MyEclipse Blue注册代码

原帖地址： http://www.iteye.com/topic/176174 在main方法中填入id和授权数目，运行就可以获得注册码，仅供学习参考：

import java.text.DecimalFormat;

import java.text.NumberFormat;

import java.text.SimpleDateFormat;

import java.util.Calendar;



public class Crack {

	public static final void main(String[] args){

		String id="注册名 id";

		String num="填上授权数目 1-999";

		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() : "-0812310";

		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);

	}

}