/** * Decrypt the keys in the group using the previously given key crypter and the AES key. A good default * KeyCrypter to use is {@link org.bitcoinj.crypto.KeyCrypterScrypt}. * * @throws org.bitcoinj.crypto.KeyCrypterException Thrown if the wallet decryption fails for some reason, leaving the group unchanged. */ @Override public void decrypt(KeyParameter aesKey) { checkNotNull(aesKey); lock.lock(); try { this.keys = this.keys.toDecrypted(aesKey); } finally { lock.unlock(); } }
@Override public SimpleHDKeyChain toDecrypted(CharSequence password) { checkNotNull(password, "Attempt to decrypt with a null password."); checkArgument(password.length() > 0, "Attempt to decrypt with an empty password."); KeyCrypter crypter = getKeyCrypter(); checkState(crypter != null, "Chain not encrypted"); KeyParameter derivedKey = crypter.deriveKey(password); return toDecrypted(derivedKey); }
@Test(expected = IllegalStateException.class) public void notEncrypted() { chain.toDecrypted("fail"); }
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); }