Floppy-size group signatures from lattices
WebThis work presents the first lattice-based group signature scheme whose cryptographic artifacts are of size small enough to be usable in practice: for a group of \\(2^{25}\\) … WebJul 14, 2024 · More precisely, the proposed scheme is the first attribute-based signature from lattices to support conjunctions, disjunctions, threshold predicates, polynomial evaluations, and CNF/DNF...
Floppy-size group signatures from lattices
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WebJan 18, 2024 · Group signature is a fundamental cryptographic primitive, aiming to protect anonymity and ensure accountability of users. It allows group members to anonymously …
WebFloppy-Sized Group Signatures from Lattices 165 The problem with this approach is that the Lyubashevsky-Neven vfi encryption scheme encrypts the full witness [S ; ¯b ; m¯ ; … WebJul 16, 2015 · I'd like to have you review my understanding/planning for SLOG size and clarify transaction group sizing: System: X8DTN+ / 2x Intel 5520 2.4Ghz / 72GB RAM …
WebMore precisely, signature size, signing and verification costs do not depend on number of time periods Tand other metrics are at most log-squared complexity in T. However, all these schemes are constructions based on number-theoretic ... We introduce the first forward-secure group signature scheme from lattices. The scheme works in Nakanishi ... WebDec 7, 2024 · The only known attribute-based group signature from lattices that has a dynamic feature was put forward by Kuchta et al. [ 14 ]. Their scheme handles the user enrollment problem, however, users cannot be revoked. The support for membership revocation is a desirable functionality for group signature scheme.
Web1.3 Applications to Group Signatures and Credentials Group signatures [12] are schemes that allow members of a group to sign messages on behalf of the group without revealing their identity. In case of a dispute, the group manager can lift a signer’s anonymity and reveal his identity. Currently known group signatures based on lattice ...
WebThe signature size of our isogeny-based construction is an order of magnitude smaller than all previously known post-quantum group signatures (e.g., 6.6 KB for 64 members). In comparison, our lattice-based construction has a larger signature size (e.g., either 126 KB or 89 KB for 64 members depending on the satisfied security property). poundland scalesWebThe rst group signature from lattices was introduced by Gordon et al. [GKV10]. While their scheme is of great theoretical interest, its public key and signature have sizes NOe(n2), for ... [GKV10], but the signature size is still linear in N. The linear-size barrier was nally overcome by Laguillaumie et al. [LLLS13], who designed poundland salford precinctWebJan 18, 2024 · signature size Oe(λ(logN+ logT)), group public key size Oe(λ2(logN+ logT)), and secret key size Oe(λ2(logN+ logT)2 logT). In particular, forward security is achieved with a reasonable cost: the size of keys and signatures are at most O(log3 T) larger than those of the basic GS scheme [33] upon which we build ours. Overview of … poundland scarboroughWebSimpler Efficient Group Signatures from Lattices Phong Nguyen1,Jiang Zhang 2, Zhenfeng Zhang 1INRIA, France and Tsinghua University, China 2Institute of Software, Chinese Academy of Sciences PKC 2015 (March 30 — April 1, 2015) NIST — Gaithersburg, Maryland USA Jiang Zhang (TCA) Simpler Efficient Group Signatures from Lattices … poundland salisbury opening hoursWebJan 25, 2024 · To reduce potential damages caused by key exposure attacks, Song (CCS 2001) put forward the concept of forward-secure group signatures (FSGS). For the time being, all known secure FSGS schemes are based on number-theoretic assumptions, and are vulnerable against quantum computers. In this work, we construct the first lattice … poundland salford retail parkWebIn this paper, we provide an improved dynamic GS-VLR over lattices, which is efficient by eliminating a Olog N factor for both sizes. To realize the goal, we adopt a more efficient and compact identity-encoding technique. poundland sandwichesWeb[9] constructed the first constant-size group signature from lattices, and the scheme is based on the DMS. Katsumata et al. [30] made group signatures without NIZK from … poundland saucepan