A89: Re: faking a rom


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A89: Re: faking a rom




> 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