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Re: RB app decompile security

To: REALbasic NUG <realbasic-nug at lists dot realsoftware dot com>
Subject: Re: RB app decompile security
From: Andy Dent <dent at oofile dot com dot au>
Date: Fri, 30 Jun 2006 08:53:40 +0800
Delivered-to: listarchive at realsoftware dot com
Delivered-to: realbasic-nug at lists dot realsoftware dot com
References: <1hhni2w dot 11rdsow1dnzbucM%support at monkeybreadsoftware dot de>

On 28/06/2006, at 10:36 PM, Christian Schmitz wrote:

Ok, once RB optimizes my chr() calls, it will again place "ABC" in the
application, but currently it is not optimized this way.

In case anyone doesn't understand the implications of this comment, Christian is theorising that a straight Chr(65) might be optimised into a string constant in RB in future.

If you have an integer value calculated by something more complicated, I'm certain it will never be optimised away in such a revealing manner, if optimised at all.

BTW I was the person talking about a general source obfuscator a few weeks ago but there doesn't seem to be much interest. The initial motivation was the revealing of the fact that the RB encryption has been trivially broken recently so offers little protection if you are selling encrypted classes.
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