testdes.java

对称和非对称加密

package com.dmgc.security.cipher.symmetic.des.test;

import com.dmgc.security.cipher.symmetic.des.*;

/**
 * <p>Title: DMGC SECURITY CIPHER LIB</p>
 * <p>Description: 上海信宁科技有限公司 安全密码库(JAVA version)</p>
 * <p>Copyright: Copyright (c) 2003</p>
 * <p>Company: 上海信宁科技有限公司</p>
 * 用于测试
 * @author 陆荣幸  周渊   潘勇
 * @version 1.0
 */

public class TestDES {

  private void testDESFile() {
    long starttime, endtime;
    String key1 = null;

    System.out.println("测试DES密钥生成");
    starttime = System.currentTimeMillis();
    System.out.println("开始时间 " + starttime);
    //
    DESKeyGenerator k0 = new DESKeyGenerator();
    byte[] key0 = k0.getDESKey();

    try {
      key1 = k0.ByteToHexString(key0);
    }
    catch (InvalidDESKeyException ex) {
      ex.printStackTrace();
    }
    System.out.println("密钥为: ");
    System.out.println(key1);
    //
    endtime = System.currentTimeMillis();
    System.out.println("结束时间 " + endtime);
    System.out.println("总共时间为 " + (endtime - starttime));

    //
    //
    String srcfile = "d:\\test.pdf";
    String desfile = "d:\\test.pdf.cip";
    String desscrfile = "d:\\test.copy.pdf";

    String desfile2 = "d:\\test.pdf2.cip";
    String desscrfile2 = "d:\\test.copy2.pdf";
    //
    System.out.println("测试DES加密");
    starttime = System.currentTimeMillis();
    System.out.println("开始时间 " + starttime);
    DESAlgorithm a0 = new DESAlgorithm();
    try {
      a0.Encrypt(srcfile, desfile, key1);
    }
    catch (Exception ex1) {
      ex1.printStackTrace();
    }
    endtime = System.currentTimeMillis();
    System.out.println("结束时间 " + endtime);
    System.out.println("总共时间为 " + (endtime - starttime));
    //
    System.out.println("测试DES解密");
    starttime = System.currentTimeMillis();
    System.out.println("开始时间 " + starttime);

    try {
      a0.Decrypt(desfile, desscrfile, key1);
    }
    catch (Exception ex1) {
      ex1.printStackTrace();
    }
    endtime = System.currentTimeMillis();
    System.out.println("结束时间 " + endtime);
    System.out.println("总共时间为 " + (endtime - starttime));
    //

    ///
    //
   System.out.println("测试概率DES解密");
   starttime = System.currentTimeMillis();
   System.out.println("开始时间 " + starttime);
   DESProbabilityAlgorithm a1 = new DESProbabilityAlgorithm();
   try {
     a1.Encrypt(srcfile, desfile2, key1);
   }
   catch (Exception ex1) {
     ex1.printStackTrace();
   }
   endtime = System.currentTimeMillis();
   System.out.println("结束时间 " + endtime);
   System.out.println("总共时间为 " + (endtime - starttime));
   //
   System.out.println("测试概率DES解密");
   starttime = System.currentTimeMillis();
   System.out.println("开始时间 " + starttime);

   try {
     a1.Decrypt(desfile2, desscrfile2, key1);
   }
   catch (Exception ex1) {
     ex1.printStackTrace();
   }
   endtime = System.currentTimeMillis();
   System.out.println("结束时间 " + endtime);
   System.out.println("总共时间为 " + (endtime - starttime));
   //


  }

  ////////////////////////////////////////////////////////////////////////////
  public TestDES() {
    testDESFile();
  }

  public static void main(String[] args) {
    TestDES testDES1 = new TestDES();
  }

}