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Subject: Re: Making references
At 2009-11-30 18:13 +0100, JAVEST by Roberto Cisternino wrote: >G. Ken Holman ha scritto: >>And, anyway, ext:UBLExtension/cbc:ID is optional and as I >>understand the signature requirement the associated identifier is >>mandatory, so the cardinality is inappropriate. >Of course as UBLExtensions are free noone can impose a cardinality >on all the IDs, this is why we are going to provide a profile where >it is described how an enveloped signature can be expressed into UBLExtensions. I disagree. We are going to provide both a profile and a schema for use under the extension point. We cannot supply a schema that changes the cardinality of ext:UBLExtension/cbc:ID to be mandatory. We can supply a schema that specifies the cardinality of sig:Signature/cbc:ID to be mandatory. >We are not changing structures we are recommending a base profile to >ensure the use of UBL with enveloped signature will be interoperable >and driven by this guide. (of course we do not specify specific >XAdES settings this is up to the implementers and communities) Agreed ... but we can also publish a schema with which users can validate the use of sig:Signature in an instance with a signature. >>And, finally, if we go with a wrapper aggregate then the top-level >>of the extension is under UBL security committee control and not >>DSIG control (in case we decide we want to add more information >>other than a mandatory cbc:ID). >Okay so you suggest to provide a more specific container inside the >generic extension container... >I am not sure we need to add further information... the >cac:Signature has already many info that are already the domain of XAdES. I was only adding the referential component since we cannot use ds:Signature/@id as the referential component (because of the lexical space of cbc:ID). More details are in another response this morning. . . . . . . . . . Ken -- Vote for your XML training: http://www.CraneSoftwrights.com/o/i/ Crane Softwrights Ltd. http://www.CraneSoftwrights.com/o/ Training tools: Comprehensive interactive XSLT/XPath 1.0/2.0 video Video lesson: http://www.youtube.com/watch?v=PrNjJCh7Ppg&fmt=18 Video overview: http://www.youtube.com/watch?v=VTiodiij6gE&fmt=18 G. Ken Holman mailto:gkholman@CraneSoftwrights.com Male Cancer Awareness Nov'07 http://www.CraneSoftwrights.com/o/bc Legal business disclaimers: http://www.CraneSoftwrights.com/legal
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