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使用JAVA-进行维吉尼亚密码的解密与加密-CSDN博客

对上面代码进行改进，并设计了GUI界面

来源于百度百科

维吉尼亚密码_百度百科

运行结果如下：

具体代码：

package com.java.MiMa;import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
/*
明文:ATTACKATDAWN
密钥:LEMONLEMONLE
密文:LXFOPVEFRNHR
解密后:ATTACKATDAWN*/public class WJMYmmGUI extends JFrame {// 常量 26public static final int N = 26;private JTextField plaintextField;private JTextField keyField;private JTextArea ciphertextArea;private JTextArea decryptedtextArea;public WJMYmmGUI() {setTitle("维吉尼亚密码加密解密工具");setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);setSize(400, 300);setLayout(new GridLayout(4, 2, 10, 10));setLocationRelativeTo(null);//设置窗体居中// 明文输入部分JLabel plaintextLabel = new JLabel("请输入需要操作的文字:");plaintextField = new JTextField();add(plaintextLabel);add(plaintextField);// 密钥输入部分JLabel keyLabel = new JLabel("请输入密钥:");keyField = new JTextField();add(keyLabel);add(keyField);// 加密按钮和密文显示部分JButton encryptButton = new JButton("加密");ciphertextArea = new JTextArea();//密文显示ciphertextArea.setEditable(false);//设置不可编辑encryptButton.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {String plaintext = plaintextField.getText().toUpperCase();//读取需要操作的文字,toUpperCase是大写，toLowerCase是小写String key = keyField.getText().toUpperCase();//读取密钥//将待处理文字与密钥去除空格plaintext = plaintext.replace(" ", "").toUpperCase();key = key.replace(" ", "").toUpperCase();if(key.length() != plaintext.length()){//判断密钥长度是否与明文长度相同JOptionPane.showMessageDialog(WJMYmmGUI.this, "密钥长度必须与明文长度相同！", "错误", JOptionPane.ERROR_MESSAGE);return;}String ciphertext = encrypt(plaintext, key);//进行加密ciphertextArea.setText(ciphertext);//设置加密结果显示}});add(encryptButton);add(new JScrollPane(ciphertextArea));// 解密按钮和解密结果显示部分JButton decryptButton = new JButton("解密");decryptedtextArea = new JTextArea();decryptedtextArea.setEditable(false);//设置不可编辑decryptButton.addActionListener(new ActionListener() {@Overridepublic void actionPerformed(ActionEvent e) {String plaintext = plaintextField.getText().toUpperCase();//读取需要操作的文字String key = keyField.getText().toUpperCase();//读取密钥//将待处理文字与密钥去除空格plaintext = plaintext.replace(" ", "").toUpperCase();key = key.replace(" ", "").toUpperCase();if(key.length() != plaintext.length()){//判断密钥长度是否与明文长度相同JOptionPane.showMessageDialog(WJMYmmGUI.this, "密钥长度必须与明文长度相同！", "错误", JOptionPane.ERROR_MESSAGE);return;}String decryptedtext = decrypt(plaintext, key);//进行解密decryptedtextArea.setText(decryptedtext);//设置解密结果显示}});add(decryptButton);add(new JScrollPane(decryptedtextArea));setVisible(true);//设置窗体可见}// 构建加密矩阵private char[][] buildEncryptionMatrix() {String ZM = "abcdefghijklmnopqrstuvwxyz";char[] zm = ZM.toCharArray();char[][] zmb = new char[N][N];for (int i = 0; i < N; i++) {for (int j = 0; j < N; j++) {zmb[i][j] = (char) (zm[j] + i);if (zmb[i][j] >= 'a' && zmb[i][j] <= 'z') {zmb[i][j] = (char) (zmb[i][j] - 32);} else {zmb[i][j] = (char) (zmb[i][j] - N);zmb[i][j] = (char) (zmb[i][j] - 32);}}}return zmb;}// 加密方法private String encrypt(String plaintext, String key) {char[][] zmb = buildEncryptionMatrix();char[] mw = plaintext.toCharArray();char[] k = key.toCharArray();char[] miw = new char[mw.length];for (int i = 0; i < mw.length; i++) {int h = k[i % k.length] - 65;int l = mw[i] - 65;miw[i] = zmb[h][l];}return new String(miw);}// 解密方法private String decrypt(String ciphertext, String key) {char[][] zmb = buildEncryptionMatrix();char[] miw = ciphertext.toCharArray();char[] k = key.toCharArray();char[] jm = new char[miw.length];for (int i = 0; i < miw.length; i++) {int h = k[i % k.length] - 65;for (int j = 0; j < N; j++) {if (zmb[h][j] == miw[i]) {jm[i] = zmb[0][j];break;}}}return new String(jm);}public static void main(String[] args) {new WJMYmmGUI();}
}