SafeStick
has been designed from the ground-up to be the most secure, user
friendly and feature rich encrypted storage media available. They are
100% secure.
What is the issue?
On January 4, 2010, it was reported by SySS
to the media that certain hardware-encrypted USB flash drives have been
hacked. Of major concern is that some of these devices have received
FIPS 140-2 Level 2 security validation. FIPS 140-2 security validation
is required by certain Government agencies to use encryption products.
More information on the reports, research and other news articles relating to this issue can be found here.
Some of the reportedly affected devices include:
- SanDisk Cruzer Enterprise FIPS Edition
- SanDisk Cruzer Enterprise
- Kingston DataTraveler BlackBox
- Kingston DataTraveler Secure Privacy Edition
- Kingston DataTraveler Elite Privacy Edition
- Verbatim Corporate Secure FIPS Edition
- Verbatim Corporate Secure
*NOTE*
SanDisk OEM their software to other vendors - Kingston, Verbatim, MXI,
PICO and others may be affected - we strongly recommend checking with
your supplier if you are in any doubt.
What is the flaw, and what does it mean in practice?
All affected devices can be unlocked instantaneously, and at will with
the right tools without knowing the user’s password - rendering the
encryption totally useless.
The
vulnerability is a fundamental architectural design flaw. The affected
products use software that runs on the host PC to verify the user’s
password, and then sends a signal to the device to unlock itself. SySS
was able to write a simple software unlocker tool that patches the
software to always send the unlock code to the devices.
The security flaws of these products include:
- Using software on the host PC to validate the password.
-
Using a "backdoor" unlock code. This not only allows attackers to gain
access, but it allows the vendors of these products to unlock any of
these devices as well.
- Allowing "password replay" attacks. Once the unlock code sequence is known, it can be used over and over again.
Also with a "backdoor" password/code built in, the question must also be asked as to who has access to this backdoor code....
What makes SafeStick the most secure device, and not vulnerable to such an attack?
- There are NO BACKDOOR PASSWORDS OR UNLOCK CODES in a SafeStick.
- The user password is verified within the SafeStick hardware device.
- The SafeStick brute-force protection is also operated within the hardware controller.
- The password entered by the user is hashed in the SafeStick computer host software using MD5.
- The unique password string enters the SafeStick BM9930 hardware controller through a totally secure private channel over USB.
- The hashed password string is hashed once more (SHA256) in firmware onboard the SafeStick device.
-
The dually hashed password is used to access the hardware encrypted
cryptographic keys created with the random number generator (ANSI X9.31
RNG) onboard SafeStick.
- The unique cryptographic keys are used to encrypt all user stored information with AES256-CBC.
- The SafeStick hardware is fully epoxy encapsulated - tamper proof.
I thought FIPS 140 Level 2 Certification meant it was totally secure. Why not?
SafeStick.net & Blockmaster have been asked many times why SafeStick does
not currently have FIPS 140-2 or 3 accreditation ( 8th January
2010).
We have always maintained that
the standard SafeStick is more secure than the FIPS baseline accreditation. However SafeStick IS currently undergoing FIPS
accreditation.
The truth is that this a US
Government "baseline" for a security product, a "tick box" if you will
for customers, and while it does involve rigorous testing of products
it does not guarantee that a product is 100% secure, just that it meets
a baseline security standard.
Many vendors
think that data security means data encryption. The Encryption
component is actually a very small part of the overall security
implementation of the device as the above vulnerability demonstrates.
Products must be designed to ensure secure password management,
authentication, encryption key management, design assurance as well as
physical security.
In this vulnerability
case, the vendors created "backdoors" to unlock all devices, using
software running on the host PC and still passed the FIPS 140-2 Level 2
validation.