Journal of Industrial Convergence (산업융합연구)

DAEHAN Society of Industrial Management (대한산업경영학회)
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Blockchain-based lightweight consensus algorithm (L-PBFT) for building trust networks in IoT environment

IoT 환경에서 신뢰 네트워크 구축을 위한 블록체인 기반의 경량 합의 알고리즘(L-PBFT)

  • 박중오 (성결대학교 파이데이아학부)
  • Received : 2022.04.14
  • Accepted : 2022.06.20
  • Published : 2022.06.28
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Abstract

With the development of the Internet of Things (IoT), related network infrastructures require new technologies to protect against threats such as external hacking. This study proposes an L-PBFT consensus algorithm that can protect IoT networks based on a blockchain consensus algorithm. We designed a blockchain (private) model suitable for small networks, tested processing performance for ultra-small/low-power IoT devices, and verified stability. As a result of performance analysis, L-PBFT proved that at least the number of nodes complies with the operation of the consensus algorithm(minimum 14%, maximum 29%) and establishes a trust network(separation of secure channels) different from existing security protocols. This study is a 4th industry convergence research and will be a foundation technology that will help develop IoT device security products in the future.

사물인터넷(IoT)의 발달과 함께 관련 네트워크 인프라는 외부 해킹과 같은 위협을 보호할 수 있는 새로운 기술이 요구되고 있다. 본 연구는 블록체인 합의 알고리즘을 기반으로 IoT 네트워크를 보호할 수 있는 L-PBFT 합의 알고리즘을 제안한다. 소규모 네트워크에 적합한 블록체인(Private) 모델을 설계하고, 초소형/저전력 IoT 장치를 대상으로 처리 성능을 테스트하고 안정성을 검증했다. 성능 분석 결과 L-PBFT는 노드 수가 적어도 합의 알고리즘의 동작(최소 14%, 최대 29%)을 준수하고, 기존 보안 프로토콜과 다른 신뢰 네트워크(보안 채널 분리)를 구축함을 증명하였다. 본 연구는 4차 산업 융합연구로써 향후 IoT 장치 보안 제품 개발에 도움이 되는 기반 기술이 될 것이다.

Keywords

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