Fair Traceable Multi-Group Signatures

Benjumea, Vicente; Choi, Seung Geol; López, Javier; Yung, Moti

doi:10.1007/978-3-540-85230-8_21

Cited by 23 publications

(16 citation statements)

References 24 publications

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“…It would be interesting to see if TS systems can be even more efficiently obtained without sacrificing security guarantees in the standard model. Another open problem would be to extend the results of [10] and design multi-group extensions of traceable signatures outside the random oracle heuristic.…”

Section: Resultsmentioning

confidence: 99%

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Efficient Traceable Signatures in the Standard Model

Libert

Yung

2009

Pairing-Based Cryptography – Pairing 2009

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Abstract. Traceable signatures (TS), suggested by Kiayias, Tsiounis and Yung (Eurocrypt'04), extend group signatures to address various basic traceability issues beyond merely identifying the anonymous signer of a rogue signature. Namely, they enable the efficient tracing of all signatures produced by a misbehaving party without opening the identity of other parties. They also allow users to provably claim ownership of a previously signed anonymous signature. To date, known TS systems all rely on the random oracle model. In this work we present the first realization of the primitive that avoids resorting to the random oracle methodology in its security proofs. Furthermore, our realization's efficiency is comparable to that of nowadays' fastest and shortest standard model group signatures.

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Section: Resultsmentioning

confidence: 99%

“…More recently, Benjumea el al. [10] considered traceable signatures with extended capabilities in the multi-group setting and implemented them in the random oracle model.…”

Section: Introductionmentioning

confidence: 99%

Efficient Traceable Signatures in the Standard Model

Libert

Yung

2009

Pairing-Based Cryptography – Pairing 2009

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“…This may be done by publishing the trapdoor used for open, publishing the trapdoor used as trace, or just enabling an authority for answering this kind of status requests. Some schemes modify this basic scenario, by dividing GM in multiple authorities for the tasks related to managing the group [6]; or add new authorities for performing other delicate tasks, like tracing revoked group members [34].…”

Section: Group Signaturesmentioning

confidence: 99%

Non-conventional Digital Signatures and Their Implementations—A Review

Arroyo

Díaz

Rodrı́guez

2015

Advances in Intelligent Systems and Computing

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Esta es la versión de autor de la comunicación de congreso publicada en: This is an author produced version of a paper published in: Abstract. The current technological scenario determines a profileration of trust domains, which are usually defined by validating the digital identity linked to each user. This validation entails critical assumptions about the way users' privacy is handled, and this calls for new methods to construct and treat digital identities. Considering cryptography, identity management has been constructed and managed through conventional digital signatures. Nowadays, new types of digital signatures are required, and this transition should be guided by rigorous evaluation of the theoretical basis, but also by the selection of properly verified software means. This latter point is the core of this paper. We analyse the main non-conventional digital signatures that could endorse an adequate tradeoff betweeen security and privacy. This discussion is focused on practical software solutions that are already implemented and available online. The goal is to help security system designers to discern identity management functionalities through standard cryptographic software libraries.

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“…Other settings with several parallel group signatures have already been introduced. Multi-group signatures [1,3] enable a user to sign on behalf of either a single group or several groups to which he belongs. The notion of hierarchy between group signatures has been introduced in [14], where having a key for an upper group allows to sign on behalf of lower groups.…”

Section: Introductionmentioning

confidence: 99%

Cross-Unlinkable Hierarchical Group Signatures

Bringer¹,

Chabanne²,

Patey³

2013

Public Key Infrastructures, Services and Applications

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Abstract. We introduce the notion of Cross-Unlinkability for group signature schemes. Considering groups organized in a tree structure, where belonging to the parent group is required to join a new group, CrossUnlinkability enables a cascade revocation process that takes into account the underlying tree structure, while ensuring anonymity for nonrevoked users, in particular, towards the managers of the other groups. We show how to achieve Cross-Unlinkability using the Verifier-Local Revocation group signature scheme of Bringer and Patey at Secrypt 2012, by exploiting its property of Backward Unlinkability.

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Fair Traceable Multi-Group Signatures

Cited by 23 publications

References 24 publications

Efficient Traceable Signatures in the Standard Model

Efficient Traceable Signatures in the Standard Model

Non-conventional Digital Signatures and Their Implementations—A Review

Cross-Unlinkable Hierarchical Group Signatures

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