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Subject: [tc-announce] OASIS TC Call For Participation: Digital SignatureServices

A new OASIS technical committee is being formed. The OASIS Digital
Signature Services Technical Committee (DSS TC) has been proposed by the
following members of OASIS: Robert Zuccherato, Entrust Inc.; Brian
Phelps, Datum; Bill Burr, NIST; Jeremy Epstein, webMethods; and Don
Adams, TIBCO.

The proposal for a new TC meets the requirements of the OASIS TC
Process (see http://oasis-open.org/committees/process.shtml), and is
appended to this message. The proposal, which includes a statement of
purpose, list of deliverables, and proposed schedule, will constitute
the TC's charter. The TC Process allows these items to be clarified
(revised) by the TC members; such clarifications (revisions), as well
as submissions of technology for consideration by the TC and the
beginning of technical discussions, may occur no sooner than the TC's
first meeting.

To become a member of this new TC you must 1) be an employee of an
OASIS member organization or an Individual member of OASIS; 2) notify
the TC chair, Robert Zuccherato (robert.zuccherato@entrust.com) of your
intent to participate at least 15 days prior to the first meeting; and
3) attend the first meeting on 2 December. You should also subscribe to
the TC's mail list. Note that membership in OASIS TCs is by individual,
and not by organization. You must be eligible for participation at the
time you time you notify the chair.

The private mail list dss@lists.oasis-open.org is for committee
discussions. TC members as well as any other interested OASIS members
should subscribe to the list by going to the mail list web page at
http://lists.oasis-open.org/ob/adm.pl, or by sending a message to
dss-request@lists.oasis-open.org with the word "subscribe" as the body
of the message. (Note that subscribing to the mail list does not make
you a member of the TC; to become a member you must contact the TC chair
and attend the first meeting as described in the preceeding paragraph.)

A public comment list dss-comment@lists.oasis-open.org will be available
for the public to make comments on the work of this TC; the public may
subscribe to this list by going to the mail list web page at
http://lists.oasis-open.org/ob/adm.pl, or by sending a message to
dss-comment-request@lists.oasis-open.org with the word "subscribe" as
the body of the message.

The archives of both of these mail lists are visible to the public at

Karl F. Best
OASIS - Director, Technical Operations
+1 978.667.5115 x206
karl.best@oasis-open.org  http://www.oasis-open.org

Name of the TC:

OASIS Digital Signature Services Technical Committee (DSS)

Statement of Purpose:

The Digital Signature Services Technical Committee has as its mandate
the development of techniques to support the processing of digital
signatures.  This mandate includes defining an interface for
requesting that a web service produce and/or verify a digital
signature on a given piece of data and techniques for proving that a
signature was created within its private key validity period.

The TC will develop a protocol for a digital signature creation web
service. Providing digital signatures via such a web service
facilitates policy-based control of the provision of the signatures.

The TC will also develop a protocol for a centralized digital
signature verification web service that can verify signatures in
relation to a given policy set.

Finally, the TC will develop an XML-based protocol to produce
cryptographic time stamps that can be used for determing whether or
not a signature was created within the associated public key's
validity period or before revocation. This is required as part of the
signature verification algorithm.

More generally there is a need for XML-based techniques for proving
that data existed at a particular point in time.  While this more
general problem is not, strictly speaking, within the scope of the TC,
the ability of the proposed solutions to solve this problem will be
considered, as much as possible, while remaining consistent with the
scope of the TC.

Relationship to Existing Activities:

Many efforts related to digital signatures and related technologies
are underway throughout the industry.  The following work may be
relevant to this Digital Signature Services TC:

- OASIS Access Control TC (XACML)
- OASIS Rights Language TC (XrML)
- OASIS Security Services TC (SAML)
- OASIS Web Services Security TC (WSSTC)
- W3C XML Signature
- W3C XML Key Management

Technical Committee Deliverables

The new TC will have the following deliverables:
1) an XML-based protocol providing a method or methods of proving that
a private key was used during its validity period,
2) a SOAP binding for the protocol elements in 1),
3) a WS-Security profile for the elements in 1),
4) an interface for a centralized digital signature creation web
5) an interface for a centralized digital signature verification web

Language in Which the TC will Conduct Business


Date and Time of the First Meeting

The first meeting will be held by tele-conference on Monday, December
2, 2002. The meeting will start at 1:00 pm Eastern time.

Meeting Schedule for the First Year

The Digital Signature Services TC will meet via bi-weekly conference
call, on a schedule determined by the TC members. The phone call
sponsors will be determined at the initial meeting.  Face-to-face
meetings will be held as required.

Names, Affiliation, and Electronic Mail Addresses of members who
support the formation of this TC and are committed to the Meeting
Schedule and Purpose

Robert Zuccherato, Entrust Inc., robert.zuccherato@entrust.com
Brian Phelps, Datum, bphelps@datum.com
Bill Burr, NIST, william.burr@nist.gov
Jeremy Epstein, webMethods, jepstein@webmethods.com
Don Adams, TIBCO, dadams@tibco.com


The Digital Signature Services TC Chair will be Robert Zuccherato,
Entrust Inc.

Meeting Sponsors

Robert Zuccherato, Entrust Inc., will sponsor the first meeting.
Sponsorship of subsequent TC meetings, whether in person or conference
calls, will be determined by the TC membership.

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