Visible to the public Rate Adaptive Reconciliation Based on Reed-Solomon Codes

TitleRate Adaptive Reconciliation Based on Reed-Solomon Codes
Publication TypeConference Paper
Year of Publication2021
AuthorsCheng, Junyuan, Jiang, Xue-Qin, Bai, Enjian, Wu, Yun, Hai, Han, Pan, Feng, Peng, Yuyang
Conference Name2021 6th International Conference on Communication, Image and Signal Processing (CCISP)
Keywordscomposability, forward error correction, Information filters, information reconciliation, key generation, Metrics, Physical layer, pubcrawl, Quantization (signal), rate adaptive, Reed-Solomon codes, Resiliency, security, Wireless communication, Wireless sensor networks, Zigbee
AbstractSecurity of physical layer key generation is based on the randomness and reciprocity of wireless fading channel, which has attracted more and more attention in recent years. This paper proposes a rate adaptive key agreement scheme and utilizes the received signal strength (RSS) of the channel between two wireless devices to generate the key. In conventional information reconciliation process, the bit inconsistency rate is usually eliminated by using the filter method, which increases the possibility of exposing the generated key bit string. Building on the strengths of existing secret key extraction approaches, this paper develops a scheme that uses Reed-Solomon (RS) codes, one of forward error correction channel codes, for information reconciliation. Owing to strong error correction performance of RS codes, the proposed scheme can solve the problem of inconsistent key bit string in the process of channel sensing. At the same time, the composition of RS codes can help the scheme realize rate adaptation well due to the construction principle of error correction code, which can freely control the code rate and achieve the reconciliation method of different key bit string length. Through experiments, we find that when the number of inconsistent key bits is not greater than the maximum error correction number of RS codes, it can well meet the purpose of reconciliation.
DOI10.1109/CCISP52774.2021.9639332
Citation Keycheng_rate_2021