Construction of Meta-PKI by Distributed Ledger Technology

2020 Fiscal Year Final Research Report

• Project/Area Number: 19K24342
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Multi-year Fund
• Review Section: 1001:Information science, computer engineering, and related fields
• Research Institution: Nagoya Institute of Technology
• Principal Investigator: Shohei Kakei 名古屋工業大学, 工学(系)研究科(研究院), 助教 (70846302)
• Project Period (FY): 2019-08-30 – 2021-03-31
• Keywords: 公開鍵基盤 / 認証局 / 横断認証 / スマートコントラクト / 分散型台帳技術

Outline of Final Research Achievements

In the data distribution infrastructures that interconnect various devices, it is expected to be created added value through the collaboration of data from different fields. Public key infrastructures (PKIs) are widely used to guaranetee the identity of devices on the Internet, but it is necessary to assume absolute trust in a certification authority, which is the foundation of PKI. Aiming for an infrastructure that supports the interconnection of various devices, we have developed a meta-PKI, which is a decentralized authentication infrastructure that decentralizes the trust points of a certification authority.

Free Research Field

情報セキュリティ

Academic Significance and Societal Importance of the Research Achievements

多様なデバイス・サービスの信頼性を保証しながら相互接続を支える基盤を目指して，本研究では認証局の信頼点を分散する分散型の認証基盤であるメタPKIの開発を行った．認証局を相互に接続する仕組みとして横断認証技術が利用できるが，その実施判断は各認証局で統一できる必要がある．本研究では，横断認証の枠組みをスマートコントラクトで実現することで，全体で統一された基準のもとで横断認証することが可能となる．