Reverse engineering
ollie lho
ollie at sis.com.tw
Wed May 21 03:23:00 CEST 2003
On Wed, 2003-05-21 at 13:48, Steve Gehlbach wrote:
> ollie lho wrote:
>
> >
> > If you are tracing the code with some kind of debugger rather than
> > disassembly the binary image, does it matter if the image is encrypted ?
>
> I guess it depends on why it is encrypted, and why you are tracing it.
> Encryption for copy protection, and access protection (ie movies and
> e-books), is covered by the DMCA. The language of the law is
> "circumvention", which basically means getting around the protection
> mechanism, and I don't think it matters how you do that, tracing,
> decrypting, whatever. There is an exception for reverse engineering for
> the purpose of developing interoperable software. For the case of a
> BIOS, one is developing interoperable software so it seems to be an
> exception, if the BIOS is encrypted (as in the Xbox).
>
Then why a DVD player with DeCSS not a "interoperatable" software ?
--
ollie lho <ollie at sis.com.tw>
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