LOK-IT Technical Overview

S Y S T E M A T I C D E V E L O P M E N T G R O U P , L L C
well and used to decrypt the content. In addition to the epoxy potting all LOK-IT models
internal security system are designed to store the encryption key on a separate
electronically protected security controller. Therefore, even if the flash is accessed by
slicing away the epoxy potting, the encryption key remains secure and the data cannot be
decrypted.
PIN
Drive Default Status
To meet the varying requirements of clients, LOK-IT drives may be configured to be
shipped unlocked (i.e. use of PIN is optional) or disabled (i.e. PIN must be set before initial
use). See LOK-IT FEATURE COMPARISONS on page 18 for a listing of drive default states.
PIN Strength
PIN strength is a factor of PIN length as demonstrated in the table below. LOK-IT drives
are configured with variable minimum PIN length requirements. See LOK-IT FEATURE
COMPARISONS on page 18 for a listing of default minimum PIN lengths.
5 Key 10 Key
PIN
Length Probability "One In …"
PIN
Length Probability "One In …"
1 20.000000000% 5 1 10.000000000% 10
2 4.000000000% 25 2 1.000000000% 100
3 0.800000000% 125 3 0.100000000% 1,000
4 0.160000000% 625 4 0.010000000% 10,000
5 0.032000000% 3,125 5 0.001000000% 100,000
6 0.006400000% 15,625 6 0.000100000% 1,000,000
7 0.001280000% 78,125 7 0.000010000% 10,000,000
8 0.000256000% 390,625 8 0.000001000% 100,000,000
9 0.000051200% 1,953,125 9 0.000000100% 1,000,000,000
Incorrect PIN Attempts
After 10 unsuccessful PIN entries, the encryption key is deleted, both User and Master
PIN's are reset and stored data is no longer readable. If the drive is reinserted into a
computer, it cannot be used until a reformat operation is performed. When the user
selects the reformat option, all stored data is automatically deleted and a new encryption
key is created. Although all previously stored data has been deleted, this feature allows
the drive to be recovered for reuse.
IP Code
The IP Code (or International Protection Rating) consists of the letters IP followed by two
digits and an optional letter. As defined in international standard IEC 60529, it classifies
the degrees of protection provided against the intrusion of solid objects (including body
parts like hands and fingers), dust, accidental contact, and water in electrical enclosures.
The standard aims to provide users more detailed information than vague marketing terms
such as "waterproof". The digits ('characteristic numerals') indicate conformity with the IP
Code rating system. Where there is no protection rating with regard to one of the criteria,
the digit is replaced with the letter X.
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