Java MD5 String MD5(String text)

Description

MD

License

Apache License

Declaration

public static String MD5(String text) 

Method Source Code

//package com.java2s;
//License from project: Apache License 

import java.security.MessageDigest;

public class Main {
    public static String MD5(String text) {
        try {/*from w ww  .  j  a v  a2 s  . co  m*/
            MessageDigest md = MessageDigest.getInstance("MD5");
            byte[] md5hash = new byte[32];
            md.update(text.getBytes("iso-8859-1"), 0, text.length());
            md5hash = md.digest();
            return convertToHex(md5hash);
        } catch (Exception e) {
        }
        return null;
    }

    private static String convertToHex(byte[] data) {
        StringBuffer buf = new StringBuffer();
        for (int i = 0; i < data.length; i++) {
            int halfbyte = data[i] >> 4 & 0xF;
            int two_halfs = 0;
            do {
                if ((0 <= halfbyte) && (halfbyte <= 9))
                    buf.append((char) (48 + halfbyte));
                else
                    buf.append((char) (97 + (halfbyte - 10)));
                halfbyte = data[i] & 0xF;
            } while (two_halfs++ < 1);
        }
        return buf.toString();
    }
}

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