A New Construction of Time Capsule Signature

Miaomiao Zhang; Gongliang Chen; Jianhua Li; Licheng Wang; Haifeng Qian

Paper 2006/113

A New Construction of Time Capsule Signature

Miaomiao Zhang, Gongliang Chen, Jianhua Li, Licheng Wang, and Haifeng Qian

Abstract

In this paper we introduce a new approach of constructing time capsule signature. Our new construction captures the basic requirements defined by dodis \emph{et al.}, and it is also very straightforward and flexible. The time capsule signature provides an elegant way to produce a ``future signature" that becomes valid from a specific future time $t$, when a trusted third party (called \textit{Time Server}) publishes some trapdoor information associated with the time $t$. It also has many other advantages. Our work includes a developed security model of time capsule signature, a novel way of construction based on the bipartite ring signature, which is proven secure in the random oracle model and a concrete realization of the scheme.

Metadata

Available format(s): PDF
Category: Public-key cryptography
Publication info: Published elsewhere. Unknown where it was published
Keywords: digital signature time capsule ring signature provable security
Contact author(s): mmzhang_sjtu @ sjtu edu cn
History: 2006-04-01: revised; 2006-03-26: received; See all versions
Short URL: https://ia.cr/2006/113
License: CC BY

BibTeX

@misc{cryptoeprint:2006/113,
      author = {Miaomiao Zhang and Gongliang Chen and Jianhua Li and Licheng Wang and Haifeng Qian},
      title = {A New Construction of Time Capsule Signature},
      howpublished = {Cryptology {ePrint} Archive, Paper 2006/113},
      year = {2006},
      url = {https://eprint.iacr.org/2006/113}
}