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CaNsA
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Joined: 02 Jan 2008
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PostPosted: 22:08 - 15 May 2010    Post subject: Encryption Reply with quote

I have a 300gig external usb, portable hdd.

I need to encrypt it in a way that i can plug it into any other computer, enter the "key" and use it.

no software can be installed on the other computers.

Ideas?

cheers
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Phoenix
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Joined: 01 Aug 2002
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PostPosted: 22:45 - 15 May 2010    Post subject: Reply with quote

Depends what the use is and what it is you want to encrypt, there's probably software specifically for it. You could just turn the stuff into an encrypted self ectracting zip archive with a password, set the compression level to zero and it'll be nearly as quick as a straight file copy.
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Burnside
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PostPosted: 22:47 - 15 May 2010    Post subject: Reply with quote

We use Utimaco Safeguard and Becrypt on USB hard drives at work cos they're FIPS-42 certified, you only need to input one password when the device is plugged in, nothing needs to be installed on the PC.

Truecrypt is open source with AES 256bit certification but I've never used it, not sure how straightforward it would be for removable devices. But hey, its free Smile
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temeluchus
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PostPosted: 00:35 - 16 May 2010    Post subject: Reply with quote

Phoenix wrote:
Depends what the use is and what it is you want to encrypt, there's probably software specifically for it. You could just turn the stuff into an encrypted self ectracting zip archive with a password, set the compression level to zero and it'll be nearly as quick as a straight file copy.


WinRAR can do that and is free.
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Aka Matt
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Joined: 15 Feb 2008
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PostPosted: 00:41 - 16 May 2010    Post subject: Reply with quote

I found truecrypt very straight forward to use and it also offers a variety of different encryption types too depending on the level of security you are after.
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CaNsA
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Joined: 02 Jan 2008
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PostPosted: 08:04 - 16 May 2010    Post subject: Reply with quote

Cheers for the replies peeps.

@ Phoenix

Using compression software wont work as no software can be installed/ran on the other computers.
And Winzip/Winrar passwords are not secure.

@ hollyj

Been checking out the software u mentioned, can i have a copy Wink
I have been playing with truecrypt, its quite fiddly. Hopefully i have sussed it. I will have to wait until monday to test it out in work. I wounder how the NHS network will respond to it.

@ Temeluchus

Cant trust a Nietzschean......

@ Evil Dude UK

Simple encryption has been easy to set up. But a portable, automount, enter password and access system has been a complete arse to config.
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tsmith
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Joined: 15 Apr 2005
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PostPosted: 19:17 - 16 May 2010    Post subject: Reply with quote

For software solutions, check out Truecrypt, PGP Disk or Drivecrypt

Hardware solutions check out https://www.enovatech.net/solutions.htm
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Phoenix
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Joined: 01 Aug 2002
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PostPosted: 22:04 - 16 May 2010    Post subject: Reply with quote

CaNsA wrote:
Using compression software wont work as no software can be installed/ran on the other computers.
And Winzip/Winrar passwords are not secure.


Self extracting archives don't require any software on the destination computer, that's the idea behind them. Winzip/WinRAR passwords are just as secure as any, you just have to make sure it can't be found by a dictionary attack ie make it alphanumeric and nonsensical to a dictionary.
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CaNsA
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PostPosted: 22:35 - 16 May 2010    Post subject: Reply with quote

Cheers Tom,

Ill give them a go. the "on the fly" feature is what im after.

Phoenix wrote:

Self extracting archives don't require any software on the destination computer, that's the idea behind them.


Yeah, well done like... but how can i encrypt the altered data afterwards with out installing the software?

Quote:

Winzip/WinRAR passwords are just as secure as any, you just have to make sure it can't be found by a dictionary attack ie make it alphanumeric and nonsensical to a dictionary.


Dude, its easy to pull files from a password protected archive.
they get stored in a temp location until the password is entered.
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Phoenix
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PostPosted: 13:35 - 17 May 2010    Post subject: Reply with quote

Not in self extracting archives they don't, password first, then extraction Rolling Eyes

And "yeah, well done like", well I did say in the very first post that you haven't said what exactly you are planning to do so I assumed it was files you needed access to, not to work off the hard drive and save more to it, for all I know it's just to read files from another computer.

You know best, you figure it out.
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