@inproceedings{3ccd9445025a4480af02c270e2924572,
title = "Renewing cryptographic timestamps",
author = "Al-Riyami, \{Sattam S\} and Mitchell, \{Chris J\}",
year = "2002",
language = "English",
series = "IFIP Conference Proceedings",
publisher = "Kluwer Academic Publishers",
pages = "9--16",
editor = "B Jerman-Blazic and T Klobucar",
booktitle = "Proceedings of the IFIP TC6/TC11 Sixth Joint Working Conference on Communications and Multimedia Security, CMS 2002, Portoroz, Slovenia, September 2002",
}