Android MD5 Encode MD5(String text)

Description

private stuff for converting strings to md5.

License

Apache License

Parameter

Parameter	Description
text	a parameter

Exception

Parameter	Description

Declaration

public static String MD5(String text) throws NoSuchAlgorithmException,
        UnsupportedEncodingException 

Method Source Code

//package com.java2s;
/*//  ww  w  . j a v a  2  s  .c  o m
 *  Copyright 2011 www.juancarlosfernadez.net
 *  
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *  
 *  http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 *
 */

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

public class Main {
    /**
     * private stuff for converting strings to md5.
     *
     * @param text
     * @return
     * @throws java.security.NoSuchAlgorithmException
     * @throws java.io.UnsupportedEncodingException
     */
    public static String MD5(String text) throws NoSuchAlgorithmException,
            UnsupportedEncodingException {
        MessageDigest md;
        md = MessageDigest.getInstance("MD5");
        byte[] md5hash = new byte[32];
        md.update(text.getBytes("UTF-8"), 0, text.length());
        md5hash = md.digest();
        return convertToHex(md5hash);
    }

    /**
     * Get the stuff and convert it to Hex.
     * creepy, got it from the internets :P
     *
     * @param data
     * @return
     */
    public static String convertToHex(byte[] data) {
        StringBuffer buf = new StringBuffer();
        for (int i = 0; i < data.length; i++) {
            int halfbyte = (data[i] >>> 4) & 0x0F;
            int two_halfs = 0;
            do {
                if ((0 <= halfbyte) && (halfbyte <= 9))
                    buf.append((char) ('0' + halfbyte));
                else
                    buf.append((char) ('a' + (halfbyte - 10)));
                halfbyte = data[i] & 0x0F;
            } while (two_halfs++ < 1);
        }
        return buf.toString();
    }
}

Related

1. getMD5String(String str)
2. getMd5(byte... values)
3. checkDicMD5(String dicFile, final byte[] expected)
4. MD5(String md5)
5. getMD5Str(String str)
6. stringGetMD5String(String s)
7. byteMd5(String plainText, Boolean is16)
8. getMD5(byte[] source)
9. md5(String string)