tangem-app-android-audited/app/src/main/java/com/tangem/wallet/cardano/CardanoEngine.java
2019-09-18 09:38:48 +00:00

792 lines
29 KiB
Java

package com.tangem.wallet.cardano;
import android.net.Uri;
import android.text.InputFilter;
import android.util.Base64;
import android.util.Log;
import com.tangem.App;
import com.tangem.Constant;
import com.tangem.data.local.PendingTransactionsStorage;
import com.tangem.data.network.ServerApiAdalite;
import com.tangem.data.network.model.AdaliteResponse;
import com.tangem.data.network.model.AdaliteResponseUtxo;
import com.tangem.data.network.model.AdaliteTxData;
import com.tangem.data.network.model.AdaliteUtxoData;
import com.tangem.tangem_card.data.TangemCard;
import com.tangem.tangem_card.tasks.SignTask;
import com.tangem.tangem_card.util.Util;
import com.tangem.util.DecimalDigitsInputFilter;
import com.tangem.wallet.BTCUtils;
import com.tangem.wallet.BalanceValidator;
import com.tangem.wallet.Base58;
import com.tangem.wallet.BuildConfig;
import com.tangem.wallet.CoinData;
import com.tangem.wallet.CoinEngine;
import com.tangem.wallet.R;
import com.tangem.wallet.TangemContext;
import org.spongycastle.crypto.Digest;
import org.spongycastle.crypto.util.DigestFactory;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.math.BigDecimal;
import java.math.RoundingMode;
import java.util.List;
import java.util.zip.CRC32;
import co.nstant.in.cbor.CborBuilder;
import co.nstant.in.cbor.CborDecoder;
import co.nstant.in.cbor.CborEncoder;
import co.nstant.in.cbor.CborException;
import co.nstant.in.cbor.builder.ArrayBuilder;
import co.nstant.in.cbor.model.Array;
import co.nstant.in.cbor.model.ByteString;
import co.nstant.in.cbor.model.DataItem;
import co.nstant.in.cbor.model.UnsignedInteger;
import static com.tangem.wallet.Base58.decodeBase58;
import static com.tangem.wallet.Base58.encodeBase58;
public class CardanoEngine extends CoinEngine {
private static final String TAG = CardanoEngine.class.getSimpleName();
private static final long protocolMagic = 764824073;
public CardanoData coinData = null;
public CardanoEngine(TangemContext context) throws Exception {
super(context);
if (context.getCoinData() == null) {
coinData = new CardanoData();
context.setCoinData(coinData);
} else if (context.getCoinData() instanceof CardanoData) {
coinData = (CardanoData) context.getCoinData();
} else {
throw new Exception("Invalid type of Blockchain data for CardanoEngine");
}
}
public CardanoEngine() {
super();
}
private static int getDecimals() {
return 6;
}
private void checkBlockchainDataExists() throws Exception {
if (coinData == null) throw new Exception("No blockchain data");
}
@Override
public boolean awaitingConfirmation() {
return false;
}
@Override
public String getBalanceHTML() {
Amount balance = getBalance();
if (balance != null) {
return balance.toDescriptionString(getDecimals());
} else {
return "";
}
}
@Override
public String getBalanceCurrency() {
return "ADA";
}
@Override
public boolean isBalanceNotZero() {
if (coinData == null) return false;
if (coinData.getBalanceInInternalUnits() == null) return false;
return coinData.getBalanceInInternalUnits().notZero();
}
@Override
public boolean hasBalanceInfo() {
if (coinData == null) return false;
return coinData.hasBalanceInfo();
}
@Override
public boolean isExtractPossible() {
if (!hasBalanceInfo()) {
ctx.setMessage(R.string.loaded_wallet_error_obtaining_blockchain_data);
} else if (!isBalanceNotZero()) {
ctx.setMessage(R.string.general_wallet_empty);
} else if (awaitingConfirmation()) {
ctx.setMessage(R.string.loaded_wallet_message_wait);
} else if (coinData.getUnspentOutputs().size() == 0) {
ctx.setMessage(R.string.loaded_wallet_message_refresh);
} else {
return true;
}
return false;
}
@Override
public String getFeeCurrency() {
return "ADA";
}
@Override
public boolean validateAddress(String address) {
if (address == null || address.isEmpty()) {
return false;
}
byte[] decAddress = Base58.decodeBase58(address);
if (decAddress == null || decAddress.length == 0) {
return false;
}
ByteArrayInputStream bais = new ByteArrayInputStream(decAddress);
try {
List<DataItem> addressList = ((Array) new CborDecoder(bais).decode().get(0)).getDataItems();
byte[] addressBytes = ((ByteString) addressList.get(0)).getBytes();
long addressChecksum = ((UnsignedInteger) addressList.get(1)).getValue().longValue();
final CRC32 crc32 = new CRC32();
crc32.update(addressBytes);
long calculatedChecksum = crc32.getValue();
if (addressChecksum != calculatedChecksum) {
return false;
}
} catch (Exception e) {
return false;
}
return true;
}
@Override
public boolean isNeedCheckNode() {
return true;
}
@Override
public Uri getWalletExplorerUri() {
return Uri.parse("https://cardanoexplorer.com/address/" + ctx.getCoinData().getWallet());
}
@Override
public Uri getShareWalletUri() {
return Uri.parse(ctx.getCoinData().getWallet());
}
@Override
public InputFilter[] getAmountInputFilters() {
return new InputFilter[]{new DecimalDigitsInputFilter(getDecimals())};
}
@Override
public boolean checkNewTransactionAmount(Amount amount) {
if (BuildConfig.FLAVOR == Constant.FLAVOR_TANGEM_CARDANO) {
return true;
}
if (coinData == null) return false;
if (amount.compareTo(convertToAmount(coinData.getBalanceInInternalUnits())) > 0) {
return false;
}
return true;
}
@Override
public boolean checkNewTransactionAmountAndFee(Amount amountValue, Amount feeValue, Boolean isIncludeFee) {
InternalAmount fee;
InternalAmount amount;
try {
checkBlockchainDataExists();
amount = convertToInternalAmount(amountValue);
fee = convertToInternalAmount(feeValue);
} catch (Exception e) {
e.printStackTrace();
return false;
}
if (fee == null || amount == null)
return false;
if (fee.isZero() || amount.isZero())
return false;
if (isIncludeFee && (amount.compareTo(coinData.getBalanceInInternalUnits()) > 0 || amount.compareTo(fee) < 0))
return false;
if (!isIncludeFee && amount.add(fee).compareTo(coinData.getBalanceInInternalUnits()) > 0)
return false;
return true;
}
@Override
public boolean validateBalance(BalanceValidator balanceValidator) {
try {
if (((ctx.getCard().getOfflineBalance() == null) && !ctx.getCoinData().isBalanceReceived()) || (!ctx.getCoinData().isBalanceReceived() && (ctx.getCard().getRemainingSignatures() != ctx.getCard().getMaxSignatures()))) {
balanceValidator.setScore(0);
balanceValidator.setFirstLine(R.string.balance_validator_first_line_unknown_balance);
balanceValidator.setSecondLine(R.string.balance_validator_second_line_unverified_balance);
return false;
}
if (coinData.isBalanceReceived()) {// && coinData.isBalanceEqual()) { TODO:check
balanceValidator.setScore(100);
balanceValidator.setFirstLine(R.string.balance_validator_first_line_verified_balance);
balanceValidator.setSecondLine(R.string.balance_validator_second_line_confirmed_in_blockchain);
if (coinData.getBalanceInInternalUnits().isZero()) {
balanceValidator.setFirstLine(R.string.balance_validator_first_line_empty_wallet);
balanceValidator.setSecondLine(R.string.empty_string);
}
}
if ((ctx.getCard().getOfflineBalance() != null) && !coinData.isBalanceReceived() && (ctx.getCard().getRemainingSignatures() == ctx.getCard().getMaxSignatures()) && coinData.getBalanceInInternalUnits().notZero()) {
balanceValidator.setScore(80);
balanceValidator.setFirstLine(R.string.balance_validator_first_line_verified_offline);
balanceValidator.setSecondLine(R.string.balance_validator_second_line_internet_to_get_balance);
}
return true;
} catch (Exception e) {
e.printStackTrace();
return false;
}
}
@Override
public Amount getBalance() {
if (!hasBalanceInfo()) return null;
return convertToAmount(coinData.getBalanceInInternalUnits());
}
@Override
public String evaluateFeeEquivalent(String fee) {
if (!coinData.getAmountEquivalentDescriptionAvailable()) return "";
try {
Amount feeAmount = new Amount(fee, getFeeCurrency());
return feeAmount.toEquivalentString(coinData.getRate());
} catch (Exception e) {
return "";
}
}
@Override
public String getBalanceEquivalent() {
if (coinData == null || !coinData.getAmountEquivalentDescriptionAvailable()) return "";
Amount balance = getBalance();
if (balance == null) return "";
return balance.toEquivalentString(coinData.getRate());
}
@Override
public String calculateAddress(byte[] pkUncompressed) throws CborException, IOException {
ByteArrayOutputStream exBaos = new ByteArrayOutputStream();
exBaos.write(pkUncompressed);
exBaos.write(BTCUtils.fromHex("0000000000000000000000000000000000000000000000000000000000000000"));
byte[] pkExtended = exBaos.toByteArray();
exBaos.reset();
new CborEncoder(exBaos).encode(new CborBuilder()
.addArray()
.add(0)
.addArray()
.add(0)
.add(pkExtended)
.end()
.addMap()
.end()
.end()
.build());
byte[] forSha3 = exBaos.toByteArray();
Digest sha3 = DigestFactory.createSHA3_256();
sha3.update(forSha3, 0, forSha3.length);
byte[] forBlake = new byte[32];
sha3.doFinal(forBlake, 0);
final Blake2b blake2b = Blake2b.Digest.newInstance(28);
byte[] pkHash = blake2b.digest(forBlake);
//pkHash + attributes
ByteArrayOutputStream baos = new ByteArrayOutputStream();
new CborEncoder(baos).encode(new CborBuilder()
.addArray()
.add(pkHash)
.addMap()//additional attributes
.end()
.add(0)//address type
.end()
.build());
byte[] addr = baos.toByteArray();
final CRC32 crc32 = new CRC32();
crc32.update(addr);
long checksum = crc32.getValue();
DataItem addrItem = new CborBuilder().add(addr).build().get(0);
addrItem.setTag(24);
//addr + checksum
baos.reset();
new CborEncoder(baos).encode(new CborBuilder()
.addArray()
.add(addrItem)
.add(checksum)
.end()
.build());
byte[] hexAddress = baos.toByteArray();
return encodeBase58(hexAddress);
}
@Override
public Amount convertToAmount(InternalAmount internalAmount) {
BigDecimal d = internalAmount.divide(new BigDecimal("1000000"));
return new Amount(d, getBalanceCurrency());
}
@Override
public Amount convertToAmount(String strAmount, String currency) {
return new Amount(strAmount, currency);
}
@Override
public InternalAmount convertToInternalAmount(Amount amount) {
BigDecimal d = amount.multiply(new BigDecimal("1000000"));
return new InternalAmount(d, "Lovelace");
}
@Override
public InternalAmount convertToInternalAmount(byte[] bytes) {
if (bytes == null) return null;
byte[] reversed = new byte[bytes.length];
for (int i = 0; i < bytes.length; i++) reversed[i] = bytes[bytes.length - i - 1];
return new InternalAmount(Util.byteArrayToLong(reversed), "Lovelace");
}
@Override
public byte[] convertToByteArray(InternalAmount internalAmount) {
byte[] bytes = Util.longToByteArray(internalAmount.longValueExact());
// byte[] reversed = new byte[bytes.length]; TODO: check if needed
// for (int i = 0; i < bytes.length; i++) reversed[i] = bytes[bytes.length - i - 1];
// return reversed;
return bytes;
}
@Override
public CoinData createCoinData() {
return new CardanoData();
}
@Override
public String getUnspentInputsDescription() {
return coinData.getUnspentInputsDescription();
}
@Override
public SignTask.TransactionToSign constructTransaction(Amount amountValue, Amount feeValue, boolean IncFee, String targetAddress) throws Exception {
checkBlockchainDataExists();
String myAddress = ctx.getCoinData().getWallet();
byte[] pbKey = ctx.getCard().getWalletPublicKey();
List<CardanoData.UnspentOutput> utxoList = coinData.getUnspentOutputs();
long fullAmount = coinData.getBalance();
// long fullAmount = 0; TODO: check
// for (int i = 0; i < unspentOutputs.size(); ++i) {
// fullAmount += unspentOutputs.get(i).value;
// }
long fees = convertToInternalAmount(feeValue).longValueExact();
long amount = convertToInternalAmount(amountValue).longValueExact();
long change = fullAmount - amount;
if (IncFee) {
amount = amount - fees;
} else {
change = change - fees;
}
final long amountFinal = amount;
final long changeFinal = change;
//TODO - uncomment
// if (amount + fees > fullAmount) {
// throw new CardProtocol.TangemException_WrongAmount(String.format("Balance (%d) < change (%d) + amount (%d)", fullAmount, change, amount));
// }
CborBuilder cborBuilder = new CborBuilder();
ArrayBuilder<CborBuilder> txArray = cborBuilder.addArray();
ArrayBuilder<ArrayBuilder<CborBuilder>> inputsArray = txArray.startArray();
ArrayBuilder<ArrayBuilder<CborBuilder>> outputsArray = txArray.startArray();
ByteArrayOutputStream baos = new ByteArrayOutputStream();
//Inputs
for (CardanoData.UnspentOutput utxo : utxoList) {
baos.reset();
//txID + inputPos
new CborEncoder(baos).encode(new CborBuilder()
.addArray()
.add(Util.fromHexString(utxo.txID))
.add(utxo.Index)
.end()
.build());
byte[] input = baos.toByteArray();
DataItem inputItem = new CborBuilder().add(input).build().get(0);
inputItem.setTag(24);
//input type + input
inputsArray
.addArray()
.add(0)
.add(inputItem)
.end();
}
//1st output
DataItem targetAddressItem = new CborDecoder(new ByteArrayInputStream(decodeBase58(targetAddress))).decode().get(0);
outputsArray
.addArray()
.add(targetAddressItem)
.add(amountFinal)
.end();
//2nd output (optional)
if (changeFinal > 0) {
DataItem myAddressItem = new CborDecoder(new ByteArrayInputStream(decodeBase58(myAddress))).decode().get(0);
outputsArray
.addArray()
.add(myAddressItem)
.add(changeFinal)
.end();
}
inputsArray.end();
outputsArray.end();
txArray.addMap().end();
baos.reset();
new CborEncoder(baos).encode(cborBuilder.build());
byte[] txBody = baos.toByteArray();
final Blake2b blake2b = Blake2b.Digest.newInstance(32);//28?
byte[] txHash = blake2b.digest(txBody);
baos.reset();
new CborEncoder(baos).encode(new CborBuilder().add(protocolMagic).build());
byte[] magic = baos.toByteArray();
//dataToSign prefix
baos.reset();
baos.write(new byte[]{(byte) 0x01});
baos.write(magic);
baos.write(new byte[]{(byte) 0x58, (byte) 0x20});
baos.write(txHash);
byte[] dataToSign = baos.toByteArray();
return new SignTask.TransactionToSign() {
@Override
public boolean isSigningMethodSupported(TangemCard.SigningMethod signingMethod) {
return signingMethod == TangemCard.SigningMethod.Sign_Hash || signingMethod == TangemCard.SigningMethod.Sign_Raw;
}
@Override
public byte[][] getHashesToSign() {
byte[][] dataForSign = new byte[1][];
dataForSign[0] = dataToSign;
return dataForSign;
}
@Override
public byte[] getRawDataToSign() throws Exception {
throw new Exception("Signing of raw transaction not supported for " + this.getClass().getSimpleName());
}
@Override
public String getHashAlgToSign() throws Exception {
throw new Exception("Signing of raw transaction not supported for " + this.getClass().getSimpleName());
}
@Override
public byte[] getIssuerTransactionSignature(byte[] dataToSignByIssuer) throws Exception {
throw new Exception("Transaction validation by issuer not supported in this version");
}
@Override
public byte[] onSignCompleted(byte[] signFromCard) throws Exception {
ByteArrayOutputStream exBaos = new ByteArrayOutputStream();
exBaos.write(ctx.getCard().getWalletPublicKey());
exBaos.write(BTCUtils.fromHex("0000000000000000000000000000000000000000000000000000000000000000"));
byte[] pkExtended = exBaos.toByteArray();
//pubkey + signature
baos.reset();
new CborEncoder(baos).encode(new CborBuilder()
.addArray()
.add(pkExtended)
.add(signFromCard)
.end()
.build());
byte[] witnessBody = baos.toByteArray();
DataItem witnessBodyItem = new CborBuilder().add(witnessBody).build().get(0);
witnessBodyItem.setTag(24);
//array of witnesses
CborBuilder witnessBuilder = new CborBuilder();
ArrayBuilder<CborBuilder> witnessArrayBuilder = witnessBuilder.addArray();
//witness type + witness body
for (CardanoData.UnspentOutput utxo : coinData.getUnspentOutputs()) {
witnessArrayBuilder
.addArray()
.add(0)
.add(witnessBodyItem)
.end();
}
baos.reset();
new CborEncoder(baos).encode(witnessBuilder.build());
byte[] witness = baos.toByteArray();
baos.reset();
baos.write(new byte[]{(byte) 0x82});
baos.write(txBody);
baos.write(witness);
// new CborEncoder(baos).encode(new CborBuilder()
// .addArray()
// .add(txBody)
// .add(witness)
// .end()
// .build());
byte[] txForSend = baos.toByteArray();
notifyOnNeedSendTransaction(txForSend);
//String hex = BTCUtils.toHex(txForSend);
return txForSend;
}
};
}
private int calculateEstimatedTransactionSize(String targetAddress, Amount amount) {
Amount feeDummy = new Amount(new BigDecimal(0.2).setScale(getDecimals(), RoundingMode.DOWN), getFeeCurrency());
try {
OnNeedSendTransaction onNeedSendTransactionBackup = onNeedSendTransaction;
onNeedSendTransaction = (tx) -> {
}; // empty function to bypass exception
SignTask.TransactionToSign ttsDummy = constructTransaction(amount, feeDummy, true, targetAddress);
byte[] txForSendDummy = ttsDummy.onSignCompleted(new byte[64]);
onNeedSendTransaction = onNeedSendTransactionBackup;
Log.e(TAG, "txForSendDummy.length=" + String.valueOf(txForSendDummy.length));
return txForSendDummy.length;
} catch (Exception e) {
e.printStackTrace();
Log.e(TAG, "Can't calculate transaction size -> use default!");
return 1000;
}
}
@Override
public void requestBalanceAndUnspentTransactions(BlockchainRequestsCallbacks blockchainRequestsCallbacks) {
final ServerApiAdalite serverApiAdalite = new ServerApiAdalite();
ServerApiAdalite.ResponseListener adaliteListener = new ServerApiAdalite.ResponseListener() {
@Override
public void onSuccess(String method, AdaliteResponse adaliteResponse) {
Log.i(TAG, "onSuccess: " + method);
try {
String walletAddress = adaliteResponse.getRight().getCaAddress();
if (!walletAddress.equals(coinData.getWallet())) {
// todo - check
throw new Exception("Invalid wallet address in answer!");
}
coinData.setBalanceReceived(true);
coinData.setBalance(adaliteResponse.getRight().getCaBalance().getGetCoin());
coinData.setValidationNodeDescription(ServerApiAdalite.lastNode);
//check pending
if (App.pendingTransactionsStorage.hasTransactions(ctx.getCard())) {
for (PendingTransactionsStorage.TransactionInfo pendingTx : App.pendingTransactionsStorage.getTransactions(ctx.getCard()).getTransactions()) {
String pendingId = CalculateTxHash(pendingTx.getTx());
for (AdaliteTxData walletTx : adaliteResponse.getRight().getCaTxList()) {
if (walletTx.getCtbId().equals(pendingId)) {
App.pendingTransactionsStorage.removeTransaction(ctx.getCard(), pendingTx.getTx());
}
}
}
}
} catch (Exception e) {
Log.e(TAG, "FAIL ADALITE_ADDRESS Exception");
e.printStackTrace();
}
if (serverApiAdalite.isRequestsSequenceCompleted()) {
blockchainRequestsCallbacks.onComplete(!ctx.hasError());
} else {
blockchainRequestsCallbacks.onProgress();
}
}
@Override
public void onSuccess(String method, AdaliteResponseUtxo adaliteResponseUtxo) {
Log.i(TAG, "onSuccess: " + method);
try {
coinData.getUnspentOutputs().clear();
for (AdaliteUtxoData utxo : adaliteResponseUtxo.getRight()) {
CardanoData.UnspentOutput unspentOutput = new CardanoData.UnspentOutput();
unspentOutput.txID = utxo.getCuId();
unspentOutput.Amount = utxo.getCuCoins().getGetCoin();
unspentOutput.Index = utxo.getCuOutIndex();
coinData.getUnspentOutputs().add(unspentOutput);
}
} catch (Exception e) {
Log.e(TAG, "FAIL ADALITE_UNSPENT_OUTPUTS Exception");
e.printStackTrace();
}
if (serverApiAdalite.isRequestsSequenceCompleted()) {
blockchainRequestsCallbacks.onComplete(!ctx.hasError());
} else {
blockchainRequestsCallbacks.onProgress();
}
}
@Override
public void onSuccess(String method, List listResponse) {
Log.e(TAG, "Wrong response type for requestBalanceAndUnspentTransactions");
ctx.setError("Wrong response type for requestBalanceAndUnspentTransactions");
blockchainRequestsCallbacks.onComplete(false);
}
@Override
public void onFail(String method, String message) {
Log.e(TAG, "onFail: " + method + " " + message);
ctx.setError(message);
if (serverApiAdalite.isRequestsSequenceCompleted()) {
blockchainRequestsCallbacks.onComplete(false);
} else {
blockchainRequestsCallbacks.onProgress();
}
}
};
serverApiAdalite.setResponseListener(adaliteListener);
serverApiAdalite.requestData(ServerApiAdalite.ADALITE_ADDRESS, ctx.getCoinData().getWallet(), "");
serverApiAdalite.requestData(ServerApiAdalite.ADALITE_UNSPENT_OUTPUTS, ctx.getCoinData().getWallet(), "");
}
@Override
public void requestFee(BlockchainRequestsCallbacks blockchainRequestsCallbacks, String targetAddress, Amount amount) {
final double A = 0.155381;
final double B = 0.000043946;
int calcSize = calculateEstimatedTransactionSize(targetAddress, amount);
double fee = A + B * calcSize;
Amount feeAmount = new Amount(new BigDecimal(fee).setScale(getDecimals(), RoundingMode.UP), getFeeCurrency());
coinData.minFee = feeAmount;
coinData.normalFee = feeAmount;
coinData.maxFee = feeAmount;
blockchainRequestsCallbacks.onComplete(true);
}
@Override
public void requestSendTransaction(BlockchainRequestsCallbacks blockchainRequestsCallbacks, byte[] txForSend) {
final ServerApiAdalite serverApiAdalite = new ServerApiAdalite();
final String txStr = Base64.encodeToString(txForSend, Base64.NO_WRAP);
// BTCUtils.toHex(txForSend);
final ServerApiAdalite.ResponseListener responseListener = new ServerApiAdalite.ResponseListener() {
@Override
public void onSuccess(String method, AdaliteResponse adaliteResponse) {
Log.e(TAG, "Wrong response type for requestSendTransaction");
ctx.setError("Wrong response type for requestSendTransaction");
}
@Override
public void onSuccess(String method, AdaliteResponseUtxo adaliteResponseUtxo) {
Log.e(TAG, "Wrong response type for requestSendTransaction");
ctx.setError("Wrong response type for requestSendTransaction");
}
@Override
public void onSuccess(String method, List listResponse) {
if (method.equals(ServerApiAdalite.ADALITE_SEND)) {
String resultString = listResponse.toString();
try {
if (resultString.isEmpty()) {
ctx.setError("No response from node");
blockchainRequestsCallbacks.onComplete(false);
} else { // TODO: Make check for a valid send response
ctx.setError(null);
blockchainRequestsCallbacks.onComplete(true);
}
} catch (Exception e) {
if (e.getMessage() != null) {
ctx.setError(e.getMessage());
blockchainRequestsCallbacks.onComplete(false);
} else {
ctx.setError(e.getClass().getName());
blockchainRequestsCallbacks.onComplete(false);
Log.e(TAG, resultString);
}
}
}
}
@Override
public void onFail(String method, String message) {
Log.e(TAG, "onFail: " + method + " " + message);
ctx.setError(message);
blockchainRequestsCallbacks.onComplete(false);
}
};
serverApiAdalite.setResponseListener(responseListener);
serverApiAdalite.requestData(ServerApiAdalite.ADALITE_SEND, "", txStr);
}
@Override
public boolean allowSelectFeeLevel() {
return false;
}
@Override
public int pendingTransactionTimeoutInSeconds() {
return 60;
}
private String CalculateTxHash(String tx) throws CborException {
Array txArray = (Array) CborDecoder.decode(BTCUtils.fromHex(tx)).get(0);
DataItem txBodyItem = txArray.getDataItems().get(0);
ByteArrayOutputStream baos = new ByteArrayOutputStream();
new CborEncoder(baos).encode(txBodyItem);
byte[] txBody = baos.toByteArray();
final Blake2b blake2b = Blake2b.Digest.newInstance(32);
return BTCUtils.toHex(blake2b.digest(txBody));
}
}