Diffle-Human密钥交换（信息安全）--java版本 - 爬虫家

package hao.ning;

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.ObjectInputStream;
import java.io.ObjectOutputStream;
import java.math.BigInteger;
import java.security.InvalidAlgorithmParameterException;
import java.security.KeyPair;
import java.security.KeyPairGenerator;
import java.security.NoSuchAlgorithmException;
import java.security.PrivateKey;
import java.security.PublicKey;

import javax.crypto.KeyAgreement;
import javax.crypto.spec.DHParameterSpec;
import javax.crypto.spec.SecretKeySpec;

public class Key_DH {

  private final static byte skip1024ModulusBytes[]={          (byte)0xF4, (byte)0x88, (byte)0xFD, (byte)0x58,(byte)0x4E, (byte)0x49, (byte)0xDB, (byte)0xCD,(byte)0x20, (byte)0xB4, (byte)0x9D, (byte)0xE4,(byte)0x91, (byte)0x07, (byte)0x36, (byte)0x6B,(byte)0x33, (byte)0x6C, (byte)0x38, (byte)0x0D,(byte)0x45, (byte)0x1D, (byte)0x0F, (byte)0x7C,(byte)0x88, (byte)0xB3, (byte)0x1C, (byte)0x7C,(byte)0x5B, (byte)0x2D, (byte)0x8E, (byte)0xF6,(byte)0xF3, (byte)0xC9, (byte)0x23, (byte)0xC0,(byte)0x43, (byte)0xF0, (byte)0xA5, (byte)0x5B,(byte)0x18, (byte)0x8D, (byte)0x8E, (byte)0xBB,(byte)0x55, (byte)0x8C, (byte)0xB8, (byte)0x5D,(byte)0x38, (byte)0xD3, (byte)0x34, (byte)0xFD,(byte)0x7C, (byte)0x17, (byte)0x57, (byte)0x43,(byte)0xA3, (byte)0x1D, (byte)0x18, (byte)0x6C,(byte)0xDE, (byte)0x33, (byte)0x21, (byte)0x2C,(byte)0xB5, (byte)0x2A, (byte)0xFF, (byte)0x3C,(byte)0xE1, (byte)0xB1, (byte)0x29, (byte)0x40,(byte)0x18, (byte)0x11, (byte)0x8D, (byte)0x7C,(byte)0x84, (byte)0xA7, (byte)0x0A, (byte)0x72,(byte)0xD6, (byte)0x86, (byte)0xC4, (byte)0x03,(byte)0x19, (byte)0xC8, (byte)0x07, (byte)0x29,(byte)0x7A, (byte)0xCA, (byte)0x95, (byte)0x0C,(byte)0xD9, (byte)0x96, (byte)0x9F, (byte)0xAB,(byte)0xD0, (byte)0x0A, (byte)0x50, (byte)0x9B,(byte)0x02, (byte)0x46, (byte)0xD3, (byte)0x08,(byte)0x3D, (byte)0x66, (byte)0xA4, (byte)0x5D,(byte)0x41, (byte)0x9F, (byte)0x9C, (byte)0x7C,(byte)0xBD, (byte)0x89, (byte)0x4B, (byte)0x22,(byte)0x19, (byte)0x26, (byte)0xBA, (byte)0xAB,(byte)0xA2, (byte)0x5E, (byte)0xC3, (byte)0x55,(byte)0xE9, (byte)0x2F, (byte)0x78, (byte)0xC7  };  

// The skip 1024 bit modulus

   /*转载请注明：www.panmum.com*/  private static final BigInteger skip1024Modulus=new BigInteger(1,skip1024ModulusBytes);  private static final BigInteger skip1024Base=BigInteger.valueOf(2);    DHParameterSpec DHP=new DHParameterSpec(skip1024Modulus,skip1024Base);  byte []sb;    public void makeKey(){    KeyPairGenerator kpg = null;    try {        kpg = KeyPairGenerator.getInstance("DH");    }     catch (NoSuchAlgorithmException e1) {    e1.printStackTrace();    }      try {        kpg.initialize(DHP);//初始化"DH",为其指定参数    }     catch (InvalidAlgorithmParameterException e) {    e.printStackTrace();    }     KeyPair kp=kpg.generateKeyPair();     PublicKey pbk=kp.getPublic();     PrivateKey prk=kp.getPrivate();         try {        FileOutputStream f1 = new FileOutputStream("pbk.dat");        ObjectOutputStream out1 = null;    try {out1 = new ObjectOutputStream(f1);        }         catch (IOException e) {e.printStackTrace();        }        try {out1.writeObject(pbk);        }         catch (IOException e) {e.printStackTrace();        }    }     /*转载请注明：www.tengxunyun.me*/    catch (FileNotFoundException e) {        e.printStackTrace();    }        try {        FileOutputStream f2= new FileOutputStream("prk.dat");        ObjectOutputStream out2 = null;    try {out2 = new ObjectOutputStream(f2);        }         catch (IOException e) {e.printStackTrace();        }        try {out2.writeObject(prk);        }         catch (IOException e) {e.printStackTrace();        }    }         catch (FileNotFoundException e) {        e.printStackTrace();    }}  public void shareKey(){    PublicKey pbk=null;    PrivateKey prk = null;    try {        FileInputStream f1= new FileInputStream("pbk.dat");        ObjectInputStream in1 = null;    try {in1 = new ObjectInputStream(f1);        }         catch (IOException e) {e.printStackTrace();        }        /*转载请注明：www.quzhuanpan.com*/        try {try {    pbk=(PublicKey)in1.readObject();}catch (ClassNotFoundException e) {        e.printStackTrace();}        }         catch (IOException e) {e.printStackTrace();        }    }     catch (FileNotFoundException e) {        e.printStackTrace();    }        try {        FileInputStream f2= new FileInputStream("prk.dat");        ObjectInputStream in2 = null;    try {in2 = new ObjectInputStream(f2);        }         catch (IOException e) {e.printStackTrace();        }        try {try {    prk=(PrivateKey)in2.readObject();}catch (ClassNotFoundException e) {        e.printStackTrace();}        }         catch (IOException e) {e.printStackTrace();        }    }     catch (FileNotFoundException e) {        e.printStackTrace();    }        try {        KeyAgreement ka=KeyAgreement.getInstance("DH");        ka.init(prk);//用自己的私钥初始化秘药协定对象        ka.doPhase(pbk, true);        sb=ka.generateSecret();        SecretKeySpec k=new SecretKeySpec(sb,"DESede");    }     catch (Exception e) {    e.printStackTrace();    }}public void printShareInformation(){    System.out.println("Share Information:");    for(int i=0;i<sb.length;i++){        System.out.print(sb[i]+",");    }}    

}

package hao.ning;

public class Main {

public static void main(String args[]){    Key_DH k_dh=new Key_DH();    k_dh.makeKey();    k_dh.shareKey();    k_dh.printShareInformation();}

}