Myeclipse序列号破解程序

package com.java.data_type;

import java.io.BufferedReader;

import java.io.IOException;

import java.io.InputStreamReader;

/**

 * MyEclipse破解程序

 * @author YangBaoBao

 *

 */

public class MyeclipseGen {

   private static final String LL = "Decompiling this copyrighted software is a violation of both your license agreement and the Digital Millenium Copyright Act of 1998 (http://www.loc.gov/copyright/legislation/dmca.pdf).
Under section 1204 of the DMCA, penalties range up to a $500,000 fine or up to five years imprisonment for a first offense. Think about it; pay for a license, avoid prosecution, and feel better about yourself.";

   public String getSerial(String userId, String licenseNum) {

      java.util.Calendar cal = java.util.Calendar.getInstance();

      cal.add(1, 3);

      cal.add(6, -1);

      java.text.NumberFormat nf = new java.text.DecimalFormat("000");

      licenseNum = nf.format(Integer.valueOf(licenseNum));

      String verTime = new StringBuilder("-").append(

        new java.text.SimpleDateFormat("yyMMdd").format(cal.getTime()))

        .append("0").toString();

      String type = "YE3MP-";

      String need = new StringBuilder(userId.substring(0, 1)).append(type)

        .append("300").append(licenseNum).append(verTime).toString();

      String dx = new StringBuilder(need).append(LL).append(userId)

        .toString();

      int suf = this.decode(dx);

      String code = new StringBuilder(need).append(String.valueOf(suf))

        .toString();

      return this.change(code);

   }

   private int decode(String s) {

      int i;

      char[] ac;

      int j;

      int k;

      i = 0;

      ac = s.toCharArray();

      j = 0;

      k = ac.length;

      while (j < k) {

       i = (31 * i) + ac[j];

       j++;

      }

      return Math.abs(i);

   }

   private String change(String s) {

      byte[] abyte0;

      char[] ac;

      int i;

      int k;

      int j;

      abyte0 = s.getBytes();

      ac = new char[s.length()];

      i = 0;

      k = abyte0.length;

      while (i < k) {

       j = abyte0[i];

       if ((j >= 48) && (j <= 57)) {

        j = (((j - 48) + 5) % 10) + 48;

       } else if ((j >= 65) && (j <= 90)) {

        j = (((j - 65) + 13) % 26) + 65;

       } else if ((j >= 97) && (j <= 122)) {

        j = (((j - 97) + 13) % 26) + 97;

       }

       ac[i] = (char) j;

       i++;

      }

      return String.valueOf(ac);

   }

   public MyeclipseGen() {

      super();

   }

   public static void main(String[] args) {

      try {

       System.out.println("please input register name:");

       BufferedReader reader = new BufferedReader(new InputStreamReader(

         System.in));

       String userId = null;

       userId = reader.readLine();

       MyeclipseGen myeclipsegen = new MyeclipseGen();

       String res = myeclipsegen.getSerial(userId, "5");

       System.out.println("Serial:" + res);

       reader.readLine();

      } catch (IOException ex) {

      }

   }

   }