最近线上的环境对敏感字段(手机号、银行卡号等)统一进行了加密处理，当我们查问题的时候，就犯了难，上游加密规则和项目加密规则还有区别，想着周末抽空做个上游系统RSA加解密的工具。
本来想做一个网页版本的，但还需要部署服务。有没有更加简单的方式。想到了一个Java的swing(一个古老的东西)。决定了那就开始动手吧!
- 新建项目，引入加解密Util
import sun.misc.BASE64Decoder;
import sun.misc.BASE64Encoder;
import javax.crypto.Cipher;
import java.io.IOException;
import java.security.KeyFactory;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.PublicKey;
import java.security.interfaces.RSAPrivateKey;
import java.security.interfaces.RSAPublicKey;
import java.security.spec.InvalidKeySpecException;
import java.security.spec.PKCS8EncodedKeySpec;
import java.security.spec.X509EncodedKeySpec;
/**
* RSA加解密工具类
*
* @author tao
*/
public class RsaUtils { public static PublicKey getPublicKey(String pubKey) throws IOException, NoSuchAlgorithmException, InvalidKeySpecException {
byte[] keyBytes = new BASE64Decoder().decodeBuffer(pubKey);
X509EncodedKeySpec spec = new X509EncodedKeySpec(keyBytes);
KeyFactory kf = KeyFactory.getInstance("RSA");
return kf.generatePublic(spec);
}
public static PrivateKey getPrivateKey(String prikey) throws IOException, NoSuchAlgorithmException, InvalidKeySpecException {
byte[] keyBytes = new BASE64Decoder().decodeBuffer(prikey);
PKCS8EncodedKeySpec spec = new PKCS8EncodedKeySpec(keyBytes);
KeyFactory kf = KeyFactory.getInstance("RSA");
return kf.generatePrivate(spec);
}
/**
* 加密
*
* @param attr
* @return
*/
public static String RSAEncode(String attr, String pubilcKey) {
String result = "";
try {
Cipher cipher = Cipher.getInstance("RSA");
RSAPublicKey pubKey = (RSAPublicKey) getPublicKey(pubilcKey);
cipher.init(1, pubKey);
byte[] cipherText = cipher.doFinal(attr.getBytes());
result = new BASE64Encoder().encode(cipherText);
} catch (Exception e1) {
//失败返回原值
return attr;
}
return result;
}
/**
* 解密
*
* @param attr
* @return
*/
public static String RSADecode(String attr, String privateKey) {
String result = "";
try {
Cipher cipher = Cipher.getInstance("RSA");
RSAPrivateKey privKey = (RSAPrivateKey) getPrivateKey(privateKey);
cipher.init(2, privKey);
byte[] plainText = cipher.doFinal(new BASE64Decoder().decodeBuffer(attr));
result = new String(plainText);
} catch (Exception e1) {
//失败返回原值
return attr;
}
return result;
}}- 绘制swing解密，调试
```java
import javax.swing.*;
import java.awt.*;
import java.awt.datatransfer.Clipboard;
import java.awt.datatransfer.StringSelection;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.KeyAdapter;
import java.awt.event.KeyEvent;
/**
* @author Tao
* @Classname mySwing
* @Description 我的Swing
* @Date 2024/3/9
*/
public class MyFrame extends JFrame {
public static void main(String[] args) {
MyFrame myFrame = new MyFrame();
}
private static JTextArea publicKeyTextArea;
private static JTextArea privateKeyTextArea;
private static JTextArea plaintextTextArea;
private static JTextArea ciphertextTextArea;
public MyFrame() {
JFrame frame = new JFrame("RSA Tool");
frame.setSize(600, 400);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// 获取屏幕尺寸
Dimension screenSize = Toolkit.getDefaultToolkit().getScreenSize();
int centerX = (int) ((screenSize.getWidth() - frame.getWidth()) / 2);
int centerY = (int) ((screenSize.getHeight() - frame.getHeight()) / 2);
// 设置窗口位置为屏幕中心
frame.setLocation(centerX, centerY);
JPanel panel = new JPanel();
frame.add(panel);
placeComponents(panel);
frame.setVisible(true);
}
private static void placeComponents(JPanel panel) {
panel.setLayout(null);
JLabel publicKeyLabel = new JLabel("公钥:");
publicKeyLabel.setBounds(10, 20, 80, 25);
panel.add(publicKeyLabel);
publicKeyTextArea = new JTextArea();
publicKeyTextArea.setBounds(100, 20, 450, 50);
publicKeyTextArea.setLineWrap(true);
publicKeyTextArea.setWrapStyleWord(true);
panel.add(publicKeyTextArea);
JLabel privateKeyLabel = new JLabel("私钥:");
privateKeyLabel.setBounds(10, 80, 80, 25);
panel.add(privateKeyLabel);
privateKeyTextArea = new JTextArea();
privateKeyTextArea.setBounds(100, 80, 450, 50);
privateKeyTextArea.setLineWrap(true);
privateKeyTextArea.setWrapStyleWord(true);
panel.add(privateKeyTextArea);
JLabel plaintextLabel = new JLabel("加解密字段:");
plaintextLabel.setBounds(10, 140, 80, 25);
panel.add(plaintextLabel);
plaintextTextArea = new JTextArea();
plaintextTextArea.setBounds(100, 140, 450, 50);
plaintextTextArea.setLineWrap(true);
plaintextTextArea.setWrapStyleWord(true);
panel.add(plaintextTextArea);
JButton encryptButton = new JButton("加密");
encryptButton.setBounds(10, 200, 80, 25);
panel.add(encryptButton);
JButton decryptButton = new JButton("解密");
decryptButton.setBounds(100, 200, 80, 25);
panel.add(decryptButton);
ciphertextTextArea = new JTextArea();
ciphertextTextArea.setBounds(10, 250, 360, 50);
panel.add(ciphertextTextArea);
JButton copyButton = new JButton("Copy");
copyButton.setBounds(400, 250, 80, 25);
panel.add(copyButton);
publicKeyTextArea.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.isControlDown() && e.getKeyCode() == KeyEvent.VK_C) {
String selectedText = publicKeyTextArea.getSelectedText();
if (selectedText != null && !selectedText.isEmpty()) {
Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
StringSelection selection = new StringSelection(selectedText);
clipboard.setContents(selection, null);
}
}
}
});
plaintextTextArea.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.isControlDown() && e.getKeyCode() == KeyEvent.VK_C) {
String selectedText = plaintextTextArea.getSelectedText();
if (selectedText != null && !selectedText.isEmpty()) {
Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
StringSelection selection = new StringSelection(selectedText);
clipboard.setContents(selection, null);
}
}
}
});
privateKeyTextArea.addKeyListener(new KeyAdapter() {
@Override
public void keyPressed(KeyEvent e) {
if (e.isControlDown() && e.getKeyCode() == KeyEvent.VK_C) {
String selectedText = privateKeyTextArea.getSelectedText();
if (selectedText != null && !selectedText.isEmpty()) {
Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
StringSelection selection = new StringSelection(selectedText);
clipboard.setContents(selection, null);
}
}
}
});
// 绑定复制按钮点击事件
copyButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
String decryptedString = ciphertextTextArea.getText();
StringSelection stringSelection = new StringSelection(decryptedString);
Clipboard clipboard = Toolkit.getDefaultToolkit().getSystemClipboard();
clipboard.setContents(stringSelection, null);
JOptionPane.showMessageDialog(panel, "Text copied to clipboard.");
}
});
encryptButton.addActionListener(e -> {
try {
String publicKeyStr = publicKeyTextArea.getText();
String plaintext = plaintextTextArea.getText();
String encryptedString = RsaUtils.RSAEncode(plaintext,publicKeyStr);
ciphertextTextArea.setText(encryptedString);
} catch (Exception ex) {
ex.printStackTrace();
}
});
decryptButton.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent e) {
try {
String privateKeyStr = privateKeyTextArea.getText();
String ciphertext = plaintextTextArea.getText();
String decryptedString = RsaUtils.RSADecode(ciphertext,privateKeyStr);
ciphertextTextArea.setText(decryptedString);
} catch (Exception ex) {
ex.printStackTrace();
}
}
});
}
}3 展示画面
4 打包
参考以下链接：https://blog.csdn.net/yuang12345/article/details/90293013/
