Attacks on a Secure Group Communication Scheme With Hierarchical Access Control

Willi Geiselmann; Rainer Steinwandt

Paper 2003/227

Attacks on a Secure Group Communication Scheme With Hierarchical Access Control

Willi Geiselmann and Rainer Steinwandt

Abstract

At ICICS 2001, Zou, Ramamurthy, and Magliveras proposed CRTHACS, a chinese remainder theorem based scheme for secure group communication with hierarchical access control. The scheme is designed in such a way that the underlying hierarchy remains hidden from the participating parties/users. This contribution describes several practical attacks on CRTHACS which can reveal significant parts of the hierarchy.

Metadata

Available format(s): PDF PS
Category: Cryptographic protocols
Publication info: Published elsewhere. Unknown where it was published
Keywords: hierarchical access control cryptanalysis
Contact author(s): steinwan @ ira uka de
History: 2003-10-31: received
Short URL: https://ia.cr/2003/227
License: CC BY

BibTeX

@misc{cryptoeprint:2003/227,
      author = {Willi Geiselmann and Rainer Steinwandt},
      title = {Attacks on a Secure Group Communication Scheme With Hierarchical Access Control},
      howpublished = {Cryptology ePrint Archive, Paper 2003/227},
      year = {2003},
      note = {\url{https://eprint.iacr.org/2003/227}},
      url = {https://eprint.iacr.org/2003/227}
}