phpor – 第85页 – PHPor 的Blog

保存为：KeyGen.java

import java.math.BigInteger;
import java.util.Date;
import java.util.Random;
import java.util.Scanner;
import java.util.zip.CRC32;
public class KeyGen {
    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(0x39aa400L);
        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){
        id %= 100000;
        byte bkey[] = new byte[12];
        bkey[0] = (byte) 1; // Product type: IntelliJ IDEA is 1
        bkey[1] = 14; // version
        Date d = new Date();
        long ld = (d.getTime() >> 16);
        bkey[2] = (byte) (ld & 255);
        bkey[3] = (byte) ((ld >> 8) & 255);
        bkey[4] = (byte) ((ld >> 16) & 255);
        bkey[5] = (byte) ((ld >> 24) & 255);
        days &= 0xffff;
        bkey[6] = (byte) (days & 255);
        bkey[7] = (byte) ((days >> 8) & 255);
        bkey[8] = 105;
        bkey[9] = -59;
        bkey[10] = 0;
        bkey[11] = 0;
        int w = getCRC(name, id % 100000, bkey);
        bkey[10] = (byte) (w & 255);
        bkey[11] = (byte) ((w >> 8) & 255);
        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){
        System.out.println("请输入用户名:");
        Scanner scanner = new Scanner(System.in);
        String username = scanner.next();
        Random r = new Random();
        System.out.println(MakeKey(username, 0, r.nextInt(100000)));
    }
}

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import java.math.BigInteger;

import java.util.Date;

import java.util.Random;

import java.util.Scanner;

import java.util.zip.CRC32;

public class KeyGen {

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(0x39aa400L);

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){

id %= 100000;

byte bkey[] = new byte[12];

bkey[0] = (byte) 1; // Product type: IntelliJ IDEA is 1

bkey[1] = 14; // version

Date d = new Date();

long ld = (d.getTime() >> 16);

bkey[2] = (byte) (ld & 255);

bkey[3] = (byte) ((ld >> 8) & 255);

bkey[4] = (byte) ((ld >> 16) & 255);

bkey[5] = (byte) ((ld >> 24) & 255);

days &= 0xffff;

bkey[6] = (byte) (days & 255);

bkey[7] = (byte) ((days >> 8) & 255);

bkey[8] = 105;

bkey[9] = -59;

bkey[10] = 0;

bkey[11] = 0;

int w = getCRC(name, id % 100000, bkey);

bkey[10] = (byte) (w & 255);

bkey[11] = (byte) ((w >> 8) & 255);

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){

System.out.println("请输入用户名:");

Scanner scanner = new Scanner(System.in);

String username = scanner.next();

Random r = new Random();

System.out.println(MakeKey(username, 0, r.nextInt(100000)));

}

…

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