/** * Locates a keypair from the basicKeyChain given the hash of the public key. This is needed * when finding out which key we need to use to redeem a transaction output. * * @return ECKey object or null if no such key was found. */ @Nullable @Override public ECKey findKeyFromPubHash(byte[] pubkeyHash) { lock.lock(); try { return keys.findKeyFromPubHash(pubkeyHash); } finally { lock.unlock(); } }
/** * Returns true is it is possible to create new fresh receive addresses, false otherwise */ public boolean canCreateFreshReceiveAddress() { lock.lock(); try { DeterministicKey currentUnusedKey = keys.getCurrentUnusedKey(RECEIVE_FUNDS); int maximumKeyIndex = SimpleHDKeyChain.LOOKAHEAD - 1; // If there are used keys if (!addressesStatus.isEmpty()) { int lastUsedKeyIndex = 0; // Find the last used key index for (Map.Entry<AbstractAddress, String> entry : addressesStatus.entrySet()) { if (entry.getValue() == null) continue; DeterministicKey usedKey = keys.findKeyFromPubHash(getHash160(entry.getKey())); if (usedKey != null && keys.isExternal(usedKey) && usedKey.getChildNumber().num() > lastUsedKeyIndex) { lastUsedKeyIndex = usedKey.getChildNumber().num(); } } maximumKeyIndex = lastUsedKeyIndex + SimpleHDKeyChain.LOOKAHEAD; } log.info("Maximum key index for new key is {}", maximumKeyIndex); // If we exceeded the BIP44 look ahead threshold return currentUnusedKey.getChildNumber().num() < maximumKeyIndex; } finally { lock.unlock(); } }
@Test public void fillTransactions() throws Exception { pocket.onConnection(getBlockchainConnection(DOGE)); checkUnspentOutputs(getDummyUtxoSet(), pocket); assertEquals(11000000000L, pocket.getBalance().value); // Issued keys assertEquals(18, pocket.keys.getNumIssuedExternalKeys()); assertEquals(9, pocket.keys.getNumIssuedInternalKeys()); // No addresses left to subscribe List<AbstractAddress> addressesToWatch = pocket.getAddressesToWatch(); assertEquals(0, addressesToWatch.size()); // 18 external issued + 20 lookahead + 9 external issued + 20 lookahead assertEquals(67, pocket.addressesStatus.size()); assertEquals(67, pocket.addressesSubscribed.size()); BitAddress receiveAddr = pocket.getReceiveAddress(); // This key is not issued assertEquals(18, pocket.keys.getNumIssuedExternalKeys()); assertEquals(67, pocket.addressesStatus.size()); assertEquals(67, pocket.addressesSubscribed.size()); DeterministicKey key = pocket.keys.findKeyFromPubHash(receiveAddr.getHash160()); assertNotNull(key); // 18 here is the key index, not issued keys count assertEquals(18, key.getChildNumber().num()); assertEquals(11000000000L, pocket.getBalance().value); }
keyChain = SimpleHDKeyChain.fromProtobuf(keys, null); assertEquals(expectedSerialization, protoToString(keyChain.toProtobuf())); assertEquals(key1, keyChain.findKeyFromPubHash(key1.getPubKeyHash())); assertEquals(key2, keyChain.findKeyFromPubHash(key2.getPubKeyHash())); assertEquals(key3, keyChain.findKeyFromPubHash(key3.getPubKeyHash())); assertEquals(key4, keyChain.getKey(KeyChain.KeyPurpose.CHANGE)); key1.sign(Sha256Hash.ZERO_HASH);
public void encryption(SimpleHDKeyChain unencChain) throws UnreadableWalletException { DeterministicKey key1 = unencChain.getKey(KeyChain.KeyPurpose.RECEIVE_FUNDS); SimpleHDKeyChain encChain = unencChain.toEncrypted("open secret"); DeterministicKey encKey1 = encChain.findKeyFromPubKey(key1.getPubKey()); checkEncryptedKeyChain(encChain, key1); // Round-trip to ensure de/serialization works and that we can store two chains and they both deserialize. List<Protos.Key> serialized = encChain.toProtobuf(); System.out.println(protoToString(serialized)); encChain = SimpleHDKeyChain.fromProtobuf(serialized, encChain.getKeyCrypter()); checkEncryptedKeyChain(encChain, unencChain.findKeyFromPubKey(key1.getPubKey())); DeterministicKey encKey2 = encChain.getKey(KeyChain.KeyPurpose.RECEIVE_FUNDS); // Decrypt and check the keys match. SimpleHDKeyChain decChain = encChain.toDecrypted("open secret"); DeterministicKey decKey1 = decChain.findKeyFromPubHash(encKey1.getPubKeyHash()); DeterministicKey decKey2 = decChain.findKeyFromPubHash(encKey2.getPubKeyHash()); assertEquals(decKey1.getPubKeyPoint(), encKey1.getPubKeyPoint()); assertEquals(decKey2.getPubKeyPoint(), encKey2.getPubKeyPoint()); assertFalse(decKey1.isEncrypted()); assertFalse(decKey2.isEncrypted()); assertNotEquals(encKey1.getParent(), decKey1.getParent()); // parts of a different hierarchy // Check we can once again derive keys from the decrypted chain. decChain.getKey(KeyChain.KeyPurpose.RECEIVE_FUNDS).sign(Sha256Hash.ZERO_HASH); decChain.getKey(KeyChain.KeyPurpose.CHANGE).sign(Sha256Hash.ZERO_HASH); }
@Test public void derive() throws Exception { ECKey key1 = chain.getKey(SimpleHDKeyChain.KeyPurpose.RECEIVE_FUNDS); ECKey key2 = chain.getKey(SimpleHDKeyChain.KeyPurpose.RECEIVE_FUNDS); final Address address = new Address(UnitTestParams.get(), "n1bQNoEx8uhmCzzA5JPG6sFdtsUQhwiQJV"); assertEquals(address, key1.toAddress(UnitTestParams.get())); assertEquals("mnHUcqUVvrfi5kAaXJDQzBb9HsWs78b42R", key2.toAddress(UnitTestParams.get()).toString()); assertEquals(key1, chain.findKeyFromPubHash(address.getHash160())); assertEquals(key2, chain.findKeyFromPubKey(key2.getPubKey())); key1.sign(Sha256Hash.ZERO_HASH); ECKey key3 = chain.getKey(SimpleHDKeyChain.KeyPurpose.CHANGE); assertEquals("mqumHgVDqNzuXNrszBmi7A2UpmwaPMx4HQ", key3.toAddress(UnitTestParams.get()).toString()); key3.sign(Sha256Hash.ZERO_HASH); }
@Test public void deriveCoin() throws Exception { DeterministicHierarchy hierarchy = new DeterministicHierarchy(masterKey); DeterministicKey rootKey = hierarchy.get(BitcoinMain.get().getBip44Path(0), false, true); chain = new SimpleHDKeyChain(rootKey); ECKey key1 = chain.getKey(SimpleHDKeyChain.KeyPurpose.RECEIVE_FUNDS); ECKey key2 = chain.getKey(SimpleHDKeyChain.KeyPurpose.RECEIVE_FUNDS); final Address address = new Address(BitcoinMain.get(), "1Fp7CA7ZVqZNFVNQ9TpeqWUas7K28K9zig"); assertEquals(address, key1.toAddress(BitcoinMain.get())); assertEquals("1AKqkQM4VqyVis6hscj8695WHPCCzgHNY3", key2.toAddress(BitcoinMain.get()).toString()); assertEquals(key1, chain.findKeyFromPubHash(address.getHash160())); assertEquals(key2, chain.findKeyFromPubKey(key2.getPubKey())); key1.sign(Sha256Hash.ZERO_HASH); ECKey key3 = chain.getKey(SimpleHDKeyChain.KeyPurpose.CHANGE); assertEquals("18YvGiRqXKxrzB72ckfrRSizWeHgwRP94V", key3.toAddress(BitcoinMain.get()).toString()); key3.sign(Sha256Hash.ZERO_HASH); ECKey key4 = chain.getKey(SimpleHDKeyChain.KeyPurpose.CHANGE); assertEquals("1861TX2MbyPEUrxDQVWgV4Tp9991bK1zpy", key4.toAddress(BitcoinMain.get()).toString()); key4.sign(Sha256Hash.ZERO_HASH); }