Anonymity in Shared Symmetric Key Primitives

Gregory M.  Zaverucha; Douglas R.  Stinson

Paper 2009/057

Anonymity in Shared Symmetric Key Primitives

Gregory M. Zaverucha and Douglas R. Stinson

Abstract

We provide a stronger definition of anonymity in the context of shared symmetric key primitives, and show that existing schemes do not provide this level of anonymity. A new scheme is presented to share symmetric key operations amongst a set of participants according to a $(t,n)$-threshold access structure. We quantify the amount of information the output of the shared operation provides about the group of participants which collaborated to produce it.

Metadata

Available format(s): PDF
Category: Secret-key cryptography
Publication info: Published elsewhere. Unknown where it was published
Keywords: threshold cryptography
Contact author(s): gzaveruc @ cs uwaterloo ca
History: 2009-02-06: received
Short URL: https://ia.cr/2009/057
License: CC BY

BibTeX

@misc{cryptoeprint:2009/057,
      author = {Gregory M.  Zaverucha and Douglas R.  Stinson},
      title = {Anonymity in Shared Symmetric Key Primitives},
      howpublished = {Cryptology {ePrint} Archive, Paper 2009/057},
      year = {2009},
      url = {https://eprint.iacr.org/2009/057}
}