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  1. import java.io.PrintStream;
  2. import java.math.BigInteger;
  3. import java.util.Date;
  4. import java.util.Random;
  5. import java.util.Scanner;
  6. import java.util.zip.CRC32;
  7.  
  8. public class Main {
  9.  
  10.     public static final byte PRODUCT_TYPE = 1; //IntelliJ IDEA
  11.     public static final byte PRODUCT_VERSION = 14;
  12.     public static final String DEFUALT_NAME = "IntelliJ IDEA";
  13.  
  14.     public static final Random rnd = new Random();
  15.     public static final char[] encodeTable = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ".toCharArray();
  16.  
  17.     public static final BigInteger pow = new BigInteger("89126272330128007543578052027888001981", 10);
  18.     public static final BigInteger mod = new BigInteger("86f71688cdd2612ca117d1f54bdae029", 16);
  19.  
  20.     public static final BigInteger baseChunk = BigInteger.valueOf(0x39aa400L);
  21.     public static final int baseDigit = encodeTable.length;
  22.  
  23.     public static final Scanner in = new Scanner(System.in);
  24.     public static final PrintStream out = System.out;
  25.  
  26.     public static byte[] writeSignature(char[] name, int salt, byte[] bkey) {
  27.         CRC32 crc32 = new CRC32();
  28.  
  29.         for (char chr : name) {
  30.             crc32.update(chr);
  31.         }
  32.  
  33.         crc32.update(salt);
  34.         crc32.update(salt >> 8);
  35.         crc32.update(salt >> 16);
  36.         crc32.update(salt >> 24);
  37.  
  38.         for (int i = 0; i < bkey.length - 2; i++) {
  39.             crc32.update(bkey[i]);
  40.         }
  41.  
  42.         short sign = (short) crc32.getValue();
  43.  
  44.         bkey[10] = (byte) (sign & 255);
  45.         bkey[11] = (byte) ((sign >> 8) & 255);
  46.  
  47.         return bkey;
  48.     }
  49.  
  50.  
  51.     public static String keyToString(BigInteger key) {
  52.         StringBuilder builder = new StringBuilder();
  53.  
  54.         for (int i = 0; key.compareTo(BigInteger.ZERO) != 0; i++) {
  55.             if (i > 0) {
  56.                 builder.append("-");
  57.             }
  58.  
  59.             int num = key.mod(baseChunk).intValue();
  60.  
  61.             for (int j = 0; j < 5; j++, num /= baseDigit) {
  62.                 builder.append(encodeTable[num % baseDigit]);
  63.             }
  64.  
  65.             key = key.divide(baseChunk);
  66.         }
  67.  
  68.         return builder.toString();
  69.     }
  70.  
  71.  
  72.     public static String generateKey(String name, int days) {
  73.         int salt = rnd.nextInt(100000);
  74.         int ld = (int) (new Date().getTime() >> 16);
  75.  
  76.         salt %= 100000;
  77.         days &= 0xffff;
  78.  
  79.         byte[] bkey = { //size 12
  80.                 PRODUCT_TYPE,
  81.                 PRODUCT_VERSION,
  82.  
  83.                 (byte) (ld & 0xff),
  84.                 (byte) ((ld >> 8) & 0xff),
  85.                 (byte) ((ld >> 16) & 0xff),
  86.                 (byte) ((ld >> 24) & 0xff),
  87.  
  88.                 (byte) (days & 0xff),
  89.                 (byte) ((days >> 8) & 0xff),
  90.  
  91.                 105, -59, 0, 0
  92.         };
  93.  
  94.         bkey = writeSignature(name.toCharArray(), salt, bkey);
  95.  
  96.         BigInteger key = new BigInteger(bkey);
  97.         key = key.modPow(pow, mod);
  98.  
  99.         return String.format(
  100.                 "%05d-%s",
  101.                 salt,
  102.                 keyToString(key)
  103.         );
  104.     }
  105.  
  106.  
  107.     public static void main(String[] args) {
  108.         out.printf("\nJetBrains IntelliJ IDEA Keygen\nEnter name [%s]: ", DEFUALT_NAME);
  109.         String userName = in.nextLine().trim();
  110.  
  111.         if (userName.isEmpty()) {
  112.             userName = DEFUALT_NAME;
  113.         }
  114.  
  115.         out.printf("\nName: %s\nKey:  %s\n", userName, generateKey(userName, 0));
  116.  
  117.         out.println("Press Enter to exit...");
  118.         in.hasNextLine();
  119.     }
  120.  
  121. }
Success #stdin #stdout 0.12s 57060KB
comments (?)
stdin
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fwp
stdout
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JetBrains IntelliJ IDEA Keygen
Enter name [IntelliJ IDEA]: 
Name: fwp
Key:  25718-YCOE6-USR1M-8IGGH-PC00D-B7K12
Press Enter to exit...
https://ideone.com/7CQhAD
language:
Java (HotSpot 12)
created:
8 days ago
visibility:
public

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