@Override
public DeterministicKeyChain toDecrypted(KeyParameter aesKey) {
checkState(getKeyCrypter() != null, "Key chain not encrypted");
checkState(seed != null, "Can't decrypt a watching chain");
checkState(seed.isEncrypted());
String passphrase = DEFAULT_PASSPHRASE_FOR_MNEMONIC; // FIXME allow non-empty passphrase
DeterministicSeed decSeed = seed.decrypt(getKeyCrypter(), passphrase, aesKey);
DeterministicKeyChain chain = new DeterministicKeyChain(decSeed);
// Now double check that the keys match to catch the case where the key is wrong but padding
// didn't catch it.
if (!chain.getWatchingKey().getPubKeyPoint().equals(getWatchingKey().getPubKeyPoint()))
throw new KeyCrypterException("Provided AES key is wrong");
chain.lookaheadSize = lookaheadSize;
// Now copy the (pubkey only) leaf keys across to avoid rederiving them. The private key bytes
// are missing
// anyway so there's nothing to decrypt.
for (ECKey eckey : basicKeyChain.getKeys()) {
DeterministicKey key = (DeterministicKey) eckey;
if (key.getPath().size() != 3) continue; // Not a leaf key.
checkState(key.isEncrypted());
DeterministicKey parent =
chain.hierarchy.get(checkNotNull(key.getParent()).getPath(), false, false);
// Clone the key to the new decrypted hierarchy.
key = new DeterministicKey(key.getPubOnly(), parent);
chain.hierarchy.putKey(key);
chain.basicKeyChain.importKey(key);
}
chain.issuedExternalKeys = issuedExternalKeys;
chain.issuedInternalKeys = issuedInternalKeys;
return chain;
}
// For internal usage only
/* package */ List<ECKey> getKeys(boolean includeLookahead) {
List<ECKey> keys = basicKeyChain.getKeys();
if (!includeLookahead) {
int treeSize = internalKey.getPath().size();
List<ECKey> issuedKeys = new LinkedList<ECKey>();
for (ECKey key : keys) {
DeterministicKey detkey = (DeterministicKey) key;
DeterministicKey parent = detkey.getParent();
if (parent == null) continue;
if (detkey.getPath().size() <= treeSize) continue;
if (parent.equals(internalKey) && detkey.getChildNumber().i() > issuedInternalKeys)
continue;
if (parent.equals(externalKey) && detkey.getChildNumber().i() > issuedExternalKeys)
continue;
issuedKeys.add(detkey);
}
return issuedKeys;
}
return keys;
}
