wxleong/secora-blockchain-apdu

The secora-blockchain-apdu library is a Java package designed to handle the APDU commands of Infineon's SECORA™ Blockchain and Blockchain Security 2Go starter kit.

Introduction

The secora-blockchain-apdu library is a Java package designed to handle the APDU commands of Infineon's SECORA™ Blockchain and Blockchain Security 2Go starter kit. It was derived from the project BlockchainSecurity2Go-Android@085aa39.

Library Import Guide

To evaluate the library, you can import it into your project using the JitPack package repository.

User Guide for Android Application

To incorporate the library into an Android application, the IsoDep object needs to be wrapped within the NfcTransceiver interface. Here's an example:

import android.nfc.tech.IsoDep;
import com.github.infineon.NfcTranceiver;

import java.io.IOException;

/**
 * Wraps IsoDep tag into NfcTranceiver interface.
 * (this wrapper is used so that the com.github.infineon package
 * doesn't have any Android dependencies)
 */
public class IsoTagWrapper implements NfcTranceiver {

    private final IsoDep isoDep;

    private IsoTagWrapper(IsoDep isoDep) {
        this.isoDep = isoDep;
    }

    /**
     * Create wrapper of given IsoDep tag.
     *
     * @param isoDep
     * @return wrapper instance
     */
    public static IsoTagWrapper of(IsoDep isoDep) {
        return new IsoTagWrapper(isoDep);
    }

    /**
     * Sends a command APDU to the NFC card and returns the received response APDU.
     *
     * @param commandApdu command APDU to send
     * @return bytes received as response
     * @throws IOException in case of communication errors
     */
    @Override
    public byte[] transceive(byte[] commandApdu) throws IOException {

        if (!isoDep.isConnected()) {
            isoDep.connect();
        }
        return isoDep.transceive(commandApdu);
    }
}

Here's an example of how to read the public key from a SECORA™ Blockchain contactless card:

public void readPublicKey() {
    Tag tag = intent.getParcelableExtra(NfcAdapter.EXTRA_TAG);
    IsoDep isoDep = IsoDep.get(tag); // ISO 14443-4 Type A & B
    String pubkey = com.github.infineon
                       .NfcUtils.readPublicKeyOrCreateIfNotExists(
                           IsoTagWrapper.of(isoDep), 1
                       ).getPublicKeyInHexWithoutPrefix();
    isoDep.close();
}

Implementation Examples

• https://github.com/wxleong/secora-blockchain-walletconnect

License

This project is licensed under the MIT License - see the LICENSE file for details.