Puppy Linux Discussion Forum

gposil · Posted: Wed 24 Jun 2009, 00:31 Post subject: PupCrypt

Thought this maybe of use to some, during my work on the Puppy Personal Database, I had to port some of my work from that other OS to Puppy and this was just part of it...A super-duty file encryption app.

It uses a modified RC6 128bit-block algorithm with a twist, the key which can be up to 2040bit is also encrypted using sha1...Now there's some security...The prog saves a copy of the hashed key in the working directory.

Any if its of use, here it is, if anyone is interested the the source to the encryption, let me know

clarf · Joined: 13 Jun 2007 Posts: 606 Location: The old Lone Wolf

Very interesting project.

Did you modify original RC6 algorithm?. As I remember it´s a RSA patented algorithm....

gposil · Posted: Wed 24 Jun 2009, 01:25 Post subject:

No, the algorithm core is Rijndael(AES) with the key registers modified from RC6 ideas

ttuuxxx · Posted: Wed 24 Jun 2009, 02:18 Post subject:

wow that looks like a cool program, anyway to get it say under 100kb? makes it hard to have a default application when its almost 1MB.
Still would be great for pupplets etc. Thanks, Also I always figured it would be nice to have a application similar to this but embedded into the OS, So when you partition a hard drive it uses maybe the hard drive serial number and encrypts it automatically and then a backup hard drive program would have to have it built in also, so it could be mirrored, that way say if you did a full install of puppy as root, hackers on the net would not be able to access that HD, Something like that could be good for businesses, banks etc, actually almost a split system would be good, like when you install a application, a pop-up would ask, "Is this a Internet resource using application?" and if so, that would be a memory based application, meaning every time that the application is ran, its moved to a /tmp/ location in the memory and if it wasn't then it would just use the hard drive. Maybe I'm over thinking things again, lol
ttuuxxx

gposil · Posted: Wed 24 Jun 2009, 02:47 Post subject:

I can get the algorithm and key registers in under 50k but the gui is the big hog...if someone wants to do the gui in Vala/Genie that would do it...I don't have time to learn another computer language...already too many in my head, I may have a look at it in c++ in future...

Lobster · Posted: Wed 24 Jun 2009, 06:09 Post subject:

Guy - enclosed is a shell script which calls the bcrypt program (blowfish algorithm) that is in puppy 4.15 Alpha - you can see the program in /usr/sbin

decompress
Just get rid of .txt extension and make in executable Smile

that might be suitable for your needs Smile

tee hee

reminds me of one of the few programs I wrote
Blowfish 007
It was more developed than this - maybe MI5 made off with it?
http://www.murga-linux.com/puppy/viewtopic.php?p=121242&search_id=65932637#121242

gposil · Posted: Wed 24 Jun 2009, 07:34 Post subject:

yes I knew about that, used blowfish about ten years ago, rather archaic and slow compared to modern 128bit and and above block encoders...and totally unsuitable for stream encryption.

clarf · Joined: 13 Jun 2007 Posts: 606 Location: The old Lone Wolf

HI gposil. Could you share the encryption source code, you said you´ll check to port it to C++. I´ll like to access the C/C++ source.

Thank you.

Mixie · Joined: 06 Jul 2009 Posts: 1