I-D ACTION:draft-ietf-pkix-time-stamp-00.txt

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This draft is a work item of the Public-Key Infrastructure (X.509) Working Group 
of the IETF.

	Title		: Internet X.509 Public Key Infrastructure 
                          Time Stamp Protocols
	Author(s)	: C. Adams, P. Cain, B. Pinkas, R. Zuccherato
	Filename	: draft-ietf-pkix-time-stamp-00.txt
	Pages		: 15
	Date		: 23-Sep-98
	
This document describes the format of the data returned by a Time
Stamp Authority and the protocols to be used when communicating with it.
The time stamping service can be used as a Trusted Third Party (TTP) as
one component in building reliable non-repudiation services (see
[ISONR]).  In order to reduce the amount of trust required of a TSA we
introduce (in Appendix C) the optional Temporal Data Authority (TDA)
whose function is to provide further corroborating evidence of the time
contained in the token.  We also give an example of how to place a
signature at a particular point in time, from which the appropriate
certificate status information (e.g. CRLs) may be checked.

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