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Subject: Re: [xacml] AA02: Revised: A.x Structured Datatypes
From: Polar Humenn <>
To: Anne Anderson <>
Date: Thu, 17 Oct 2002 14:55:14 -0400 (EDT)
Opps. this doesn't type check I forgot one thing:
On Thu, 17 Oct 2002, Polar Humenn wrote:
> <Apply FunctionId="ext:get-public-key">
> <SubectAttributeDesignatorWhere AttributeId="urn:....:key-info">
> <SubjectMatch MatchId="function:string-equals">
> <SubjectAttributeDesignator
> AttributeId="urn:...subject-category"
> DataType="xs:QName"
> />
> <AttributeValue DataType="xsQName">urn:....:access-subject</AttributeValue>
> </SubjectMatch>
> </SubjectAttributeDesignatorWhere>
> </Apply>
>
> where ext:get-public-key
> takes a ds:keyInfo and returns an xs:base64Binary, which is the public key
> from the <whatever> element of a ds:KeyInfo type.
should be:
> <Apply FunctionId="ext:get-public-key">
<Apply FunctionId="ext:keyInfo-one-and-only">
> <SubectAttributeDesignatorWhere AttributeId="urn:....:key-info">
> <SubjectMatch MatchId="function:string-equals">
> <SubjectAttributeDesignator
> AttributeId="urn:...subject-category"
> DataType="xs:QName"
> />
> <AttributeValue DataType="xsQName">urn:....:access-subject</AttributeValue>
> </SubjectMatch>
> </SubjectAttributeDesignatorWhere>
</Apply>
> </Apply>
>
where ext:keyInfo-one-and-only takes a bag of ds:KeyInfo and returns a
ds:KeyInfo if and only if there is only one element in the bag,
indeterminate otherwise.
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