|code transformations? firstname.lastname@example.org (1996-09-22)|
|Re: code transformations? email@example.com (1996-09-23)|
|Re: code transformations? firstname.lastname@example.org (Charles Fiterman) (1996-09-23)|
|Re: code transformations? email@example.com (1996-09-25)|
|Re: code transformations? firstname.lastname@example.org (Darius Blasband) (1996-09-26)|
|Re: code transformations? email@example.com (1996-09-26)|
|Re: code transformations? firstname.lastname@example.org (1996-09-26)|
|Re: code transformations? email@example.com (1996-09-29)|
|Re: code transformations? firstname.lastname@example.org (Norman Culver) (1996-09-29)|
|Re: code transformations? email@example.com (1996-10-03)|
|Re: code transformations? firstname.lastname@example.org (Henry Dan Lambright) (1996-10-20)|
|[2 later articles]|
|From:||Darius Blasband <email@example.com>|
|Date:||26 Sep 1996 11:05:34 -0400|
|Organization:||Phidani Software, Brussels|
Tom Lord wrote:
> ... This got me to thinking -- suitably
> sophisticated transformations could preserve the semantics of the
> program, while completely disguising the text of the source. This has
> obvious implications for anyone into intellectual property theft.
> So the question is, has anybody written such a program? Will anyone?
> Would releasing such a program on the net be like the SATAN of IP?
> [There are certainly C obfuscators, but the ones I know of perform primarily
> lexical smooshing. -John]
We had received quite a bunch of source code, where, besides the
lexical smooshing - quoting John - the code was also destructured,
that is, enum variable declarations where replaced by ints,
loops by gotos, etc... It was rather effective: we rebuilt the source
code of a single function, and it was awfully long and awkward. I doubt
that it could be performed automatically reasonably easily.
I think it was produced by a tool by Gimpel Software. I never used it myself,
and I guess there might be limitations when using such a tool with too
much preprocessor niceties.
[Gimpel's product was called C Shroud. I presume it's still available,
though I don't see it on their web site, either. -John]
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