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Please use this identifier to cite or link to this item: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/46202

Title: Enhancing the Security Promise of a Digital Time-Stamp
Authors: Pei-yih Ting
Fang-dar Chu
Contributors: 國立臺灣海洋大學:資訊工程學系
NTOU:Department of Computer Science and Engineering
Keywords: Protection;Digital signatures;Computer security;Information security;National security;Electronic commerce;Public key cryptography;Secure storage;Application software;Computer science
Date: 2008-03
Issue Date: 2018-05-07T08:09:44Z
Publisher: Advanced Information Networking and Applications, 2008. AINA 2008. 22nd International Conference on
Abstract: Abstract:
In this paper we present a trusted time-stamping service which issues time-stamps with enhanced security by a practical forward-secure proxy signature mechanism. This signature scheme provides a way to verify the validity of the delegation from the trusted time source through the common PKI certification hierarchy. The forward-security of this signature scheme provides better protection against key-exposure attack when time-stamping server gets intruded. The design of this signature scheme is tied closely to the time-stamping service based on hierarchicaldistributed time sources. The signature scheme is implemented with standard RSA signature and verification algorithms. The computation of signing and verification in providing the forward-security feature is absorbed into the proxy scheme. Only delegation and key-updating require minor extra computation. In addition, one safety assumption made implicitly in Krawczyk's forward-secure signature scheme is identified and eliminated such that the security of our scheme outperforms its predecessor.
Relation: Advanced Information Networking and Applications, 2008. AINA 2008. 22nd International Conference on
URI: http://ntour.ntou.edu.tw:8080/ir/handle/987654321/46202
Appears in Collections:[資訊工程學系] 演講及研討會

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