Support encrypted linked device names.
This commit is contained in:
Greyson Parrelli
parent
4ab02f5b9c
commit
c6f3a66cad
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@ -0,0 +1,15 @@
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/**
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* Copyright (C) 2014-2016 Open Whisper Systems
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*
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* Licensed according to the LICENSE file in this repository.
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*/
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package signalservice;
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option java_package = "org.thoughtcrime.securesms.devicelist";
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option java_outer_classname = "DeviceNameProtos";
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message DeviceName {
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optional bytes ephemeralPublic = 1;
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optional bytes syntheticIv = 2;
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optional bytes ciphertext = 3;
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}
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@ -1,3 +1,3 @@
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all:
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protoc --java_out=../src/ WebRtcData.proto Backups.proto
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protoc --java_out=../src/ WebRtcData.proto Backups.proto DeviceName.proto
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@ -10,6 +10,7 @@ import android.support.v4.app.LoaderManager;
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import android.support.v4.content.Loader;
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import android.support.v7.app.AlertDialog;
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import org.thoughtcrime.securesms.devicelist.Device;
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import org.thoughtcrime.securesms.jobs.RefreshUnidentifiedDeliveryAbilityJob;
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import org.thoughtcrime.securesms.logging.Log;
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import android.view.LayoutInflater;
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@ -29,7 +30,6 @@ import org.thoughtcrime.securesms.util.task.ProgressDialogAsyncTask;
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import org.thoughtcrime.securesms.util.TextSecurePreferences;
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import org.thoughtcrime.securesms.util.ViewUtil;
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import org.whispersystems.signalservice.api.SignalServiceAccountManager;
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import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
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import java.io.IOException;
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import java.util.List;
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@ -38,7 +38,7 @@ import java.util.Locale;
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import javax.inject.Inject;
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public class DeviceListFragment extends ListFragment
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implements LoaderManager.LoaderCallbacks<List<DeviceInfo>>,
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implements LoaderManager.LoaderCallbacks<List<Device>>,
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ListView.OnItemClickListener, InjectableType, Button.OnClickListener
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{
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@ -89,7 +89,7 @@ public class DeviceListFragment extends ListFragment
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}
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@Override
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public Loader<List<DeviceInfo>> onCreateLoader(int id, Bundle args) {
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public Loader<List<Device>> onCreateLoader(int id, Bundle args) {
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empty.setVisibility(View.GONE);
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progressContainer.setVisibility(View.VISIBLE);
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@ -97,7 +97,7 @@ public class DeviceListFragment extends ListFragment
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}
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@Override
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public void onLoadFinished(Loader<List<DeviceInfo>> loader, List<DeviceInfo> data) {
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public void onLoadFinished(Loader<List<Device>> loader, List<Device> data) {
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progressContainer.setVisibility(View.GONE);
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if (data == null) {
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@ -116,7 +116,7 @@ public class DeviceListFragment extends ListFragment
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}
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@Override
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public void onLoaderReset(Loader<List<DeviceInfo>> loader) {
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public void onLoaderReset(Loader<List<Device>> loader) {
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setListAdapter(null);
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}
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@ -198,12 +198,12 @@ public class DeviceListFragment extends ListFragment
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if (addDeviceButtonListener != null) addDeviceButtonListener.onClick(v);
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}
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private static class DeviceListAdapter extends ArrayAdapter<DeviceInfo> {
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private static class DeviceListAdapter extends ArrayAdapter<Device> {
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private final int resource;
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private final Locale locale;
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public DeviceListAdapter(Context context, int resource, List<DeviceInfo> objects, Locale locale) {
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public DeviceListAdapter(Context context, int resource, List<Device> objects, Locale locale) {
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super(context, resource, objects);
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this.resource = resource;
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this.locale = locale;
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@ -6,8 +6,8 @@ import android.util.AttributeSet;
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import android.widget.LinearLayout;
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import android.widget.TextView;
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import org.thoughtcrime.securesms.devicelist.Device;
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import org.thoughtcrime.securesms.util.DateUtils;
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import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
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import java.util.Locale;
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@ -34,7 +34,7 @@ public class DeviceListItem extends LinearLayout {
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this.lastActive = (TextView) findViewById(R.id.active);
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}
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public void set(DeviceInfo deviceInfo, Locale locale) {
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public void set(Device deviceInfo, Locale locale) {
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if (TextUtils.isEmpty(deviceInfo.getName())) this.name.setText(R.string.DeviceListItem_unnamed_device);
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else this.name.setText(deviceInfo.getName());
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@ -1,20 +1,40 @@
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package org.thoughtcrime.securesms.database.loaders;
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import android.content.Context;
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import android.support.annotation.NonNull;
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import com.annimon.stream.Stream;
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import org.thoughtcrime.securesms.crypto.IdentityKeyUtil;
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import org.thoughtcrime.securesms.devicelist.Device;
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import org.thoughtcrime.securesms.logging.Log;
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import org.thoughtcrime.securesms.util.AsyncLoader;
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import org.thoughtcrime.securesms.util.Base64;
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import org.whispersystems.libsignal.InvalidKeyException;
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import org.whispersystems.libsignal.ecc.Curve;
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import org.whispersystems.libsignal.ecc.ECPrivateKey;
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import org.whispersystems.libsignal.ecc.ECPublicKey;
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import org.whispersystems.libsignal.util.ByteUtil;
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import org.whispersystems.signalservice.api.SignalServiceAccountManager;
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import org.whispersystems.signalservice.api.messages.multidevice.DeviceInfo;
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import org.whispersystems.signalservice.api.push.SignalServiceAddress;
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import java.io.IOException;
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import java.security.GeneralSecurityException;
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import java.security.MessageDigest;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.Comparator;
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import java.util.Iterator;
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import java.util.List;
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public class DeviceListLoader extends AsyncLoader<List<DeviceInfo>> {
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import javax.crypto.Cipher;
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import javax.crypto.Mac;
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import javax.crypto.spec.IvParameterSpec;
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import javax.crypto.spec.SecretKeySpec;
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import static org.thoughtcrime.securesms.devicelist.DeviceNameProtos.*;
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public class DeviceListLoader extends AsyncLoader<List<Device>> {
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private static final String TAG = DeviceListLoader.class.getSimpleName();
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@ -26,18 +46,14 @@ public class DeviceListLoader extends AsyncLoader<List<DeviceInfo>> {
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}
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@Override
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public List<DeviceInfo> loadInBackground() {
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public List<Device> loadInBackground() {
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try {
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List<DeviceInfo> devices = accountManager.getDevices();
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Iterator<DeviceInfo> iterator = devices.iterator();
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List<Device> devices = Stream.of(accountManager.getDevices())
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.filter(d -> d.getId() != SignalServiceAddress.DEFAULT_DEVICE_ID)
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.map(this::mapToDevice)
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.toList();
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while (iterator.hasNext()) {
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if ((iterator.next().getId() == SignalServiceAddress.DEFAULT_DEVICE_ID)) {
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iterator.remove();
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}
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}
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Collections.sort(devices, new DeviceInfoComparator());
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Collections.sort(devices, new DeviceComparator());
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return devices;
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} catch (IOException e) {
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@ -46,10 +62,57 @@ public class DeviceListLoader extends AsyncLoader<List<DeviceInfo>> {
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}
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}
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private static class DeviceInfoComparator implements Comparator<DeviceInfo> {
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private Device mapToDevice(@NonNull DeviceInfo deviceInfo) {
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try {
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DeviceName deviceName = DeviceName.parseFrom(Base64.decode(deviceInfo.getName()));
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if (!deviceName.hasCiphertext() || !deviceName.hasEphemeralPublic() || !deviceName.hasSyntheticIv()) {
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throw new IOException("Got a DeviceName that wasn't properly populated.");
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}
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byte[] syntheticIv = deviceName.getSyntheticIv().toByteArray();
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byte[] cipherText = deviceName.getCiphertext().toByteArray();
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ECPrivateKey identityKey = IdentityKeyUtil.getIdentityKeyPair(getContext()).getPrivateKey();
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ECPublicKey ephemeralPublic = Curve.decodePoint(deviceName.getEphemeralPublic().toByteArray(), 0);
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byte[] masterSecret = Curve.calculateAgreement(ephemeralPublic, identityKey);
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Mac mac = Mac.getInstance("HmacSHA256");
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mac.init(new SecretKeySpec(masterSecret, "HmacSHA256"));
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byte[] cipherKeyPart1 = mac.doFinal("cipher".getBytes());
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mac.init(new SecretKeySpec(cipherKeyPart1, "HmacSHA256"));
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byte[] cipherKey = mac.doFinal(syntheticIv);
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Cipher cipher = Cipher.getInstance("AES/CTR/NoPadding");
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cipher.init(Cipher.DECRYPT_MODE, new SecretKeySpec(cipherKey, "AES"), new IvParameterSpec(new byte[16]));
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final byte[] plaintext = cipher.doFinal(cipherText);
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mac.init(new SecretKeySpec(masterSecret, "HmacSHA256"));
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byte[] verificationPart1 = mac.doFinal("auth".getBytes());
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mac.init(new SecretKeySpec(verificationPart1, "HmacSHA256"));
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byte[] verificationPart2 = mac.doFinal(plaintext);
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byte[] ourSyntheticIv = ByteUtil.trim(verificationPart2, 16);
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if (!MessageDigest.isEqual(ourSyntheticIv, syntheticIv)) {
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throw new GeneralSecurityException("The computed syntheticIv didn't match the actual syntheticIv.");
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}
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return new Device(deviceInfo.getId(), new String(plaintext), deviceInfo.getCreated(), deviceInfo.getLastSeen());
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} catch (IOException e) {
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Log.w(TAG, "Failed while reading the protobuf.", e);
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} catch (GeneralSecurityException | InvalidKeyException e) {
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Log.w(TAG, "Failed during decryption.", e);
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}
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return new Device(deviceInfo.getId(), deviceInfo.getName(), deviceInfo.getCreated(), deviceInfo.getLastSeen());
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}
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private static class DeviceComparator implements Comparator<Device> {
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@Override
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public int compare(DeviceInfo lhs, DeviceInfo rhs) {
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public int compare(Device lhs, Device rhs) {
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if (lhs.getCreated() < rhs.getCreated()) return -1;
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else if (lhs.getCreated() != rhs.getCreated()) return 1;
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else return 0;
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@ -0,0 +1,32 @@
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package org.thoughtcrime.securesms.devicelist;
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public class Device {
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private final long id;
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private final String name;
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private final long created;
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private final long lastSeen;
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public Device(long id, String name, long created, long lastSeen) {
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this.id = id;
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this.name = name;
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this.created = created;
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this.lastSeen = lastSeen;
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}
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public long getId() {
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return id;
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}
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public String getName() {
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return name;
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}
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public long getCreated() {
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return created;
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}
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public long getLastSeen() {
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return lastSeen;
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}
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}
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@ -0,0 +1,619 @@
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// Generated by the protocol buffer compiler. DO NOT EDIT!
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// source: DeviceName.proto
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package org.thoughtcrime.securesms.devicelist;
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public final class DeviceNameProtos {
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private DeviceNameProtos() {}
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public static void registerAllExtensions(
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com.google.protobuf.ExtensionRegistry registry) {
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}
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public interface DeviceNameOrBuilder
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extends com.google.protobuf.MessageOrBuilder {
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// optional bytes ephemeralPublic = 1;
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/**
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* <code>optional bytes ephemeralPublic = 1;</code>
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*/
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boolean hasEphemeralPublic();
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/**
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* <code>optional bytes ephemeralPublic = 1;</code>
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*/
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com.google.protobuf.ByteString getEphemeralPublic();
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// optional bytes syntheticIv = 2;
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/**
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* <code>optional bytes syntheticIv = 2;</code>
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*/
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boolean hasSyntheticIv();
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/**
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* <code>optional bytes syntheticIv = 2;</code>
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*/
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com.google.protobuf.ByteString getSyntheticIv();
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// optional bytes ciphertext = 3;
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/**
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* <code>optional bytes ciphertext = 3;</code>
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*/
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boolean hasCiphertext();
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/**
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* <code>optional bytes ciphertext = 3;</code>
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*/
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com.google.protobuf.ByteString getCiphertext();
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}
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/**
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* Protobuf type {@code signalservice.DeviceName}
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*/
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public static final class DeviceName extends
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com.google.protobuf.GeneratedMessage
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implements DeviceNameOrBuilder {
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// Use DeviceName.newBuilder() to construct.
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private DeviceName(com.google.protobuf.GeneratedMessage.Builder<?> builder) {
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super(builder);
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this.unknownFields = builder.getUnknownFields();
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}
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private DeviceName(boolean noInit) { this.unknownFields = com.google.protobuf.UnknownFieldSet.getDefaultInstance(); }
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private static final DeviceName defaultInstance;
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public static DeviceName getDefaultInstance() {
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return defaultInstance;
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}
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public DeviceName getDefaultInstanceForType() {
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return defaultInstance;
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}
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private final com.google.protobuf.UnknownFieldSet unknownFields;
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@java.lang.Override
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public final com.google.protobuf.UnknownFieldSet
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getUnknownFields() {
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return this.unknownFields;
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}
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private DeviceName(
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com.google.protobuf.CodedInputStream input,
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com.google.protobuf.ExtensionRegistryLite extensionRegistry)
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throws com.google.protobuf.InvalidProtocolBufferException {
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initFields();
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int mutable_bitField0_ = 0;
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com.google.protobuf.UnknownFieldSet.Builder unknownFields =
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com.google.protobuf.UnknownFieldSet.newBuilder();
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try {
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boolean done = false;
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while (!done) {
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int tag = input.readTag();
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switch (tag) {
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case 0:
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done = true;
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break;
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default: {
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if (!parseUnknownField(input, unknownFields,
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extensionRegistry, tag)) {
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done = true;
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}
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break;
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}
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case 10: {
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bitField0_ |= 0x00000001;
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ephemeralPublic_ = input.readBytes();
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break;
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}
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case 18: {
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bitField0_ |= 0x00000002;
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syntheticIv_ = input.readBytes();
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break;
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}
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case 26: {
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bitField0_ |= 0x00000004;
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ciphertext_ = input.readBytes();
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break;
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}
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}
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}
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} catch (com.google.protobuf.InvalidProtocolBufferException e) {
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throw e.setUnfinishedMessage(this);
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} catch (java.io.IOException e) {
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throw new com.google.protobuf.InvalidProtocolBufferException(
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e.getMessage()).setUnfinishedMessage(this);
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} finally {
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this.unknownFields = unknownFields.build();
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makeExtensionsImmutable();
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}
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}
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public static final com.google.protobuf.Descriptors.Descriptor
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getDescriptor() {
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return org.thoughtcrime.securesms.devicelist.DeviceNameProtos.internal_static_signalservice_DeviceName_descriptor;
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}
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protected com.google.protobuf.GeneratedMessage.FieldAccessorTable
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internalGetFieldAccessorTable() {
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return org.thoughtcrime.securesms.devicelist.DeviceNameProtos.internal_static_signalservice_DeviceName_fieldAccessorTable
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.ensureFieldAccessorsInitialized(
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org.thoughtcrime.securesms.devicelist.DeviceNameProtos.DeviceName.class, org.thoughtcrime.securesms.devicelist.DeviceNameProtos.DeviceName.Builder.class);
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}
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public static com.google.protobuf.Parser<DeviceName> PARSER =
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new com.google.protobuf.AbstractParser<DeviceName>() {
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public DeviceName parsePartialFrom(
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com.google.protobuf.CodedInputStream input,
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com.google.protobuf.ExtensionRegistryLite extensionRegistry)
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throws com.google.protobuf.InvalidProtocolBufferException {
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return new DeviceName(input, extensionRegistry);
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}
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};
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@java.lang.Override
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public com.google.protobuf.Parser<DeviceName> getParserForType() {
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return PARSER;
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}
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private int bitField0_;
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// optional bytes ephemeralPublic = 1;
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public static final int EPHEMERALPUBLIC_FIELD_NUMBER = 1;
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private com.google.protobuf.ByteString ephemeralPublic_;
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/**
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* <code>optional bytes ephemeralPublic = 1;</code>
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*/
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public boolean hasEphemeralPublic() {
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return ((bitField0_ & 0x00000001) == 0x00000001);
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}
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/**
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* <code>optional bytes ephemeralPublic = 1;</code>
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*/
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public com.google.protobuf.ByteString getEphemeralPublic() {
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return ephemeralPublic_;
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}
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// optional bytes syntheticIv = 2;
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public static final int SYNTHETICIV_FIELD_NUMBER = 2;
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private com.google.protobuf.ByteString syntheticIv_;
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/**
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* <code>optional bytes syntheticIv = 2;</code>
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*/
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public boolean hasSyntheticIv() {
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return ((bitField0_ & 0x00000002) == 0x00000002);
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}
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/**
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* <code>optional bytes syntheticIv = 2;</code>
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*/
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public com.google.protobuf.ByteString getSyntheticIv() {
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return syntheticIv_;
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}
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// optional bytes ciphertext = 3;
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public static final int CIPHERTEXT_FIELD_NUMBER = 3;
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private com.google.protobuf.ByteString ciphertext_;
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/**
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* <code>optional bytes ciphertext = 3;</code>
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*/
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public boolean hasCiphertext() {
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return ((bitField0_ & 0x00000004) == 0x00000004);
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}
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/**
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* <code>optional bytes ciphertext = 3;</code>
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*/
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public com.google.protobuf.ByteString getCiphertext() {
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return ciphertext_;
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}
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|
||||
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Loading…
Reference in New Issue