skey_rsa.java

使用RSA对文件进行加解密

import java.io.*;
import java.security.*;
import javax.crypto.*;
import javax.crypto.spec.*;


public class Skey_RSA{
   public static void main(String args[]) throws Exception{
        KeyPairGenerator kpg=KeyPairGenerator.getInstance("RSA");
        kpg.initialize(1024);
        KeyPair kp=kpg.genKeyPair();
        PublicKey pbkey=kp.getPublic();
        PrivateKey prkey=kp.getPrivate();
        
        FileOutputStream  f1=new FileOutputStream("Skey_RSA_pub.dat");
        ObjectOutputStream b1=new  ObjectOutputStream(f1);
	b1.writeObject(pbkey);

        FileOutputStream  f2=new FileOutputStream("Skey_RSA_priv.dat");
        ObjectOutputStream b2=new  ObjectOutputStream(f2);
	b2.writeObject(prkey);


   }
}