Strong Forward Security in Identity-Based Signcryption

Muñiz, Madeline González; Laud, Peeter

doi:10.1080/09720529.2013.821367

Cited by 5 publications

(2 citation statements)

References 12 publications

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“…Then the data owner can make a policy, that is, a subset of the attributes, so that later only the users meeting the policy can authenticate themselves to the cloud or can decrypt the encrypted data labeled with the policy. Although ABC is very versatile, few attribute‐based signcryption (ABSC) schemes have been proposed . These schemes are either in the random oracle model, which is too weak to provide practical security, or in the standard model but at the cost of large signcryption ciphertext expansion and/or heavy computation burden.…”

Section: Introductionmentioning

confidence: 99%

Threshold attribute‐based signcryption and its application to authenticated key agreement

Zheng

Qin

et al. 2016

Security Comm Networks

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Signcryption is a public key cryptosystem that achieves the functions of digital signature and public key encryption simultaneously. It significantly reduces the cost of traditional signature‐then‐encryption approach. Although a large body of signcryption schemes have been proposed, few works have been done on attribute‐based signcryption (ABSC), which simultaneously achieves the functionalities of attribute‐based encryption and attribute‐based signature, two important cryptographic primitives proposed to enforce fine‐grained access control and user authentication in cloud computing applications. In this paper, we present a threshold ABSC scheme. The scheme is proven secure under the well‐established Decisional Bilinear Diffie–Hellman and the standard Computational Diffie–Hellman assumptions in the standard model. Compared with the state of the ABSC art, our scheme has comparable efficiency without relying on any random oracle. Furthermore, we construct an authenticated key agreement protocol based on this threshold attribute‐based signcryption from the point of improving the security of cloud computing. Copyright © 2016 John Wiley & Sons, Ltd.

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Section: Introductionmentioning

confidence: 99%

Threshold attribute‐based signcryption and its application to authenticated key agreement

Zheng

Qin

et al. 2016

Security Comm Networks

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“…Selvi and others [5] proposed an identitybased threshold signcryption scheme and formally proved its security in the existing security model. Muniz and Laud [6] proposed the first strong forward-secure identity-based signcryption scheme.…”

Section: Introductionmentioning

confidence: 99%

Provably Secure Aggregate Signcryption Scheme

Ren¹

2012

ETRI J

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An aggregate signature scheme is a digital signature scheme that allows aggregation of n distinct signatures by n distinct users on n distinct messages. In this paper, we present an aggregate signcryption scheme (ASC) that is useful for reducing the size of certification chains (by aggregating all signatures in the chain) and for reducing message size in secure routing protocols. The new ASC scheme combines identity‐based encryption and the aggregation of signatures in a practical way that can simultaneously satisfy the security requirements for confidentiality and authentication. We formally prove the security of the new scheme in a random oracle model with respect to security properties IND‐CCA2, AUTH‐CMA2, and EUF‐CMA.

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