How to decrypt this LISP code

[Anonymous]

Please help to decry-pt the attached LISP file

BWF PROTECTED LISP
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[Jonathan3891]

That lisp file is compiled and there is no way to decipher it. 

Its compiled to keep the coding private.

[roland.r71]

As DSM_Dude already stated: The encryption is to protect the lisp code against modification and copying.

Besides that, this is not an "Autocad protected lisp", but a "BWF protected lisp".

As far as i know (which might be shortcoming) the BWF (BloWFish) encryption (& compression) is done by using DEScoder which is used for BricsCAD, not AutoCAD.

From DEScoder info:

"This software provides strong BlowFish encryption for AutoLISP files - these encrypted AutoLISP files can only be used and loaded by BricsCAD system.
DEScoder is mainly designed to support AutoLISP application developers, providing a maximum comfort for the development cycle, and to protect the application code."

Any attempt to decrypt such file, without consent from the author, is illegal.

So, you better keep searching for another (uncompiled) lisp routine.