Bluetooth Security Features
This section provides an overview of the security mechanisms included in the Bluetooth specifications to illustrate their limitations and provide a foundation for some of the security recommendations in Section 4. A high-level example of the scope of the security for the Bluetooth radio path is depicted in Figure 3-1. In this example, Bluetooth security is provided only between the mobile phone and the laptop computer, while IEEE 802.11 security protects the wireless local area network link between the laptop and the IEEE 802.11 AP. However, the communications on the wired network are not protected by Bluetooth or IEEE 802.11 security capabilities. End-to-end security is not possible without using higherlayer security solutions in addition to the security features included in the Bluetooth specification and IEEE 802.11 standards.
- Authentication: verifying the identity of communicating devices. User authentication is not provided natively by Bluetooth.
- Confidentiality: preventing information compromise caused by eavesdropping by ensuring that only authorized devices can access and view data.
- Authorization: allowing the control of resources by ensuring that a device is authorized to use a service before permitting it to do so.
- Link Key Generation : As mentioned in Section 3.1, there are two methods in which link key generation is performed for Bluetooth.
- Trust Levels, Service Levels, and Authorization : In addition to the four security modes, Bluetooth allows two levels of trust and three levels of service security.
The three security services offered by Bluetooth and details about the modes of security are described below. Bluetooth does not address other security services such as audit and non-repudiation; if such services are needed, they must be provided through additional means.
Category Article Bluetooth, Bluetooth Security Features
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