decrypting swf encrypted by swf encrypt 3.0

actually i want to make my swf files on the web totally unencrytable so i need to know if there is a way to decrypt it and how to prevent it

Probably .. I've done it myself without too much trouble. but it would
involve you doing it by hand (eg using Flasm), and perhaps changing some
bytes in the SWF file to make it 'legal' (as "encrypted" swfs are not
strictly legal, and may fail in future players).

The question is .. why are you trying to get at stuff that (one assumes)
someone else has encypted so you CANNOT get at it?
--
Jeckyl