User manual

#13
www.istorage-uk.com
iStorage diskAshur DT
®
Manual – v 3.2
15. Brute Force Protection
What is Brute Force Attack?
A brute force attack is a method of defeating a cryptographic scheme by systematically trying a large number of possibilities;
for example, a large number of the possible keys in a key space in order to decrypt a message.
In most schemes, the theoretical possibility of a brute force attack is recognized, but it is set up in such a way that it would be
computationally infeasible to carry out. Accordingly, one definition of “breaking” a cryptographic scheme is to find a method
faster than a brute force attack.
How does the diskAshur DT protect against brute force attack?
1. With the drive locked and in the standby state the LED indicator light will be
solid RED.
2. After six tries to enter the correct user or Admin PIN the keypad will
not respond and LED indicator light will turn off. The drive will need to be
unplugged from the USB port and replugged. This will be repeated for each six
unsuccessful attempts.
3. If the user unsuccessfully tries to unlock the drive on his 10th try the keypad
will lock and the LED indicator light will begin blinking quickly. Even after
unplugging and replugging in the unit, the drive will remain locked and the
LED indicator light will continue to blink rapidly.
4. Here are the steps to allow the user to unlock the keypad for 10 more attempts
to unlock his drive.
a. Unplug the device from the computer
b. Push and hold the number 5 (five) key and plug-in the drive
c. The LED indicator lights will flash rapidly between RED and GREEN.
d. Enter the code 5278879
e. The keypad will unlock. The LED indicator light will be solid RED indicating
that the drive is in the standby state. This will allow only 10 more attempts
f. After a total of 20 attempts the drive will lock. The LED indicator light will flash
RED quickly. You must now go through the reset process and reformat the drive to
be able to use the drive again. (see page 15)