디지털융복합연구 (Journal of Digital Convergence)

  • 제19권8호
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  • Pages.205-217
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  • 2021
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  • 2713-6434(pISSN)
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  • 2713-6442(eISSN)
한국디지털정책학회 (The Society of Digital Policy and Management)
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재구성된 영지식 증명을 활용한 탈중앙형 자기 주권 신원의 안전한 비식별화 및 데이터 주권 관리

Secure De-identification and Data Sovereignty Management of Decentralized SSI using Restructured ZKP

  • 조강우 (부경대학교 정보보호학과) ;
  • 전미현 (부경대학교 정보보호학과) ;
  • 신상욱 (부경대학교 IT융합응용공학과)
  • Cho, Kang-Woo (Dept. of Information Security, Pukyong National University) ;
  • Jeon, Mi-Hyeon (Dept. of Information Security, Pukyong National University) ;
  • Shin, Sang Uk (Dept. of IT Convergence and Application Eng., Pukyong National University)
  • 투고 : 2021.05.10
  • 심사 : 2021.08.20
  • 발행 : 2021.08.28
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⟨ 이전 논문 다음 논문 ⟩

초록

탈중앙형 SSI(Self Sovereign Identity)가 새로운 디지털 신원 식별 기술의 대안으로 등장하였으나 이는 데이터 거래의 고유 알고리즘 특성으로 인해 효율적인 비식별화 기법이 제안되지 않았다. 본 논문에서는 SSI의 탈중앙형 동작을 보장하기 위해 ZKP(Zero Knowledge Proof)의 검증 결과를 검증인 측에서 외부에 제공 가능한 형태로 재구성함으로써 식별자를 제거하지 않는 비식별 기술을 제안한다. 또한, 이는 검증 참여 각 개체에 대한 차등 주권 관리 개념을 제안하는 것으로 재구성된 비식별 데이터를 정보주체의 동의 없이 제공할 수 있다. 결과적으로 제안 모델은 탈중앙형 SSI 환경에서 국내 개인정보보호법을 만족하고, 안전하며 효율적인 비식별 처리 및 주권 관리를 제공한다.

Decentralized SSI(Self Sovereign Identity) has become an alternative to a new digital identity solution, but an efficient de-identification technique has not been proposed due to the unique algorithmic characteristics of data transactions. In this study, to ensure the decentralized operation of SSI, we propose a de-identification technique that does not remove identifiers by restructuring the verification results of ZKP (Zero Knowledge Proof) into a form that can be provided to the outside by the verifier. In addition, it is possible to provide restructured de-identification data without the consent of data subject by proposing the concept of differential sovereignty management for each entity participating in verification. As a result, the proposed model satisfies the domestic personal information protection law in a decnetralized SSI, in addition provides secure and efficient de-identification processing and sovereignty management.

키워드

과제정보

This research was supported by Basic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education (No. 2019R1I1A3A01060652), and a part of the project titled 'Future fisheries food research center', funded by the Ministry of Oceans and Fisheries, Korea.

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