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Measures for Error Avalanche and Energy Avalanche Effect in Secure Wireless Fieldbus Systems

China Communications 2019年第2期16卷 202-214页

作者： Bohua Li Yukui Pei Department of Electronic Engineering Tsinghua University Beijing National Research Center for Information Science and Technology Tsinghua Space Center Tsinghua University Research Institute of Tsinghua University in Shenzhen

The wireless fieldbus is a vital part in present industrial automatic controls and software-defined systems. Accompanying, security is an upcoming problem determines its future leapfrog development. Wireless fieldbus systems can be made secure by encrypting the data. Unfortunately, the diffusion character of encryption brings significant vulnerabilities in terms of deteriorated error performance and energy efficiency. In this paper, we first propose an aes-dependent Hsiao(AD-Hsiao) code to improve the error correction capability, which leverages the prior information of data similarity and aes decryption to assist syndrome decoding. Then, we develop "Random Coset" scheme to reduce energy consumption. Based on mapping written data into several data candidates, this scheme lessens the number of bits written to memory and thereby boosts the write energy efficiency. Simulation results show that the AD-Hsiao code can correct majority of double errors in a single codeword with limited latency and area cost as the Hamming code. Moreover, the(72,64) AD-Hsiao code improves the reliability by 102 over the(72,64) Hamming code at 8 dB AWGN channel, and also exceeding the high cost(78,64) BCH code. In addition, the "Random Coset" improves energy efficiency by 6.6～14% than the current scheme while re-quires small ROM storage.

关键词： wireless fieldbus system security reliability energy efficiency aes-dependent Hsiao(AD-Hsiao)code Random Coset

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