RE: Attribute encryption

I don't think of these as types of encryption but rather as
types of XML structures that can be encrypted; an XML element
and an XML node list.  One would encrypt a whole XML element when
one wants to secure the content and the semantics.  If one wants
to preserve the semantics but secure the content of an element,
then the result is an encrypted node list.

XML provides a uniform way of structuring data;  XML Encryption 
provides a uniform way of encrypting XML's primary structures.  

Ed

-----Original Message-----
From: Sanjeev Hirve [mailto:shirve@cyberelan.com]
Sent: Monday, January 15, 2001 4:22 PM
To: Blair Dillaway; xml-encryption@w3.org
Subject: Re: Attribute encryption


Blair,
  I do understand the 'what'.  I am interested in the 'why'.  Why do we
feature 2 types of encryption ?

----- Original Message -----
From: Blair Dillaway <blaird@microsoft.com>
To: 'Sanjeev Hirve' <shirve@cyberelan.com>; <xml-encryption@w3.org>
Sent: Monday, January 15, 2001 12:30 PM
Subject: RE: Attribute encryption


> Additional explaination was provided in my earlier response to Joeseph
> Reagle's comment on the proposal.  But in essence:
>
> - Element encryption refers to encryption of an entire element
> including the element tag, attributes, and all child nodes.
> - the NodeList refers to the ordered collection of children of an
> element and is used to encrypt the contents of an element while leaving
the
> element tag and any attributes in the clear.
>
> > -----Original Message-----
> > From: Sanjeev Hirve [mailto:shirve@cyberelan.com]
> > Sent: Monday, January 15, 2001 8:59 AM
> > To: Blair Dillaway; xml-encryption@w3.org
> > Subject: Re: Attribute encryption
> >
> >
> > The proposed standard provides for 2 Types of encryption,
> > viz. Element and
> > Nodelist.  Can somebody explain the rationale and thinking
> > behind this ?
> >
> >
>
>