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Steganography / Encryption Software Expand / Collapse
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Posted 29/08/2008 19:44:18
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Ok I know in a way my request is self defeating on the security front but I'll try anyway.

I'm after some encryption / Steganoraphy software to create a small secure partion on removable drive (usb etc). That's the easy bit found plenty of this.

HOWEVER I would like the file (partition) to be able to be accessed without need for software on the host system and be editable and when closed re-encrypted. Ideally i dont want to run exe's on the host system although I am aware this may be the need.

In short I'm after a self decrypting / encrypting file / partition area on a USB drive with minimal need for exe's to run on the host.

I appreciaite holding the decryption / encryption key within the file presents a risk but the information is being protected mainly to prevent the casual individual getting to it. But it does require a little more protection than a standard file file password would afford.

Hope someone can help.

TT

__________________________________________________________________________

We trained hard, but it seemed every time we were beginning to form up into teams, we would be reorganised. I was to learn later in life that we tend to meet any new situation by reorganising, and a wonderful method it can be for creating the illusion of progress while producing confusion, inefficiency and demoralisation.

Post #308127
Posted 30/08/2008 00:55:40


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Truecyrpyt may help even though you have to run an EXE on a PC to help you. On the pluys side it runs from the USB drive.

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Post #308170
Posted 30/08/2008 10:49:45
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Thanks,

looked at Truecrypt and thought it may be of use. I am happy to use 'installed software' to create the files / volume initially but would prefer they were self-decryping and if then changed could self re-encrypt when closed.

My reasoning is I want to be able to use the files on work systems and systems I visit occasionaly.

Nearest I think other than Truecrypt I have found is Blowfish but again this requires an exe on the usb stick, it is however very small and considerably easier than Truecrypt. I will however re-visit truecrypt and trawl the manual to see if any of the options suit me better than the satndard.

Ta

Geof I

__________________________________________________________________________

We trained hard, but it seemed every time we were beginning to form up into teams, we would be reorganised. I was to learn later in life that we tend to meet any new situation by reorganising, and a wonderful method it can be for creating the illusion of progress while producing confusion, inefficiency and demoralisation.

Post #308187
Posted 30/08/2008 11:10:25


Pentium

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Blowfish is an encryption algorithm I *think* Truecrypt will make use of blowfish (personally I only ever use it with AES).

Truecrypt should run directly from the USB drive and is secure because you can set it up with a pass phrase / key etc. that you only have to remember

Ultimately you are going to *have* to run an exe to perform the decryption I'm afraid....

EDIT: ah no, Truecrypt uses TwoFish as one of it's algorithms - which is based onBlowfish (a more modern variant). It too is free of cryptanalysis.

For Truecrypt on a USB stick go here: http://www.truecrypt.org/docs/ and fins "Traveller Mode" on the left. This works well for me for highly secret information / files so it should be fine for your uses

Cheers,
Tom
My Crime is that of curiosity, my crime is that of outsmarting you


-- MMMugs Clan member, MM-UK Folding Team Member, Web programmer, Electronics student and Micro Mart contributor --

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Post #308195
Posted 30/08/2008 19:29:02
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Many thanks,

Will look at this as it sounds like the best i'm gonna get.

As an aside the blowfish I used of old was a program to allow file ecyption and decription used a variety of alogarithms and I seem to recall blowfish was actually one of them so i guess thats where the name came from.

Thanks

Geof

__________________________________________________________________________

We trained hard, but it seemed every time we were beginning to form up into teams, we would be reorganised. I was to learn later in life that we tend to meet any new situation by reorganising, and a wonderful method it can be for creating the illusion of progress while producing confusion, inefficiency and demoralisation.

Post #308251
Posted 30/08/2008 19:50:14


Pentium

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AH right

If you look through some of the links on the Truecrypt site there are a few other options available that might suit you better.

I guess it's just a case of trial and error

Cheers,
Tom
My Crime is that of curiosity, my crime is that of outsmarting you


-- MMMugs Clan member, MM-UK Folding Team Member, Web programmer, Electronics student and Micro Mart contributor --

[ Main/Gaming (Vista): Core2Duo E2140 @ 2.65Ghz, 2GB ] [ Laptop (XP): CoreDuo 2.5GHz, 1GB ] [ File Server (Ubuntu 7.10): P4 2.93GHz, 256MB ] [ Folding 1 (Diskless folder): Unkown PIII, 256MB ]
-- Inactive / in build--
Folding 2 (Diskless folder): Opteron @ 2.6(ish), 512MB
Folding 2,4,5,6,7,8,9,10 (Diskless folders): Unkown PIII's and 4's, 128 -> 256MB
DHCP Server (Ubuntu 7 Server): P4 2GHz, 512MB


Post #308252
Posted 31/08/2008 17:39:35
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If you want an encrypted USB drive why not buy one, e.g.Sandisk for example? OK its only 128 bit encryption, and fully visible as a secured file, but it will put off most casual attacks. If your files require more than 128 bit encryption you probably shouldn't be putting them in your pocket!
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