- package myeclipse.blue;
- import java.text.DecimalFormat;
- import java.text.NumberFormat;
- import java.text.SimpleDateFormat;
- import java.util.Calendar;
- public class CrackE8_6 {
- public static final void main(String[] args) {
- String id = "wuchao"; // id //this result is jLR8ZO-655556-67678656287653974
- String num = "1"; // 授權數目
- System.out.println(getSerial(id, "100", num, false));
- }
- public static String getSerial(String userId, String version,
- String licenseNum, boolean selected) {
- Calendar cal = Calendar.getInstance();
- cal.add(1, 3);
- cal.add(6, -1);
- NumberFormat nf = new DecimalFormat("000");
- licenseNum = nf.format(Integer.valueOf(licenseNum));
- String verTime = selected ? (new StringBuffer("-")).append(
- (new SimpleDateFormat("yyMMdd")).format(cal.getTime())).append(
- "0").toString() : "-1212310"; // 到期時間20121231
- String type = "YE3MB-";
- String need = (new StringBuffer(String.valueOf(userId.substring(0, 1))))
- .append(type).append(version).append(licenseNum)
- .append(verTime).toString();
- String dx = (new StringBuffer(String.valueOf(need)))
- .append(
- "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.")
- .append(userId).toString();
- int suf = decode(dx);
- String code = (new StringBuffer(String.valueOf(need))).append(
- String.valueOf(suf)).toString();
- return change(code);
- }
- private static int decode(String s) {
- int i = 0;
- char ac[] = s.toCharArray();
- int j = 0;
- for (int k = ac.length; j < k; j++)
- i = 31 * i + ac[j];
- return Math.abs(i);
- }
- private static String change(String s) {
- byte abyte0[] = s.getBytes();
- char ac[] = new char[s.length()];
- int i = 0;
- for (int k = abyte0.length; i < k; i++) {
- int j = abyte0[i];
- if (j >= 48 && j <= 57)
- j = ((j - 48) + 5) % 10 + 48;
- else if (j >= 65 && j <= 90)
- j = ((j - 65) + 13) % 26 + 65;
- else if (j >= 97 && j <= 122)
- j = ((j - 97) + 13) % 26 + 97;
- ac[i] = (char) j;
- }
- return String.valueOf(ac);
- }
- }