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Long-Term Secure Asymmetric Group Key Agreement

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Innovative Security Solutions for Information Technology and Communications (SecITC 2021)

Part of the book series: Lecture Notes in Computer Science ((LNCS,volume 13195))

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Abstract

A group key agreement protocol allows a set of users to share a common secret in presence of adversaries. In symmetric group key agreement protocol, the set of users will have a secret key at the end of protocol while in an asymmetric group key agreement protocol, the set of users negotiate a shared encryption and decryption keys, instead of establishing a common secret. Long-term security is a notion of resistance against attacks even if later, after completion of the protocol some security assumptions become invalid. In this paper, we propose a long-term secure one-round asymmetric group key agreement protocol. Our protocol is based on Bilinear Diffie-Hellman assumption and real-or random indistinguishability of the symmetric encryption scheme. For authentication purpose we use a signature scheme and timestamps.

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Authors and Affiliations

  1. Department of Mathematics, University of North Georgia, Oakwood, GA, USA

    Kashi Neupane

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  1. Kashi Neupane
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Correspondence to Kashi Neupane .

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Editors and Affiliations

  1. University of Luxembourg, Esch-sur-Alzette, Luxembourg

    Peter Y.A. Ryan

  2. Bucharest University of Economic Studies, Bucharest, Romania

    Cristian Toma

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Neupane, K. (2022). Long-Term Secure Asymmetric Group Key Agreement. In: Ryan, P.Y., Toma, C. (eds) Innovative Security Solutions for Information Technology and Communications. SecITC 2021. Lecture Notes in Computer Science, vol 13195. Springer, Cham. https://doi.org/10.1007/978-3-031-17510-7_20

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  • DOI: https://doi.org/10.1007/978-3-031-17510-7_20

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  • Publisher Name: Springer, Cham

  • Print ISBN: 978-3-031-17509-1

  • Online ISBN: 978-3-031-17510-7

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