A89: Re: faking a rom

To: <assembly-89@lists.ticalc.org>
Subject: A89: Re: faking a rom
From: "Zeljko Juric" <zjuric@utic.net.ba>
Date: Mon, 5 Jun 2000 18:02:11 +0200
Reply-To: assembly-89@lists.ticalc.org


> I make the assumption that the 512bit checksum is really just 8 RC5 
> checksums (64bits each), that was then encrypted w/ RSA.

You probably mean MD5 instead of RC5? Maybe this is another name for
the same thing?

> if we can write our own rom image with correct checksums, we can, 
> for example, modify it to not check the checksums on applications...

I am afraid that the checking code is stored in unwritable part (first
64K) of the Flash ROM :-(

Zeljko Juric

Prev: Re: A89: Re: faking a rom
Next: Re: A89: Re: faking a rom
Index(es):
- Main
- Thread