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Vulnerability and Enhancement on Bluetooth Pairing and Link Key Generation Scheme for Security Modes 2 and 3

  • Da-Zhi SunEmail author
  • Xiao-Hong Li
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9977)

Abstract

According to adopted Bluetooth standard specifications, we examine the security of the pairing and link key generation scheme for Security Modes 2 and 3. The contribution is threefold. (1) It is demonstrated that the pairing and link key generation scheme for Security Modes 2 and 3 suffers the known-key attack. That is, the attacker without any long-term secret key is able to impersonate the targeted Bluetooth device at any time, once he obtains a short-term secret key, i.e., the initialization key, in its previous successful run. (2) An improved scheme is therefore proposed to overcome the known-key attack. (3) A security model is also presented to check the improved scheme. The improved scheme provably prevents the known-key attack on the original pairing and link key generation scheme for Security Modes 2 and 3. In addition, the improved scheme is more efficient than the original pairing and link key generation scheme.

Keywords

Bluetooth standard Pairing Link key generation Known-key attack Security model Bluetooth device 

Notes

Acknowledgments

We thank the anonymous reviewers for their useful comments. The work of Dr. Da-Zhi Sun was supported in part by the State Scholarship Fund of the China Scholarship Council, in part by the Open Project of Shanghai Key Laboratory of Trustworthy Computing under Grant No. 07dz22304201402, and in part by National Natural Science Foundation of China under Grant Nos. 61003306 and 61272106.

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Copyright information

© Springer International Publishing AG 2016

Authors and Affiliations

  1. 1.School of Computer Science and TechnologyTianjin UniversityTianjinPeople’s Republic of China
  2. 2.State Key Laboratory of Information Security, Institute of Information EngineeringChinese Academy of SciencesBeijingPeople’s Republic of China

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