Android MD5加密

package cn.itcast.mobilesafe.util;

import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class MD5Encoder {

	public static String encode(String pwd) {
		try {
			MessageDigest digest = MessageDigest.getInstance("MD5");
			byte[] bytes = digest.digest(pwd.getBytes());
			StringBuffer sb = new StringBuffer();
			for (int i = 0; i < bytes.length; i++) {
				String s = Integer.toHexString(0xff & bytes[i]);

				if (s.length() == 1) {
					sb.append("0" + s);
				} else {
					sb.append(s);
				}
			}

			return sb.toString();
		} catch (NoSuchAlgorithmException e) {
			e.printStackTrace();
			throw new RuntimeException("buhuifasheng");
		}
	}
}