Floppy-size group signatures from lattices

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August undefined, 2024

WebIn this work, we introduce the ﬁrst constant-size group signature from lattices, which means that the size of signatures produced by the scheme is independent of Nand only … WebJan 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 …

Forward-Secure Group Signatures from Lattices - arXiv

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 … WebSimpler 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 … in 1995 there were in washington d.c. about

Floppy-Sized Group Signatures from Lattices SpringerLink

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... WebIn 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. WebFeb 18, 2024 · Multi-group signature (MGS), introduced by Ateniese and Tsudik (FC’99), is a proper generalization of group signature. It allows signers to sign messages anonymously on behalf of multiple groups and has extensive applications in … in 1995 what honor was bestowed on brad

Better Zero-Knowledge Proofs for Lattice Encryption and …

WebAbstract. We present the rst lattice-based group signature scheme whose cryptographic artifacts are of size small enough to be usable in practice: for a group of 225 users, … Consider the polynomial ring \mathcal {R}_{q}=\mathbb {Z}_q/\langle \mathbf {x}^n+1\rangle for a prime q\equiv 5\text { mod }8. Elements in the ring are polynomials of degree at most n-1 with coefficients in \left[ -(q-1)/2,(q-1)/2\right] and operations between ring elements are done modulo q. Let \deg … See more ([29, Lemma 2.2]). Let \mathcal {R}_{q}=\mathbb {Z}_q[\mathbf {x}]/\langle \mathbf {x}^n+1\rangle where n>1 is a power of 2 and q is a prime congruent to 5\text { mod }8. This ring has exactly 2q^{n/2}-1 elements … See more (cf. [2, Lemma 1.5], [27, Lemma 4.4]). Let \mathbf {A}\in \mathbb {Z}^{n\times m} with 2^{11}< m and \mathbf {u}\in \mathbb {Z}^n_q. For \sigma … See more For \mathbf {a},\mathbf {b}\in \mathcal {R}_{q} it holds: \Vert \mathbf {a}\mathbf {b} \Vert _\infty \le \min \left\{ \Vert \mathbf {a} \Vert _\infty \Vert \mathbf {b} \Vert _1,(q-1)/2\right\} . … See more An integer lattice is an additive subgroup of \mathbb {Z}^n. Every lattice \varLambda is generated by a basis \mathbf {B}=\{\mathbf {b}_1,\ldots ,\mathbf {b}_k\}\in \mathbb {Z}^{n\times m}, where m is called … See more in 1999 sean fanning john fanningWebThe 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). in 1992 john gray wrote a book

"WebIn this work, we introduce the ﬁrst constant-size group signature from lattices, which means that the size of signatures produced by the scheme is independent of Nand only … " - Floppy-size group signatures from lattices

Floppy-size group signatures from lattices

Simpler Efﬁcient Group Signatures from Lattices - IACR

WebJan 7, 2024 · A New Constant-Size Group Signature Scheme From Lattices Abstract: A lattice-based group signature scheme (LGSS) is an active cryptographic primitive, … Web[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 …

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Webtool led to the design of elegant compact group signatures [10,25] whose security relies on pairing-related assumptions. The resulting signatures typically consist in a constant number of elements of a group admitting a secure and e cient bilinear map. Lattices and Group Signatures. Lattices are emerging as a promising al- WebFloppy-Sized Group Signatures from Lattices Cecilia Boschini 1;2( ), Jan Camenisch , and Gregory Neven 1 IBM Research, Zurich, Switzerland ... Abstract. We present the rst …

WebMay 15, 2024 · Floppy-Sized Group Signatures from Lattices. We present the first lattice-based group signature scheme whose cryptographic artifacts are of size small enough … WebThe 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

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 … WebMar 1, 2024 · Lattice-based group signature is an active research topic in recent years. Since the pioneering work by Gordon, Katz and Vaikuntanathan (Asiacrypt 2010), ten other schemes have been proposed, providing various improvements in terms of security, efficiency and functionality.

WebConstant-size group signatures from lattices. In PKC 2024, volume 10770 of LNCS, pages 58-88. Springer, 2024. 3.San Ling, Khoa Nguyen, Huaxiong Wang, and Yanhong Xu. Forward-secure group signatures from lattices. CoRR, abs/1801.08323, 2024. Submitted to PQCrypto 2024. 4.San Ling, Khoa Nguyen, Huaxiong Wang, and Yanhong Xu. Lattice …

WebIn this work, we introduce the ﬁrst constant-size group signature from lattices, which means that the size of signatures produced by the scheme is independent of Nand only depends on the security parameter λ. More precisely, in our scheme, the sizes of signatures, public key and users’ se-cret keys are all of order Oe(λ). The scheme ... in 19 days what day will it beWebAbstract. A group signature allows a group member to anonymously sign mes-sages on behalf of the group. In the past few years, new group signatures based on lattice problems have appeared: the most efﬁcient lattice-based constructions are due to Laguillaumie et al. (Asiacrypt ’13) and Langlois et al. (PKC ’14). Both in 1996 i was a 23 year old surgeryWebThis 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}\\) … in 1997 the irs made llcsWebMore 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 ... in 1998 the navy launched tomahawk missile in 1996 pm of indiaWebJan 25, 2024 · This paper describes the first lattice-based group signature schemes where the signature and public key sizes are essentially logarithmic in N (for any fixed security level) and proves the security of the schemes in the random oracle model under the SIS and LWE assumptions. 135 PDF in 1998 when undertaker threw mankindWebJan 7, 2024 · At PKC 2024, Ling, Nguyen, Wang and Xu presented the first constant-size group signature scheme under lattice assumptions. Its design is based on a zero-knowledge argument of the knowledge of a ... in 1999 humphrey bogart 1899