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Security
The BDA is usually displayed in hexadecimal format; 00:D0:B7:03:2E:9F is a valid BDA. Each
Bluetooth device also has a configurable, user-friendly name to help distinguish it from other
devices.
The user-friendly name may be up to 99 alphanumeric characters in length and may contain
spaces. My Personal Computer is a valid user-friendly name.
Encryption
Encrypting translates data into an unreadable format using a secret key or password. Decrypting
the data requires the same key or password that was used to encrypt it.
Encryption in BTW is based on the same passkey or Link Key that is used for Authentication. If
Authentication is not enabled, the key will not be available and encryption will not take place.
Link Key
A Link Key is a unique, internally generated access code. Link Keys are generated automatically
when devices are paired or when authentication is enabled.
Link Keys are created by combining the following three items:
• The Passkey
• The Bluetooth Device Address
• An internally generated random number
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