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

Example 26 with Keccak256

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

the class ProofOfWorkRuleTest method mineBlockWithCoinbaseTransactionWithCompressedCoinbaseTransactionPrefix.

private static Block mineBlockWithCoinbaseTransactionWithCompressedCoinbaseTransactionPrefix(Block block, byte[] compressed) {
    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());
    BlockMiner.findNonce(bitcoinMergedMiningBlock, targetBI);
    // We need to clone to allow modifications
    Block newBlock = new Block(block.getEncoded()).cloneBlock();
    newBlock.setBitcoinMergedMiningHeader(bitcoinMergedMiningBlock.cloneAsHeader().bitcoinSerialize());
    co.rsk.bitcoinj.core.PartialMerkleTree bitcoinMergedMiningMerkleBranch = getBitcoinMergedMerkleBranch(bitcoinMergedMiningBlock);
    newBlock.setBitcoinMergedMiningCoinbaseTransaction(org.spongycastle.util.Arrays.concatenate(compressed, blockMergedMiningHash.getBytes()));
    newBlock.setBitcoinMergedMiningMerkleProof(bitcoinMergedMiningMerkleBranch.bitcoinSerialize());
    return newBlock;
}

Example 27 with Keccak256

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

the class TrieImplSnapshotTest method getSnapshotToTrieWithLongValues.

@Test
public void getSnapshotToTrieWithLongValues() {
    TrieStore store = new TrieStoreImpl(new HashMapDB());
    Trie trie = new TrieImpl(store, false);
    trie = trie.put("foo".getBytes(), TrieImplValueTest.makeValue(100));
    Keccak256 hash = trie.getHash();
    trie.save();
    trie = trie.put("bar".getBytes(), TrieImplValueTest.makeValue(200));
    Assert.assertNotNull(trie.get("foo".getBytes()));
    Assert.assertNotNull(trie.get("bar".getBytes()));
    Trie snapshot = trie.getSnapshotTo(hash);
    Assert.assertNotNull(snapshot);
    Assert.assertEquals(hash, snapshot.getHash());
    Assert.assertNotNull(snapshot.get("foo".getBytes()));
    Assert.assertNull(snapshot.get("bar".getBytes()));
}

Example 28 with Keccak256

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

the class TrieImplSnapshotTest method getSnapshotToTrieUsingDeserializedTrie.

@Test
public void getSnapshotToTrieUsingDeserializedTrie() {
    TrieStore store = new TrieStoreImpl(new HashMapDB());
    Trie trie = new TrieImpl(store, false);
    trie = trie.put("foo".getBytes(), "bar".getBytes());
    Keccak256 hash = trie.getHash();
    trie.save();
    trie = trie.put("bar".getBytes(), "foo".getBytes());
    Assert.assertNotNull(trie.get("foo".getBytes()));
    Assert.assertNotNull(trie.get("bar".getBytes()));
    Trie snapshot = TrieImpl.deserialize(trie.serialize()).getSnapshotTo(hash);
    Assert.assertNotNull(snapshot);
    Assert.assertEquals(hash, snapshot.getHash());
    Assert.assertNotNull(snapshot.get("foo".getBytes()));
    Assert.assertNull(snapshot.get("bar".getBytes()));
}

Example 29 with Keccak256

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

the class TrieImplSnapshotTest method getSnapshotToTrieUsingDeserializedTrieWithLongValues.

@Test
public void getSnapshotToTrieUsingDeserializedTrieWithLongValues() {
    byte[] value1 = TrieImplValueTest.makeValue(100);
    byte[] value2 = TrieImplValueTest.makeValue(200);
    TrieStore store = new TrieStoreImpl(new HashMapDB());
    Trie trie = new TrieImpl(store, false);
    trie = trie.put("foo".getBytes(), value1);
    Keccak256 hash = trie.getHash();
    trie.save();
    trie = trie.put("bar".getBytes(), value2);
    Assert.assertNotNull(trie.get("foo".getBytes()));
    Assert.assertArrayEquals(value1, trie.get("foo".getBytes()));
    Assert.assertNotNull(trie.get("bar".getBytes()));
    Assert.assertArrayEquals(value2, trie.get("bar".getBytes()));
    Trie snapshot = TrieImpl.deserialize(trie.serialize()).getSnapshotTo(hash);
    Assert.assertNotNull(snapshot);
    Assert.assertEquals(hash, snapshot.getHash());
    Assert.assertNotNull(snapshot.get("foo".getBytes()));
    Assert.assertArrayEquals(value1, snapshot.get("foo".getBytes()));
    Assert.assertNull(snapshot.get("bar".getBytes()));
}

Example 30 with Keccak256

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

the class TrieImpl method getNodeCount.

/**
 * getNodeCount the number of direct subnodes in this node
 *
 * @return the number of direct subnodes in this node
 *
 * Takes into account that a node could be not present as an object and
 * only be referenced via its unique hash
 */
private int getNodeCount() {
    int count = 0;
    for (int k = 0; k < ARITY; k++) {
        TrieImpl node = this.getNode(k);
        Keccak256 localHash = this.getHash(k);
        if (node != null && !isEmptyTrie(node.value, node.nodes, node.hashes) || localHash != null) {
            count++;
        }
    }
    return count;
}