D-Link DWL-500 User Manual page 20

CONFIGURATION UTILITY
The Access Point or wireless adapter will accept only encrypted
frames that it can decrypt correctly. This will only happen if the
receiver has the "WEP Key" used by the transmitter.
When WEP Encryption is enabled, there are two options: 64-bit and
128- bit.
NOTE: 64 bit WEP is the same as 40 bit WEP!
The lower level of WEP encryption uses a 40 bit (10 character)
"secret key" (set by the user), and a 24 bit "Initialization Vector" (not
under user control).
The panel allows the entry of four keys for 64-bit encryption and one
set for 128-bit key encryption. Each key must consist of hex digits,
which means that only digits 0-9 and letters A-F are valid entries.
The Configuration Utility will not apply keys that are not entered cor-
rectly.
Passphrase
Alternatively, a "Passphrase" can be entered which is used as a
"seed" to randomly generate the four keys. Using the "Passphrase"
saves considerable time since the same keys must be entered into
each node on the wireless network.
Manual Entry:
Key 1 - Key 4
These four fields can be used to manually enter the encryption keys.
This may be necessary if you wish this node to match keys in a dif-
ferent vendor's product. These fields also display the keys when
they are generated using a Pass-phrase.
Default Tx Key
The button updates the wireless adapter with the four keys entered in
Key 1 through Key 4. Once the "Apply" button is selected, the keys
are updated for the wireless adapter. Please note that the "Default Tx
Key" is not an available option when 128 bit encryption is selected.
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