Coverage Summary for Class: GenesisMerkleProofValidator (co.rsk.validators)

Class Class, % Method, % Line, %
GenesisMerkleProofValidator 0% (0/1) 0% (0/2) 0% (0/10)


1 /* 2  * This file is part of RskJ 3  * Copyright (C) 2018 RSK Labs Ltd. 4  * 5  * This program is free software: you can redistribute it and/or modify 6  * it under the terms of the GNU Lesser General Public License as published by 7  * the Free Software Foundation, either version 3 of the License, or 8  * (at your option) any later version. 9  * 10  * This program is distributed in the hope that it will be useful, 11  * but WITHOUT ANY WARRANTY; without even the implied warranty of 12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 13  * GNU Lesser General Public License for more details. 14  * 15  * You should have received a copy of the GNU Lesser General Public License 16  * along with this program. If not, see <http://www.gnu.org/licenses/>. 17  */ 18 package co.rsk.validators; 19  20 import co.rsk.bitcoinj.core.NetworkParameters; 21 import co.rsk.bitcoinj.core.PartialMerkleTree; 22 import co.rsk.bitcoinj.core.Sha256Hash; 23 import co.rsk.peg.utils.PartialMerkleTreeFormatUtils; 24  25 import java.util.ArrayList; 26 import java.util.List; 27  28 /** 29  * Validates Merkle proofs with the format used since Genesis until RSKIP 92 activation 30  */ 31 public class GenesisMerkleProofValidator implements MerkleProofValidator { 32  33  private final NetworkParameters bitcoinNetworkParameters; 34  private final byte[] pmtSerialized; 35  36  public GenesisMerkleProofValidator(NetworkParameters bitcoinNetworkParameters, byte[] pmtSerialized) { 37  if (!PartialMerkleTreeFormatUtils.hasExpectedSize(pmtSerialized)) { 38  throw new IllegalArgumentException("Partial merkle tree does not have the expected size"); 39  } 40  41  this.bitcoinNetworkParameters = bitcoinNetworkParameters; 42  this.pmtSerialized = pmtSerialized; 43  } 44  45  @Override 46  public boolean isValid(Sha256Hash expectedRoot, Sha256Hash coinbaseHash) { 47  PartialMerkleTree merkleTree = new PartialMerkleTree(bitcoinNetworkParameters, pmtSerialized, 0); 48  List<Sha256Hash> txHashes = new ArrayList<>(); 49  Sha256Hash root = merkleTree.getTxnHashAndMerkleRoot(txHashes); 50  return root.equals(expectedRoot) && 51  txHashes.contains(coinbaseHash); 52  } 53 }