@Test
public void orphanBlock() {
// CREATE EMPTY MEMORY DATABASE
DBSet databaseSet = DBSet.createEmptyDatabaseSet();
// PROCESS GENESISBLOCK
GenesisBlock genesisBlock = new GenesisBlock();
genesisBlock.process(databaseSet);
// CREATE KNOWN ACCOUNT
byte[] seed = Crypto.getInstance().digest("test".getBytes());
byte[] privateKey = Crypto.getInstance().createKeyPair(seed).getA();
PrivateKeyAccount generator = new PrivateKeyAccount(privateKey);
// PROCESS GENESIS TRANSACTION TO MAKE SURE GENERATOR HAS FUNDS
Transaction transaction =
new GenesisTransaction(generator, BigDecimal.valueOf(1000).setScale(8), NTP.getTime());
transaction.process(databaseSet);
// GENERATE NEXT BLOCK
BlockGenerator blockGenerator = new BlockGenerator();
Block block = blockGenerator.generateNextBlock(databaseSet, generator, genesisBlock);
// FORK
DBSet fork = databaseSet.fork();
// GENERATE PAYMENT 1
Account recipient = new Account("XUi2oga2pnGNcZ9es6pBqxydtRZKWdkL2g");
long timestamp = block.getTimestamp();
byte[] signature =
PaymentTransaction.generateSignature(
databaseSet,
generator,
recipient,
BigDecimal.valueOf(100).setScale(8),
BigDecimal.valueOf(1).setScale(8),
timestamp);
Transaction payment1 =
new PaymentTransaction(
generator,
recipient,
BigDecimal.valueOf(100).setScale(8),
BigDecimal.valueOf(1).setScale(8),
timestamp,
generator.getLastReference(databaseSet),
signature);
payment1.process(fork);
block.addTransaction(payment1);
// GENERATE PAYMENT 2
Account recipient2 = new Account("XLPYYfxKEiDcybCkFA7jXcxSdePMMoyZLt");
signature =
PaymentTransaction.generateSignature(
fork,
generator,
recipient2,
BigDecimal.valueOf(100).setScale(8),
BigDecimal.valueOf(1).setScale(8),
timestamp);
Transaction payment2 =
new PaymentTransaction(
generator,
recipient2,
BigDecimal.valueOf(100).setScale(8),
BigDecimal.valueOf(1).setScale(8),
timestamp,
generator.getLastReference(fork),
signature);
block.addTransaction(payment2);
// ADD TRANSACTION SIGNATURE
byte[] transactionsSignature = blockGenerator.calculateTransactionsSignature(block, generator);
block.setTransactionsSignature(transactionsSignature);
// CHECK VALID
assertEquals(true, block.isSignatureValid());
assertEquals(true, block.isValid(databaseSet));
// PROCESS BLOCK
block.process(databaseSet);
// ORPHAN BLOCK
block.orphan(databaseSet);
// CHECK BALANCE GENERATOR
assertEquals(
true, generator.getConfirmedBalance(databaseSet).compareTo(BigDecimal.valueOf(1000)) == 0);
// CHECK LAST REFERENCE GENERATOR
assertEquals(
true, Arrays.equals(generator.getLastReference(databaseSet), transaction.getSignature()));
// CHECK BALANCE RECIPIENT
assertEquals(
true, recipient.getConfirmedBalance(databaseSet).compareTo(BigDecimal.valueOf(1000)) == 0);
// CHECK LAST REFERENCE RECIPIENT
assertEquals(
false, Arrays.equals(recipient.getLastReference(databaseSet), payment1.getSignature()));
// CHECK BALANCE RECIPIENT2
assertEquals(
true, recipient2.getConfirmedBalance(databaseSet).compareTo(BigDecimal.valueOf(0)) == 0);
// CHECK LAST REFERENCE RECIPIENT
assertEquals(true, Arrays.equals(recipient2.getLastReference(databaseSet), new byte[0]));
// CHECK LAST BLOCK
assertEquals(
true,
Arrays.equals(
genesisBlock.getSignature(), databaseSet.getBlockMap().getLastBlock().getSignature()));
}
@Test
public void validateSignatureBlock() {
// CREATE EMPTY MEMORY DATABASE
DBSet databaseSet = DBSet.createEmptyDatabaseSet();
// PROCESS GENESISBLOCK
GenesisBlock genesisBlock = new GenesisBlock();
genesisBlock.process(databaseSet);
// CREATE KNOWN ACCOUNT
byte[] seed = Crypto.getInstance().digest("test".getBytes());
byte[] privateKey = Crypto.getInstance().createKeyPair(seed).getA();
PrivateKeyAccount generator = new PrivateKeyAccount(privateKey);
// PROCESS GENESIS TRANSACTION TO MAKE SURE GENERATOR HAS FUNDS
Transaction transaction =
new GenesisTransaction(generator, BigDecimal.valueOf(1000).setScale(8), NTP.getTime());
transaction.process(databaseSet);
// GENERATE NEXT BLOCK
BlockGenerator blockGenerator = new BlockGenerator();
Block newBlock = blockGenerator.generateNextBlock(databaseSet, generator, genesisBlock);
// ADD TRANSACTION SIGNATURE
byte[] transactionsSignature =
Crypto.getInstance().sign(generator, newBlock.getGeneratorSignature());
newBlock.setTransactionsSignature(transactionsSignature);
// CHECK IF SIGNATURE VALID
assertEquals(true, newBlock.isSignatureValid());
// INVALID TRANSACTION SIGNATURE
transactionsSignature = new byte[64];
newBlock.setTransactionsSignature(transactionsSignature);
// CHECK IF SIGNATURE INVALID
assertEquals(false, newBlock.isSignatureValid());
// INVALID GENERATOR SIGNATURE
newBlock =
BlockFactory.getInstance()
.create(
newBlock.getVersion(),
newBlock.getReference(),
newBlock.getTimestamp(),
newBlock.getGeneratingBalance(),
generator,
new byte[32]);
transactionsSignature = Crypto.getInstance().sign(generator, newBlock.getGeneratorSignature());
newBlock.setTransactionsSignature(transactionsSignature);
/// CHECK IF SIGNATURE INVALID
assertEquals(false, newBlock.isSignatureValid());
// VALID TRANSACTION SIGNATURE
newBlock = blockGenerator.generateNextBlock(databaseSet, generator, genesisBlock);
// ADD TRANSACTION
Account recipient = new Account("XUi2oga2pnGNcZ9es6pBqxydtRZKWdkL2g");
long timestamp = newBlock.getTimestamp();
byte[] signature =
PaymentTransaction.generateSignature(
databaseSet,
generator,
recipient,
BigDecimal.valueOf(100).setScale(8),
BigDecimal.valueOf(1).setScale(8),
timestamp);
Transaction payment =
new PaymentTransaction(
generator,
recipient,
BigDecimal.valueOf(100).setScale(8),
BigDecimal.valueOf(1).setScale(8),
timestamp,
generator.getLastReference(databaseSet),
signature);
newBlock.addTransaction(payment);
// ADD TRANSACTION SIGNATURE
transactionsSignature = blockGenerator.calculateTransactionsSignature(newBlock, generator);
newBlock.setTransactionsSignature(transactionsSignature);
// CHECK VALID TRANSACTION SIGNATURE
assertEquals(true, newBlock.isSignatureValid());
// INVALID TRANSACTION SIGNATURE
newBlock = blockGenerator.generateNextBlock(databaseSet, generator, genesisBlock);
// ADD TRANSACTION
payment =
new PaymentTransaction(
generator,
recipient,
BigDecimal.valueOf(200).setScale(8),
BigDecimal.valueOf(1).setScale(8),
timestamp,
generator.getLastReference(databaseSet),
signature);
newBlock.addTransaction(payment);
// ADD TRANSACTION SIGNATURE
transactionsSignature = blockGenerator.calculateTransactionsSignature(newBlock, generator);
newBlock.setTransactionsSignature(transactionsSignature);
// CHECK INVALID TRANSACTION SIGNATURE
assertEquals(false, newBlock.isSignatureValid());
}