Android Open Source - bitfynd-wallet-android Decode Private Key Task

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License

The source code is released under:

GNU General Public License

Java Source Code

/*
 * Copyright 2014 the original author or authors.
 */*from w ww. j  av  a 2  s .  c  o  m*/
 * This program 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.
 *
 * This program 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 this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package de.schildbach.wallet.ui.send;

import javax.annotation.Nonnull;

import org.bitcoinj.core.ECKey;
import org.bitcoinj.crypto.BIP38PrivateKey;

import android.os.Handler;
import android.os.Looper;

/**
 * @author Andreas Schildbach
 */
public abstract class DecodePrivateKeyTask
{
    private final Handler backgroundHandler;
    private final Handler callbackHandler;

    public DecodePrivateKeyTask(@Nonnull final Handler backgroundHandler)
    {
        this.backgroundHandler = backgroundHandler;
        this.callbackHandler = new Handler(Looper.myLooper());
    }

    public final void decodePrivateKey(@Nonnull final BIP38PrivateKey encryptedKey, @Nonnull final String passphrase)
    {
        backgroundHandler.post(new Runnable()
        {
            @Override
            public void run()
            {
                try
                {
                    final ECKey decryptedKey = encryptedKey.decrypt(passphrase); // takes time

                    callbackHandler.post(new Runnable()
                    {
                        @Override
                        public void run()
                        {
                            onSuccess(decryptedKey);
                        }
                    });
                }
                catch (final BIP38PrivateKey.BadPassphraseException x)
                {
                    callbackHandler.post(new Runnable()
                    {
                        @Override
                        public void run()
                        {
                            onBadPassphrase();
                        }
                    });
                }
            }
        });
    }

    protected abstract void onSuccess(@Nonnull ECKey decryptedKey);

    protected abstract void onBadPassphrase();
}

Java Source Code List

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