package assignment1;

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

//对字符串进行加密
public class Encrypt {
	public static String MD5(String str) {
		try {
			MessageDigest md = MessageDigest.getInstance("MD5");
			md.update(str.getBytes());
			byte[] b = md.digest();
			StringBuffer sb = new StringBuffer();
			for (byte c : b) {
				int val = ((int) c) & 0xff;
				if (val < 16)
					sb.append("0");
				sb.append(Integer.toHexString(val));
			}
			return sb.toString().toUpperCase();
		} catch (NoSuchAlgorithmException e) {
			e.printStackTrace();
		}
		return null;
	}

	public static void main(String[] args) {
		System.out.println(MD5("123456"));
	}
}