Sphinx: A Compact and Provably Secure Mix Format

George Danezis; Ian Goldberg

Paper 2008/475

Sphinx: A Compact and Provably Secure Mix Format

George Danezis and Ian Goldberg

Abstract

Sphinx is a cryptographic message format used to relay anonymized messages within a mix network. It is more compact than any comparable scheme, and supports a full set of security features: indistinguishable replies, hiding the path length and relay position, as well as providing unlinkability for each leg of the message's journey over the network. We prove the full cryptographic security of Sphinx in the random oracle model, and we describe how it can be used as an efficient drop-in replacement in deployed remailer systems.

Metadata

Available format(s): PDF
Category: Cryptographic protocols
Publication info: Published elsewhere. Unknown where it was published
Keywords: anonymity
Contact author(s): iang+eprint @ cs uwaterloo ca
History: 2008-11-18: received
Short URL: https://ia.cr/2008/475
License: CC BY

BibTeX

@misc{cryptoeprint:2008/475,
      author = {George Danezis and Ian Goldberg},
      title = {Sphinx: A Compact and Provably Secure Mix Format},
      howpublished = {Cryptology ePrint Archive, Paper 2008/475},
      year = {2008},
      note = {\url{https://eprint.iacr.org/2008/475}},
      url = {https://eprint.iacr.org/2008/475}
}