Higher Rate Secret Key Formation (HRKF) based on Physical Layer for Securing Vehicle-to-Vehicle Communication

  • Inka Trisna Dewi Politeknik Elektronika Negeri Surabaya
  • Amang Sudarsono Politeknik Elektronika Negeri Surabaya
  • Prima Kristalina Politeknik Elektronika Negeri Surabaya
  • Mike Yuliana Politeknik Elektronika Negeri Surabaya
Keywords: V2V security, RSS, Polynomial Regression


One effort to secure vehicle-to-vehicle (V2V) communication is to use a symmetrical cryptographic scheme that requires the distribution of shared secret keys. To reduce attacks on key distribution, physical layer-based key formation schemes that utilize the characteristics of wireless channels have been implemented. However, existing schemes still produce a low bit formation rate (BFR) even though they can reach a low bit error rate (BER). Note that V2V communication requires a scheme with high BFR in order to fulfill its main goal of improving road safety. In this research, we propose a higher rate secret key formation (HRKF) scheme using received signal strength (RSS) as a source of random information. The focus of this research is to produce keys with high BFR without compromising BER. To reduce bit mismatch, we propose a polynomial regression method that can increase channel reciprocity. We also propose a fixed threshold quantization (FTQ) method to maintain the number of bits so that the BFR increases. The test results show that the HRKF scheme can increase BFR from 40% up to 100% compared to existing research schemes. To ensure the key cannot be guessed by the attacker, the HRKF scheme succeeds in producing a key that meets the randomness of the NIST test.


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How to Cite
Dewi, I. T., Sudarsono, A., Kristalina, P., & Yuliana, M. (2020). Higher Rate Secret Key Formation (HRKF) based on Physical Layer for Securing Vehicle-to-Vehicle Communication. EMITTER International Journal of Engineering Technology, 8(1), 140-160. https://doi.org/10.24003/emitter.v8i1.493