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Subject: Liaison to ANSI X9 on XML Timestamping
I propose the following liaison to ANSI X9 (Financial services) on XML time-stamping. LIAISON FROM: OASIS DIGITAL SIGNATURE SERVICES TECHNICAL COMMITTEE TECHNICAL COMMITTEE TO: ANSI X9F4 SUBJECT: XML BASED SERVICES FOR TIME-STAMPING DATE: 5TH SEPT 2004 (DRAFT FOR DSS MEMBERS) The OASIS Digital Signature Services Technical Committee (DSS TC) note with interest the ANSI working draft X9.95 for Trusted Time Stamp Part 1: Management & Security. This document provides a comprehensive specification for the time-stamping services using either ASN.1 or XML technologies, which usefully includes specifications for the secure management of their operations. The OASIS DSS TC has produced a generic core protocol for access to digital signature services based around Web (XML) techniques as well as a specific profile for use of this protocol for access to time-stamping services. The time-stamping profile includes support for RFC 3161 ASN.1 based time-stamps as well as an XML equivalent to this time-stamp token. As well as defining protocols for creations of time-stamps, DSS also supports verification. Copies of the Core DSS protocol and time-stamping profile is available through the OASIS DSS TC web site at: http://www.oasis-open.org/committees/tc_home.php?wg_abbrev=dss The OASIS DSS TC would be pleased to work with ANSI X9F4 in ensuring alignment in the area of commonality between X9.95 and the DSS core protocol time-stamping profile. We believe that by bringing together the work of the two groups unnecessary fragmentation in the marketplace is avoided, saving costs of suppliers and consumers. In particular, ANSI X9F4 may wish to consider use of the DSS protocol as the basis of: - Time Stamp Request / Response XML given in 7.2.3 and 7.3.3 of the draft X9.95 - TST token XML in 8.1.3.2, and - For verification of the Time-stamp token. The OASIS DSS TC would welcome any comments that X9F5 have on the DSS specifications that may further assist in alignment. Nick Pope (pope@secstan.com) Juan Carlos Cruellas (Cruellas@ac.upc.es Co-chairs OASIS DSS TC
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