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2018 | OriginalPaper | Buchkapitel

Post-Quantum One-Time Linkable Ring Signature and Application to Ring Confidential Transactions in Blockchain (Lattice RingCT v1.0)

verfasst von : Wilson Abel Alberto Torres, Ron Steinfeld, Amin Sakzad, Joseph K. Liu, Veronika Kuchta, Nandita Bhattacharjee, Man Ho Au, Jacob Cheng

Erschienen in: Information Security and Privacy

Verlag: Springer International Publishing

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Abstract

In this paper, we construct a Lattice-based one-time Linkable Ring Signature (L2RS) scheme, which enables the public to verify if two or more signatures were generated by same signatory, whilst still preserving the anonymity of the signatory. The L2RS provides unconditional anonymity and security guarantees under the Ring Short Integer Solution (Ring-SIS) lattice hardness assumption. The proposed L2RS scheme is extended to be applied in a protocol that we called Lattice Ring Confidential transaction (Lattice RingCT) v1.0, which forms the foundation of the privacy-preserving protocol in any post-quantum secure cryptocurrency such as Hcash.

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Vorheriges Kapitel Anonymous Identity-Based Hash Proof System from Lattices in the Standard Model

Nächstes Kapitel Secure Contactless Payment

The Ring-SIS and Ring-LWE refer to the Ring mathematical structure and differ from the Ring in the Ring Signature scheme.

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Titel: Post-Quantum One-Time Linkable Ring Signature and Application to Ring Confidential Transactions in Blockchain (Lattice RingCT v1.0)
verfasst von: Wilson Abel Alberto Torres
Ron Steinfeld
Amin Sakzad
Joseph K. Liu
Veronika Kuchta
Nandita Bhattacharjee
Man Ho Au
Jacob Cheng
Verlag: Springer International Publishing
Buch: Information Security and Privacy
Print ISBN: 978-3-319-93637-6

Electronic ISBN: 978-3-319-93638-3

Copyright-Jahr: 2018
DOI: https://doi.org/10.1007/978-3-319-93638-3_32

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