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Paper: Solutions to Key Exposure Problem in Ring Signature

Authors:
Joseph K. Liu
Duncan S. Wong
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URL: http://eprint.iacr.org/2005/427
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Abstract: In this paper, we suggest solutions to the key exposure problem in ring signature. In particular, we propose the first forward secure ring signature scheme and the first key-insulated ring signature schemes. Both constructions allow a $(t,n)$-threshold setting. That is, even $t$ secret keys are compromised, the validity of all forward secure ring signatures generated in the past is still preserved. In the other way, the compromise of up to all secret keys does not allow any adversary to generate a valid key-insulated ring signature for the remaining time periods.
BibTeX
@misc{eprint-2005-12760,
  title={Solutions to Key Exposure Problem in Ring Signature},
  booktitle={IACR Eprint archive},
  keywords={public-key cryptography / Signatures},
  url={http://eprint.iacr.org/2005/427},
  note={ liu@cs.bris.ac.uk 13110 received 23 Nov 2005},
  author={Joseph K. Liu and Duncan S. Wong},
  year=2005
}