generateur de mdp en java #188
Description
// Fichier: PasswordGeneratorGUI.java
import javax.swing.;
import java.awt.;
import java.awt.datatransfer.;
import java.awt.event.;
import java.security.SecureRandom;
import java.util.*;
public class PasswordGeneratorGUI extends JFrame {
private static final String LOWER = "abcdefghijklmnopqrstuvwxyz";
private static final String UPPER = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
private static final String DIGIT = "0123456789";
private static final String SYMBOL = "!@#$%^&*;
private static final Set<Character> SIMILAR = new HashSet<>(Arrays.asList(
'0','O','o','1','l','I','|','5','S','2','Z','8','B'
));
private static final SecureRandom RNG = new SecureRandom();
// UI components
private JTextField outputField;
private JSlider lengthSlider;
private JCheckBox lowerBox, upperBox, digitBox, symbolBox, excludeSimilarBox, requireEachBox;
private JLabel entropyLabel, strengthLabel;
public PasswordGeneratorGUI() {
super("🔐 Générateur de mots de passe");
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setSize(500, 300);
setLayout(new BorderLayout(10,10));
// Top output
JPanel top = new JPanel(new BorderLayout(5,5));
outputField = new JTextField();
outputField.setFont(new Font("Monospaced", Font.PLAIN, 16));
top.add(outputField, BorderLayout.CENTER);
JButton copyBtn = new JButton("Copier");
copyBtn.addActionListener(e -> copyToClipboard());
top.add(copyBtn, BorderLayout.EAST);
add(top, BorderLayout.NORTH);
// Center controls
JPanel center = new JPanel();
center.setLayout(new GridLayout(0,2));
lowerBox = new JCheckBox("Minuscules (a-z)", true);
upperBox = new JCheckBox("Majuscules (A-Z)", true);
digitBox = new JCheckBox("Chiffres (0-9)", true);
symbolBox = new JCheckBox("Symboles (!@#…)", true);
excludeSimilarBox = new JCheckBox("Exclure caractères ambigus (0,O,1,l...)", true);
requireEachBox = new JCheckBox("Exiger ≥1 caractère de chaque catégorie", true);
center.add(lowerBox);
center.add(upperBox);
center.add(digitBox);
center.add(symbolBox);
center.add(excludeSimilarBox);
center.add(requireEachBox);
add(center, BorderLayout.CENTER);
// Bottom panel
JPanel bottom = new JPanel(new BorderLayout(5,5));
lengthSlider = new JSlider(8, 64, 16);
lengthSlider.setMajorTickSpacing(14);
lengthSlider.setMinorTickSpacing(2);
lengthSlider.setPaintTicks(true);
lengthSlider.setPaintLabels(true);
bottom.add(new JLabel("Longueur :"), BorderLayout.WEST);
bottom.add(lengthSlider, BorderLayout.CENTER);
JButton genBtn = new JButton("Générer");
genBtn.addActionListener(e -> generatePassword());
bottom.add(genBtn, BorderLayout.EAST);
add(bottom, BorderLayout.SOUTH);
// Status panel
JPanel status = new JPanel(new GridLayout(2,1));
entropyLabel = new JLabel("Entropie : -- bits");
strengthLabel = new JLabel("Robustesse : --");
status.add(entropyLabel);
status.add(strengthLabel);
add(status, BorderLayout.WEST);
setLocationRelativeTo(null); // center window
setVisible(true);
}
private void copyToClipboard() {
String text = outputField.getText();
if (text.isEmpty()) return;
Toolkit.getDefaultToolkit()
.getSystemClipboard()
.setContents(new StringSelection(text), null);
JOptionPane.showMessageDialog(this, "Mot de passe copié !");
}
private void generatePassword() {
int length = lengthSlider.getValue();
java.util.List<String> sets = new ArrayList<>();
if (lowerBox.isSelected()) sets.add(LOWER);
if (upperBox.isSelected()) sets.add(UPPER);
if (digitBox.isSelected()) sets.add(DIGIT);
if (symbolBox.isSelected()) sets.add(SYMBOL);
String pool = combineAndFilter(sets, excludeSimilarBox.isSelected());
if (pool.isEmpty()) {
JOptionPane.showMessageDialog(this, "Aucun jeu de caractères disponible !");
return;
}
String pwd = requireEachBox.isSelected()
? generateWithRequirement(length, sets, pool, excludeSimilarBox.isSelected())
: randomFromPool(pool, length);
outputField.setText(pwd);
// update entropy
int uniqueChars = (int) pool.chars().distinct().count();
double entropyBits = length * (Math.log(uniqueChars)/Math.log(2));
String strength = strengthLabel(entropyBits);
entropyLabel.setText(String.format("Entropie : ~%.0f bits", entropyBits));
strengthLabel.setText("Robustesse : " + strength);
}
private String combineAndFilter(java.util.List<String> sets, boolean excludeSimilar) {
StringBuilder sb = new StringBuilder();
for (String s : sets) sb.append(s);
StringBuilder out = new StringBuilder();
for (char c : sb.toString().toCharArray()) {
if (excludeSimilar && SIMILAR.contains(c)) continue;
out.append(c);
}
return out.toString();
}
private String generateWithRequirement(int length, java.util.List<String> sets, String pool, boolean excludeSimilar) {
java.util.List<Character> chars = new ArrayList<>();
for (String s : sets) {
String filtered = combineAndFilter(Collections.singletonList(s), excludeSimilar);
if (!filtered.isEmpty()) {
chars.add(filtered.charAt(RNG.nextInt(filtered.length())));
}
}
for (int i = chars.size(); i < length; i++) {
chars.add(pool.charAt(RNG.nextInt(pool.length())));
}
// shuffle
Collections.shuffle(chars, RNG);
StringBuilder sb = new StringBuilder();
for (char c : chars) sb.append(c);
return sb.toString();
}
private String randomFromPool(String pool, int length) {
StringBuilder sb = new StringBuilder(length);
for (int i = 0; i < length; i++) {
sb.append(pool.charAt(RNG.nextInt(pool.length())));
}
return sb.toString();
}
private String strengthLabel(double bits) {
if (bits < 28) return "Très faible";
if (bits < 36) return "Faible";
if (bits < 60) return "Correct";
if (bits < 128) return "Fort";
return "Très fort";
}
public static void main(String[] args) {
SwingUtilities.invokeLater(PasswordGeneratorGUI::new);
}
}