Paper 2005/427 Original: eprint.iacr.org/2005/427 ↗
Solutions to Key Exposure Problem in Ring Signature
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.
Metadata
- Available format(s)
PDF- Category
- Public-key cryptography
- Publication info
- Preprint.
- History
- 2005-11-23: last updated
- 2005-11-23: published
- Short URL
- https://ia.cr/2005/427
- License
- https://creativecommons.org/licenses/by/4.0/
BibTeX
@misc{cryptoeprint:2005/427,
author = {Joseph K. Liu and Duncan S. Wong},
title = {Solutions to Key Exposure Problem in Ring Signature},
howpublished = {Cryptology {ePrint} Archive, Paper 2005/427},
year = {2005},
url = {https://eprint.iacr.org/2005/427}
}