Bluetooth Security
Yi Qian, Feng Ye, Hsiao‐Hwa Chen · 2021
This chapter introduces the security of current Bluetooth technology. Bluetooth devices form an ad-hoc network for data transmission. Bluetooth uses a technique called spread spectrum frequency hopping to transmit data among 79 different frequencies. The chapter discusses the details of current Bluetooth security solutions. Bluetooth security is provided because of security threats that may put Bluetooth transmissions at risk. Some Bluetooth specific threats are Bluesnarfing, Bluejacking, Bluebugging, car whisperer, and fuzzing attacks. Bluetooth standard specifies three basic security services: authentication, authorization, and confidentiality. In all Bluetooth security modes 2, 3, and 4, a link key is needed for authentication and encryption algorithms. Security of Bluetooth authentication depends solely on the link key. Bluetooth security mechanisms are based on a few cryptographic functions. An adequate level of knowledge and understanding must be provided for Bluetooth users. The standard passkey must be avoided in Bluetooth connection.