상세정보
학술지
Threshold Secret Sharing Transmission against Passive Eavesdropping in MIMO Wireless Networks
- 발행일
- 201810
- 출처
- Wireless Communications and Mobile Computing, v.2018, pp.1-7
- ISSN
- 1530-8669
- 출판사
- John Wiley & Sons
- 협약과제
- 18ZF1100, 다점대다점 환경에서 이론적 한계도달을 위한 무선전송 기술 개발, 김근영
- 초록
- We propose a threshold secret sharing scheme for secure communications in multiple input and multiple output wireless networks. In the proposed scheme, the base station divides the secret data into Nmin parts using a polynomial of degree T-1 (T?돞Nmin) and transmits the divided data to the legitimate user by beamforming with multiple spatial dimensions. Then, at the user, the secret data can be reconstructed with a sufficient number (?돟T) of divided parts by using the Lagrange interpolating polynomial. However, it is difficult for the eavesdropper to correctly estimate the T parts due to the difference between the main channel with beamforming and the eavesdropping channel in the physical layer, which results in the failure of secret data reconstruction. The numerical results show that the eavesdropping probability of the proposed scheme is lower than those of conventional schemes. Moreover, we analyze the symbol-error-rate and show that the theoretical result is well aligned with simulation results.
- KSP 제안 키워드
- Eavesdropping channel, Eavesdropping probability, Lagrange interpolating polynomial, Main channel, Multiple input multiple output(MIMO), Numerical results, Physical Layer, Sampling Time(Ts), Secure Communication, Threshold secret sharing scheme, Wireless network