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Re: XML types for new signature properties equivalent to ASN.1 constructs.

From: Joseph M. Reagle Jr. <reagle@w3.org>
Date: Wed, 17 May 2000 12:39:07 +0200
Message-Id: <>
To: Juan Carlos Cruellas <cruellas@ac.upc.es>
Cc: w3c-ietf-xmldsig@w3.org
I'll just quickly point out that I think the place for substantive technical
discussion of this would be the list Peter recently started [1]. However, I
think it's good for people on this list to be at least aware of these
proposals. In particular, in the legal/policy context regulators may be
considering limiting the legal standing of signatures specifically to
implementations that use contemporary X509 structures. (Consequently,
precluding legal standing to implementations using other structures and
syntax). In speaking with folks on this topic, we've talked about the likely
hood of this scenario, and hopefully it is unlikely and policy makers will
focus on information requirements and not syntax. But it is something to
keep an eye on and speaks to a political reason (at least) for the expedient
development of XML equivalent structures (but again, not in this WG's scope

[1] http://jcewww.iaik.at/mailarchive/xmlcert/msg00001.html

At 10:10 2000-05-17 +0200, Juan Carlos Cruellas wrote:
 >Dear all,
 >Following the indications of Joseph Reagle, I send this
 >message to the list to tell you that it is available in the
 >URL indicated below a document where new XML types
 >for signature properties are specified.
 >The work has been carried out as a task of an 
 >ISIS European project, ESTIO (Electronic Signature Test suite
 >for Interoperability). This project aims to specify and develop
 >a test tool to assess products that generate and validate 
 >digital signatures and qualified certificates that should 
 >accomodate to what is established in the European Directive.
 >Several relevant documents to this goal have been taken into
 >account and a set of conformance requirements for these 
 >products have been specified. These requirements include the
 >presence of certain data structures added to basic structure of 
 >the digital signature itself (in ASN.1 terminology these
 >structures are called "signature attributes" -quite different
 >usage of the word "attributes" in XML).
 >ESTIO partners are aware of the growing importance of XML, and
 >for this reason, the work has been done of trying to specify 
 >in XML syntax some types that could contain equivalent
 >information to that being accomodated in ASN.1 structures 
 >defined in documents like ETSI ES 201 733, RFC 2634 etc.
 >The document can be accessed at the following URL :
 >Should you have any comments on this document, please send me
 >them to my e-mail address.
 >Thank you very much for your interest in advance.
 >Juan Carlos Cruellas.

Joseph Reagle Jr.   
W3C Policy Analyst                mailto:reagle@w3.org
IETF/W3C XML-Signature Co-Chair   http://www.w3.org/People/Reagle/
Received on Wednesday, 17 May 2000 06:40:20 UTC

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