Results 1 to 10 of about 50 (50)
Group Signature Without Random Oracles from Randomizable Signatures [PDF]
, 2020 Group signature is a central tool for privacy-preserving protocols, ensuring authentication, anonymity and accountability. It has been massively used in cryptography, either directly or through variants such as direct anonymous attestations. However, it remains a complex tool, especially if one wants to avoid proving security in the random oracle model.
Clarisse, Rémi, Sanders, Olivier
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Group Signatures in Practice [PDF]
, 2015 This work has been partially supported under the framework of the international cooperation program managed by National Research Foundation of Korea (NRF- 2013K2A1A2053670) and by Comunidad de Madrid (Spain) under the project S2013/ICE-3095-CM (CIBERDINE).
Gayoso Martínez, Víctor +2 more
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, 2012 We initiate the study of unique group signature such that signatures of the same message by the same user will always have a large common component (i.e., unique identifier). It enables an efficient detection algorithm, revealing the identities of illegal users, which is fundamentally different from previous primitives.
Matthew Franklin, Haibin Zhang
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Group actions and higher signatures [PDF]
Proceedings of the National Academy of Sciences, 1985 Let π be a nontrivial finite group and M be a closed manifold. An interesting question is whether or not M has the R -homology type of a manifold admitting a free π action. Here this problem is studied for actions that are “homologically trivial.” If π 1
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A traceable group signature scheme
Mathematical and Computer Modelling, 2000 zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Chen, Jonathan Jen-Rong, Liu, Yuanchi
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Electronics Letters, 1997 The authors present an ID-based group signature which is based on ordinary ID-based signature schemes such as Ohta-Okamoto's scheme and Guillou-Quisquater's scheme. Thus, the group signature is verified from the identities of group members. A signer proves that, by verifiable encryption of his ordinary signature, a group authority can identify him and,
null Park, null Kim, null Won
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Linkable Democratic Group Signatures [PDF]
, 2006 In a variety of group-oriented applications cryptographic primitives like group signatures or ring signatures are valuable methods to achieve anonymity of group members. However, in their classical form, these schemes cannot be deployed for applications that simultaneously require (i) to avoid centralized management authority like group manager and (ii)
Mark Manulis +2 more
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Convertible Group Undeniable Signatures [PDF]
, 2003 Group undeniable signatures are like ordinary group signatures except that verifying signatures needs the help of the group manager. In this paper, we propose a convertible group undeniable signature scheme in which the group manager can turn all or selective signatures, which are originally group undeniable signatures, into ordinary group signatures ...
Lyuu, Yuh-Dauh, Wu, Ming-Luen
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Foundations of Fully Dynamic Group Signatures [PDF]
Journal of Cryptology, 2016 AbstractGroup signatures allow members of a group to anonymously sign on behalf of the group. Membership is administered by a designated group manager. The group manager can also reveal the identity of a signer if and when needed to enforce accountability and deter abuse.
Bootle J +4 more
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Group Signature Schemes Using Braid Groups
, 2006 Artin's braid groups have been recently suggested as a new source for public-key cryptography. In this paper we propose the first group signature schemes based on the conjugacy problem, decomposition problem and root problem in the braid groups which are believed to be hard problems.
Thomas, Tony, Lal, Arbind Kumar
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