intellij idea 13注册key生成代码

package org.geksong.idea13keygen;
/******************************
 * Create Time: 2013-12-24 下午5:39:54<br>
 * Author: zs.zeng<br>
 * File name: ProductType.java <br>
 * Version: 1.0<br>
 * Function: <br>
 * Modify Time: 2013-12-24 下午5:39:54<br>
 * Change Log:<br>
 ******************************************/
public enum ProductType {
IDEA(1);

  private int id;

  private ProductType(int id) {
    this.id = id;
  }

  public int id() {
    return this.id;
  }

  public static ProductType getProductType(String str) {
    for (ProductType product : values())
      if (product.toString().equalsIgnoreCase(str))
        return product;
    return null;
  }
}

package org.geksong.idea13keygen;

import java.math.BigInteger;
import java.util.Date;
import java.util.Random;
import java.util.zip.CRC32;

/******************************
 * Create Time: 2013-12-24 下午5:36:56<br>
 * Author: zs.zeng<br>
 * File name: Idea13KeyGen.java <br>
 * Version: 1.0<br>
 * Function: intellij 13注册码生成器<br>
 * Modify Time: 2013-12-24 下午5:36:56<br>
 * Change Log:<br>
 ******************************************/
 public class Idea13KeyGen {
  public static short getCRC(String s, int i, byte[] bytes)
  {
    CRC32 crc32 = new CRC32();
    if (s != null) {
      for (int j = 0; j < s.length(); j++) {
        char c = s.charAt(j);
        crc32.update(c);
      }
    }
    crc32.update(i);
    crc32.update(i >> 8);
    crc32.update(i >> 16);
    crc32.update(i >> 24);
    for (int k = 0; k < bytes.length - 2; k++) {
      byte byte0 = bytes[k];
      crc32.update(byte0);
    }
    return (short)(int)crc32.getValue();
  }

  public static String encodeGroups(BigInteger biginteger)
  {
    BigInteger beginner1 = BigInteger.valueOf(60466176L);
    StringBuilder sb = new StringBuilder();
    for (int i = 0; biginteger.compareTo(BigInteger.ZERO) != 0; i++) {
      int j = biginteger.mod(beginner1).intValue();
      String s1 = encodeGroup(j);
      if (i > 0) {
        sb.append("-");
      }
      sb.append(s1);
      biginteger = biginteger.divide(beginner1);
    }
    return sb.toString();
  }

  public static String encodeGroup(int i)
  {
    StringBuilder sb = new StringBuilder();
    for (int j = 0; j < 5; j++) {
      int k = i % 36;
      char c;
      if (k < 10)
        c = (char)(48 + k);
      else {
        c = (char)(65 + k - 10);
      }
      sb.append(c);
      i /= 36;
    }
    return sb.toString();
  }

  public static String MakeKey(String name, int days, int id, ProductType prtype)
  {
    id %= 10000;
    byte[] bkey = new byte[12];
    bkey[0] = ((byte)prtype.id());
    bkey[1] = 13;

    Date d = new Date();
    long ld = d.getTime() >> 16;
    bkey[2] = ((byte)(int)(ld & 0xFF));
    bkey[3] = ((byte)(int)(ld >> 8 & 0xFF));
    bkey[4] = ((byte)(int)(ld >> 16 & 0xFF));
    bkey[5] = ((byte)(int)(ld >> 24 & 0xFF));

    days &= 65535;
    bkey[6] = ((byte)(days & 0xFF));
    bkey[7] = ((byte)(days >> 8 & 0xFF));

    bkey[8] = 105;
    bkey[9] = -59;
    bkey[10] = 0;
    bkey[11] = 0;

    int w = getCRC(name, id % 10000, bkey);
    bkey[10] = ((byte)(w & 0xFF));
    bkey[11] = ((byte)(w >> 8 & 0xFF));

    BigInteger pow = new BigInteger("89126272330128007543578052027888001981", 10);
    BigInteger mod = new BigInteger("86f71688cdd2612ca117d1f54bdae029", 16);
    BigInteger k0 = new BigInteger(bkey);
    BigInteger k1 = k0.modPow(pow, mod);
    String s0 = Integer.toString(id);
    String sz = "0";
    while (s0.length() != 5) {
      s0 = sz.concat(s0);
    }
    s0 = s0.concat("-");

    String s1 = encodeGroups(k1);
    s0 = s0.concat(s1);
    return s0;
  }

  public static void main(String[] args) {
      Random random = new Random();
      String key = MakeKey("geksong", 0, random.nextInt(1000), ProductType.getProductType("IDEA"));
      System.out.println(key);
  }
}