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ObjectInputStream上的java.io.StreamCorruptedException,同时将它封装在Java中的CipherInputStream中

java 来源:gg_14 9次浏览

我通过套接字(单个客户端单个服务器)发送加密对象。客户端将加密对象作为密封对象发送,服务器将对象解密。但是在服务器端创建ObjectInputStream的过程中,它抛出了StreamCorruptedException异常。 我在网上搜了很多,我的代码看起来很好,但我不知道为什么抛出异常。ObjectInputStream上的java.io.StreamCorruptedException,同时将它封装在Java中的CipherInputStream中

这里是Client类:

package sample; 

import javax.crypto.Cipher; 
import javax.crypto.CipherOutputStream; 
import javax.crypto.SealedObject; 
import javax.crypto.spec.SecretKeySpec; 
import java.io.ObjectOutputStream; 
import java.net.Socket; 

public class Client { 
    private static Socket socket; 
    public static void main(String args[]) throws Exception { 
     socket=new Socket("127.0.0.1",7777); 
     Cipher cipher=Cipher.getInstance("AES/ECB/PKCS5Padding"); 
     SecretKeySpec sks = new SecretKeySpec("MyDifficultPassw".getBytes(), "AES"); 
     cipher.init(Cipher.ENCRYPT_MODE, sks); 
     CipherOutputStream cos=new CipherOutputStream(socket.getOutputStream(),cipher); 
     ObjectOutputStream oos=new ObjectOutputStream(cos); 
     oos.flush(); 
     SealedObject sealedObject=new SealedObject("SampleString",cipher); 
     oos.writeObject(sealedObject); 
    } 
} 

这里是我的服务器类:

package sample; 

import javax.crypto.Cipher; 
import javax.crypto.CipherInputStream; 
import javax.crypto.CipherOutputStream; 
import javax.crypto.SealedObject; 
import javax.crypto.spec.SecretKeySpec; 
import java.io.ObjectInputStream; 
import java.io.ObjectOutputStream; 
import java.net.ServerSocket; 
import java.net.Socket; 

public class Server { 
    private static ServerSocket serverSocket; 
    public static SecretKeySpec sks; 
    public static void main(String args[]) throws Exception{ 
     serverSocket=new ServerSocket(7777); 
     Socket clientSocket=serverSocket.accept(); 
     Cipher cipher=Cipher.getInstance("AES/ECB/PKCS5Padding"); 
     sks = new SecretKeySpec("MyDifficultPassw".getBytes(), "AES"); 
     cipher.init(Cipher.DECRYPT_MODE, sks); 
     CipherInputStream cis=new CipherInputStream(clientSocket.getInputStream(),cipher); 
     ObjectInputStream ois=new ObjectInputStream(cis); //line 23 
     SealedObject so=(SealedObject) ois.readObject(); 
     System.out.println((String)so.getObject(cipher)); 
    } 
} 

及以下异常被抛出就当客户端连接服务器端:

Exception in thread "main" java.io.StreamCorruptedException: invalid stream header: 73720019 
at java.io.ObjectInputStream.readStreamHeader(ObjectInputStream.java:857) 
at java.io.ObjectInputStream.<init>(ObjectInputStream.java:349) 
at sample.Server.main(Server.java:23) 


===========解决方案如下:

问题是双重加密。输出案例中的密码必须密封对象,然后对流进行加密,但输入案例中的密码对象必须解密流,然后开封对象,这是相反的顺序。

删除SealedObject或密码流。


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