Indexed by:
期刊论文
First Author:
Zhan, Furui
Correspondence Author:
Zhan, FR (reprint author), Dalian Univ Technol, Sch Comp Sci & Technol, Dalian, Peoples R China.
Co-author:
Yao, Nianmin
Date of Publication:
2017-05-31
Journal:
KSII TRANSACTIONS ON INTERNET AND INFORMATION SYSTEMS
Included Journals:
SCIE、EI、Scopus
Document Type:
J
Volume:
11
Issue:
5
Page Number:
2701-2722
ISSN No.:
1976-7277
Key Words:
Key generation; wireless channel reciprocity; discrete cosine
transformation; received signal strength; heterogeneous devices
Abstract:
Key generation is essential for protecting wireless networks. Based on wireless channel reciprocity, transceivers can generate shared secret keys by measuring their communicating channels. However, due to non-simultaneous measurements, asymmetric noises and other interferences, channel measurements collected by different transceivers are highly correlated but not identical and thus might have some discrepancies. Further, these discrepancies might lead to mismatches of bit sequences after quantization. The referred mismatches significantly affect the efficiency of key generation. In this paper, an efficient key generation scheme leveraging wireless channel reciprocity is proposed. To reduce the bit mismatch rate and enhance the efficiency of key generation, the involved transceivers separately apply discrete cosine transform (DCT) and inverse discrete cosine transform (IDCT) to pre-process their measurements. Then, the outputs of IDCT are quantified and encoded to establish the bit sequence. With the implementations of information reconciliation and privacy amplification, the shared secret key can be generated. Several experiments in real environments are conducted to evaluate the proposed scheme. During each experiment, the shared key is established from the received signal strength (RSS) of heterogeneous devices. The results of experiments demonstrate that the proposed scheme can efficiently generate shared secret keys between transceivers.
Translation or Not:
no
