org.bitcoinj.wallet.KeyChainGroupStructure Maven / Gradle / Ivy
/*
* 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.wallet;
import org.bitcoinj.crypto.ChildNumber;
import org.bitcoinj.script.Script;
import com.google.common.collect.ImmutableList;
/** Defines a structure for hierarchical deterministic wallets. */
public interface KeyChainGroupStructure {
/** Map desired output script type to an account path */
ImmutableList accountPathFor(Script.ScriptType outputScriptType);
/** Default {@link KeyChainGroupStructure} implementation. Based on BIP32 "Wallet structure". */
public static final KeyChainGroupStructure DEFAULT = new KeyChainGroupStructure() {
@Override
public ImmutableList accountPathFor(Script.ScriptType outputScriptType) {
if (outputScriptType == null || outputScriptType == Script.ScriptType.P2PKH)
return DeterministicKeyChain.ACCOUNT_ZERO_PATH;
else if (outputScriptType == Script.ScriptType.P2WPKH)
return DeterministicKeyChain.ACCOUNT_ONE_PATH;
else
throw new IllegalArgumentException(outputScriptType.toString());
}
};
}