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Reference
2- 10
BPA105 Bluetooth Protocol Analyzer User Manual -- COMPANY CONFIDENTIAL
1/2001
Bluetooth security supports authentication (unidirectional or mutual) and
encryption, which are based on a secret LinkKey that is shared by a pair of
devices. This secret key is derived during initialization and is not disclosed.
The size of the LinkKey is always 128 bits. In encryption it may vary from
8--128 bits (the authentication key is used in generating the encryption key).
This is an authentication process. You do not have to calculate the LinkKey
using a complex algorithm. Enter the PIN code (optional ASCII entry) used
between master and slave for authentication. In pairing, the K
init
value is
calculated and used for decrypting the data transaction between master and slave
(see note).
NOTE
. When using decryption in Independent mode with the Pairing option,
some of the following keys are generated and displayed in the application
window: Random number, Kc, Kc prime, and LinkKey.
To enable encryption, you must perform the following set up in the Bluetooth
Neighborhood application.
1.
In the Bluetooth menu bar, select
Bluetooth
>
Bluetooth Neighborhood
Properties
.
2.
Open the Security tab and select
Link level security
for the Security Mode.
3.
Select
Enable
for the Encryption Mode.
4.
Once bonding is established between master and slave, you need to expire
bonding to use decryption in Independent mode. Right-click the device
bonded in Bluetooth Neighborhood and select expire bonding.
Decryption in Independent
Mode
Authentication
Pairing
Encryption Set Up
Summary of Contents for BPA105
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