Paper 2012/407
Cross-Unlinkable Hierarchical Group Signatures
Julien Bringer, Herve Chabanne, and Alain Patey
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, Cross-Unlinkability enables a cascade revocation process that takes into account the underlying tree structure, while ensuring anonymity for non-revoked 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.
Metadata
- Available format(s)
PDF- Category
- Public-key cryptography
- Publication info
- Published elsewhere. EuroPKI 2012
- Keywords
- AnonymityUnlinkabilityGroup Signatures
- Contact author(s)
- alain patey @telecom-paristech fr
- History
- 2012-07-25: revised
- 2012-07-24: received
- See all versions
- Short URL
- https://ia.cr/2012/407
- License
CC BY
BibTeX
@misc{cryptoeprint:2012/407, author = {Julien Bringer and Herve Chabanne and Alain Patey}, title = {Cross-Unlinkable Hierarchical Group Signatures}, howpublished = {Cryptology {ePrint} Archive, Paper 2012/407}, year = {2012}, url = {https://eprint.iacr.org/2012/407}}