使用javafx实现了AES算法“我正在尝试实现”，但是当我编译代码时它没有给我错误，但是当我按下加密按钮时它会在命令行中显示一堆错误
代码如下
import javafx.application.Application;
import javafx.application.Platform;
import javafx.stage.*;
import javafx.scene.*;
import javafx.scene.control.*;
import javafx.scene.layout.*;
import javafx.geometry.*;
import javafx.scene.image.*;
import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;
import java.util.Arrays;
import sun.misc.BASE64Encoder;
import sun.misc.BASE64Decoder;
import java.security.Key;
import javax.crypto.Cipher;
import javax.crypto.Cipher;
import javax.crypto.spec.SecretKeySpec;
public class AESGui extends Application{
TextArea inputArea = new TextArea();
TextArea outputArea = new TextArea();
Main object1 = new Main();
public static void main(String [] args){
launch (args);
}
@Override
public void start(Stage stage){
HBox hbox1 = new HBox(50);
hbox1.setAlignment(Pos.CENTER);
hbox1.getChildren().addAll(inputArea, outputArea);
Button encrypt = new Button("Encrypt");
encrypt.setOnAction (event -> {
object1.aesEncryption();
});
Button decrypt = new Button("Decrypt");
HBox hbox2 = new HBox(50);
hbox2.setAlignment(Pos.CENTER);
hbox2.getChildren().addAll(encrypt, decrypt);
VBox vbox = new VBox();
vbox.setAlignment(Pos.CENTER);
vbox.getChildren().addAll(hbox1, hbox2);
Scene scene = new Scene(vbox, 900, 700);
stage.setScene(scene);
stage.setTitle("aes gui");
stage.show();
}
public class AESAlgorithm{
public String algo = "AES";
public byte[] keyValue;
public AESAlgorithm(String key){
keyValue = key.getBytes();
}
public Key generateKey() throws Exception{
Key key = new SecretKeySpec(keyValue, algo);
return key;
}
public String encrypt(String msg) throws Exception{
Key key = generateKey();
Cipher c = Cipher.getInstance(algo);
c.init(Cipher.ENCRYPT_MODE, key);
byte[] encVal = c.doFinal(msg.getBytes());
String encryptedValue = new BASE64Encoder().encode(encVal);
return encryptedValue;
}
public String decrypt(String msg) throws Exception{
Key key = generateKey();
Cipher c = Cipher.getInstance(algo);
c.init(Cipher.DECRYPT_MODE, key);
byte[] decordedValue = new BASE64Decoder().decodeBuffer(msg);
byte[] decValue = c.doFinal(decordedValue);
String decryptedValue = new String(decValue);
return decryptedValue;
}
}
public class Main {
AESAlgorithm aesAlgo;
private byte[] keyValue = new byte[]{'t','h','e','b','e','s','t','s','e','c','r','e','t','k','e','y'};
public Main(){
//initComponents();
//here we passed key to constructor
aesAlgo = new AESAlgorithm("MySecretKey");
}
private void aesEncryption(){
try{
String plainText = inputArea.getText();
String encryptedText = aesAlgo.encrypt(plainText);
outputArea.setText(encryptedText);
}
catch(Exception e){
e.printStackTrace();
}
}
}
}
当我按下加密按钮时，cmd 的输出是
java.security.InvalidKeyException: Invalid AES key length: 11 bytes
at com.sun.crypto.provider.AESCipher.engineGetKeySize(AESCipher.java:509)
at javax.crypto.Cipher.passCryptoPermCheck(Cipher.java:1067)
at javax.crypto.Cipher.checkCryptoPerm(Cipher.java:1025)
at javax.crypto.Cipher.implInit(Cipher.java:801)
at javax.crypto.Cipher.chooseProvider(Cipher.java:864)
at javax.crypto.Cipher.init(Cipher.java:1249)
at javax.crypto.Cipher.init(Cipher.java:1186)
at AESGui$AESAlgorithm.encrypt(AESGui.java:79)
at AESGui$Main.aesEncryption(AESGui.java:111)
at AESGui$Main.access$000(AESGui.java:98)
at AESGui.lambda$start$0(AESGui.java:42)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:86)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:49)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Node.fireEvent(Node.java:8413)
at javafx.scene.control.Button.fire(Button.java:185)
at com.sun.javafx.scene.control.behavior.ButtonBehavior.mouseReleased(ButtonBehavior.java:182)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:96)
at com.sun.javafx.scene.control.skin.BehaviorSkinBase$1.handle(BehaviorSkinBase.java:89)
at com.sun.javafx.event.CompositeEventHandler$NormalEventHandlerRecord.handleBubblingEvent(CompositeEventHandler.java:218)
at com.sun.javafx.event.CompositeEventHandler.dispatchBubblingEvent(CompositeEventHandler.java:80)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:238)
at com.sun.javafx.event.EventHandlerManager.dispatchBubblingEvent(EventHandlerManager.java:191)
at com.sun.javafx.event.CompositeEventDispatcher.dispatchBubblingEvent(CompositeEventDispatcher.java:59)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:58)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.BasicEventDispatcher.dispatchEvent(BasicEventDispatcher.java:56)
at com.sun.javafx.event.EventDispatchChainImpl.dispatchEvent(EventDispatchChainImpl.java:114)
at com.sun.javafx.event.EventUtil.fireEventImpl(EventUtil.java:74)
at com.sun.javafx.event.EventUtil.fireEvent(EventUtil.java:54)
at javafx.event.Event.fireEvent(Event.java:198)
at javafx.scene.Scene$MouseHandler.process(Scene.java:3757)
at javafx.scene.Scene$MouseHandler.access$1500(Scene.java:3485)
at javafx.scene.Scene.impl_processMouseEvent(Scene.java:1762)
at javafx.scene.Scene$ScenePeerListener.mouseEvent(Scene.java:2494)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:381)
at com.sun.javafx.tk.quantum.GlassViewEventHandler$MouseEventNotification.run(GlassViewEventHandler.java:295)
at java.security.AccessController.doPrivileged(Native Method)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.lambda$handleMouseEvent$354(GlassViewEventHandler.java:417)
at com.sun.javafx.tk.quantum.QuantumToolkit.runWithoutRenderLock(QuantumToolkit.java:389)
at com.sun.javafx.tk.quantum.GlassViewEventHandler.handleMouseEvent(GlassViewEventHandler.java:416)
at com.sun.glass.ui.View.handleMouseEvent(View.java:555)
at com.sun.glass.ui.View.notifyMouse(View.java:937)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$null$148(WinApplication.java:191)
at java.lang.Thread.run(Unknown Source)
最佳答案
您的 key 太短。 AES 适用于 128 位、192 位和 256 位 key 。
您已经定义了keyValue，它是一个 16 字节数组(16*8 = 128 位)。请改用它。
public class Main {
AESAlgorithm aesAlgo;
private byte[] keyValue = new byte[]{'t','h','e','b','e','s','t','s','e','c','r','e','t','k','e','y'};
public Main(){
//initComponents();
//here we passed key to constructor
aesAlgo = new AESAlgorithm(keyValue);
}
private void aesEncryption(){
try{
String plainText = inputArea.getText();
String encryptedText = aesAlgo.encrypt(plainText);
outputArea.setText(encryptedText);
}
catch(Exception e){
e.printStackTrace();
}
}
}
关于java - AES javafx 程序在按下加密按钮时显示错误，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/44294039/