password.java

运用hibernate技术 实现的留言板

/**
 * 
 */
package com.tiandinet.util;

import java.security.MessageDigest;

/**
 * The Password function.
 * @author Meng Yang
 * @version 1.0.1
 */
public class Password {
	/**
	 * Constructor
	 *
	 */
	public Password() {
	}
	
	public static String md5(String plainText) {
		String encryptText = null;
		try {
			MessageDigest m = MessageDigest.getInstance("MD5");
			m.update(plainText.getBytes("UTF8"));
			byte s[] = m.digest();
			String result = "";
			for (int i = 0; i < s.length; i++) {
				result += Integer.toHexString((0x000000FF & s[i]) | 0xFFFFFF00)
						.substring(6);
			}
			return result;
		}
		catch (Exception e) {
		}
		
		return encryptText;
	}
}