Paper 2013/290

Massive Group Message Authentication with Revocable Anonymity

Boaz Catane and Amir Herzberg

Abstract

We present and implement schemes for authenticating messages from a group of users to a recipient, with revocable anonymity and massive (very high) message rate. Our implementations present a trade-off between the efficiency and the security required: from online group managers that participate in every message sent to offline managers, from assuming a trusted group manager and a trusted recipient to securing against both entities. All implementations have the {\em traceablity} feature, allowing to distributively and efficiently trace all messages that originated from a specific group member without violating anonymity of other members. In addition, our schemes are efficient and practical.

Metadata
Available format(s)
PDF
Category
Implementation
Publication info
Published elsewhere. Unknown where it was published
Keywords
Digital signaturesGroup signaturesRevocationEfficient implementations
Contact author(s)
boaz catane @ mail huji ac il
History
2013-05-26: last of 2 revisions
2013-05-23: received
See all versions
Short URL
https://ia.cr/2013/290
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2013/290,
      author = {Boaz Catane and Amir Herzberg},
      title = {Massive Group Message Authentication with Revocable Anonymity},
      howpublished = {Cryptology {ePrint} Archive, Paper 2013/290},
      year = {2013},
      url = {https://eprint.iacr.org/2013/290}
}
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