APDU Command
Posted: Tue Dec 13, 2016 8:53 pm
I got this code from the internet and I want to play around with it. But I dont know how to send command to APDU?
Your help is greatly appreciated.
Your help is greatly appreciated.
Code: Select all
package Eighth;
import javacard.framework.*;
import javacard.security.*;
import javacardx.crypto.*;
public class ECDSA extends Applet
{
private byte[] plaintext ;
private ECPrivateKey objECDSAPriKey=null; // Object for ECDSA Private Key
private ECPublicKey key=null; // Object for ECDSA Public Key
private KeyPair objECDSAKeyPair=null; // Object for ECDSA Key Pair
private Signature objECDSASign=null;
final static short BAS = 0;
private final static byte[] fp = new byte[] {
(byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF,
(byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF,
(byte)0xFF, (byte)0xFE, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF,
(byte)0xFF, (byte)0xFF, (byte)0xFF };
private final static byte[] r = new byte[] {
(byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF,
(byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0x99, (byte)0xDE,
(byte)0xF8, (byte)0x36, (byte)0x14, (byte)0x6B, (byte)0xC9, (byte)0xB1, (byte)0xB4,
(byte)0xD2, (byte)0x28, (byte)0x31 };
private final static byte[] a = new byte[] {
(byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF,
(byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF,
(byte)0xFF, (byte)0xFE, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF, (byte)0xFF,
(byte)0xFF, (byte)0xFF, (byte)0xFC };
private final static byte[] b = new byte[] {
(byte)0x64, (byte)0x21, (byte)0x05, (byte)0x19, (byte)0xE5, (byte)0x9C, (byte)0x80,
(byte)0xE7, (byte)0x0F, (byte)0xA7, (byte)0xE9, (byte)0xAB, (byte)0x72, (byte)0x24,
(byte)0x30, (byte)0x49, (byte)0xFE, (byte)0xB8, (byte)0xDE, (byte)0xEC, (byte)0xC1,
(byte)0x46, (byte)0xB9, (byte)0xB1 };
private final static byte[] g = new byte[] {
(byte)0x04, (byte)0x18, (byte)0x8D, (byte)0xA8, (byte)0x0E, (byte)0xB0, (byte)0x30,
(byte)0x90, (byte)0xF6, (byte)0x7C, (byte)0xBF, (byte)0x20, (byte)0xEB, (byte)0x43,
(byte)0xA1, (byte)0x88, (byte)0x00, (byte)0xF4, (byte)0xFF, (byte)0x0A, (byte)0xFD,
(byte)0x82, (byte)0xFF, (byte)0x10, (byte)0x12, (byte)0x07, (byte)0x19, (byte)0x2B,
(byte)0x95, (byte)0xFF, (byte)0xC8, (byte)0xDA, (byte)0x78, (byte)0x63, (byte)0x10,
(byte)0x11, (byte)0xED, (byte)0x6B, (byte)0x24, (byte)0xCD, (byte)0xD5, (byte)0x73,
(byte)0xF9, (byte)0x77, (byte)0xA1, (byte)0x1E, (byte)0x79, (byte)0x48, (byte)0x11 }; //49
private final static short k = 1;
public static void install(byte[] bArray, short bOffset, byte bLength){
new ECDSA(bArray, bOffset, bLength);
}
private ECDSA(byte bArray[], short bOffset, byte bLength){
plaintext = new byte[0x100] ;
Util.arrayFillNonAtomic(plaintext, BAS, (short)0x100, (byte)0);
register();
}
public void process(APDU apdu){
byte buf[] = apdu.getBuffer();
switch(buf[1])
{
case (byte)0xA4:
break;
case (byte)0x46:
try{
objECDSAPriKey = (ECPrivateKey)KeyBuilder.buildKey(KeyBuilder.TYPE_EC_FP_PRIVATE, KeyBuilder.LENGTH_EC_FP_192, false);
//ISOException.throwIt((short)0x8888);
key = (ECPublicKey)KeyBuilder.buildKey(KeyBuilder.TYPE_EC_FP_PUBLIC, KeyBuilder.LENGTH_EC_FP_192, false);
key.setFieldFP(fp, (short)0, (short)fp.length);
key.setR(r, (short)0, (short)r.length);
key.setA(a, (short)0, (short)a.length);
key.setB(b, (short)0, (short)b.length);
key.setG(g, (short)0, (short)g.length);
key.setK(k);
objECDSAKeyPair = new KeyPair(KeyPair.ALG_EC_FP, KeyBuilder.LENGTH_EC_FP_192);
}
catch(CryptoException c)
{
short reason = c.getReason();
ISOException.throwIt(reason);
}
// On-Card Key Generation Process
objECDSAKeyPair.genKeyPair();
// Obtain Key References
objECDSAPriKey = (ECPrivateKey)objECDSAKeyPair.getPrivate();
key = (ECPublicKey)objECDSAKeyPair.getPublic();
// Create Signature Object
objECDSASign = Signature.getInstance(Signature.ALG_ECDSA_SHA, false);
break;
case (byte)0x2E:
short Le = apdu.setOutgoing();
short sSignLen=0 ;
// Init with Private Key
objECDSASign.init(objECDSAPriKey, Signature.MODE_SIGN);
// Sign Data
sSignLen = objECDSASign.sign(plaintext, BAS, Le, buf, BAS);
apdu.setOutgoingLength(sSignLen);
apdu.sendBytes(BAS, sSignLen);
default:
ISOException.throwIt(ISO7816.SW_INS_NOT_SUPPORTED);
}
return;
}
}