NDLI: LINCOS: A Storage System Providing Long-Term Integrity, Authenticity, and Confidentiality

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LINCOS: A Storage System Providing Long-Term Integrity, Authenticity, and Confidentiality

Content Provider	ACM Digital Library
Author	Fujiwara, Mikio Demirel, Denise Braun, Johannes Moriai, Shiho Sasaki, Masahide Geihs, Matthias Waseda, Atsushi Buchmann, Johannes
Abstract	The amount of digital data that requires long-term protection of integrity, authenticity, and confidentiality grows rapidly. Examples include electronic health records, genome data, and tax data. In this paper we present the secure storage system LINCOS, which provides protection of integrity, authenticity, and confidentiality in the long-term, i.e., for an indefinite time period. It is the first such system. It uses the long-term integrity scheme COPRIS, which is also presented here and is the first such scheme that does not leak any information about the protected data. COPRIS uses information-theoretic hiding commitments for confidentiality-preserving integrity and authenticity protection. LINCOS uses proactive secret sharing for confidential storage of secret data. We also present implementations of COPRIS and LINCOS. A special feature of our LINCOS implementation is the use of quantum key distribution and one-time pad encryption for information-theoretic private channels within the proactive secret sharing protocol. The technological platform for this is the Tokyo QKD Network, which is one of worlds most advanced networks of its kind. Our experimental evaluation establishes the feasibility of LINCOS and shows that in view of the expected progress in quantum communication technology, LINCOS is a promising solution for protecting very sensitive data in the cloud.
Starting Page	461
Ending Page	468
Page Count	8
File Format	PDF
ISBN	9781450349444
DOI	10.1145/3052973.3053043
Language	English
Publisher	Association for Computing Machinery (ACM)
Publisher Date	2017-04-02
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Timestamps Commitments Long-term security Quantum key distribution Secure storage
Content Type	Text
Resource Type	Article

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