Just a bit more Bitlocker info:

Bitlocker allows you to set up an automatic decrypt on whatever machine(s) you 
want but the default value is to ask for the decrypt key. For instance, I have 
my USB drive set up to automatically decrypt but plugging it into any other 
machine will ask for an unlock key.

My only gripe with USB drives is that when you have a number of them they don't 
always set themselves up as a permanent drive letter. For instance I have 3 x 
USB drives that are rotated on a daily basis and I use Syncback to put mirror 
images onto the disks. Syncback requires a fixed drive mapping (example z:) but 
windows in its infinite wisdom gives random drive mappings which have to be 
changed using disk Manager at which stage the auto decrypt of bitlocker takes 
over and opens the drive. I have tried man, many pieces of software which state 
that they will force a drive to be mapped to a specific letter but none of them 
work 100%. 

However this is another gripe taking the thread off topic somewhat.

Dave


-----Original Message-----
From: ProFox [mailto:[email protected]] On Behalf Of Ken Dibble
Sent: 06 February 2017 20:13
To: [email protected]
Subject: [NF] Drop-Dead Simple USB Drive Encryption

Hi Folks,

This is probably one of those issues where my requirements seem obvious and 
common-sensical to me but not to the people who make hardware or software. 
However, in the interest of developing a complete understanding of my options:

I am looking for recommendations for the simplest possible way to encrypt USB 
thumb drives. "Simplest possible" means in reference to the end user.

The sole purpose of the thumb drive is to provide offsite backup for important 
files.

The sole purpose of encrypting the thumb drive is to prevent access by 
unauthorized people to the contents of the drive if the user loses it.

Here are my requirements:

1. Must be usable by a "standard user" account: No administrative access 
required.

2. Must not require software to be installed on the computer (installed on the 
removable drive is okay).

3. Access should be available, ideally, simply by right-clicking the drive in 
Windows Explorer and entering the password for the drive (like with BitLocker). 
Less desirable would be for the user to have to manually execute software 
residing on the drive before being given an interface in which to enter the 
password. Anything more complicated than that, such as requiring users to copy 
files to/from the drive, or carry out multiple steps to get to the point where 
the password can be entered, is not acceptable.

3. The drive should work on any Windows computer of recent vintage, no matter 
where it was initially set up.

4. Users cannot permanently turn the encryption off.

5. Ideally, the entire drive should be encrypted.

I am prepared to accept that my staff will have to set up these drives 
initially for the users. That's okay as long as, once that work's been done, 
the drive functions as described above. And, of course, I can only set up 
computers under my control, which is why I can't use a system that requires 
software to be installed on every machine where the drive will be used.

Here is what I've looked at:

BitLocker

Problems: only available on Windows 7 Ultimate, or later. Most of our 
workstations are Windows 7 Ultimate, but some are Pro. Also, there are a couple 
of points I'm not sure about with BitLocker:

A. When an internal drive is encrypted on a computer, the user can check a box 
to essentially turn off the encryption (that is, the drive will be 
automatically decrypted when the computer is booted). I do not want the user to 
be able to turn off the encryption on a thumb drive such that, if the drive is 
inserted into another computer it is automatically decrypted. Does BitLocker 
allow that?

B. I am not sure that a drive encrypted with BitLocker on a Win 7 machine will 
be accessible on a Win 10 machine, or vice versa. Does anyone have a definitive 
answer on that point?

LaCie Private - Public

Problems: Does not work for "standard users", period. Also, requires the drive 
to be formatted NTFS in order to encrypt more than 4 GB of space.

Rohos

Problems: Requires multiple steps for standard users to access; cannot encrypt 
more than 4 GB under any circumstances.

VeraCrypt

Problems: Requires software to be installed on the machine.

Hardware Encryption

I took a visual look at the Corsair Flash Padlock drive. It's got dinky little 
flashing lights and tiny little buttons. I can just imagine what will happen 
when a user has to get into the drive by poking and punching tiny little 
buttons with their fingernails while the drive is inserted into the typical 
fragile USB slot. Not a winner... But are there other hardware encryption 
options that don't suffer from this or other flaws?

Of course, I am also looking for solutions that are free as in beer. 
But I am willing to pay a reasonable one-time cost. No way would I pay a 
recurring cost for a license to access a thumb drive.

Any thoughts are welcome.

Thanks!

Ken Dibble
www.stic-cil.org


[excessive quoting removed by server]

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