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/*
** Copyright 2020, 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.
*/
#pragma once
#include "Keymaster.h"
namespace android::hardware::keymaster::V4_1::support {
using android::sp;
/**
* This class can wrap either a V4_0 or V4_1 IKeymasterDevice.
*/
class Keymaster4 : public Keymaster {
public:
// This definition is used for device enumeration; enumerating 4.0 devices will also
// enumerate 4.1. devices.
using WrappedIKeymasterDevice = V4_0::IKeymasterDevice;
Keymaster4(sp<V4_0::IKeymasterDevice> km4_0_dev, const hidl_string& instanceName)
: Keymaster(V4_1::IKeymasterDevice::descriptor, instanceName),
haveVersion_(false),
km4_0_dev_(km4_0_dev),
km4_1_dev_(V4_1::IKeymasterDevice::castFrom(km4_0_dev)) {}
const VersionResult& halVersion() const override {
const_cast<Keymaster4*>(this)->getVersionIfNeeded();
return version_;
}
/**********************************
* V4_0::IKeymasterDevice methods *
*********************************/
Return<void> getHardwareInfo(getHardwareInfo_cb _hidl_cb) override {
return km4_0_dev_->getHardwareInfo(_hidl_cb);
}
Return<void> getHmacSharingParameters(getHmacSharingParameters_cb _hidl_cb) override {
return km4_0_dev_->getHmacSharingParameters(_hidl_cb);
}
Return<void> computeSharedHmac(const hidl_vec<HmacSharingParameters>& params,
computeSharedHmac_cb _hidl_cb) override {
return km4_0_dev_->computeSharedHmac(params, _hidl_cb);
}
Return<void> verifyAuthorization(uint64_t operationHandle, const hidl_vec<KeyParameter>& params,
const HardwareAuthToken& authToken,
verifyAuthorization_cb _hidl_cb) override {
return km4_0_dev_->verifyAuthorization(operationHandle, params, authToken, _hidl_cb);
}
Return<V4_0::ErrorCode> addRngEntropy(const hidl_vec<uint8_t>& data) override {
return km4_0_dev_->addRngEntropy(data);
}
Return<void> generateKey(const hidl_vec<KeyParameter>& keyParams,
generateKey_cb _hidl_cb) override {
return km4_0_dev_->generateKey(keyParams, _hidl_cb);
}
Return<void> getKeyCharacteristics(const hidl_vec<uint8_t>& keyBlob,
const hidl_vec<uint8_t>& clientId,
const hidl_vec<uint8_t>& appData,
getKeyCharacteristics_cb _hidl_cb) override {
return km4_0_dev_->getKeyCharacteristics(keyBlob, clientId, appData, _hidl_cb);
}
Return<void> importKey(const hidl_vec<KeyParameter>& params, KeyFormat keyFormat,
const hidl_vec<uint8_t>& keyData, importKey_cb _hidl_cb) override {
return km4_0_dev_->importKey(params, keyFormat, keyData, _hidl_cb);
}
Return<void> importWrappedKey(const hidl_vec<uint8_t>& wrappedKeyData,
const hidl_vec<uint8_t>& wrappingKeyBlob,
const hidl_vec<uint8_t>& maskingKey,
const hidl_vec<KeyParameter>& unwrappingParams,
uint64_t passwordSid, uint64_t biometricSid,
importWrappedKey_cb _hidl_cb) {
return km4_0_dev_->importWrappedKey(wrappedKeyData, wrappingKeyBlob, maskingKey,
unwrappingParams, passwordSid, biometricSid, _hidl_cb);
}
Return<void> exportKey(KeyFormat exportFormat, const hidl_vec<uint8_t>& keyBlob,
const hidl_vec<uint8_t>& clientId, const hidl_vec<uint8_t>& appData,
exportKey_cb _hidl_cb) override {
return km4_0_dev_->exportKey(exportFormat, keyBlob, clientId, appData, _hidl_cb);
}
Return<void> attestKey(const hidl_vec<uint8_t>& keyToAttest,
const hidl_vec<KeyParameter>& attestParams,
attestKey_cb _hidl_cb) override {
return km4_0_dev_->attestKey(keyToAttest, attestParams, _hidl_cb);
}
Return<void> upgradeKey(const hidl_vec<uint8_t>& keyBlobToUpgrade,
const hidl_vec<KeyParameter>& upgradeParams,
upgradeKey_cb _hidl_cb) override {
return km4_0_dev_->upgradeKey(keyBlobToUpgrade, upgradeParams, _hidl_cb);
}
Return<V4_0::ErrorCode> deleteKey(const hidl_vec<uint8_t>& keyBlob) override {
return km4_0_dev_->deleteKey(keyBlob);
}
Return<V4_0::ErrorCode> deleteAllKeys() override { return km4_0_dev_->deleteAllKeys(); }
Return<V4_0::ErrorCode> destroyAttestationIds() override {
return km4_0_dev_->destroyAttestationIds();
}
Return<void> begin(KeyPurpose purpose, const hidl_vec<uint8_t>& key,
const hidl_vec<KeyParameter>& inParams, const HardwareAuthToken& authToken,
begin_cb _hidl_cb) override {
return km4_0_dev_->begin(purpose, key, inParams, authToken, _hidl_cb);
}
Return<void> update(uint64_t operationHandle, const hidl_vec<KeyParameter>& inParams,
const hidl_vec<uint8_t>& input, const HardwareAuthToken& authToken,
const VerificationToken& verificationToken, update_cb _hidl_cb) override {
return km4_0_dev_->update(operationHandle, inParams, input, authToken, verificationToken,
_hidl_cb);
}
Return<void> finish(uint64_t operationHandle, const hidl_vec<KeyParameter>& inParams,
const hidl_vec<uint8_t>& input, const hidl_vec<uint8_t>& signature,
const HardwareAuthToken& authToken,
const VerificationToken& verificationToken, finish_cb _hidl_cb) override {
return km4_0_dev_->finish(operationHandle, inParams, input, signature, authToken,
verificationToken, _hidl_cb);
}
Return<V4_0::ErrorCode> abort(uint64_t operationHandle) override {
return km4_0_dev_->abort(operationHandle);
}
/**********************************
* V4_1::IKeymasterDevice methods *
*********************************/
Return<ErrorCode> deviceLocked(bool passwordOnly,
const VerificationToken& verificationToken) override {
if (km4_1_dev_) return km4_1_dev_->deviceLocked(passwordOnly, verificationToken);
return ErrorCode::UNIMPLEMENTED;
}
Return<ErrorCode> earlyBootEnded() override {
if (km4_1_dev_) return km4_1_dev_->earlyBootEnded();
return ErrorCode::UNIMPLEMENTED;
}
private:
void getVersionIfNeeded();
bool haveVersion_;
VersionResult version_;
sp<V4_0::IKeymasterDevice> km4_0_dev_;
sp<V4_1::IKeymasterDevice> km4_1_dev_;
}; // namespace android::hardware::keymaster::V4_1::support
} // namespace android::hardware::keymaster::V4_1::support
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