/** Calculate the residue and the jacobi number * */
void calculateResidueAndJacobi() {
try {
BigInteger n = new BigInteger(nField.getText());
BigInteger x = new BigInteger(xField.getText());
x2Label.setText(calc.squareMod(x, n).toString());
resultLabel.setText("" + calc.jacobi(x, n));
} catch (NumberFormatException e) {
clearResidueAndJacobi();
}
}
/** Listen for Button events. * */
public void actionPerformed(ActionEvent event) {
// Make a new n - set p, q, n, and labels.
if (event.getSource() == makeN) {
try {
KEYLENGTH = Integer.parseInt(kField.getText());
} catch (NumberFormatException e) {
KEYLENGTH = DEFAULT_KEYLENGTH;
kField.setText(Integer.toString(KEYLENGTH));
}
p = calc.makeBlumInt(KEYLENGTH);
q = calc.makeBlumInt(KEYLENGTH);
n = p.multiply(q);
pLabel.setText(" p = " + p);
qLabel.setText(" q = " + q);
nField.removeCaretListener(this);
nField.setText(n.toString());
nField.addCaretListener(this);
xField.setText("");
clearResidueAndJacobi();
} else if (event.getSource() == xField || event.getSource() == nField)
calculateResidueAndJacobi();
}