LISP and DCL encryption

Roy Klein Gebbinck
Roy Klein Gebbinck
in Programming and customization

Dear forum members,

Some questions about LISP and DCL encryption:

  1. Can lisp files encrypted with the Bricssys lisp encryption tool be read by Autocad?
  2. If not: is there an alternative encryption tool out there with this capability (other than the old protect.exe which has been cracked).
  3. Is it possible to encrypt dcl files?
  4. Can lisp an dcl files be put in a single encrypted file loadable in BC and Autocad?

TIA.

Regards, Roy.

Comments

  • Vaidas Guogis
    Vaidas Guogis

    1. Encrypted file using Bricsys lisp encryption tool is not readable by AutoCAD.

    2.I know LispLink http://www.caelink.com/lisplink.htm but it protects/unprotects using the same encryption as protect.exe.

    3. No, even in VLX you can find DCL file lines unencrypted.

    4. No, you must provide your DCL file in application folder. Bricscad has no container file type like VLX in AutoCAD.

  • Roy Klein Gebbinck
    Roy Klein Gebbinck

    Thank you.

  • Yuriy Nazarenko
    Yuriy Nazarenko

    To encrypt dialogs make'em dynamicaly and then delete them. Use ActiveX for this method! :)

  • Vaidas Guogis
    Vaidas Guogis

    Create and delete - it's possible, but is it worth? DCL provides Dialog ID and Keys for lisp. Other data is format related.  What's wrong for security in this open code?

    Really, I don't understand the reason for DCL encryption.

    Anyway, you can exclude DCL files in your installation archive and provide them after purchase only, if it is very important.

     

This discussion has been closed.