Results 31 to 40 of about 9,864,367 (308)

Almost Fully Secured Lattice-Based Group Signatures with Verifier-Local Revocation

open access: yesCryptography, 2020
An efficient member revocation mechanism is a desirable feature when group signature schemes are applied in practical scenarios. Revocation methods, such as verifier-local revocation (VLR), provide an efficient member revocation in applications of group ...
Maharage Nisansala Sevwandi Perera   +1 more
doaj   +1 more source

A unified approach to combinatorial key predistribution schemes for sensor networks [PDF]

open access: yes, 2012
There have been numerous recent proposals for key predistribution schemes for wireless sensor networks based on various types of combinatorial structures such as designs and codes.
Paterson, Maura B.   +3 more
core   +1 more source

Optimization of Group Incentive Schemes

open access: yesAutomation and Remote Control, 2023
This paper considers the problem of motivating the reduction of project duration. The duration cuts of project works and the corresponding costs are given. A group incentive scheme is used to compensate for the costs. In this scheme, all works are partitioned into groups and a unified incentive scheme is applied for each group.
Vladimir N. Burkov   +2 more
openaire   +1 more source

How not to secure wireless sensor networks: a plethora of insecure polynomial‐based key pre‐distribution schemes

open access: yesIET Information Security, 2021
Three closely related polynomial‐based group key pre‐distribution schemes have recently been proposed, aimed specifically at wireless sensor networks.
Chris J Mitchell
doaj   +1 more source

Characterization of the Group Association Scheme of the Symmetric Group

open access: yesEuropean Journal of Combinatorics, 1998
Let \(G\) be a finite group. Let \(C_0, C_1,\dots, C_d\) be the conjugacy classes of \(G\). Define relations \(R_i\) (\(i=0,1,\dots,d\)) on \(G\) by \(R_i=\{(x,y):yx^{-1}\in C_i\}\). Then \({\mathcal X}(G)=(G,\{R_i\}_{0 \leq i \leq d})\) is a commutative association scheme of \(G\). Let \(G=S_n\) be the symmetric group of degree \(n\). Let \(\Lambda(n)\
Masato Tomiyama, Norio Yamazaki
openaire   +3 more sources

On Nori’s Fundamental Group Scheme [PDF]

open access: yes, 2008
We determine the quotient category which is the representation category of the kernel of the homomorphism from Nori's fundamental group scheme to its étale and local parts. Pierre Deligne pointed out an error in the first version of this article. We profoundly thank him, in particular for sending us his enlightning example reproduced in Remark 2.4 2).
Esnault, Hélène   +2 more
openaire   +2 more sources

Association schemes for diagonal groups [PDF]

open access: yesAustralas. J Comb., 2019
For any finite group $G$, and any positive integer $n$, we construct an association scheme which admits the diagonal group $D_n(G)$ as a group of automorphisms. The rank of the association scheme is the number of partitions of $n$ into at most $|G|$ parts, so is $p(n)$ if $|G|\ge n$; its parameters depend only on $n$ and $|G|$.
Cameron, Peter J., Eberhard, Sean
openaire   +4 more sources

Quasi-linear analysis of dispersion relation preservation for nonlinear schemes

open access: yesAdvances in Aerodynamics, 2022
In numerical simulations of complex flows with discontinuities, it is necessary to use nonlinear schemes. The spectrum of the scheme used has a significant impact on the resolution and stability of the computation.
Fengyuan Xu   +3 more
doaj   +1 more source

Constructions for infinitesimal group schemes [PDF]

open access: yesTransactions of the American Mathematical Society, 2011
55 pages. This is a final version to appear in Transactions of the AMS. Significantly revised from the original preprint.
Friedlander, Eric M., Pevtsova, Julia
openaire   +2 more sources

Secure Obfuscation for Encrypted Group Signatures. [PDF]

open access: yesPLoS ONE, 2015
In recent years, group signature techniques are widely used in constructing privacy-preserving security schemes for various information systems. However, conventional techniques keep the schemes secure only in normal black-box attack contexts.
Yang Shi   +3 more
doaj   +1 more source

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