Examples with Keccak256 co.rsk.crypto.Keccak256 used on opensource projects

Example 86 with Keccak256

use of co.rsk.crypto.Keccak256 in project rskj by rsksmart.

the class FamilyUtilsTest method getFamilyGetParent.

@Test
public void getFamilyGetParent() {
    BlockStore store = createBlockStore();
    BlockGenerator blockGenerator = new BlockGenerator();
    Block genesis = blockGenerator.getGenesisBlock();
    Block block1 = blockGenerator.createChildBlock(genesis);
    store.saveBlock(genesis, TEST_DIFFICULTY, true);
    store.saveBlock(block1, TEST_DIFFICULTY, true);
    Set<Keccak256> family = FamilyUtils.getFamily(store, block1, 6);
    Assert.assertNotNull(family);
    Assert.assertFalse(family.isEmpty());
    Assert.assertEquals(1, family.size());
    Assert.assertTrue(family.contains(genesis.getHash()));
}

Example 87 with Keccak256

use of co.rsk.crypto.Keccak256 in project rskj by rsksmart.

the class FamilyUtilsTest method getUncles.

@Test
public void getUncles() {
    BlockStore store = createBlockStore();
    BlockGenerator blockGenerator = new BlockGenerator();
    Block genesis = blockGenerator.getGenesisBlock();
    Block block1 = blockGenerator.createChildBlock(genesis);
    Block uncle11 = blockGenerator.createChildBlock(genesis);
    Block uncle12 = blockGenerator.createChildBlock(genesis);
    Block block2 = blockGenerator.createChildBlock(block1);
    Block uncle21 = blockGenerator.createChildBlock(block1);
    Block uncle22 = blockGenerator.createChildBlock(block1);
    Block block3 = blockGenerator.createChildBlock(block2);
    Block uncle31 = blockGenerator.createChildBlock(block2);
    Block uncle32 = blockGenerator.createChildBlock(block2);
    store.saveBlock(genesis, TEST_DIFFICULTY, true);
    store.saveBlock(block1, TEST_DIFFICULTY, true);
    store.saveBlock(uncle11, TEST_DIFFICULTY, false);
    store.saveBlock(uncle12, TEST_DIFFICULTY, false);
    store.saveBlock(block2, TEST_DIFFICULTY, true);
    store.saveBlock(uncle21, TEST_DIFFICULTY, false);
    store.saveBlock(uncle22, TEST_DIFFICULTY, false);
    store.saveBlock(block3, TEST_DIFFICULTY, true);
    store.saveBlock(uncle31, TEST_DIFFICULTY, false);
    store.saveBlock(uncle32, TEST_DIFFICULTY, false);
    Set<Keccak256> family = FamilyUtils.getUncles(store, block3, 3);
    Assert.assertNotNull(family);
    Assert.assertFalse(family.isEmpty());
    Assert.assertEquals(4, family.size());
    Assert.assertFalse(family.contains(genesis.getHash()));
    Assert.assertFalse(family.contains(block1.getHash()));
    Assert.assertTrue(family.contains(uncle11.getHash()));
    Assert.assertTrue(family.contains(uncle12.getHash()));
    Assert.assertFalse(family.contains(block2.getHash()));
    Assert.assertTrue(family.contains(uncle21.getHash()));
    Assert.assertTrue(family.contains(uncle22.getHash()));
    Assert.assertFalse(family.contains(block3.getHash()));
    Assert.assertFalse(family.contains(uncle31.getHash()));
    Assert.assertFalse(family.contains(uncle32.getHash()));
}

Example 88 with Keccak256

use of co.rsk.crypto.Keccak256 in project rskj by rsksmart.

the class BlockMiner method mineBlock.

public static Block mineBlock(Block block) {
    Keccak256 blockMergedMiningHash = new Keccak256(block.getHashForMergedMining());
    co.rsk.bitcoinj.core.NetworkParameters bitcoinNetworkParameters = co.rsk.bitcoinj.params.RegTestParams.get();
    co.rsk.bitcoinj.core.BtcTransaction bitcoinMergedMiningCoinbaseTransaction = MinerUtils.getBitcoinMergedMiningCoinbaseTransaction(bitcoinNetworkParameters, blockMergedMiningHash.getBytes());
    co.rsk.bitcoinj.core.BtcBlock bitcoinMergedMiningBlock = MinerUtils.getBitcoinMergedMiningBlock(bitcoinNetworkParameters, bitcoinMergedMiningCoinbaseTransaction);
    BigInteger targetBI = DifficultyUtils.difficultyToTarget(block.getDifficulty());
    findNonce(bitcoinMergedMiningBlock, targetBI);
    // We need to clone to allow modifications
    Block newBlock = new Block(block.getEncoded()).cloneBlock();
    newBlock.setBitcoinMergedMiningHeader(bitcoinMergedMiningBlock.cloneAsHeader().bitcoinSerialize());
    bitcoinMergedMiningCoinbaseTransaction = bitcoinMergedMiningBlock.getTransactions().get(0);
    co.rsk.bitcoinj.core.PartialMerkleTree bitcoinMergedMiningMerkleBranch = getBitcoinMergedMerkleBranch(bitcoinMergedMiningBlock);
    newBlock.setBitcoinMergedMiningCoinbaseTransaction(compressCoinbase(bitcoinMergedMiningCoinbaseTransaction.bitcoinSerialize()));
    newBlock.setBitcoinMergedMiningMerkleProof(bitcoinMergedMiningMerkleBranch.bitcoinSerialize());
    return newBlock;
}

Example 89 with Keccak256

use of co.rsk.crypto.Keccak256 in project rskj by rsksmart.

the class BlockTest method checkTxTrieShouldBeEqualForHeaderAndBody.

@Test
public void checkTxTrieShouldBeEqualForHeaderAndBody() {
    Block block = new BlockGenerator().createBlock(10, 5);
    Keccak256 trieHash = new Keccak256(block.getTxTrieRoot());
    Keccak256 trieListHash = Block.getTxTrie(block.getTransactionsList()).getHash();
    Assert.assertEquals(trieHash, trieListHash);
}

Example 90 with Keccak256

use of co.rsk.crypto.Keccak256 in project rskj by rsksmart.

the class Web3Impl method eth_getTransactionByHash.

@Override
public TransactionResultDTO eth_getTransactionByHash(String transactionHash) throws Exception {
    TransactionResultDTO s = null;
    try {
        Keccak256 txHash = new Keccak256(stringHexToByteArray(transactionHash));
        Block block = null;
        TransactionInfo txInfo = blockchain.getTransactionInfo(txHash.getBytes());
        if (txInfo == null) {
            List<Transaction> txs = this.getTransactionsByJsonBlockId("pending");
            for (Transaction tx : txs) {
                if (tx.getHash().equals(txHash)) {
                    return s = new TransactionResultDTO(null, null, tx);
                }
            }
        } else {
            block = blockchain.getBlockByHash(txInfo.getBlockHash());
            // need to return txes only from main chain
            Block mainBlock = blockchain.getBlockByNumber(block.getNumber());
            if (!block.getHash().equals(mainBlock.getHash())) {
                return null;
            }
            txInfo.setTransaction(block.getTransactionsList().get(txInfo.getIndex()));
        }
        if (txInfo == null) {
            return null;
        }
        return s = new TransactionResultDTO(block, txInfo.getIndex(), txInfo.getReceipt().getTransaction());
    } finally {
        logger.debug("eth_getTransactionByHash({}): {}", transactionHash, s);
    }
}