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/*
* Copyright 2021, 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.
*/
#ifndef ANDROID_HARDWARE_IDENTITY_PRESENTATIONSESSION_H
#define ANDROID_HARDWARE_IDENTITY_PRESENTATIONSESSION_H
#include <aidl/android/hardware/identity/BnPresentationSession.h>
#include <android/hardware/identity/support/IdentityCredentialSupport.h>
#include <vector>
#include <cppbor.h>
#include "IdentityCredentialStore.h"
#include "SecureHardwareProxy.h"
namespace aidl::android::hardware::identity {
using ::aidl::android::hardware::keymaster::HardwareAuthToken;
using ::aidl::android::hardware::keymaster::VerificationToken;
using ::android::sp;
using ::android::hardware::identity::SecureHardwareSessionProxy;
using ::std::vector;
class PresentationSession : public BnPresentationSession {
public:
PresentationSession(sp<SecureHardwareProxyFactory> hwProxyFactory,
sp<SecureHardwareSessionProxy> hwProxy)
: hwProxyFactory_(std::move(hwProxyFactory)), hwProxy_(std::move(hwProxy)) {}
virtual ~PresentationSession();
// Creates ephemeral key and auth-challenge in TA. Returns a status code from
// IIdentityCredentialStore. Must be called right after construction.
int initialize();
uint64_t getSessionId();
vector<uint8_t> getSessionTranscript();
vector<uint8_t> getReaderEphemeralPublicKey();
// Methods from IPresentationSession follow.
ndk::ScopedAStatus getEphemeralKeyPair(vector<uint8_t>* outKeyPair) override;
ndk::ScopedAStatus getAuthChallenge(int64_t* outChallenge) override;
ndk::ScopedAStatus setReaderEphemeralPublicKey(const vector<uint8_t>& publicKey) override;
ndk::ScopedAStatus setSessionTranscript(const vector<uint8_t>& sessionTranscript) override;
ndk::ScopedAStatus getCredential(const vector<uint8_t>& credentialData,
shared_ptr<IIdentityCredential>* outCredential) override;
private:
// Set by constructor
sp<SecureHardwareProxyFactory> hwProxyFactory_;
sp<SecureHardwareSessionProxy> hwProxy_;
// Set by initialize()
uint64_t id_;
vector<uint8_t> ephemeralKeyPair_;
uint64_t authChallenge_;
// Set by setReaderEphemeralPublicKey()
vector<uint8_t> readerPublicKey_;
// Set by setSessionTranscript()
vector<uint8_t> sessionTranscript_;
};
} // namespace aidl::android::hardware::identity
#endif // ANDROID_HARDWARE_IDENTITY_PRESENTATIONSESSION_H
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