Symbol Technologies Symbol AP-5131 User Manual

6-22

Default (hexadecimal) 256-bit keys for WPA/TKIP include:

1011121314151617

18191A1B1C1D1E1F

2021222324252627

28292A2B2C2D2E2F

7.

Click the 

button to save any changes made within the WPA/TKIP Settings field of the 

New Security Policy screen.

8.

Click the 

 button to undo any changes made within the WPA/TKIP Settings field and 

return to the 

screen. This reverts all settings to the last saved configuration.

WPA2 is a newer 802.11i standard that provides even stronger wireless security than Wi-Fi Protected 
Access (WPA) and WEP. CCMP is the security standard used by the Advanced Encryption Standard 
(AES). AES serves the same function TKIP does for WPA-TKIP. CCMP computes a Message Integrity 
Check (MIC) using the proven Cipher Block Chaining (CBC) technique. Changing just one bit in a 
message produces a totally different result. 

WPA2/CCMP is based on the concept of a Robust Security Network (RSN), which defines a hierarchy 
of keys with a limited lifetime (similar to TKIP). Like TKIP, the keys the administrator provides are used 
to derive other keys. Messages are encrypted using a 128-bit secret key and a 128-bit block of data. 
The end result is an encryption scheme as secure as any the AP-5131 provides.

To configure WPA2-CCMP on the AP-5131:

1.

Select 

-> 

-> 

from the AP-5131 menu tree. 

To use an ASCII passphrase (and not a hexadecimal value), select 
the checkbox and enter an alphanumeric string of 8 to 63 
characters. The alphanumeric string allows character spaces. The 

AP-5131

 converts the string to a numeric value. This passphrase 

saves the administrator from entering the 256-bit key each time 
keys are generated.

To use a hexadecimal value (and not an ASCII passphrase), select 
the checkbox and enter 16 hexadecimal characters into each of the 
four fields displayed.