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kglad
Community Expert
Community Expert
February 12, 2007
Question

SWF Encryption and Security by kglad

  • February 12, 2007
  • 35 replies
  • 15163 views
i have developed a swf encryption program (jsfl) that, i believe, is relatively uncrackable. relatively means if it were worth tens of thousands of dollars to crack, it wouldn't take more than a few weeks for a professional to crack.

it does have two weaknesses. one i'd rather not reveal but has nothing to do with the encryption scheme, the swf or anything else under the control of the encryption scheme. and the other is the possibility someone could hold a gun to the head of the encrypter and demand the code. (which i think would be a pretty successful tactic.)

but other than that it is much more secure than anything else i've seen.

i've uploaded a test file to my website. i'd like to invite users to decompile, check the source code or otherwise mess with it to see if they can find a weakness.

there's no need to crack the code and spend a lot of time. i'm just looking to see if someone can see a method to attack the encryption that would eventually lead to success.

http://www.gladstien.com/test.html

p.s. the swf displays a much faster and much more versatile (than g skinner's) hit detection scheme that i made after working on a project for urami. click on the dot or weird shape to drag. release and the object released turns green if it has a positive hit with the other shape.

p.p.s. please don't hack my server. i'm not challenging anyone to destroy all my files or otherwise bring down my website. i'm just looking for challenges to the encryption scheme.
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35 replies

Marghoob Sulemaan
Inspiring
February 15, 2007
But it is possible import all your movieClips on a stage. it should be password protected with your style. so no one could import your layout 2.
Marghoob Sulemaan
Inspiring
February 15, 2007
But it is possible import all your movieClips on a stage. it should be password protected with your style. so no one could import your layout 2.
Marghoob Sulemaan
Inspiring
February 15, 2007
Very very nice job... however i am very junior to say this... But its really great job...
All the very best... :D
Participating Frequently
February 15, 2007
obfuscation technique..
but it really works to protect ur work..
even thought it's not 100% secured, but at least, your code have filter out a lot of people from stealing ur work.

Nice job...!!!
~Salute..
kglad
Community Expert
kgladCommunity ExpertAuthor
Community Expert
February 14, 2007
i didn't change anything. www.gladstien.com/test.html is still working and visible and keygen.pl is in the same location at www.gladstien.com/cgi-bin/keygen.pl

Participating Frequently
February 14, 2007
hi.

yes yesterday i type http://www.gladstien.com/cgi-bin/keygen.pl and get
k1=83314612&k2=1944728553&k3=2947867&k4=67593022

but i cant download the keygen.pl file...

but now...
http://www.gladstien.com/cgi-bin/keygen.pl
just give me a blank page,
and http://www.gladstien.com/test.html it is not working anymore.
Inspiring
February 14, 2007
I tried several things to get to the keygen.pl but to no avail. Tried a LoadVars but it doesn't return anything.
kglad
Community Expert
kgladCommunity ExpertAuthor
Community Expert
February 14, 2007
yes, were you able to download the keygen.pl in your browser, did you use a download manager or did you use something else?
Participating Frequently
February 13, 2007
do you mean something like
k1=83314612&k2=1944728553&k3=2947867&k4=67593022
?
Participating Frequently
February 13, 2007
you mean
k1=83314612&k2=1944728553&k3=2947867&k4=67593022
?
kglad
Community Expert
kgladCommunity ExpertAuthor
Community Expert
February 13, 2007
yes, that will work.

but i'm now looking to see if you can you download www.gladstien.com/cgi-bin/keygen.pl or get it do "write" to some file you create so you can see k1, k2 etc.