myeclipse注册码算法

柔光的暖阳◎ 2022-10-01 04:40 150阅读 0赞

import java.io.BufferedReader;  
import java.io.IOException;  
import java.io.InputStreamReader;

public class MyEclipseGen \{  
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][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.";

public String getSerial(String userId, String licenseNum) \{  
java.util.Calendar cal = java.util.Calendar.getInstance();  
cal.add(1, 3);  
cal.add(6, -1);  
java.text.NumberFormat nf = new java.text.DecimalFormat("000");  
licenseNum = nf.format(Integer.valueOf(licenseNum));  
String verTime = new StringBuilder("-").append(  
new java.text.SimpleDateFormat("yyMMdd").format(cal.getTime()))  
.append("0").toString();  
String type = "YE3MP-";  
String need = new StringBuilder(userId.substring(0, 1)).append(type)  
.append("300").append(licenseNum).append(verTime).toString();  
String dx = new StringBuilder(need).append(LL).append(userId)  
.toString();  
int suf = this.decode(dx);  
String code = new StringBuilder(need).append(String.valueOf(suf))  
.toString();  
return this.change(code);  
\}

private int decode(String s) \{  
int i;  
char\[\] ac;  
int j;  
int k;  
i = 0;  
ac = s.toCharArray();  
j = 0;  
k = ac.length;  
while (j < k) \{  
i = (31 \* i) + ac\[j\];  
j++;  
\}  
return Math.abs(i);  
\}

private String change(String s) \{  
byte\[\] abyte0;  
char\[\] ac;  
int i;  
int k;  
int j;  
abyte0 = s.getBytes();  
ac = new char\[s.length()\];  
i = 0;  
k = abyte0.length;  
while (i < k) \{  
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;  
i++;  
\}  
return String.valueOf(ac);  
\}

public MyEclipseGen() \{  
super();  
\}

public static void main(String\[\] args) \{  
try \{  
System.out.println("please input register name:");  
BufferedReader reader = new BufferedReader(new InputStreamReader(  
System.in));  
String userId = null;  
userId = reader.readLine();  
MyEclipseGen myeclipsegen = new MyEclipseGen();  
String res = myeclipsegen.getSerial(userId, "5");  
System.out.println("Serial:" + res);  
reader.readLine();  
\} catch (IOException ex) \{  
\}  
\}  
\}

[http_www.loc.gov_copyright_legislation_dmca.pdf]: http://www.loc.gov/copyright/legislation/dmca.pdf