platform_hardware_interfaces/identity/aidl/default/common/PresentationSession.h
David Zeuthen f3e0600395 identity: Add support for ECDSA auth and don't require session encryption.
This adds a new method which allows applications to use mdoc ECDSA
authentication instead of mdoc MAC authentication. Additionally, also
relax requirements on SessionTranscript so the APIs can be used even
when mdoc session encryption isn't being used.

Also add new VTS test to check for this.

Since this is new API, bump API version to 5 and the Identity
Credential feature version to 202301.

Bug: 241912421
Test: atest VtsHalIdentityTargetTest
Test: atest android.security.identity.cts
Change-Id: I4085a89be0382c10f5449e13c6a92a46c74c225d
2022-12-09 02:57:09 -05:00

89 lines
3.1 KiB
C++

/*
* 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,
HardwareInformation hardwareInformation)
: hwProxyFactory_(std::move(hwProxyFactory)),
hwProxy_(std::move(hwProxy)),
hardwareInformation_(std::move(hardwareInformation)) {}
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_;
HardwareInformation hardwareInformation_;
// Set by initialize()
uint64_t id_;
uint64_t authChallenge_;
// Set by getEphemeralKeyPair()
vector<uint8_t> ephemeralKeyPair_;
// 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