MD5 encoded parameter in URL

Question

I am using following code to encrypt my email id in Java and sending it as a parameter in url (Using URLEncoder.encode(encrypteInput("email"))):

public static String encrypteInput(String input) {
        String output = null;
        input = input + ((int) Math.random()) % 1000;
        try {
            MessageDigest md5 = MessageDigest.getInstance("MD5");
            output = new String(md5.digest(input.getBytes()));
        } catch (Exception e) {
            output = "";
        }
        return output;
}

but, when I am getting the same parameter from servlet, it is not giving me the same output as encrypteInput("email").

How are you getting the parameter from the servlet? Sample? – Derek W Mar 08 '14 at 03:49 — Derek W, Mar 08 '14 at 03:49
same method...String token = request.getParameter("token"); – Vinit Sharma Mar 08 '14 at 03:52 — Vinit Sharma, Mar 08 '14 at 03:52

score 0 · Accepted Answer · answered Mar 08 '14 at 03:56

0

Whenever you have a byte array that you want to store in a string, you should be Hex- or Base64-encoding the byte array (hex-encoding is probably better in this particular case).

Apache commons-codec has a Hex class you can use for this:

byte[] bytes = ...
char[] encoded = Hex.encodeHex(bytes);
String encodedString = new String(encoded);

answered Mar 08 '14 at 03:56

dnault

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Okay let me try. Thanks for the help btw – Vinit Sharma Mar 08 '14 at 03:59
btw without using any external lib(apache), can I achieve the same ? – Vinit Sharma Mar 08 '14 at 04:01
http://stackoverflow.com/questions/9655181/convert-from-byte-array-to-hex-string-in-java – dnault Mar 08 '14 at 04:03

MD5 encoded parameter in URL

1 Answers1