Floppy-size group signatures from lattices

WebJan 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 … 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 ...

Floppy-Sized Group Signatures from Lattices Zenodo

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. 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 ... popcorn growth https://ptjobsglobal.com

Constant-Size Group Signatures from Lattices SpringerLink

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 WebCecilia Boschini, Jan Camenisch, and Gregory Neven. 2024. Floppy-Sized Group Signatures from Lattices. In ACNS. 163--182. ... San Ling, Khoa Nguyen, and … 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 … popcorn haken

Attribute-Based VLR Group Signature Scheme from Lattices

Category:Group Signatures from Lattices: Simpler, Tighter, Shorter, …

Tags:Floppy-size group signatures from lattices

Floppy-size group signatures from lattices

Attribute-Based VLR Group Signature Scheme from Lattices

WebJan 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

Floppy-size group signatures from lattices

Did you know?

WebMay 21, 2024 · Paper 2024/453 Floppy-Sized Group Signatures from Lattices. Cecilia Boschini, Jan Camenisch, and Gregory Neven Abstract. We present the first lattice … 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 …

WebAbstract. 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 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 … 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 …

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.

WebJan 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 ... popcorn gummyWebWe present the first lattice-based group signature scheme whose cryptographic artifacts are of size small enough to be usable in practice: for a group of $$2^{25}$$ 2 25 users, signatures take 910 kB and public keys are 501 kB. Our scheme builds … sharepoint news post permissionsWebThis 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}\\) … popcorn halloweenWebNov 20, 2024 · In general, the group signature size increases the number of group members. However, the schemes are also proposed with the constant signature size. ... Floppy-Sized Group Signatures from Lattices ... sharepoint news post email notificationWebtool 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- sharepoint news post thumbnail sizeWebThe 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 sharepoint news target news to groupWebJan 7, 2024 · A New Constant-Size Group Signature Scheme From Lattices Abstract: A lattice-based group signature scheme (LGSS) is an active cryptographic primitive, … sharepoint news ticker