With the development of ICT technology, it has also been applied to the power grid, but as a target of hackers' attack, a security solution to protect the power grid is being studied. Attribute-based Access Control (ABAC) is one of the most commonly used security solutions by providing granular and flexible access control, but it threatens privacy because it determines access control based on user attribute values. With user privacy emerging as a new topic, Decentralized Identity(DID) is emerging as a new alternative for protecting user privacy. In this paper, we propose a DID-based ABAC to solve the problem of ABAC's privacy exposure and apply it to a power transaction platform.
ACKNOWLEDGMENT This research was supported by \u201cBasic Science Research Program through the National Research Foundation of Korea(NRF) funded by the Ministry of Education, Science and Technology(2018R1D1A1B07048697)\u201d, \u201cKorea Institute for Advancement of Technology(KIAT) grant funded by the Korea Government(MOTIE) (P0008703, The Competency Development Program for Industry Specialist)\u201d, and \u201cthe MSIT(Ministry of Science and ICT), Korea, under the ITRC(Information Technology Research Center) support program(IITP-2020-2018-0-01396) supervised by the IITP(Institute for Information & Communications Technology Planning & Evaluation)\u201d.
