Paper 2014/824

Accountable Tracing Signatures

Markulf Kohlweiss and Ian Miers

Abstract

Demands for lawful access to encrypted data are a long standing obstacle to integrating cryptographic protections into communication systems. A common approach is to allow a trusted third party (TTP) to gain access to private data. However, there is no way to verify that this trust is well place as the TTP may open all messages indiscriminately. Moreover, existing approaches do not scale well when, in addition to the content of the conversation, one wishes to hide ones identity. Given the importance of metadata this is a major problem. We propose a new signature scheme as an accountable replacement for group signatures, accountable forward and backward tracing signatures.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Preprint. MINOR revision.
Keywords
group signature
Contact author(s)
imiers @ cs jhu edu
History
2014-10-12: received
Short URL
https://ia.cr/2014/824
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2014/824,
      author = {Markulf Kohlweiss and Ian Miers},
      title = {Accountable Tracing Signatures},
      howpublished = {Cryptology ePrint Archive, Paper 2014/824},
      year = {2014},
      note = {\url{https://eprint.iacr.org/2014/824}},
      url = {https://eprint.iacr.org/2014/824}
}
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