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);

  }

}

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