1 package TestCase;
2 import java.io.BufferedReader;
3 import java.io.IOException;
4 import java.io.InputStreamReader;
5
6 public class jihuo {
7 private static final String LL = "Decompiling this copyrighted software is a violation of both your license agreement and the Digital Millenium Copyright Act of 1998 (http://www.loc.gov/copyright/legislation/dmca.pdf). Under section 1204 of the DMCA, penalties range up to a $500,000 fine or up to five years imprisonment for a first offense. Think about it; pay for a license, avoid prosecution, and feel better about yourself.";
8 public String getSerial(String userId, String licenseNum) {
9 java.util.Calendar cal = java.util.Calendar.getInstance();
10 cal.add(1, 3);
11
12 cal.add(6, -1);
13 java.text.NumberFormat nf = new java.text.DecimalFormat("000");
14 licenseNum = nf.format(Integer.valueOf(licenseNum));
15 String verTime = new StringBuilder("-").append(
16 new java.text.SimpleDateFormat("yyMMdd").format(cal.getTime()))
17 .append("0").toString();
18 String type = "YE3MP-";
19 String need = new StringBuilder(userId.substring(0, 1)).append(type)
20 .append("300").append(licenseNum).append(verTime).toString();
21 String dx = new StringBuilder(need).append(LL).append(userId)
22 .toString();
23 int suf = this.decode(dx);
24 String code = new StringBuilder(need).append(String.valueOf(suf))
25 .toString();
26 return this.change(code);
27 }
28 private int decode(String s) {
29 int i;
30 char[] ac;
31 int j;
32 int k;
33 i = 0;
34 ac = s.toCharArray();
35 j = 0;
36 k = ac.length;
37 while (j < k) {
38 i = (31 * i) + ac[j];
39 j++;
40 }
41 return Math.abs(i);
42 }
43 private String change(String s) {
44 byte[] abyte0;
45 char[] ac;
46 int i;
47 int k;
48 int j;
49 abyte0 = s.getBytes();
50 ac = new char[s.length()];
51 i = 0;
52 k = abyte0.length;
53 while (i < k) {
54 j = abyte0[i];
55 if ((j >= 48) && (j <= 57)) {
56 j = (((j - 48) + 5) % 10) + 48;
57 } else if ((j >= 65) && (j <= 90)) {
58 j = (((j - 65) + 13) % 26) + 65;
59 } else if ((j >= 97) && (j <= 122)) {
60 j = (((j - 97) + 13) % 26) + 97;
61 }
62 ac[i] = (char) j;
63 i++;
64 }
65 return String.valueOf(ac);
66 }
67 public jihuo() {
68 super();
69 }
70 public static void main(String[] args) {
71 try {
72 System.out.println("please input register name:");
73 BufferedReader reader = new BufferedReader(new InputStreamReader(
74 System.in));
75 String userId = null;
76 userId = reader.readLine();
77 jihuo myeclipsegen = new jihuo();
78 String res = myeclipsegen.getSerial(userId, "5");
79 System.out.println("Serial:" + res);
80 reader.readLine();
81 } catch (IOException ex) {
82 }
83 }
84 }
