Comparison analysis and efficient implementation of reconciliation-based RLWE key exchange protocol
Comparison analysis and efficient implementation of reconciliation-based RLWE key exchange protocol
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基于协调的RLWE密钥交换协议对比分析及高效实现
DOI:
10.1504/ijhpcn.2019.10018687
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发表时间:
2019-01
期刊:
影响因子:
--
通讯作者:
Jiqiang liu
中科院分区:
文献类型:
--
作者:
Xinwei Gao;Jintai Ding;Saraswathy RV;Lin Li;Jiqiang liu
Error reconciliation is an important technique for learning with error (LWE) and ring-LWE (RLWE)-based constructions. In this paper, we present a comparison analysis on two error reconciliation-based RLWE key exchange protocols: Ding et al. in 2012 (DING12) and Bos et al. in 2015 (BCNS15). We take them as examples to explain the core idea of error reconciliation, building key exchange over RLWE problem, implementation and real-world performance, and compare them comprehensively. We also analyse a LWE key exchange 'Frodo' that uses an improved error reconciliation mechanism in BCNS15. To the best of our knowledge, our work is the first to present at least 128-bit classic (80-bit quantum) and 256-bit classic (> 200-bit quantum) secure parameter choices for DING12 with efficient portable C/C++ implementations. Benchmark shows that our efficient implementation is 11× faster than BCNS15 and one key exchange execution only costs 0.07 ms on a four-year-old middle range CPU. Error reconciliation is 1.57× faster than BCNS15.
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