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http://dx.doi.org/10.13089/JKIISC.2019.29.2.299

Personal Information Management System with Blockchain Using zk-SNARK  

Lee, Jeong-hyuk (Hanyang University)
Hwang, Jung Yeon (Electronics and Telecommunications Research Institute)
Oh, Hyun-ok (Hanyang University)
Kim, Ji-hye (Kookmin University)
Publication Information
Journal of the Korea Institute of Information Security & Cryptology / v.29, no.2, 2019 , pp. 299-308 More about this Journal
Abstract
As the utilization value of personal information becomes higher, discussions about providing personal information are being conducted actively. One of the most common methods of providing personal information is that a group obtains a personal information with a consent of individual. However, the above method has 2 problems. First, more information is exposed than the information required by organization for utilization of personal information. Second, trusted party should provide organization with an authentication of personal information whenever they require personal information. To solve these problems, we propose a personal information management system with blockchain using zk-SNARK(zero-knowledge Succinct Non-interactive ARgument of Knowledge) for privacy. Our proposal enables individuals to guarantee reliability of their information and protect their privacy concurrently using zk-SNARK when they provid organization with their personal information. In addition, it is possible to manage the personal information data while ensuring the integrity of the data using blockchain and it is possible to share the personal information more conveniently than existing systems.
Keywords
zk-SNARK; blockchain; personal information management; NIZK;
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