c38a8aa699
1) Generate a Curve25519 identity key. 2) Use Curve25519 ephemerals and identities for v2 3DHE agreements. 3) Initiate v2 key exchange messages. 4) Accept v1 key exchange messages. 5) TOFU Curve25519 identities.
127 lines
4.6 KiB
Java
127 lines
4.6 KiB
Java
/*
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* Copyright (C) 2011 Whisper Systems
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* Copyright (C) 2013 Open Whisper Systems
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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package org.thoughtcrime.securesms;
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import android.app.AlertDialog;
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import android.app.ProgressDialog;
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import android.content.DialogInterface;
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import android.os.AsyncTask;
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import android.os.Bundle;
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import android.widget.Toast;
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import com.actionbarsherlock.view.Menu;
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import com.actionbarsherlock.view.MenuInflater;
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import com.actionbarsherlock.view.MenuItem;
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import org.thoughtcrime.securesms.crypto.IdentityKeyUtil;
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import org.whispersystems.textsecure.crypto.MasterSecret;
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import org.whispersystems.textsecure.crypto.ecc.Curve;
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import org.whispersystems.textsecure.crypto.ecc.ECPublicKey;
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/**
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* Activity that displays the local identity key and offers the option to regenerate it.
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*
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* @author Moxie Marlinspike
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*/
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public class ViewLocalIdentityActivity extends ViewIdentityActivity {
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private MasterSecret masterSecret;
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public void onCreate(Bundle bundle) {
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this.masterSecret = getIntent().getParcelableExtra("master_secret");
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getIntent().putExtra("identity_key", IdentityKeyUtil.getIdentityKey(this, Curve.DJB_TYPE));
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getIntent().putExtra("title", getString(R.string.ApplicationPreferencesActivity_my) + " " +
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getString(R.string.ViewIdentityActivity_identity_fingerprint));
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super.onCreate(bundle);
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}
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@Override
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public boolean onPrepareOptionsMenu(Menu menu) {
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super.onPrepareOptionsMenu(menu);
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MenuInflater inflater = this.getSupportMenuInflater();
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inflater.inflate(R.menu.local_identity, menu);
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return true;
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}
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@Override
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public boolean onOptionsItemSelected(MenuItem item) {
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super.onOptionsItemSelected(item);
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switch (item.getItemId()) {
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case R.id.menu_regenerate_key: promptToRegenerateIdentityKey(); return true;
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case android.R.id.home: finish(); return true;
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}
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return false;
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}
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private void promptToRegenerateIdentityKey() {
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AlertDialog.Builder dialog = new AlertDialog.Builder(this);
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dialog.setIcon(android.R.drawable.ic_dialog_alert);
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dialog.setTitle(getString(R.string.ViewLocalIdentityActivity_reset_identity_key));
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dialog.setMessage(getString(R.string.ViewLocalIdentityActivity_by_regenerating_your_identity_key_your_existing_contacts_will_receive_warnings));
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dialog.setNegativeButton(getString(R.string.ViewLocalIdentityActivity_cancel), null);
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dialog.setPositiveButton(getString(R.string.ViewLocalIdentityActivity_continue),
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new DialogInterface.OnClickListener() {
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@Override
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public void onClick(DialogInterface dialog, int which) {
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regenerateIdentityKey();
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}
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});
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dialog.show();
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}
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private void regenerateIdentityKey() {
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new AsyncTask<Void, Void, Void>() {
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private ProgressDialog progressDialog;
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@Override
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protected void onPreExecute() {
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progressDialog = ProgressDialog.show(ViewLocalIdentityActivity.this,
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getString(R.string.ViewLocalIdentityActivity_regenerating),
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getString(R.string.ViewLocalIdentityActivity_regenerating_identity_key),
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true, false);
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}
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@Override
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public Void doInBackground(Void... params) {
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IdentityKeyUtil.generateIdentityKeys(ViewLocalIdentityActivity.this, masterSecret);
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return null;
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}
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@Override
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protected void onPostExecute(Void result) {
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if (progressDialog != null)
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progressDialog.dismiss();
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Toast.makeText(ViewLocalIdentityActivity.this,
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getString(R.string.ViewLocalIdentityActivity_regenerated),
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Toast.LENGTH_LONG).show();
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getIntent().putExtra("identity_key",
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IdentityKeyUtil.getIdentityKey(ViewLocalIdentityActivity.this,
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Curve.DJB_TYPE));
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initialize();
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}
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}.execute();
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}
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}
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