Encryption or SHA - URGENT PLEASE

[Dar Scott]

On Jun 11, 2004, at 5:02 PM, Geoff Caplan wrote:

> DS> If you need just a simple obfuscation, then you can try building
> DS> something with the MD5 command (I have).  There is some literature 
> on
> DS> building true encryption this way.
>
> I did cobble together some obfuscation: should do the job ok: we're
> just trying to prevent kids spamming high-scores for a promotional
> game that gives small prizes...

Note that Richard Gaskin's method using MD5 is a simple example and is 
vulnerable to situations with known plaintext and repeated portions of 
plaintext.  Perhaps that is not a concern in your case.

Dar Scott