Flash Encryption

[nacworld]

Hello Guys,
I have seen some webpages with nice flash banners & films, and I couldn't download them even with programs or firefox entensions... is there any how a method to encrypt those files... Any free or cheap program you may offer ?
Thanks

[GP200]

Here's a link to one of the best known Flash encryption programs, though most .swf can be decompiled to a greater or lesser extent.
http://www.amayeta.com/

If a file needs protection I usually use an empty container .swf and load movie. Lock the domain of the loaded movie.

You were asking how to encrpt ? not how to decompile protected work?

Instead of trying to decomplie work, time is usually spent better learning how to do whatever is you are trying to emulate, there's a ton of tutes about where you can freely download .fla's to study.

try:
http://www.kirupa.com/
http://www.gotoandlearn.com/

[nacworld]

thank you GP200.. I m not sure about encryption or decompiling is the best word to explain but I need to secure my flash files so no one can download them... Can you explain more about decompiling ? How do you lock the domain ?

[GP200]

Decompiling is just grabbing the flash file (.swf) and turning it into a .fla. There are many programs that can do this all with limitations. Anything more than basic tweens gets a bit complicated for them. Most actionscript movement is converte to timeline, text to bitmaps etc.

Locking your .swf's or Flash files can be done in many ways from a simple action script to check the domain, something like;
http://www.emanueleferonato.com/2008...a-flash-movie/

Or you can create and call a php script from the server, if the correct response is not received the flash won't play.

Basically there are lots of different ways depending on your skill level, how much work you want do, whether ActionScript 2 or ActionScript 3 is being used etc.

Heres a selection of answers in more detail than I can give;
http://www.google.co.uk/search?hl=en...G=Search&meta=

[nacworld]

thanks really, I now understand better

There is something more I want to learn... Can we also secure FLV files ? So that only works on our webpage or don't allow to be downloaded...

[GP200]

It's much the same as .swf encryption, though there is a lot of free software to auto download .flv's they are mainly aimed at YouTube etc but will download/steal most .flv's.

Depending on the video and including ones we put on YouTube we don't bother with encryption. We place the URL required across the video, across all frames. Then if the video is stolen/downloaded the message gets across whenever it is played.

If it's bandwidth being stolen hotlinking can be stopped to both .swf & .flv files the same way as you would block image hot linking, something like the below in your .htaccess file;

RewriteEngine on
RewriteCond %{HTTP_REFERER} !^$
RewriteCond %{HTTP_REFERER} !^http(s)?://(www\.)?yourdomain.com [NC]
RewriteRule \.(swf|flv)$ - [NC,F,L]


If you are confident in .htaccess most hosting control panels can help you set this easily.