizeOperation(op->purpose, op->keyid, key_auths, |
| params, op->authToken, op->handle, |
| false /* is_begin_operation */); |
| if (!rc.isOk()) return worker_cb(operationFailed(rc)); |
| |
| OperationResult result; |
| auto hidlCb = [&](ErrorCode ret, uint32_t inputConsumed, |
| const hidl_vec<KeyParameter>& outParams, |
| const ::std::vector<uint8_t>& output) { |
| op->device->logIfKeymasterVendorError(ret); |
| result.resultCode = ret; |
| if (result.resultCode.isOk()) { |
| result.inputConsumed = inputConsumed; |
| result.outParams = outParams; |
| result.data = output; |
| } |
| }; |
| |
| rc = KS_HANDLE_HIDL_ERROR(op->device, |
| op->device->update(op->handle, params.hidl_data(), data, |
| op->authToken, op->verificationToken, hidlCb)); |
| |
| // just a reminder: on success result->resultCode was set in the callback. So we only |
| // overwrite it if there was a communication error indicated by the ErrorCode. |
| if (!rc.isOk()) result.resultCode = rc; |
| if (result.resultCode.isOk()) { |
| // if everything went well we don't abort the operation. |
| abort_operation_in_case_of_error.release(); |
| } |
| return worker_cb(std::move(result)); |
| }); |
| } |
| |
| /** |
| * Check that all KeyParameters provided by the application are allowed. Any parameter that keystore |
| * adds itself should be disallowed here. |
| */ |
| template <typename ParamsIter> |
| static bool checkAllowedOperationParams(ParamsIter begin, const ParamsIter end) { |
| while (begin != end) { |
| switch (begin->tag) { |
| case Tag::ATTESTATION_APPLICATION_ID: |
| case Tag::RESET_SINCE_ID_ROTATION: |
| return false; |
| default: |
| break; |
| } |
| ++begin; |
| } |
| return true; |
| } |
| |
| void KeymasterWorker::finish(sp<IBinder> token, AuthorizationSet params, hidl_vec<uint8_t> input, |
| hidl_vec<uint8_t> signature, hidl_vec<uint8_t> entropy, |
| finish_cb worker_cb) { |
| Worker::addRequest([this, CAPTURE_MOVE(token), CAPTURE_MOVE(params), CAPTURE_MOVE(input), |
| CAPTURE_MOVE(signature), CAPTURE_MOVE(entropy), |
| CAPTURE_MOVE(worker_cb)]() mutable { |
| KeyStoreServiceReturnCode rc; |
| auto op = operationMap_.getOperation(token); |
| if (!op) { |
| return worker_cb(operationFailed(ErrorCode::INVALID_OPERATION_HANDLE)); |
| } |
| |
| bool finished = false; |
| Finalize abort_operation_in_case_of_error([&] { |
| operationMap_.removeOperation(token, finished && rc.isOk()); |
| keyStore_->getAuthTokenTable().MarkCompleted(op->handle); |
| if (!finished) |
| KS_HANDLE_HIDL_ERROR(keymasterDevice_, keymasterDevice_->abort(op->handle)); |
| }); |
| |
| if (!checkAllowedOperationParams(params.begin(), params.end())) { |
| return worker_cb(operationFailed(ErrorCode::INVALID_ARGUMENT)); |
| } |
| |
| rc = getOperationAuthTokenIfNeeded(op); |
| if (!rc.isOk()) return worker_cb(operationFailed(rc)); |
| |
| // Check that all key authorization policy requirements are met. |
| AuthorizationSet key_auths(op->characteristics.hardwareEnforced); |
| key_auths.append(op->characteristics.softwareEnforced.begin(), |
| op->characteristics.softwareEnforced.end()); |
| |
| if (key_auths.Contains(Tag::TRUSTED_CONFIRMATION_REQUIRED)) { |
| hidl_vec<uint8_t> confirmationToken = |
| keyStore_->getConfirmationManager().getLatestConfirmationToken(); |
| if (confirmationToken.size() == 0) { |
| LOG(ERROR) << "Confirmation token required but none found"; |
| return worker_cb(operationFailed(ErrorCode::NO_USER_CONFIRMATION)); |
| } |
| params.push_back(keymaster::TAG_CONFIRMATION_TOKEN, std::move(confirmationToken)); |
| } |
| |
| rc = keyStore_->getEnforcementPolicy().AuthorizeOperation(op->purpose, op->keyid, key_auths, |
| params, op->authToken, op->handle, |
| false /* is_begin_operation */); |
| if (!rc.isOk()) return worker_cb(operationFailed(rc)); |
| |
| if (entropy.size()) { |
| rc = KS_HANDLE_HIDL_ERROR(op->device, op->device->addRngEntropy(entropy)); |
| if (!rc.isOk()) { |
| return worker_cb(operationFailed(rc)); |
| } |
| } |
| |
| OperationResult result; |
| auto hidlCb = [&](ErrorCode ret, const hidl_vec<KeyParameter>& outParams, |
| const ::std::vector<uint8_t>& output) { |
| op->device->logIfKeymasterVendorError(ret); |
| result.resultCode = ret; |
| if (result.resultCode.isOk()) { |
| result.outParams = outParams; |
| result.data = output; |
| } |
| }; |
| |
| rc = KS_HANDLE_HIDL_ERROR(op->device, op->device->finish(op->handle, params.hidl_data(), |
| input, signature, op->authToken, |
| op->verificationToken, hidlCb)); |
| |
| if (rc.isOk()) { |
| // inform the finalizer that the finish call went through |
| finished = true; |
| // and what the result was |
| rc = result.resultCode; |
| } else { |
| return worker_cb(operationFailed(rc)); |
| } |
| return worker_cb(std::move(result)); |
| }); |
| } |
| |
| void KeymasterWorker::abort(sp<IBinder> token, abort_cb worker_cb) { |
| Worker::addRequest( |
| [this, CAPTURE_MOVE(token), CAPTURE_MOVE(worker_cb)]() { return worker_cb(abort(token)); }); |
| } |
| |
| void KeymasterWorker::verifyAuthorization(uint64_t challenge, hidl_vec<KeyParameter> params, |
| HardwareAuthToken token, |
| verifyAuthorization_cb worker_cb) { |
| Worker::addRequest([this, challenge, CAPTURE_MOVE(params), CAPTURE_MOVE(token), |
| CAPTURE_MOVE(worker_cb)]() { |
| KeyStoreServiceReturnCode error; |
| VerificationToken verificationToken; |
| KeyStoreServiceReturnCode rc = KS_HANDLE_HIDL_ERROR( |
| keymasterDevice_, |
| keymasterDevice_->verifyAuthorization( |
| challenge, params, token, [&](ErrorCode ret, const VerificationToken& vToken) { |
| keymasterDevice_->logIfKeymasterVendorError(ret); |
| error = ret; |
| verificationToken = vToken; |
| })); |
| worker_cb(rc.isOk() ? error : rc, std::move(token), std::move(verificationToken)); |
| }); |
| } |
| |
| void KeymasterWorker::addRngEntropy(hidl_vec<uint8_t> data, addRngEntropy_cb _hidl_cb) { |
| addRequest(&Keymaster::addRngEntropy, std::move(_hidl_cb), std::move(data)); |
| } |
| |
| namespace { |
| bool containsTag(const hidl_vec<KeyParameter>& params, Tag tag) { |
| return params.end() != |
| std::find_if(params.begin(), params.end(), |
| [&](const KeyParameter& param) { return param.tag == tag; }); |
| } |
| |
| bool isAuthenticationBound(const hidl_vec<KeyParameter>& params) { |
| return !containsTag(params, Tag::NO_AUTH_REQUIRED); |
| } |
| } // namespace |
| |
| void KeymasterWorker::generateKey(LockedKeyBlobEntry lockedEntry, hidl_vec<KeyParameter> keyParams, |
| hidl_vec<uint8_t> entropy, int flags, generateKey_cb worker_cb) { |
| Worker::addRequest([this, CAPTURE_MOVE(lockedEntry), CAPTURE_MOVE(keyParams), |
| CAPTURE_MOVE(entropy), CAPTURE_MOVE(worker_cb), flags]() mutable { |
| KeyStoreServiceReturnCode rc = |
| KS_HANDLE_HIDL_ERROR(keymasterDevice_, keymasterDevice_->addRngEntropy(entropy)); |
| if (!rc.isOk()) { |
| return worker_cb(rc, {}); |
| } |
| |
| SecurityLevel securityLevel = keymasterDevice_->halVersion().securityLevel; |
| |
| // Fallback cannot be considered for Strongbox. Further versions restrictions are enforced |
| // by KeyStore::getFallbackDevice() |
| bool consider_fallback = securityLevel == SecurityLevel::TRUSTED_ENVIRONMENT; |
| |
| Finalize logOnFail( |
| [&] { uploadKeyCharacteristicsAsProto(keyParams, false /* wasCreationSuccessful */); }); |
| |
| KeyCharacteristics outCharacteristics; |
| KeyStoreServiceReturnCode error; |
| auto hidl_cb = [&](ErrorCode ret, const hidl_vec<uint8_t>& hidlKeyBlob, |
| const KeyCharacteristics& keyCharacteristics) { |
| keymasterDevice_->logIfKeymasterVendorError(ret); |
| error = ret; |
| if (!error.isOk()) { |
| return; |
| } |
| consider_fallback = false; |
| outCharacteristics = keyCharacteristics; |
| |
| Blob keyBlob(&hidlKeyBlob[0], hidlKeyBlob.size(), nullptr, 0, ::TYPE_KEYMASTER_10); |
| keyBlob.setSecurityLevel(securityLevel); |
| keyBlob.setCriticalToDeviceEncryption(flags & |
| KEYSTORE_FLAG_CRITICAL_TO_DEVICE_ENCRYPTION); |
| if (isAuthenticationBound(keyParams) && !keyBlob.isCriticalToDeviceEncryption()) { |
| keyBlob.setSuperEncrypted(true); |
| } |
| keyBlob.setEncrypted(flags & KEYSTORE_FLAG_ENCRYPTED); |
| |
| AuthorizationSet sw_enforced = keyParams; |
| sw_enforced.Subtract(outCharacteristics.hardwareEnforced); |
| sw_enforced.Union(outCharacteristics.softwareEnforced); |
| sw_enforced.Filter([](const KeyParameter& param) -> bool { |
| return !(param.tag == Tag::APPLICATION_DATA || param.tag == Tag::APPLICATION_ID); |
| }); |
| if (!sw_enforced.Contains(Tag::USER_ID)) { |
| // Most Java processes don't have access to this tag |
| sw_enforced.push_back(keymaster::TAG_USER_ID, get_user_id(lockedEntry->uid())); |
| } |
| Blob keyCharBlob; |
| keyCharBlob.putKeyCharacteristics(outCharacteristics.hardwareEnforced, sw_enforced); |
| error = keyStore_->put(lockedEntry, std::move(keyBlob), std::move(keyCharBlob)); |
| }; |
| |
| rc = KS_HANDLE_HIDL_ERROR(keymasterDevice_, |
| keymasterDevice_->generateKey(keyParams, hidl_cb)); |
| if (!rc.isOk()) { |
| return worker_cb(rc, {}); |
| } |
| |
| if (consider_fallback && !error.isOk()) { |
| auto fallback = keyStore_->getFallbackDevice(); |
| if (!fallback) { |
| return worker_cb(error, {}); |
| } |
| // No fallback for 3DES |
| for (auto& param : keyParams) { |
| auto algorithm = authorizationValue(TAG_ALGORITHM, param); |
| if (algorithm.isOk() && algorithm.value() == Algorithm::TRIPLE_DES) { |
| return worker_cb(ErrorCode::UNSUPPORTED_ALGORITHM, {}); |
| } |
| } |
| |
| // delegate to fallback worker |
| fallback->generateKey(std::move(lockedEntry), std::move(keyParams), std::move(entropy), |
| flags, std::move(worker_cb)); |
| // let fallback do the logging |
| logOnFail.release(); |
| return; |
| } |
| |
| if (!error.isOk()) return worker_cb(error, {}); |
| |
| // log on success |
| logOnFail.release(); |
| uploadKeyCharacteristicsAsProto(keyParams, true /* wasCreationSuccessful */); |
| |
| return worker_cb(error, std::move(outCharacteristics)); |
| }); |
| } |
| |
| void KeymasterWorker::generateKey(hidl_vec<KeyParameter> keyParams, generateKey2_cb worker_cb) { |
| addRequest(&Keymaster::generateKey, std::move(worker_cb), std::move(keyParams)); |
| } |
| |
| void KeymasterWorker::getKeyCharacteristics(LockedKeyBlobEntry lockedEntry, |
| hidl_vec<uint8_t> clientId, hidl_vec<uint8_t> appData, |
| Blob keyBlob, Blob charBlob, |
| getKeyCharacteristics_cb worker_cb) { |
| Worker::addRequest([this, CAPTURE_MOVE(lockedEntry), CAPTURE_MOVE(clientId), |
| CAPTURE_MOVE(appData), CAPTURE_MOVE(keyBlob), CAPTURE_MOVE(charBlob), |
| CAPTURE_MOVE(worker_cb)]() { |
| auto result = createKeyCharacteristicsCache(lockedEntry, clientId, appData, |
| std::move(keyBlob), std::move(charBlob)); |
| return worker_cb(std::get<0>(result), std::move(std::get<1>(result))); |
| }); |
| } |
| |
| void KeymasterWorker::importKey(LockedKeyBlobEntry lockedEntry, hidl_vec<KeyParameter> keyParams, |
| KeyFormat keyFormat, hidl_vec<uint8_t> keyData, int flags, |
| importKey_cb worker_cb) { |
| Worker::addRequest([this, CAPTURE_MOVE(lockedEntry), CAPTURE_MOVE(keyParams), keyFormat, |
| CAPTURE_MOVE(keyData), flags, CAPTURE_MOVE(worker_cb)]() mutable { |
| SecurityLevel securityLevel = keymasterDevice_->halVersion().securityLevel; |
| |
| // Fallback cannot be considered for Strongbox. Further versions restrictions are enforced |
| // by KeyStore::getFallbackDevice() |
| bool consider_fallback = securityLevel == SecurityLevel::TRUSTED_ENVIRONMENT; |
| |
| Finalize logOnFail( |
| [&] { uploadKeyCharacteristicsAsProto(keyParams, false /* wasCreationSuccessful */); }); |
| |
| KeyCharacteristics outCharacteristics; |
| KeyStoreServiceReturnCode error; |
| auto hidl_cb = [&](ErrorCode ret, const hidl_vec<uint8_t>& hidlKeyBlob, |
| const KeyCharacteristics& keyCharacteristics) { |
| keymasterDevice_->logIfKeymasterVendorError(ret); |
| error = ret; |
| if (!error.isOk()) { |
| LOG(INFO) << "importKey failed"; |
| return; |
| } |
| consider_fallback = false; |
| outCharacteristics = keyCharacteristics; |
| |
| Blob keyBlob(&hidlKeyBlob[0], hidlKeyBlob.size(), nullptr, 0, ::TYPE_KEYMASTER_10); |
| keyBlob.setSecurityLevel(securityLevel); |
| keyBlob.setCriticalToDeviceEncryption(flags & |
| KEYSTORE_FLAG_CRITICAL_TO_DEVICE_ENCRYPTION); |
| if (isAuthenticationBound(keyParams) && !keyBlob.isCriticalToDeviceEncryption()) { |
| keyBlob.setSuperEncrypted(true); |
| } |
| keyBlob.setEncrypted(flags & KEYSTORE_FLAG_ENCRYPTED); |
| |
| AuthorizationSet sw_enforced = keyParams; |
| sw_enforced.Subtract(outCharacteristics.hardwareEnforced); |
| sw_enforced.Union(outCharacteristics.softwareEnforced); |
| sw_enforced.Filter([](const KeyParameter& param) -> bool { |
| return !(param.tag == Tag::APPLICATION_DATA || param.tag == Tag::APPLICATION_ID); |
| }); |
| if (!sw_enforced.Contains(Tag::USER_ID)) { |
| // Most Java processes don't have access to this tag |
| sw_enforced.push_back(keymaster::TAG_USER_ID, get_user_id(lockedEntry->uid())); |
| } |
| Blob keyCharBlob; |
| keyCharBlob.putKeyCharacteristics(outCharacteristics.hardwareEnforced, sw_enforced); |
| error = keyStore_->put(lockedEntry, std::move(keyBlob), std::move(keyCharBlob)); |
| }; |
| |
| KeyStoreServiceReturnCode rc = KS_HANDLE_HIDL_ERROR( |
| keymasterDevice_, keymasterDevice_->importKey(keyParams, keyFormat, keyData, hidl_cb)); |
| if (!rc.isOk()) { |
| return worker_cb(rc, {}); |
| } |
| |
| if (consider_fallback && !error.isOk()) { |
| auto fallback = keyStore_->getFallbackDevice(); |
| if (!fallback) { |
| return worker_cb(error, {}); |
| } |
| // No fallback for 3DES |
| for (auto& param : keyParams) { |
| auto algorithm = authorizationValue(TAG_ALGORITHM, param); |
| if (algorithm.isOk() && algorithm.value() == Algorithm::TRIPLE_DES) { |
| return worker_cb(ErrorCode::UNSUPPORTED_ALGORITHM, {}); |
| } |
| } |
| |
| // delegate to fallback worker |
| fallback->importKey(std::move(lockedEntry), std::move(keyParams), keyFormat, |
| std::move(keyData), flags, std::move(worker_cb)); |
| // let fallback to the logging |
| logOnFail.release(); |
| return; |
| } |
| |
| if (!error.isOk()) return worker_cb(error, {}); |
| |
| // log on success |
| logOnFail.release(); |
| uploadKeyCharacteristicsAsProto(keyParams, true /* wasCreationSuccessful */); |
| |
| return worker_cb(error, std::move(outCharacteristics)); |
| }); |
| } |
| |
| void KeymasterWorker::importWrappedKey(LockedKeyBlobEntry wrappingLockedEntry, |
| LockedKeyBlobEntry wrapppedLockedEntry, |
| hidl_vec<uint8_t> wrappedKeyData, |
| hidl_vec<uint8_t> maskingKey, |
| hidl_vec<KeyParameter> unwrappingParams, Blob wrappingBlob, |
| Blob wrappingCharBlob, uint64_t passwordSid, |
| uint64_t biometricSid, importWrappedKey_cb worker_cb) { |
| Worker::addRequest([this, CAPTURE_MOVE(wrappingLockedEntry), CAPTURE_MOVE(wrapppedLockedEntry), |
| CAPTURE_MOVE(wrappedKeyData), CAPTURE_MOVE(maskingKey), |
| CAPTURE_MOVE(unwrappingParams), CAPTURE_MOVE(wrappingBlob), |
| CAPTURE_MOVE(wrappingCharBlob), passwordSid, biometricSid, |
| CAPTURE_MOVE(worker_cb)]() mutable { |
| auto hidlWrappingKey = blob2hidlVec(wrappingBlob); |
| |
| SecurityLevel securityLevel = keymasterDevice_->halVersion().securityLevel; |
| |
| KeyCharacteristics outCharacteristics; |
| KeyStoreServiceReturnCode error; |
| |
| auto hidlCb = [&](ErrorCode ret, const hidl_vec<uint8_t>& hidlKeyBlob, |
| const KeyCharacteristics& keyCharacteristics) { |
| keymasterDevice_->logIfKeymasterVendorError(ret); |
| error = ret; |
| if (!error.isOk()) { |
| return; |
| } |
| outCharacteristics = keyCharacteristics; |
| |
| Blob keyBlob(hidlKeyBlob.data(), hidlKeyBlob.size(), nullptr, 0, ::TYPE_KEYMASTER_10); |
| keyBlob.setSecurityLevel(securityLevel); |
| if (isAuthenticationBound(keyCharacteristics.hardwareEnforced)) { |
| keyBlob.setSuperEncrypted(true); |
| } |
| |
| AuthorizationSet sw_enforced = outCharacteristics.softwareEnforced; |
| if (!sw_enforced.Contains(Tag::USER_ID)) { |
| // Most Java processes don't have access to this tag |
| sw_enforced.push_back(keymaster::TAG_USER_ID, |
| get_user_id(wrapppedLockedEntry->uid())); |
| } |
| Blob keyCharBlob; |
| keyCharBlob.putKeyCharacteristics(outCharacteristics.hardwareEnforced, sw_enforced); |
| error = keyStore_->put(wrapppedLockedEntry, std::move(keyBlob), std::move(keyCharBlob)); |
| }; |
| |
| KeyStoreServiceReturnCode rc = KS_HANDLE_HIDL_ERROR( |
| keymasterDevice_, keymasterDevice_->importWrappedKey( |
| wrappedKeyData, hidlWrappingKey, maskingKey, unwrappingParams, |
| passwordSid, biometricSid, hidlCb)); |
| |
| // possible hidl error |
| if (!rc.isOk()) { |
| return worker_cb(rc, {}); |
| } |
| |
| if (error == ErrorCode::KEY_REQUIRES_UPGRADE) { |
| std::tie(rc, wrappingBlob) = upgradeKeyBlob(wrappingLockedEntry, {}); |
| if (!rc.isOk()) { |
| return worker_cb(rc, {}); |
| } |
| |
| auto upgradedHidlKeyBlob = blob2hidlVec(wrappingBlob); |
| |
| rc = KS_HANDLE_HIDL_ERROR(keymasterDevice_, |
| keymasterDevice_->importWrappedKey( |
| wrappedKeyData, upgradedHidlKeyBlob, maskingKey, |
| unwrappingParams, passwordSid, biometricSid, hidlCb)); |
| if (!rc.isOk()) { |
| error = rc; |
| } |
| } |
| return worker_cb(error, std::move(outCharacteristics)); |
| }); |
| } |
| |
| void KeymasterWorker::exportKey(LockedKeyBlobEntry lockedEntry, KeyFormat exportFormat, |
| hidl_vec<uint8_t> clientId, hidl_vec<uint8_t> appData, Blob keyBlob, |
| Blob charBlob, exportKey_cb worker_cb) { |
| Worker::addRequest([this, CAPTURE_MOVE(lockedEntry), exportFormat, CAPTURE_MOVE(clientId), |
| CAPTURE_MOVE(appData), CAPTURE_MOVE(keyBlob), CAPTURE_MOVE(charBlob), |
| CAPTURE_MOVE(worker_cb)]() mutable { |
| auto key = blob2hidlVec(keyBlob); |
| |
| ExportResult result; |
| auto hidlCb = [&](ErrorCode ret, |
| const ::android::hardware::hidl_vec<uint8_t>& keyMaterial) { |
| keymasterDevice_->logIfKeymasterVendorError(ret); |
| result.resultCode = ret; |
| if (!result.resultCode.isOk()) { |
| if (result.resultCode == ErrorCode::INVALID_KEY_BLOB) { |
| log_key_integrity_violation(lockedEntry->alias().c_str(), lockedEntry->uid()); |
| } |
| return; |
| } |
| result.exportData = keyMaterial; |
| }; |
| KeyStoreServiceReturnCode rc = KS_HANDLE_HIDL_ERROR( |
| keymasterDevice_, |
| keymasterDevice_->exportKey(exportFormat, key, clientId, appData, hidlCb)); |
| |
| // Overwrite result->resultCode only on HIDL error. Otherwise we want the result set in the |
| // callback hidlCb. |
| if (!rc.isOk()) { |
| result.resultCode = rc; |
| } |
| |
| if (result.resultCode == ErrorCode::KEY_REQUIRES_UPGRADE) { |
| AuthorizationSet upgradeParams; |
| if (clientId.size()) { |
| upgradeParams.push_back(TAG_APPLICATION_ID, clientId); |
| } |
| if (appData.size()) { |
| upgradeParams.push_back(TAG_APPLICATION_DATA, appData); |
| } |
| std::tie(rc, keyBlob) = upgradeKeyBlob(lockedEntry, upgradeParams); |
| if (!rc.isOk()) { |
| return worker_cb(std::move(result)); |
| } |
| |
| auto upgradedHidlKeyBlob = blob2hidlVec(keyBlob); |
| |
| rc = KS_HANDLE_HIDL_ERROR(keymasterDevice_, |
| keymasterDevice_->exportKey(exportFormat, upgradedHidlKeyBlob, |
| clientId, appData, hidlCb)); |
| if (!rc.isOk()) { |
| result.resultCode = rc; |
| } |
| } |
| return worker_cb(std::move(result)); |
| }); |
| } |
| void KeymasterWorker::attestKey(hidl_vec<uint8_t> keyToAttest, hidl_vec<KeyParameter> attestParams, |
| attestKey_cb worker_cb) { |
| addRequest(&Keymaster::attestKey, std::move(worker_cb), std::move(keyToAttest), |
| std::move(attestParams)); |
| } |
| |
| void KeymasterWorker::deleteKey(hidl_vec<uint8_t> keyBlob, deleteKey_cb _hidl_cb) { |
| addRequest(&Keymaster::deleteKey, std::move(_hidl_cb), std::move(keyBlob)); |
| } |
| |
| void KeymasterWorker::binderDied(android::wp<IBinder> who) { |
| Worker::addRequest([this, who]() { |
| auto operations = operationMap_.getOperationsForToken(who.unsafe_get()); |
| for (const auto& token : operations) { |
| abort(token); |
| keyStore_->removeOperationDevice(token); |
| } |
| }); |
| } |
| |
| } // namespace keystore |