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/*
* Copyright (C) 2007 Kenny Root (kenny at the-b.org)
*
* This file is part of Connectbot.
*
* Connectbot is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Connectbot is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with Connectbot. If not, see <http://www.gnu.org/licenses/>.
*/
package org.theb.ssh;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.KeyStore;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.SecureRandom;
import java.security.Security;
import java.util.concurrent.Semaphore;
import android.app.Activity;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
public class Pubkey extends Activity {
private static SecureRandom mSecRand = null;
//private static KeyStore mKeyStore = null;
private Thread kgThread = null;
private static final int GATHER_ENTROPY = 0;
protected Semaphore entropyGathered;
protected String entropySeed;
protected Button generateButton;
/** Called when the activity is first created. */
@Override
public void onCreate(Bundle icicle) {
super.onCreate(icicle);
setContentView(R.layout.pubkey);
generateButton = (Button) findViewById(R.id.generate);
generateButton.setOnClickListener(mGenerateListener);
Button okButton = (Button) findViewById(R.id.ok);
okButton.setOnClickListener(mCommitListener);
Button cancelButton = (Button) findViewById(R.id.cancel);
cancelButton.setOnClickListener(mCancelListener);
}
final Runnable mKeyGen = new Runnable() {
public void run() {
// TODO Auto-generated method stub
Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());
try {
mSecRand = SecureRandom.getInstance("SHA1PRNG");
entropyGathered = new Semaphore(0);
gatherEntropy();
entropyGathered.acquire();
mSecRand.setSeed(entropySeed.getBytes());
entropyGathered = null;
KeyPairGenerator keyGen = KeyPairGenerator.getInstance("DSA");
keyGen.initialize(512, mSecRand);
KeyPair pair = keyGen.generateKeyPair();
PrivateKey priv = pair.getPrivate();
PublicKey pub = pair.getPublic();
byte[] encPriv = priv.getEncoded();
byte[] encPub = pub.getEncoded();
Log.e("SSH/priv", new String(encPriv));
Log.d("SSH/pub", new String(encPub));
} catch (Exception ex) {
Log.e("SSH/keygen", ex.getMessage());
}
}
};
OnClickListener mGenerateListener = new OnClickListener() {
public void onClick(View v) {
kgThread = new Thread(mKeyGen);
kgThread.start();
}
};
@Override
protected void onActivityResult(int requestCode, int resultCode,
String data, Bundle extras)
{
if (requestCode == GATHER_ENTROPY) {
entropySeed = data;
entropyGathered.release();
}
}
protected void gatherEntropy() {
generateButton.setEnabled(false);
Intent intent = new Intent(this, TouchEntropy.class);
startSubActivity(intent, GATHER_ENTROPY);
}
OnClickListener mCommitListener = new OnClickListener() {
public void onClick(View v) {
// When the user clicks, just finish this activity.
// onPause will be called, and we save our data there.
finish();
}
};
OnClickListener mCancelListener = new OnClickListener() {
public void onClick(View v) {
//cancelEdit();
finish();
}
};
}
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