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Updated on 2026-08-14

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Tangem 2019-04-02 10:55:09 +03:00
parent ce7b5e9f84
commit 517d3e1ccd
5 changed files with 198 additions and 21 deletions
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card-common/src/main/java/com/tangem/card_common/tasks/OneTouchSignTask.java Normal file
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package com.tangem.card_common.tasks;
import com.tangem.card_common.data.TangemCard;
import com.tangem.card_common.data.external.CardDataSubstitutionProvider;
import com.tangem.card_common.data.external.PINsProvider;
import com.tangem.card_common.reader.CardProtocol;
import com.tangem.card_common.reader.NfcReader;
import com.tangem.card_common.reader.TLV;
import com.tangem.card_common.reader.TLVList;
import com.tangem.card_common.util.Log;
import java.io.ByteArrayOutputStream;
public class OneTouchSignTask extends ReadCardInfoTask {
public static final String TAG = OneTouchSignTask.class.getSimpleName();
/**
* Transaction Engine request/notifications during sign process
*/
public interface TransactionToSign {
boolean isSigningOnCardSupported(TangemCard card);
byte[][] getHashesToSign(TangemCard card) throws Exception;
byte[] getRawDataToSign(TangemCard card) throws Exception;
String getHashAlgToSign(TangemCard card) throws Exception;
byte[] getIssuerTransactionSignature(TangemCard card, byte[] dataToSignByIssuer) throws Exception;
void onSignCompleted(TangemCard card, byte[] signature) throws Exception;
}
private TransactionToSign transactionToSign;
public OneTouchSignTask(NfcReader reader, CardDataSubstitutionProvider cardDataSubstitutionProvider, PINsProvider pinsProvider, CardProtocol.Notifications notifications, TransactionToSign transactionToSign) {
super(reader, cardDataSubstitutionProvider, pinsProvider, notifications);
this.transactionToSign = transactionToSign;
}
@Override
public void run_Task() throws Exception {
super.run_Task();
Log.i(TAG, "Manufacturer: " + protocol.getCard().getManufacturer().getOfficialName());
mNotifications.onReadProgress(protocol, 30);
if (isCancelled) return;
if (mCard.getPauseBeforePIN2() > 0) {
mNotifications.onReadWait(mCard.getPauseBeforePIN2());
}
if (!transactionToSign.isSigningOnCardSupported(mCard)) {
throw new CardProtocol.TangemException("Signing method isn't supported!");
}
TLVList signResult;
switch (mCard.getSigningMethod()) {
case Sign_Hash:
signResult = protocol.run_SignHashes(pinsProvider.getPIN2(), transactionToSign.getHashesToSign(mCard), null, null, null);
break;
case Sign_Hash_Validated_By_Issuer:
case Sign_Hash_Validated_By_Issuer_And_WriteIssuerData:
ByteArrayOutputStream bs = new ByteArrayOutputStream();
byte[][] hashes = transactionToSign.getHashesToSign(mCard);
if (hashes.length > 10) throw new CardProtocol.TangemException("To much hashes in one transaction!");
for (int i = 0; i < hashes.length; i++) {
if (i != 0 && hashes[0].length != hashes[i].length)
throw new CardProtocol.TangemException("Hashes length must be identical!");
bs.write(hashes[i]);
}
signResult = protocol.run_SignHashes(pinsProvider.getPIN2(), hashes, transactionToSign.getIssuerTransactionSignature(mCard, bs.toByteArray()), null, null);
break;
case Sign_Raw:
signResult = protocol.run_SignRaw(pinsProvider.getPIN2(), transactionToSign.getHashAlgToSign(mCard), transactionToSign.getRawDataToSign(mCard), null, null, null);
break;
case Sign_Raw_Validated_By_Issuer:
case Sign_Raw_Validated_By_Issuer_And_WriteIssuerData:
byte[] txOut = transactionToSign.getRawDataToSign(mCard);
signResult = protocol.run_SignRaw(pinsProvider.getPIN2(), transactionToSign.getHashAlgToSign(mCard), txOut, transactionToSign.getIssuerTransactionSignature(mCard, txOut), null, null);
break;
default:
throw new CardProtocol.TangemException("Signing method isn't supported!");
}
transactionToSign.onSignCompleted(mCard, signResult.getTLV(TLV.Tag.TAG_Signature).Value);
mNotifications.onReadProgress(protocol, 100);
}
}