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Re: [Ietf-krb-wg] Review of draft-sorce-krbwg-general-pac-02

Nico Williams <nico@cryptonector.com> Tue, 05 July 2011 21:07 UTC

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Date: Tue, 05 Jul 2011 16:07:52 -0500
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From: Nico Williams <nico@cryptonector.com>
To: "Cantor, Scott E." <cantor.2@osu.edu>
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Subject: Re: [Ietf-krb-wg] Review of draft-sorce-krbwg-general-pac-02
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On Tue, Jul 5, 2011 at 3:45 PM, Cantor, Scott E. <cantor.2@osu.edu> wrote:
> On 7/5/11 4:38 PM, "Nico Williams" <nico@cryptonector.com> wrote:
>>Well, there's XER (XML encoding rules for ASN.1) and FastInfoSet,
>>which is an application of PER (ASN.1 Packed Encoding Rules) to an
>>ASN.1 module derived from an XML schema.  Thus it's possible to
>>convert between ASN.1 and XML.
>
> Since you were responding to my comment, let me note that what I was
> advocating was NOT an encoding of XML into ASN.1, but an encoding of an
> existing assertion format into ASN.1, so that the semantics would be
> consistent.

What's the difference?  A mapping of XML onto any ASN.1 encoding rules
would give you the same data encoded differently, with no semantics
difference at all (since the data is the same once decoded).

Nico
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