### 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)
Category
Public-key cryptography
Publication info
Published elsewhere. Unknown where it was published
Keywords
digital signaturetime capsulering signatureprovable 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},
note = {\url{https://eprint.iacr.org/2006/113}},
url = {https://eprint.iacr.org/2006/113}
}

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