/*
* Copyright by the original author or authors.
*
* 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.
*/
package org.bitcoinj.examples;
import org.bitcoinj.core.NetworkParameters;
import org.bitcoinj.core.Utils;
import org.bitcoinj.params.TestNet3Params;
import org.bitcoinj.wallet.DeterministicSeed;
import org.bitcoinj.wallet.Wallet;
/**
* The following example shows you how to create a deterministic seed from a hierarchical deterministic wallet represented as a mnemonic code.
* This seed can be used to fully restore your wallet. The RestoreFromSeed.java example shows how to load the wallet from this seed.
*
* In Bitcoin Improvement Proposal (BIP) 39 and BIP 32 describe the details about hierarchical deterministic wallets and mnemonic sentences
* https://github.com/bitcoin/bips/blob/master/bip-0039.mediawiki
* https://github.com/bitcoin/bips/blob/master/bip-0032.mediawiki
*/
public class BackupToMnemonicSeed {
public static void main(String[] args) {
NetworkParameters params = TestNet3Params.get();
Wallet wallet = new Wallet(params);
DeterministicSeed seed = wallet.getKeyChainSeed();
System.out.println("seed: " + seed.toString());
System.out.println("creation time: " + seed.getCreationTimeSeconds());
System.out.println("mnemonicCode: " + Utils.join(seed.getMnemonicCode()));
}
}