/**
* The ActionListener implementation
*
* @param event the event.
*/
public void actionPerformed(ActionEvent event) {
String searchText = textField.getText().trim();
if (searchText.equals("") && !saveAs.isSelected() && (fileLength > 10000000)) {
textPane.setText("Blank search text is not allowed for large IdTables.");
} else {
File outputFile = null;
if (saveAs.isSelected()) {
outputFile = chooser.getSelectedFile();
if (outputFile != null) {
String name = outputFile.getName();
int k = name.lastIndexOf(".");
if (k != -1) name = name.substring(0, k);
name += ".txt";
File parent = outputFile.getAbsoluteFile().getParentFile();
outputFile = new File(parent, name);
chooser.setSelectedFile(outputFile);
}
if (chooser.showSaveDialog(this) != JFileChooser.APPROVE_OPTION) System.exit(0);
outputFile = chooser.getSelectedFile();
}
textPane.setText("");
Searcher searcher = new Searcher(searchText, event.getSource().equals(searchPHI), outputFile);
searcher.start();
}
}
public static void main(String[] args) throws Exception {
//
// check args and get plaintext
if (args.length != 1) {
System.err.println("Usage: java MessageAuthenticationCodeExample text");
System.exit(1);
}
byte[] plainText = args[0].getBytes("UTF8");
//
// get a key for the HmacMD5 algorithm
System.out.println("\nStart generating key");
KeyGenerator keyGen = KeyGenerator.getInstance("HmacMD5");
SecretKey MD5key = keyGen.generateKey();
System.out.println("Finish generating key");
//
// get a MAC object and update it with the plaintext
Mac mac = Mac.getInstance("HmacMD5");
mac.init(MD5key);
mac.update(plainText);
//
// print out the provider used and the MAC
System.out.println("\n" + mac.getProvider().getInfo());
System.out.println("\nMAC: ");
System.out.println(new String(mac.doFinal(), "UTF8"));
}
public static void main(String[] args) throws Exception {
//
// verifica args e recebe o texto plano
if (args.length != 1) {
System.err.println("Usage: java DigitalSignatureExample text");
System.exit(1);
}
byte[] plainText = args[0].getBytes("UTF8");
//
// gera o par de chaves RSA
System.out.println("\nStart generating RSA key");
KeyPairGenerator keyGen = KeyPairGenerator.getInstance("RSA");
keyGen.initialize(1024);
KeyPair key = keyGen.generateKeyPair();
System.out.println("Finish generating RSA key");
//
// define um objeto signature para utilizar MD5 e RSA
// e assina o texto plano com a chave privada,
// o provider utilizado tambem eh impresso
Signature sig = Signature.getInstance("MD5WithRSA");
sig.initSign(key.getPrivate());
sig.update(plainText);
byte[] signature = sig.sign();
System.out.println(sig.getProvider().getInfo());
System.out.println("\nSignature:");
// converte o signature para hexadecimal
StringBuffer buf = new StringBuffer();
for (int i = 0; i < signature.length; i++) {
String hex = Integer.toHexString(0x0100 + (signature[i] & 0x00FF)).substring(1);
buf.append((hex.length() < 2 ? "0" : "") + hex);
}
// imprime o signature em hexadecimal
System.out.println(buf.toString());
//
// verifica a assinatura com a chave publica
System.out.println("\nStart signature verification");
sig.initVerify(key.getPublic());
sig.update(plainText);
try {
if (sig.verify(signature)) {
System.out.println("Signature verified");
} else System.out.println("Signature failed");
} catch (SignatureException se) {
System.out.println("Singature failed");
}
}
void getTable() {
if (chooser == null) {
File userdir = new File(System.getProperty("user.dir"));
chooser = new JFileChooser(userdir);
}
if (chooser.showOpenDialog(this) == JFileChooser.APPROVE_OPTION) {
file = chooser.getSelectedFile();
fileLength = file.length();
setTitle(windowTitle + ": " + file.getAbsolutePath());
int size = Key.getEncryptionKeySize(this, true);
key = Key.getEncryptionKey(this, true, size);
if (key == null) key = defaultKey;
initCipher();
} else System.exit(0);
}
