5ac2c87c7a
This change includes the code necessary to communicate to the IRemotelyProvisionedComponent backend implementation running in Trusty. It also makes the relevant changes to the manifest XML file to add the IRemotelyProvisionedComponent HAL. Ignore-AOSP-First: Will cherry-pick to AOSP Bug: 192228022 Test: atest VtsHalRemotelyProvisionedComponentTargetTest Change-Id: I32c30ce2dc44e95ff91574ce405f10e3b5dc9699
120 lines
4.5 KiB
C++
120 lines
4.5 KiB
C++
/*
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* Copyright 2021, The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <trusty_keymaster/TrustyRemotelyProvisionedComponentDevice.h>
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#include <assert.h>
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#include <variant>
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#include <KeyMintUtils.h>
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#include <keymaster/keymaster_configuration.h>
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#include <trusty_keymaster/TrustyKeyMintDevice.h>
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namespace aidl::android::hardware::security::keymint::trusty {
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using keymaster::GenerateCsrRequest;
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using keymaster::GenerateCsrResponse;
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using keymaster::GenerateRkpKeyRequest;
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using keymaster::GenerateRkpKeyResponse;
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using keymaster::KeymasterBlob;
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using ::std::string;
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using ::std::unique_ptr;
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using ::std::vector;
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using bytevec = ::std::vector<uint8_t>;
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namespace {
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constexpr auto STATUS_FAILED = IRemotelyProvisionedComponent::STATUS_FAILED;
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struct AStatusDeleter {
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void operator()(AStatus* p) { AStatus_delete(p); }
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};
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class Status {
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public:
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Status() : status_(AStatus_newOk()) {}
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Status(int32_t errCode, const std::string& errMsg)
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: status_(AStatus_fromServiceSpecificErrorWithMessage(errCode, errMsg.c_str())) {}
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explicit Status(const std::string& errMsg)
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: status_(AStatus_fromServiceSpecificErrorWithMessage(STATUS_FAILED, errMsg.c_str())) {}
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explicit Status(AStatus* status) : status_(status ? status : AStatus_newOk()) {}
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Status(Status&&) = default;
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Status(const Status&) = delete;
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operator ::ndk::ScopedAStatus() && { // NOLINT(google-explicit-constructor)
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return ndk::ScopedAStatus(status_.release());
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}
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bool isOk() const { return AStatus_isOk(status_.get()); }
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const char* getMessage() const { return AStatus_getMessage(status_.get()); }
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private:
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std::unique_ptr<AStatus, AStatusDeleter> status_;
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};
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} // namespace
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ScopedAStatus TrustyRemotelyProvisionedComponentDevice::getHardwareInfo(RpcHardwareInfo* info) {
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info->versionNumber = 1;
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info->rpcAuthorName = "Google";
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info->supportedEekCurve = RpcHardwareInfo::CURVE_25519;
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return ScopedAStatus::ok();
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}
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ScopedAStatus TrustyRemotelyProvisionedComponentDevice::generateEcdsaP256KeyPair(
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bool testMode, MacedPublicKey* macedPublicKey, bytevec* privateKeyHandle) {
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GenerateRkpKeyRequest request(impl_->message_version());
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request.test_mode = testMode;
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GenerateRkpKeyResponse response(impl_->message_version());
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impl_->GenerateRkpKey(request, &response);
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if (response.error != KM_ERROR_OK) {
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return Status(-static_cast<int32_t>(response.error), "Failure in key generation.");
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}
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macedPublicKey->macedKey = km_utils::kmBlob2vector(response.maced_public_key);
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*privateKeyHandle = km_utils::kmBlob2vector(response.key_blob);
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return ScopedAStatus::ok();
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}
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ScopedAStatus TrustyRemotelyProvisionedComponentDevice::generateCertificateRequest(
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bool testMode, const vector<MacedPublicKey>& keysToSign,
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const bytevec& endpointEncCertChain, const bytevec& challenge, DeviceInfo* deviceInfo,
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ProtectedData* protectedData, bytevec* keysToSignMac) {
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GenerateCsrRequest request(impl_->message_version());
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request.test_mode = testMode;
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request.num_keys = keysToSign.size();
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request.keys_to_sign_array = new KeymasterBlob[keysToSign.size()];
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for (size_t i = 0; i < keysToSign.size(); i++) {
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request.SetKeyToSign(i, keysToSign[i].macedKey.data(), keysToSign[i].macedKey.size());
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}
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request.SetEndpointEncCertChain(endpointEncCertChain.data(), endpointEncCertChain.size());
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request.SetChallenge(challenge.data(), challenge.size());
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GenerateCsrResponse response(impl_->message_version());
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impl_->GenerateCsr(request, &response);
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if (response.error != KM_ERROR_OK) {
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return Status(-static_cast<int32_t>(response.error), "Failure in CSR Generation.");
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}
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deviceInfo->deviceInfo = km_utils::kmBlob2vector(response.device_info_blob);
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protectedData->protectedData = km_utils::kmBlob2vector(response.protected_data_blob);
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*keysToSignMac = km_utils::kmBlob2vector(response.keys_to_sign_mac);
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return ScopedAStatus::ok();
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}
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} // namespace aidl::android::hardware::security::keymint::trusty
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