IDEA注册算法

IntelliJ IDEA 加密算法一直没变过

128位RSA加密

 

import java.math.BigInteger;import java.util.Random;import java.util.zip.CRC32;    static String CalcSerial(String userName) {        byte[] paramArrayOfByte = {0x1, 0x0b,                0x00, 0x00, 0x00, 0x00,                0x0, 0x0,                0x71, 0x45,                0x00, 0x00};        long l = System.currentTimeMillis() >> 16;        paramArrayOfByte[2] = (byte) (l & 0xff);        paramArrayOfByte[3] = (byte) (l >> 8 & 0xff);        paramArrayOfByte[4] = (byte) (l >> 16 & 0xff);        paramArrayOfByte[5] = (byte) (l >> 24 & 0xff);        CRC32 localCRC32 = new CRC32();        Random rdm = new Random(System.currentTimeMillis());        int paramInt = rdm.nextInt();        paramInt = (paramInt > 0) ? paramInt % 100000 : (0 - paramInt) % 100000;        if (userName != null) {            for (int i = 0; i < userName.length(); i++) {                localCRC32.update(userName.charAt(i));            }        }        localCRC32.update(paramInt);        localCRC32.update(paramInt >> 8);        localCRC32.update(paramInt >> 16);        localCRC32.update(paramInt >> 24);        for (int i = 0; i < paramArrayOfByte.length - 2; i++) {            localCRC32.update(paramArrayOfByte[i]);        }        long crc = localCRC32.getValue();        paramArrayOfByte[10] = (byte) crc;        paramArrayOfByte[11] = (byte) (crc >> 8);        BigInteger localBigInteger2 = new BigInteger(paramArrayOfByte);        final BigInteger Modulus = new BigInteger("86f71688cdd2612ca117d1f54bdae029", 16);  //Modulus (N)        final BigInteger privateExponent = new BigInteger("430D187DE8BB3F18FB0A986E6B7163BD", 16);  //Private Exponent (D)        BigInteger localBigInteger1 = localBigInteger2.modPow(privateExponent, Modulus);        String serial = encodeGroups(localBigInteger1);        return String.format("%1$05d-", paramInt) + serial;    }    public static String encodeGroups(BigInteger paramBigInteger) {        BigInteger localBigInteger = BigInteger.valueOf(60466176L);        StringBuffer localStringBuffer = new StringBuffer();        int i = 0;        while (paramBigInteger.compareTo(BigInteger.ZERO) != 0) {            int j = paramBigInteger.mod(localBigInteger).intValue();            String str2 = encodeGroup(j);            if (i > 0) {                localStringBuffer.append("-");            }            localStringBuffer.append(str2);            paramBigInteger = paramBigInteger.divide(localBigInteger);            i++;        }        String str1 = localStringBuffer.toString();        return str1;    }    public static String encodeGroup(int paramInt) {        StringBuffer localStringBuffer = new StringBuffer();        for (int j = 0; j < 5; j++) {            int k = paramInt % 36;            char c;            if (k < 10) {                c = (char) (48 + k);            } else {                c = (char) (65 + k - 10);            }            localStringBuffer.append(c);            paramInt /= 36;        }        return localStringBuffer.toString();    }