Create a MD5-Hash and Dump as a Hex String

this is not working!

the java.security package produces strange md5 hashes with 30, 31 or 32 characters. it seems to cut out 0's here and there.

better go for this easy implementation: http://www.twmacinta.com/myjava/fast_md5.php#download

Cool,

so you used a MD5 in a hex string!!! thanks, that was inspiring

Keep up the good work

Quite inspiring,

hashing this way can prevent hackers to use the data so easily

Keep up the good work

This MD5 is not working properly. Chris is correct on this one. I am missing 0s aas well.

I was looking for something like this, but this function skips zeroes. No good at all.

I found something that works well, however:

public static String MD5_Hash(String s) { MessageDigest m = null;

    try {
            m = MessageDigest.getInstance("MD5");
    } catch (NoSuchAlgorithmException e) {
            e.printStackTrace();
    }

    m.update(s.getBytes(),0,s.length());
    String hash = new BigInteger(1, m.digest()).toString(16);
    return hash;

}

From http://www.mail-archive.com/android-beginners@googlegroups.com/msg18680.html

Try this.. public static final String md5(final String s) { try { // Create MD5 Hash MessageDigest digest = java.security.MessageDigest .getInstance("MD5"); digest.update(s.getBytes()); byte messageDigest[] = digest.digest();

        // Create Hex String
        StringBuffer hexString = new StringBuffer();
        for (int i = 0; i < messageDigest.length; i++) {
            String h = Integer.toHexString(0xFF & messageDigest[i]);
            while (h.length() < 2)
                h = "0" + h;
            hexString.append(h);
        }
        return hexString.toString();

    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    return "";
}

Source :http://www.kospol.gr/204/create-md5-hashes-in-android/

Try this.. It works for me..

public static final String md5(final String s) { try { // Create MD5 Hash MessageDigest digest = java.security.MessageDigest .getInstance("MD5"); digest.update(s.getBytes()); byte messageDigest[] = digest.digest();

        // Create Hex String
        StringBuffer hexString = new StringBuffer();
        for (int i = 0; i < messageDigest.length; i++) {
            String h = Integer.toHexString(0xFF & messageDigest[i]);
            while (h.length() < 2)
                h = "0" + h;
            hexString.append(h);
        }
        return hexString.toString();

    } catch (NoSuchAlgorithmException e) {
        e.printStackTrace();
    }
    return "";
}

Source :

http://www.kospol.gr/204/create-md5-hashes-in-android/

Worked for me ..... thanks ....

Since: API Level 1

http://developer.android.com/reference/java/security/MessageDigest.html

MessageDigest digester = MessageDigest.getInstance("MD5"); byte[] bytes = new byte[8192]; int byteCount; while ((byteCount = in.read(bytes)) > 0) { digester.update(bytes, 0, byteCount); } byte[] digest = digester.digest();

Didn't work for me crashed on in.read(bytes) ....

its working....my code for android.is package com.hari.md5;

import java.security.MessageDigest; import java.security.NoSuchAlgorithmException; //import java.util.ArrayList; //import java.util.Collections;

import android.app.Activity; import android.os.Bundle; import android.widget.TextView;

public class Projectmd5Activity extends Activity { / Called when the activity is first created. */

String s = "000005fab4534d05api_key9a0554259914a86fb9e7eb014e4e5d52methodflickr.auth.getFullTokenmini_token123-456-789";
   String  res = md5(s);
   TextView tv = new TextView(this);
   tv.setText(res);
   setContentView(tv);

     // Create Hex String
     StringBuffer hexString = new StringBuffer();
     for (int i=0; i<messageDigest.length; i++)
         hexString.append(Integer.toHexString(0xFF & messageDigest[i]));
    return hexString.toString();

 } catch (NoSuchAlgorithmException e) {
     e.printStackTrace();
 }
 return "";

}

As I know, this MD5 is not working properly. Chris is correct on this one. I am missing 0s aas well.