Paper 2022/1138

Designated-Verifier Linkable Ring Signatures with unconditional anonymity

Danai Balla, National Technical University of Athens
Pourandokht Behrouz, National Technical University of Athens
Panagiotis Grontas, National Technical University of Athens
Aris Pagourtzis, National Technical University of Athens
Marianna Spyrakou, National Technical University of Athens
Giannis Vrettos, National Technical University of Athens
Abstract

We propose Designated-Verifier Linkable Ring Signatures with unconditional anonymity, a cryptographic primitive that protects the privacy of signers in two ways: Firstly, it allows them to hide inside a ring (i.e. an anonymity set) they can create by collecting a set of public keys all of which must be used for verification. Secondly, it allows a designated entity to simulate signatures thus making it difficult for an adversary to deduce their identity from the content of the exchanged messages. Our scheme differs from similar proposals since the anonymity guarantees are unconditional.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Preprint.
Keywords
ring signatures unconditional anonymity designated verifier non-transferability linkability
Contact author(s)
balla danai @ gmail com
pbehrouz @ mail ntua gr
pgrontas @ corelab ntua gr
pagour @ cs ntua gr
mspyrakou @ mail ntua gr
gianniszvrettos @ gmail com
History
2022-09-05: approved
2022-08-31: received
See all versions
Short URL
https://ia.cr/2022/1138
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2022/1138,
      author = {Danai Balla and Pourandokht Behrouz and Panagiotis Grontas and Aris Pagourtzis and Marianna Spyrakou and Giannis Vrettos},
      title = {Designated-Verifier Linkable Ring Signatures with unconditional anonymity},
      howpublished = {Cryptology ePrint Archive, Paper 2022/1138},
      year = {2022},
      note = {\url{https://eprint.iacr.org/2022/1138}},
      url = {https://eprint.iacr.org/2022/1138}
}
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