The Generic Encryption Program (GEP)

RavynousHunter on 9/1/2009 at 07:36

It's a little project of mine I started some time ago on a whim. The GEP (or Generic Encryption Program) has grown since the first release and, as of v1.3, is a (at least) somewhat mature encryption program I made all by my lonesome using C# and a good bit of patience.

You can use it to encrypt and decrypt any kind of file, and can even batch en/decrypt files. Notes on the program and its functions can be found (http://guildwars.wikia.com/wiki/User:RavynousHunter/GEP) here.

If you are interested, you can get version 1.3 (http://www.geocities.com/ravynousdezign/GEP_1.3.zip) here. If you have any comments, questions, or whatnot, just post either in this topic or (http://guildwars.wikia.com/wiki/User_talk:RavynousHunter/GEP) here.

(sorry if this post seems a bit incomplete, I'm kinda distracted) :erg:

denisv on 9/1/2009 at 07:47

You should release the source code so I can rewrite it in five lines of Haskell

Kolya on 9/1/2009 at 07:49

I can load several files into the encrypter but not select the folder containing these files?
And when I tried to encrypt two text files it crashed:

Code:

Informationen über das Aufrufen von JIT-Debuggen
anstelle dieses Dialogfelds finden Sie am Ende dieser Meldung.

************** Ausnahmetext **************
System.ArgumentOutOfRangeException: InvalidArgument=Value mit dem Wert 0 ist für index ungültig.
Parametername: index
bei System.Windows.Forms.ListBox.ObjectCollection.get_Item(Int32 index)
bei GEP_1._1.Form1.cmdEncrypt_Click(Object sender, EventArgs e)
bei System.Windows.Forms.Control.OnClick(EventArgs e)
bei System.Windows.Forms.Button.OnClick(EventArgs e)
bei System.Windows.Forms.Button.OnMouseUp(MouseEventArgs mevent)
bei System.Windows.Forms.Control.WmMouseUp(Message& m, MouseButtons button, Int32 clicks)
bei System.Windows.Forms.Control.WndProc(Message& m)
bei System.Windows.Forms.ButtonBase.WndProc(Message& m)
bei System.Windows.Forms.Button.WndProc(Message& m)
bei System.Windows.Forms.Control.ControlNativeWindow.OnMessage(Message& m)
bei System.Windows.Forms.Control.ControlNativeWindow.WndProc(Message& m)
bei System.Windows.Forms.NativeWindow.Callback(IntPtr hWnd, Int32 msg, IntPtr wparam, IntPtr lparam)

************** Geladene Assemblys **************
mscorlib
Assembly-Version: 2.0.0.0.
Win32-Version: 2.0.50727.1433 (REDBITS.050727-1400).
CodeBase: file:///C:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll.
----------------------------------------
GEP 1.3
Assembly-Version: 1.0.0.0.
Win32-Version: 1.0.0.0.
CodeBase: file:///F:/Desktop/GEP_1.3/GEP%201.3.exe.
----------------------------------------
System.Windows.Forms
Assembly-Version: 2.0.0.0.
Win32-Version: 2.0.50727.1433 (REDBITS.050727-1400).
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Windows.Forms/2.0.0.0__b77a5c561934e089/System.Windows.Forms.dll.
----------------------------------------
System
Assembly-Version: 2.0.0.0.
Win32-Version: 2.0.50727.1433 (REDBITS.050727-1400).
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System/2.0.0.0__b77a5c561934e089/System.dll.
----------------------------------------
System.Drawing
Assembly-Version: 2.0.0.0.
Win32-Version: 2.0.50727.1433 (REDBITS.050727-1400).
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Drawing/2.0.0.0__b03f5f7f11d50a3a/System.Drawing.dll.
----------------------------------------
System.Windows.Forms.resources
Assembly-Version: 2.0.0.0.
Win32-Version: 2.0.50727.1433 (REDBITS.050727-1400).
CodeBase: file:///C:/WINDOWS/assembly/GAC_MSIL/System.Windows.Forms.resources/2.0.0.0_de_b77a5c561934e089/System.Windows.Forms.resources.dll.
----------------------------------------
mscorlib.resources
Assembly-Version: 2.0.0.0.
Win32-Version: 2.0.50727.1433 (REDBITS.050727-1400).
CodeBase: file:///C:/WINDOWS/Microsoft.NET/Framework/v2.0.50727/mscorlib.dll.
----------------------------------------

************** JIT-Debuggen **************
Um das JIT-Debuggen (Just-In-Time) zu aktivieren, muss in der
Konfigurationsdatei der Anwendung oder des Computers
(machine.config) der jitDebugging-Wert im Abschnitt system.windows.forms festgelegt werden.
Die Anwendung muss mit aktiviertem Debuggen kompiliert werden.

Zum Beispiel:

<configuration>
<system.windows.forms jitDebugging="true" />
</configuration>

Wenn das JIT-Debuggen aktiviert ist, werden alle nicht behandelten
Ausnahmen an den JIT-Debugger gesendet, der auf dem
Computer registriert ist, und nicht in diesem Dialogfeld behandelt.

RavynousHunter on 9/1/2009 at 18:32

That's odd... Two things to check:

* Do you have v3.5 of the .Net framework installed?
* Did you add a filename for the output (sp?) encrypted files? Due to the way this works, it doesn't overwrite the files themselves, it generates new, encrypted ones. I did this so as to prevent file butchering from a botched encryption; more as a fail-safe than anything.

For those who need this, a short run-thru of how to use my program:

Encryption:

* Under the "Encrypt" tab, select the "..." button next to the "Input Files:" list.
* Select your file(s) and hit OK.
* In the "Output Filename:" field, input a desired filename (w/ or w/o extension, as a diff one is added anyway) and hit enter. Do this for each file you wish to encrypt.
* Hit the "..." button next to the "Destination:" field to select where you want your encrypted file(s) to go.
* Hit "Encrypt."

Decryption:

* Under the "Decrypt" tab, select the "..." button next to the "Input Files:" list.
* Select the encrypted file(s) you want and hit OK.
* In the "Original Filename:" field, input the original filename (doesn't actually have to be its original filename, but it does need its original extension), and hit enter. Do this for each file in the Input list.
* Hit the "..." button next to the "Destination:" field to select where you want your decrypted file(s) to go.
* Hit "Decrypt."

I've tested this with plain text files, pictures, music, and a few videos, and it works fine. The encrypted files are sometimes larger than their source files, this is due to the encryption method I used and is normal. Of course, if you have any future problems, just tell me.

Kolya on 9/1/2009 at 19:31

I got .net 3.5 but didn't type in output filenames. Somehow I expected the program would write something like [OriginalFileName_encrypted.ext]. It's certainly not user friendly just to crash. A warning when trying to encrypt without given output names is the least.

RavynousHunter on 10/1/2009 at 00:05

Right, I missed that. I'll put in some checking and whatnot in Revision 1.

RavynousHunter on 10/1/2009 at 00:50

Fresh off the assembly line, I give you (http://www.geocities.com/ravynousdezign/GEP_1.3_R1.zip) GEP 1.3 R1.

I added some more user error checking to help prevent common crashes and also replaced the "Status" label with a new progress bar, to more accurately track the program's progress.

Kolya on 10/1/2009 at 01:03

If my computer goes up in flames I'll sue you. If it works I'll claim I wrote it.
(No readme/license is included.)

Oh and this isn't exactly the epitome of usability either, although it's better than it was.

Inline Image:

http://img74.imageshack.us/img74/7995/01102009020219ra8.jpg

EDIT: The way Output filenames are taken by the program is not intuitive and lacks explanation. BUT I ENCRYPTED SOMETHING!
EDIT2: False alarm, no files were out put. Sorry.

EDIT3: Why doesn't this work?

Inline Image:

http://img235.imageshack.us/img235/1340/01102009020717ha6.jpg

It just stops with the Encrypt bar full and no files appear.

EDIT4: Not to be a spoil fun but: (http://www.truecrypt.org/) TrueCrypt, (http://portableapps.com/apps/utilities/toucan) Toucan

RavynousHunter on 10/1/2009 at 03:48

I'm sorry, that was an accidental bug I didn't notice right away, it has been fixed. Also, I added a "FAQs" menu selection with a few basic questions that might come up. The "accidental bug" was that the program didn't append an extra backslash at the end of the destination, which apparently caused the encryption to fall through under the guise of working perfectly.

The new build is available from the same link as (http://www.geocities.com/RavynousDezign/GEP_1.3_R1.zip) v1.3 R1.

Kolya on 10/1/2009 at 09:48

It works. Open issues follow:
- It should encrypt files without the user having to put in new filenames. If you cannot get around this at least make two input fields next to each other so one can see which new filename belongs to which original. As it is, it hardly scales well.
- It should be able to restore the original filename.ext when decrypting.
- It should be able to encrypt/decrypt folder-structures and restore them!
- Minor: When a crypt job is done the bar stays at full scale at the moment.

Under the hood you could incorporate a quick zipping mechanism, and encrypt/decrypt those archives. That will get you folder structures and original filenames.

Future development:
- Ability to choose encryption algorithm
- Passwords
- Personal generated encryption keys
- On the fly encryption