Java KeyChain类代码示例

import org.bitcoinj.wallet.KeyChain; //导入依赖的package包/类
@Test
public void derive() throws Exception {
    ECKey key1 = chain.getKey(KeyChain.KeyPurpose.RECEIVE_FUNDS);
    ECKey key2 = chain.getKey(KeyChain.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(KeyChain.KeyPurpose.CHANGE);
    assertEquals("mqumHgVDqNzuXNrszBmi7A2UpmwaPMx4HQ", key3.toAddress(UnitTestParams.get()).toString());
    key3.sign(Sha256Hash.ZERO_HASH);
}
 

import org.bitcoinj.wallet.KeyChain; //导入依赖的package包/类
@Test
public void testRoundTripMarriedWallet() throws Exception {
    // create 2-of-2 married wallet
    myWallet = new Wallet(PARAMS);
    final DeterministicKeyChain partnerChain = new DeterministicKeyChain(new SecureRandom());
    DeterministicKey partnerKey = DeterministicKey.deserializeB58(null, partnerChain.getWatchingKey().serializePubB58(PARAMS), PARAMS);
    MarriedKeyChain chain = MarriedKeyChain.builder()
            .random(new SecureRandom())
            .followingKeys(partnerKey)
            .threshold(2).build();
    myWallet.addAndActivateHDChain(chain);

    myAddress = myWallet.currentAddress(KeyChain.KeyPurpose.RECEIVE_FUNDS);

    Wallet wallet1 = roundTrip(myWallet);
    assertEquals(0, wallet1.getTransactions(true).size());
    assertEquals(Coin.ZERO, wallet1.getBalance());
    assertEquals(2, wallet1.getActiveKeyChain().getSigsRequiredToSpend());
    assertEquals(myAddress, wallet1.currentAddress(KeyChain.KeyPurpose.RECEIVE_FUNDS));
}
 

import org.bitcoinj.wallet.KeyChain; //导入依赖的package包/类
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);
}
 

import org.bitcoinj.wallet.KeyChain; //导入依赖的package包/类
@Test
public void issuedKeys() throws Bip44KeyLookAheadExceededException {
    List<BitAddress> issuedAddresses = new ArrayList<>();
    assertEquals(0, pocket.getIssuedReceiveAddresses().size());
    assertEquals(0, pocket.keys.getNumIssuedExternalKeys());

    issuedAddresses.add(0, pocket.currentAddress(KeyChain.KeyPurpose.RECEIVE_FUNDS));
    BitAddress freshAddress = pocket.getFreshReceiveAddress();
    assertEquals(freshAddress, pocket.currentAddress(KeyChain.KeyPurpose.RECEIVE_FUNDS));
    assertEquals(1, pocket.getIssuedReceiveAddresses().size());
    assertEquals(1, pocket.keys.getNumIssuedExternalKeys());
    assertEquals(issuedAddresses, pocket.getIssuedReceiveAddresses());

    issuedAddresses.add(0, pocket.currentAddress(KeyChain.KeyPurpose.RECEIVE_FUNDS));
    freshAddress = pocket.getFreshReceiveAddress();
    assertEquals(freshAddress, pocket.currentAddress(KeyChain.KeyPurpose.RECEIVE_FUNDS));
    assertEquals(2, pocket.getIssuedReceiveAddresses().size());
    assertEquals(2, pocket.keys.getNumIssuedExternalKeys());
    assertEquals(issuedAddresses, pocket.getIssuedReceiveAddresses());
}
 

import org.bitcoinj.wallet.KeyChain; //导入依赖的package包/类
@Test
public void bloom1() {
    DeterministicKey key2 = chain.getKey(KeyChain.KeyPurpose.RECEIVE_FUNDS);
    DeterministicKey key1 = chain.getKey(KeyChain.KeyPurpose.RECEIVE_FUNDS);

    int numEntries =
            (((chain.getLookaheadSize() + chain.getLookaheadThreshold()) * 2)   // * 2 because of internal/external
          + chain.numLeafKeysIssued()
          + 4  // one root key + one account key + two chain keys (internal/external)
            ) * 2;  // because the filter contains keys and key hashes.
    assertEquals(numEntries, chain.numBloomFilterEntries());
    BloomFilter filter = chain.getFilter(numEntries, 0.001, 1);
    assertTrue(filter.contains(key1.getPubKey()));
    assertTrue(filter.contains(key1.getPubKeyHash()));
    assertTrue(filter.contains(key2.getPubKey()));
    assertTrue(filter.contains(key2.getPubKeyHash()));

    // The lookahead zone is tested in bloom2 and via KeyChainGroupTest.bloom
}
 

import org.bitcoinj.wallet.KeyChain; //导入依赖的package包/类
@Test
public void testRoundTripMarriedWallet() throws Exception {
    // create 2-of-2 married wallet
    myWallet = new Wallet(params);
    final DeterministicKeyChain keyChain = new DeterministicKeyChain(new SecureRandom());
    DeterministicKey partnerKey = DeterministicKey.deserializeB58(null, keyChain.getWatchingKey().serializePubB58());

    myWallet.addFollowingAccountKeys(ImmutableList.of(partnerKey), 2);
    myAddress = myWallet.currentAddress(KeyChain.KeyPurpose.RECEIVE_FUNDS);

    Wallet wallet1 = roundTrip(myWallet);
    assertEquals(0, wallet1.getTransactions(true).size());
    assertEquals(Coin.ZERO, wallet1.getBalance());
    assertEquals(2, wallet1.getSigsRequiredToSpend());
    assertEquals(myAddress, wallet1.currentAddress(KeyChain.KeyPurpose.RECEIVE_FUNDS));
}
 

import org.bitcoinj.wallet.KeyChain; //导入依赖的package包/类
@Test
public void testRoundTripMarriedWallet() throws Exception {
    // create 2-of-2 married wallet
    myWallet = new Wallet(params);
    final DeterministicKeyChain partnerChain = new DeterministicKeyChain(new SecureRandom());
    DeterministicKey partnerKey = DeterministicKey.deserializeB58(null, partnerChain.getWatchingKey().serializePubB58(params), params);
    MarriedKeyChain chain = MarriedKeyChain.builder()
            .random(new SecureRandom())
            .followingKeys(partnerKey)
            .threshold(2).build();
    myWallet.addAndActivateHDChain(chain);

    myAddress = myWallet.currentAddress(KeyChain.KeyPurpose.RECEIVE_FUNDS);

    Wallet wallet1 = roundTrip(myWallet);
    assertEquals(0, wallet1.getTransactions(true).size());
    assertEquals(Coin.ZERO, wallet1.getBalance());
    assertEquals(2, wallet1.getActiveKeychain().getSigsRequiredToSpend());
    assertEquals(myAddress, wallet1.currentAddress(KeyChain.KeyPurpose.RECEIVE_FUNDS));
}
 

import org.bitcoinj.wallet.KeyChain; //导入依赖的package包/类
private ECKey deriveKeyFromWallet(final Wallet wallet, final int iteration, final KeyChain.KeyPurpose keyPurpose) throws UnreadableWalletException, IOException {
    DeterministicKey key = null;
    for (int i = 0; i <= iteration; i++) {
        key = wallet.freshKey(keyPurpose);
    }

    if (key == null) {
        throw new IOException("Unable to derive key");
    }

    return ECKey.fromPrivate(key.getPrivKey());
}
 

import org.bitcoinj.wallet.KeyChain; //导入依赖的package包/类
@Test
public void getKey() {
    ECKey key1 = chain.getKey(KeyChain.KeyPurpose.RECEIVE_FUNDS);
    assertTrue(onKeysAddedRan.getAndSet(false));
    assertEquals(key1, onKeysAdded.getAndSet(null).get(0));
    ECKey key2 = chain.getKey(KeyChain.KeyPurpose.CHANGE);
    assertFalse(onKeysAddedRan.getAndSet(false));
    assertEquals(key2, key1);
}
 

import org.bitcoinj.wallet.KeyChain; //导入依赖的package包/类
@Test(expected = KeyCrypterException.class)
public void cannotImportEncryptedKey() {
    final ECKey key1 = new ECKey();
    chain.importKeys(ImmutableList.of(key1));
    chain = chain.toEncrypted("foobar");
    ECKey encryptedKey = chain.getKey(KeyChain.KeyPurpose.RECEIVE_FUNDS);
    assertTrue(encryptedKey.isEncrypted());

    BasicKeyChain chain2 = new BasicKeyChain();
    chain2.importKeys(ImmutableList.of(encryptedKey));
}
 

import org.bitcoinj.wallet.KeyChain; //导入依赖的package包/类
@Test
public void getLastIssuedKey() {
    assertNull(chain.getLastIssuedKey(KeyChain.KeyPurpose.RECEIVE_FUNDS));
    assertNull(chain.getLastIssuedKey(KeyChain.KeyPurpose.CHANGE));
    DeterministicKey extKey = chain.getKey(KeyChain.KeyPurpose.RECEIVE_FUNDS);
    DeterministicKey intKey = chain.getKey(KeyChain.KeyPurpose.CHANGE);
    assertEquals(extKey, chain.getLastIssuedKey(KeyChain.KeyPurpose.RECEIVE_FUNDS));
    assertEquals(intKey, chain.getLastIssuedKey(KeyChain.KeyPurpose.CHANGE));
}
 

import org.bitcoinj.wallet.KeyChain; //导入依赖的package包/类
public void serializeUnencrypted(SimpleHDKeyChain keyChain, String expectedSerialization) throws UnreadableWalletException {
    keyChain.setLookaheadSize(10);

    keyChain.maybeLookAhead();
    DeterministicKey key1 = keyChain.getKey(KeyChain.KeyPurpose.RECEIVE_FUNDS);
    DeterministicKey key2 = keyChain.getKey(KeyChain.KeyPurpose.RECEIVE_FUNDS);
    DeterministicKey key3 = keyChain.getKey(KeyChain.KeyPurpose.CHANGE);
    List<Protos.Key> keys = keyChain.toProtobuf();
    // 1 master key, 1 account key, 2 internal keys, 3 derived, 20 lookahead and 5 lookahead threshold.
    int numItems =
                      1  // master key/account key
                    + 2  // ext/int parent keys
                    + (keyChain.getLookaheadSize() + keyChain.getLookaheadThreshold()) * 2   // lookahead zone on each chain
            ;
    assertEquals(numItems, keys.size());

    // Get another key that will be lost during round-tripping, to ensure we can derive it again.
    DeterministicKey key4 = keyChain.getKey(KeyChain.KeyPurpose.CHANGE);

    String sb = protoToString(keys);
    assertEquals(expectedSerialization, sb);

    // Round trip the data back and forth to check it is preserved.
    int oldLookaheadSize = keyChain.getLookaheadSize();
    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);
    key2.sign(Sha256Hash.ZERO_HASH);
    key3.sign(Sha256Hash.ZERO_HASH);
    key4.sign(Sha256Hash.ZERO_HASH);
    assertEquals(oldLookaheadSize, keyChain.getLookaheadSize());
}
 

import org.bitcoinj.wallet.KeyChain; //导入依赖的package包/类
private void checkEncryptedKeyChain(SimpleHDKeyChain encChain, DeterministicKey key1) {
    // Check we can look keys up and extend the chain without the AES key being provided.
    DeterministicKey encKey1 = encChain.findKeyFromPubKey(key1.getPubKey());
    DeterministicKey encKey2 = encChain.getKey(KeyChain.KeyPurpose.RECEIVE_FUNDS);
    assertFalse(key1.isEncrypted());
    assertTrue(encKey1.isEncrypted());
    assertEquals(encKey1.getPubKeyPoint(), key1.getPubKeyPoint());
    final KeyParameter aesKey = checkNotNull(encChain.getKeyCrypter()).deriveKey("open secret");
    encKey1.sign(Sha256Hash.ZERO_HASH, aesKey);
    encKey2.sign(Sha256Hash.ZERO_HASH, aesKey);
    assertTrue(encChain.checkAESKey(aesKey));
    assertFalse(encChain.checkPassword("access denied"));
    assertTrue(encChain.checkPassword("open secret"));
}
 

import org.bitcoinj.wallet.KeyChain; //导入依赖的package包/类
@Test
public void testSingleAddressWallet() throws Exception {
    ECKey key = pocket.keys.getCurrentUnusedKey(KeyChain.KeyPurpose.RECEIVE_FUNDS);
    BitWalletSingleKey bitWalletSingleKey = new BitWalletSingleKey(DOGE, key);
    bitWalletSingleKey.onConnection(getBlockchainConnection(DOGE));
    assertEquals(DOGE.value("10"), bitWalletSingleKey.getBalance());
}
 

import org.bitcoinj.wallet.KeyChain; //导入依赖的package包/类
@Test
public void getKeys() throws Exception {
    chain.getKey(KeyChain.KeyPurpose.RECEIVE_FUNDS);
    chain.getKey(KeyChain.KeyPurpose.CHANGE);
    chain.maybeLookAhead();
    assertEquals(2, chain.getKeys(false).size());
}