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 controlcryptanalysis
Contact author(s)
steinwan @ ira uka de
History
2003-10-31: received
Short URL
https://ia.cr/2003/227
License
Creative Commons Attribution
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}
}
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