public DeterministicKey encrypt(
KeyCrypter keyCrypter, KeyParameter aesKey, @Nullable DeterministicKey newParent)
throws KeyCrypterException {
// Same as the parent code, except we construct a DeterministicKey instead of an ECKey.
checkNotNull(keyCrypter);
if (newParent != null) checkArgument(newParent.isEncrypted());
final byte[] privKeyBytes = getPrivKeyBytes();
checkState(privKeyBytes != null, "Private key is not available");
EncryptedData encryptedPrivateKey = keyCrypter.encrypt(privKeyBytes, aesKey);
DeterministicKey key =
new DeterministicKey(
childNumberPath, chainCode, keyCrypter, pub, encryptedPrivateKey, newParent);
if (newParent == null) key.setCreationTimeSeconds(getCreationTimeSeconds());
return key;
}
/**
* A deterministic key is considered to be encrypted if it has access to encrypted private key
* bytes, OR if its parent does. The reason is because the parent would be encrypted under the
* same key and this key knows how to rederive its own private key bytes from the parent, if
* needed.
*/
@Override
public boolean isEncrypted() {
return priv == null && (super.isEncrypted() || (parent != null && parent.isEncrypted()));
}