CAJ | 학술논문

智能电表之间通常需要进行连续双向身份认证，而现有的基于加密的上层身份认证技术不适用于资源受限的智能电表系统。已有的物理层辅助身份认证机制仅能实现接收端到源的单向认证，不能满足智能电表之间双向通信的认证需求。文中提出一种适用于智能电表系统中的双向物理层辅助认证方案，该方案在完成基于PKI的初始消息认证后，在后续认证中使用物理层认证而无须依赖上层认证。基于IEEE802.11.4g标准的仿真结果表明，该方案能够实现快速双向身份认证，更适用于智能电表系统。
지능전표지간통상수요진행련속쌍향신빈인증，이현유적기우가밀적상층신빈인증기술불괄용우자원수한적지능전표계통。이유적물리층보조신빈인증궤제부능실현접수단도원적단향인증，불능만족지능전표지간쌍향통신적인증수구。문중제출일충괄용우지능전표계통중적쌍향물리층보조인증방안，해방안재완성기우PKI적초시소식인증후，재후속인증중사용물리층인증이무수의뢰상층인증。기우IEEE802.11.4g표준적방진결과표명，해방안능구실현쾌속쌍향신빈인증，경괄용우지능전표계통。
Continuous bi-directional authentication is usually required between the smart meters,and however the existing upper-layer authentication technology based on encryption is not applicable to the resource-limited smart meters. Furthermore,the current physical layer assist authentication schemes could merely realize the one-way authentication from receiving terminal to source and not satisfy the authentication of bi-directional communication. This paper proposes a bi-directional physical layer-assist authentication scheme between smart meters. After initial message authentication based on PKI,physical-layer authentication is adopted in the follow-up authentication instead of relying on upper-layer authentication. Simulation results under IEEE 802.15.4g standard illustrate that this proposed scheme can achieve fast bi-directional authentication and is more applicable for smart meter system.