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Author Topic: lisp security  (Read 14076 times)

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Ron Heigh

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lisp security
« Reply #15 on: December 08, 2003, 02:32:51 PM »
I would be more interested in a program that had an encryption algorithim included in the source.
This would stop all users who didn't know how to "crack".
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JohnK

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lisp security
« Reply #16 on: December 08, 2003, 02:39:57 PM »
:? You got one! (The VL IDE) I think your taking this to the extreme. If i wanted your programs that bad Ron, I would write my own. As Mark said, the avg. user isnt even gonna check the Reg. so what makes you think that ... whatever.
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Craig

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lisp security
« Reply #17 on: December 08, 2003, 02:50:42 PM »
Ron, just as se7en said, I would probably just place a security file within the Autocad folder and give it an extension that doesn't stand out, you know like acad.mpi or ddvpls.tbl. Then incoporate your security into this file. Make it read every 5th or 6th character on until it gets all the characters it needs to fulfill the criteria needed. As everyone else has stated, your average CAD user won't have a clue what to look for.
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JohnK

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lisp security
« Reply #18 on: December 08, 2003, 02:53:46 PM »
Im sorry Ron, but i just think your being WAY to paranoid.
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ELOQUINTET

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lisp security
« Reply #19 on: December 08, 2003, 02:55:10 PM »
i don't have a clue so it seems to work   :roll:  

dan
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Craig

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lisp security
« Reply #20 on: December 08, 2003, 02:58:50 PM »
Ron I'll tell you, the one who should be paranoid is Se7en because in two weeks he's going to be on Minnesota nightly news covering his face with his coat because he destroyed his employers computer system and went and shot everyone at Intellicad :twisted:
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ELOQUINTET

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lisp security
« Reply #21 on: December 08, 2003, 03:02:59 PM »
yeah most cad users can't even spell encryption algorithim much less know what the hell it is... like me copy paste hehehe

dan
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Ron Heigh

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lisp security
« Reply #22 on: December 08, 2003, 04:10:20 PM »
Your suggestions won't work in our case.  We need to be able to give our routines to subs and have them expire every month.  I want a nag box to popup and stop all routines until the correct code is entered.  Just placing the code in a file is less work that using the registry though, good suggestion.  We can send the file to the user every month until their contract ends.  It would still need to be undeciferable though.  Some of our subs have programmers of their own who could crack it.
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SMadsen

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lisp security
« Reply #23 on: December 08, 2003, 04:44:20 PM »
Don't think the weakest link will be the encryption method, but how to recognize which routines to block and how to block them.
Are you going to implement a call to a main check routine within each of your routines?
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Ron Heigh

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lisp security
« Reply #24 on: December 08, 2003, 04:57:18 PM »
We have 2 major programs we are concerned with.
Each of these programs will make a call to the security routine everytime they are used.
A past employer had a similar setup that actually overwrote all *.lsp files in the support path if they expired.
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Keith

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lisp security
« Reply #25 on: December 08, 2003, 04:58:54 PM »
You counld include the API for a demo and send a VB file with it. I will look up more info on that later.
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JohnK

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lisp security
« Reply #26 on: December 08, 2003, 05:18:21 PM »
Undeciferable is the easy part. Make everything in there useless! Make it a garbage holder with a small key that you look for. -e.g. Find your name in this garbage.

Quote
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rugaroo

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lisp security
« Reply #27 on: December 08, 2003, 07:05:26 PM »
Ron -

I have a program that will do what you would like...I can't remember how much I paid or where, but I will look when I get home tonight... It encrypts the lisp file that you want in to an 'AutoCAD Protected File'... If you want it, let me know, and you can at least try it out and see how well it actually works.

Rug
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Keith

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lisp security
« Reply #28 on: December 08, 2003, 07:26:08 PM »
AutoCAD protected Lisp files are not secure and can be easily unprotected. That is why the VLIDE compiler is so good. It compiles the lisp, and vlisp into machine code and gives it a .vlx extension.
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