Unbreakable distributed storage with quantum key distribution network and password-authenticated secret sharing
Mikio Fujiwara, Atsushi Waseda, Ryo Nojima, Shiho Moriai, Wakaha, Ogata, and Masahide Sasaki

TL;DR
This paper presents a secure distributed storage system combining password-authenticated secret sharing with quantum key distribution to ensure information-theoretic security over long-distance networks.
Contribution
It introduces a novel distributed storage approach that integrates quantum key distribution with password-authenticated secret sharing for enhanced security.
Findings
Successfully demonstrated in Tokyo metropolitan area
Achieved information-theoretic security for data transmission
Enhanced robustness of distributed storage systems
Abstract
Distributed storage plays an essential role in realizing robust and secure data storage in a network over long periods of time. A distributed storage system consists of a data owner machine, multiple storage servers and channels to link them. In such a system, secret sharing scheme is widely adopted, in which secret data are split into multiple pieces and stored in each server. To reconstruct them, the data owner should gather plural pieces. Shamir's (k, n)-threshold scheme, in which the data are split into n pieces (shares) for storage and at least k pieces of them must be gathered for reconstruction, furnishes information theoretic security, that is, even if attackers could collect shares of less than the threshold k, they cannot get any information about the data, even with unlimited computing power. Behind this scenario, however, assumed is that data transmission and authentication…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsQuantum Computing Algorithms and Architecture · Quantum Mechanics and Applications · Quantum Information and Cryptography
