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:profox-bounces@leafe.com] On Behalf Of Ken Dibble Sent: 06 February 2017 20:13 To: profox@leafe.com 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]

On Mon, Feb 6, 2017 at 1:12 PM, Ken Dibble krdibble@stny.rr.com wrote:

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

[...]

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?

The Kingston Data Traveler series drives have hardware crypto, but they're unlocked using a small program stored on separate cleartext partition. They're not cheap however. so after I lost mine I switched to truecrypt/veracrypt.

Given your sole purpose, however, have you totally ruled out automating the backup routine and baking-in file-level crypto?

hth

dt