Java MD5 String md5(String message)

Description

md

License

Open Source License

Declaration

public static String md5(String message) 

Method Source Code

//package com.java2s;
/**//from   ww w  . j  a  v  a2  s  .  c o m
 *  JMongo is a mongodb driver writtern in java.
 *  Copyright (C) 2010  Xiaohu Huang
 *
 *  JMongo is free software: you can redistribute it and/or modify
 *  it under the terms of the GNU General Public License as published by
 *  the Free Software Foundation, either version 3 of the License, or
 *  (at your option) any later version.
 *
 *  JMongo is distributed in the hope that it will be useful,
 *  but WITHOUT ANY WARRANTY; without even the implied warranty of
 *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *  GNU General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with JMongo.  If not, see <http://www.gnu.org/licenses/>.
 */

import java.io.UnsupportedEncodingException;
import java.security.MessageDigest;
import java.security.NoSuchAlgorithmException;

public class Main {
    private static final char[] DIGITS_LOWER = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c',
            'd', 'e', 'f' };

    public static String md5(String message) {
        try {
            MessageDigest digest = MessageDigest.getInstance("MD5");
            byte[] buffer = message.getBytes("UTF-8");
            digest.update(buffer);
            return encodeHex(digest.digest());
        } catch (NoSuchAlgorithmException e) {
            throw new RuntimeException(e.getMessage());
        } catch (UnsupportedEncodingException e) {
            throw new RuntimeException(e.getMessage());
        }
    }

    public static String encodeHex(byte[] data) {
        int l = data.length;
        char[] out = new char[l << 1];
        // two characters form the hex value.
        for (int i = 0, j = 0; i < l; i++) {
            out[j++] = DIGITS_LOWER[(0xF0 & data[i]) >>> 4];
            out[j++] = DIGITS_LOWER[0x0F & data[i]];
        }
        return new String(out);
    }
}

Related

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2. MD5(String md5)
3. md5(String message)
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7. md5(String orgin)
8. md5(String pass)
9. md5(String password)