Network Working Group D. Eastlake, III
Request for Comments: 3354 Motorola
Category: Informational August 2002
Internet Open Trading Protocol
Version 2 Requirements
Status of this Memo
This memo provides information for the Internet community. It does
not specify an Internet standard of any kind. Distribution of this
memo is unlimited.
Copyright Notice
Copyright (C) The Internet Society (2002). All Rights Reserved.
Abstract
This document gives requirements for the Internet Open Trading
Protocol (IOTP) Version 2 by describing design principles and scope
and dividing features into those which will, may, or will not be
included.
Version 2 of the IOTP will extend the interoperable framework for
Internet commerce capabilities of Version 1 while replacing the XML
messaging and digital signature part of IOTP v1 with standards based
mechanisms.
Table of Contents
1. IntrodUCtion ...................................................2
2. Design Principles and Scope ....................................2
3. Requirements ...................................................2
4. Security Considerations ........................................4
References ........................................................4
Authors Addresses .................................................5
Full Copyright Statement ..........................................6
1. Introduction
Version 2 of the Internet Open Trading Protocol (IOTP) will extend
the interoperable framework for Internet commerce capabilities of
Version 1 [RFC2801] as described in Section 3 below. In addition,
it will replace the ad hoc XML messaging and digital signature [RFC
2802] parts of IOTP v1 with standards based mechanisms [RFC3275].
This document gives requirements for the Internet Open Trading
Protocol (IOTP) Version 2 by describing design principles and scope
and dividing features into those which will, may, or will not be
included.
2. Design Principles and Scope
1. The specification must describe the syntax and processing
necessary for an extension of the interoperable framework for
Internet commerce described in IOTP V1.0 [RFC2801].
2. Keep changes to IOTP V1.0 to a minimum.
3. Maintain all existing functionality of IOTP V1.0.
4. Test all XML DTDs and/or Schemas and XML examples in the
specification to insure that they are well-formed.
5. Create usage/implementation guidance information, probably as a
separate document.
6. It should be designed to work well with other protocols such as
ECML [RFC3106].
7. IOTP Version 2 should be developed as part of the broader Web
design philosophy of decentralization, URIs, Web data, and
modularity /layering / extensibility. [Berners-Lee, WebData] In
this context, this standard should take advantage of existing
provider (and infrastructure) primitives.
3. Requirements
IOTP Version 2 will include the following:
1. Be a superset of IOTP Version 1.
2. Provide for the Dynamic Definition of Trading Sequences. I.E.,
transactions will not be limited, as with v1, to a single payment
and a single delivery with delivery occurring after payment.
Instead, it will be possible to propose an arbitrary sequence of
transaction steps.
3. Include specification of an Offer Request Block.
4. Support Improved Problem Resolution (extend to cover presentation
of signed receipt to customer support party, better defined
Customer Care role, etc.).
5. Add provisions to indicate and handle a payment protocol not
tunneled through IOTP.
6. Add support for server based wallets.
The following may be include in IOTP v2:
1. Support Repeated/ongoing payments. For example, a means to
specify that a customer approval covers not only the instant
purchase but also some limited number of future purchase with some
total or per purchase spending limit.
2. Enhanced Server to Server messages. For example, a means for a
Delivery Handler to inform a Payment Handler that goods have
actually shipped, which may be a pre-condition for making a charge
against a credit card.
3. Include the ability to add both fields and attributes to existing
trading blocks in addition to the present ability to add entirely
new trading blocks.
The following are out of scope for IOTP version 2:
1. Legal or regulatory issues surrounding the implementation of the
protocol or information systems using it.
2. Design of an XML Messaging Layer. Instead, whatever is or appears
most likely to become the standard XML messaging layer will be
used. This includes a standard enveloping, addressing, and error
reporting framework.
3. Design of XML Digital Signatures. Instead, the existing standard
[RFC3275] will be used.
4. Security Considerations
As provided above, IOTP v2 will provide optional authentication via
standards based XML Digital Signatures [RFC3275]; however, neither
IOTP v1 nor v2 provide a confidentiality mechanism. Both require the
use of secure channels such as those provided by TLS [RFC2246] or
IPSEC for confidentiality and depend on the security mechanisms of
any payment system used in conjunction with them to secure payments.
References
[Berners-Lee] "Axioms of Web Architecture: URIs",
<http://www.w3.org/DesignIssues/Axioms.Html>, "Web
Architecture from 50,000 feet",
<http://www.w3.org/DesignIssues/Architecture.html>.
[RFC2026] Bradner, S., "The Internet Standards Process --
Revision 3", BCP 9, RFC2026, October 1996.
[RFC2246] Dierks, T. and C. Allen, "The TLS Protocol: Version
1.0", RFC2246, January 1999.
[RFC2801] Burdett, D., "Internet Open Trading Protocol - IOTP
Version 1.0", RFC2801, April 2000.
[RFC2802] Davidson, K. and Y. Kawatsura, "Digital Signatures for
the v1.0 Internet Open Trading Protocol (IOTP)", RFC
2802, April 2000.
[RFC3106] Eastlake, D. and T. Goldstein, "ECML v1.1: Field Names
for E-Commerce", RFC3106, April 2001.
[RFC3275] Eastlake, D., Reagle, J. and D. Solo, "XML-Signature
Syntax and Processing", RFC3275, March 2002.
[WebData] "Web Architecture: Describing and Exchanging Data",
<http://www.w3.org/1999/04/WebData>.
[XML] "Extensible Markup Language (XML) 1.0 (Second
Edition)", <http://www.w3.org/TR/1998/REC-xml>, T.
Bray, J. Paoli, C. M. Sperberg-McQueen.
Author's Addresses
Donald E. Eastlake 3rd
Motorola
155 Beaver Street
Milford, MA 01757 USA
Phone: +1-508-851-8280 (w)
+1-508-634-2066 (h)
EMail: Donald.Eastlake@motorola.com
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