Kvaser BlackBird Getting Started Guide
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Kvaser AB, Mölndal, Sweden
— www.kvaser.com
5.4.2 WEP-64 or WEP-128
When using WEP-64, you must provide a 40-bit-key in hexadecimal format (i.e. 10
hexadecimal digits). For WEP-128 you need a 104-bit-key. There is room for up to 4 keys to
be entered. You may also use a pass phrase to generate the WEP keys, see 5.4.6 Using
pass phrase to generate keys. Use the radio buttons to the left of the keys to select the key
that will be used.
5.4.3 About Static WEP keys
Some rules for setting up WEP:
The BlackBird must have one of the WEP keys specified on the AP in order to decode
data sent from the AP to the BlackBird.
The AP must have all of the BlackBird’s keys so the AP can decode transmissions
from the BlackBird to the AP.
The key must occupy the same slot on all nodes (AP and BlackBirds). For example, if
the AP defines abc123 as WEP key number 3, then the BlackBirds must define that
same string as WEP key 3.
5.4.4 Authentication algorithm
When using WEP encryption, you can choose the Authentication algorithm:
Open system means any station may connect to the AP whether that client station
has the correct WEP key or not. This algorithm is also used in WPA and WPA2
encryption modes.
Shared key authentication requires the client station to have the correct WEP key in
order to associate with the access point.
Even though a client station is allowed to associate with an access point, this does not ensure
the client can exchange traffic with that access point. A station must have the correct WEP
key in order to successfully access and decrypt data from an access point, and to transmit
readable data to the access point.
5.4.5 WPA-PSK or WPA2-PSK
Both WPA and WPA2 use Pre-Shared Keys (PSK). WPA-PSK uses the Temporal Key
Integrity Protocol (TKIP). WPA2-PSK uses Counter mode/CBC-MAC Protocol which uses the
Advanced Encryption Algorithm (AES).
Note that if you connect the BlackBird to a network that allows both WPA-PSK and WPA2-
PSK, you must currently use WPA-PSK.
5.4.6 Using pass phrase to generate keys
Instead of entering the security keys in hexadecimal format, you may use a Passphrase. Click
on the Passphrase button and a Generate keys window will open. This window will allow you
to enter a pass phrase and select which types of keys you would like to generate.
