/**
* Generate an assymetric RSA key pair according to ISO7816-8, Section 5.1. We only support RSA
* 1024 bit at the moment, and return data in simple TLV data objects, tags 81 and 82.
*
* <p>Successful MSE command has to be performed prior to this one.
*/
private void processGenerateAssymetricKeyPair(APDU apdu) {
// This is only valid in state initial (at the moment)
if (state != STATE_INITIAL) {
ISOException.throwIt(SW_INS_NOT_SUPPORTED);
}
byte[] buf = apdu.getBuffer();
byte p1 = buf[OFFSET_P1];
byte p2 = buf[OFFSET_P2];
if (p1 != (byte) 0x80 || p2 != (byte) 0x00) {
ISOException.throwIt(SW_INCORRECT_P1P2);
}
if (currentPrivateKey[0] == null) {
ISOException.throwIt(SW_CONDITIONS_NOT_SATISFIED);
}
KeyPair pair = new KeyPair(tempKeyPublic, (RSAPrivateCrtKey) currentPrivateKey[0]);
pair.genKeyPair();
// Sanity check, the KeyPair class should regenerate the keys "in place".
if (pair.getPrivate() != currentPrivateKey[0] || pair.getPublic() != tempKeyPublic) {
ISOException.throwIt(SW_DATA_INVALID);
}
apdu.setOutgoing();
short len = (short) 0;
short offset = 0;
buf[offset++] = (byte) 0x81;
len = tempKeyPublic.getModulus(buf, (short) (offset + 2));
buf[offset++] = (byte) 0x81;
buf[offset++] = (byte) len;
offset += len;
buf[offset++] = (byte) 0x82;
len = tempKeyPublic.getExponent(buf, (short) (offset + 1));
buf[offset++] = (byte) len;
offset += len;
apdu.setOutgoingLength(offset);
apdu.sendBytes((short) 0, offset);
}
private cardTest() {
// Instantiate all object the applet will ever need
// pin= new OwnerPIN(MAX_LENGTH, MAX_ATTEMPTS);
// if(bArray==null){//check
// If no pin is passed as parameter at installation time use default 0000
// pin.update(new byte[] {0x00,0x00,0x00,0x00}, (short) 0, (byte) 0x04);
// }
// else {
// pin.update(bArray, bOffset, bLength);
// }
try {
// Set signature algorithm
sig = Signature.getInstance(Signature.ALG_RSA_SHA_PKCS1, false);
// Generate the card keys
keys.genKeyPair();
// Get the public key
k = (RSAPublicKey) keys.getPublic();
// Get the private key
k2 = (RSAPrivateKey) keys.getPrivate();
// Initialize the signature object with card private key
sig.init(k2, Signature.MODE_SIGN);
} catch (CryptoException ex) {
ISOException.throwIt((short) (ex.getReason()));
} catch (SecurityException ex) {
ISOException.throwIt((short) (0x6F10));
} catch (Exception ex) {
ISOException.throwIt((short) (0x6F20));
}
}
