Publication Type
Conference Proceeding Article
Version
publishedVersion
Publication Date
6-2007
Abstract
Time Capsule Signature, first formalized by Dodis and Yum in Financial Cryptography 2005, is a digital signature scheme which allows a signature to bear a (future) time t so that the signature will only be valid at time t or later, when a trusted third party called time server releases time-dependent information for checking the validity of a time capsule signature. Also, the actual signer of a time capsule signature has the privilege to make the signature valid before time t.In this paper, we provide a new security model of time capsule signature such that time server is not required to be fully trusted. Moreover, we provide two efficient constructions in random oracle model and standard model. Our improved security model and proven secure constructions have the potential to build some new E-Commerce applications.
Keywords
Time Capsule Signature
Discipline
Information Security
Research Areas
Information Systems and Management
Publication
Public Key Infrastructure: 4th European PKI Workshop: Theory and Practice, Palma de Mallorca, Spain, June 28-30: Proceedings
Volume
4582
First Page
127
Last Page
142
ISBN
9783540734079
Identifier
10.1007/978-3-540-73408-6_9
Publisher
Springer
City or Country
Cham
Citation
HU, Bessie C.; WONG, Duncan S.; HUANG, Qiong; YANG, Guomin; and DENG, Xiaotie.
Time capsule signature: Efficient and provably secure constructions. (2007). Public Key Infrastructure: 4th European PKI Workshop: Theory and Practice, Palma de Mallorca, Spain, June 28-30: Proceedings. 4582, 127-142.
Available at: https://ink.library.smu.edu.sg/sis_research/7420
Creative Commons License
This work is licensed under a Creative Commons Attribution-NonCommercial-No Derivative Works 4.0 International License.
Additional URL
https://doi.org/10.1007/978-3-540-73408-6_9