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 Forum index » Off-Topic Area » Security
Looking for java based file crypt / decrypt
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oliver69

Joined: 08 Jun 2007
Posts: 168
Location: Heidelberg / Germany

PostPosted: Thu 15 Aug 2013, 13:31    Post_subject:  Looking for java based file crypt / decrypt  

Hi,
i looking for an os independet crypt / decrypt tool - but can not find something on the net ,,,,
- java app, single jar file preferred (for portability)
- aes 128 (256 would be nice)
- file drag and drop, so gui no command line (nice to have too)
Any ideas?
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Flash
Official Dog Handler


Joined: 04 May 2005
Posts: 11083
Location: Arizona USA

PostPosted: Thu 15 Aug 2013, 16:32    Post_subject:  

Here are some Java tutorials I just stumbled across. Good luck finding anything useful. Laughing
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Semme

Joined: 07 Aug 2011
Posts: 3938
Location: World_Hub

PostPosted: Thu 15 Aug 2013, 16:36    Post_subject:  

Possibly.. Didn't look deep enough to check drag'n drop.
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Barkin


Joined: 12 Aug 2011
Posts: 724

PostPosted: Thu 15 Aug 2013, 18:29    Post_subject:  

How about JavaScript ... http://www.fourmilab.ch/javascrypt/ [can run in any internet browser with javascript so is "OS independent"].
IMO javascrypt only practical for things like passwords and short text messages, but theoretically could encode any file if converted to hexadecimal, gonna be slow on big files though.

My suggestion : forget JAVA and use TrueCrypt, the encrypted "containers" can be read by TrueCrypt on Windows or Linux.
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DPUP5520

Joined: 16 Feb 2011
Posts: 801

PostPosted: Thu 15 Aug 2013, 21:53    Post_subject:  

Cryptomni

It's pretty old (2007) but still relevent

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jpeps

Joined: 31 May 2008
Posts: 3220

PostPosted: Fri 16 Aug 2013, 04:47    Post_subject:  

DPUP5520 wrote:
Cryptomni

It's pretty old (2007) but still relevent


Works! Theoretically, you could just send the the app (35K) and key as email attachments for encrypted email as long as the recipient had java installed. You can store multiple documents with the same key.
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oliver69

Joined: 08 Jun 2007
Posts: 168
Location: Heidelberg / Germany

PostPosted: Fri 16 Aug 2013, 08:25    Post_subject:  

portablepgp looks like the best at the moment, but no single jar file and it seems not to support drag and drop. truecrypt is not an option because i need single files and no containers. the reason behind is to have files from several clients on one usb stick which can run everywhere as long java is installed (which is in true in the most cases), sometimes i need to send the file by emai so its neccessary to have a unique key for each customer or file.
currently i use encryption wizard (which is very good and has all features) - spi.dod,mil - but i have no good feelings which the source of the software, maybe it includes a backdoor like a general key.
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SFR


Joined: 26 Oct 2011
Posts: 1072

PostPosted: Fri 16 Aug 2013, 13:33    Post_subject:  

Hey, take a look at this, I just found it:
http://sourceforge.net/projects/enfomi/
Looks promising - supports, inter alia, AES-256 and can create self-decrypting archives.
And it's written in Java, of course.

Greetings!

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jpeps

Joined: 31 May 2008
Posts: 3220

PostPosted: Fri 16 Aug 2013, 14:07    Post_subject:  

SFR wrote:
Hey, take a look at this, I just found it:
http://sourceforge.net/projects/enfomi/
Looks promising - supports, inter alia, AES-256 and can create self-decrypting archives.
And it's written in Java, of course.

Greetings!


Hey...that's really great. No need to send the app,key, and file...just a jar. Slightly larger file, but less hassle.

edit: really well thought-out UI..simple to use on both ends. This could solve the NSA issue.
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DPUP5520

Joined: 16 Feb 2011
Posts: 801

PostPosted: Sun 18 Aug 2013, 03:05    Post_subject:  

jpeps wrote:
DPUP5520 wrote:
Cryptomni

It's pretty old (2007) but still relevent


Works! Theoretically, you could just send the the app (35K) and key as email attachments for encrypted email as long as the recipient had java installed. You can store multiple documents with the same key.


One of the points of Cryptomni is to only use the key Once (with one file) therefore making the encryption theoretically unbreakable.

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oliver69

Joined: 08 Jun 2007
Posts: 168
Location: Heidelberg / Germany

PostPosted: Sun 18 Aug 2013, 09:02    Post_subject:  

enfomi looks great .... but didn't work..... i always get a file with jar extension and after successfull decryption the file is useless (garbage).
and other ideas?
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Semme

Joined: 07 Aug 2011
Posts: 3938
Location: World_Hub

PostPosted: Sun 18 Aug 2013, 09:20    Post_subject:  

Enfomi- it's possible you're not using it correctly. This for PPGP.
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oliver69

Joined: 08 Jun 2007
Posts: 168
Location: Heidelberg / Germany

PostPosted: Sun 18 Aug 2013, 10:20    Post_subject:  

Semme wrote:
Enfomi- it's possible you're not using it correctly. This for PPGP.


no i just use it as a standalone application. but the crypted file has always an jar extension - no matter what i selected under options. also drag and drop didn't work.
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jpeps

Joined: 31 May 2008
Posts: 3220

PostPosted: Sun 18 Aug 2013, 11:10    Post_subject:  

oliver69 wrote:


no i just use it as a standalone application. but the crypted file has always an jar extension - no matter what i selected under options. also drag and drop didn't work.


It creates a jar file that contains the encrypted doc. That's the point. The recipient just clicks on it, enters the password, and gets the file.
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oliver69

Joined: 08 Jun 2007
Posts: 168
Location: Heidelberg / Germany

PostPosted: Sun 18 Aug 2013, 11:28    Post_subject:  

jpeps wrote:
oliver69 wrote:


no i just use it as a standalone application. but the crypted file has always an jar extension - no matter what i selected under options. also drag and drop didn't work.


It creates a jar file that contains the encrypted doc. That's the point. The recipient just clicks on it, enters the password, and gets the file.


yes this is the problem .... i don't get a file .... but it states that the decrypting was successfull....strange.
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