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RE: HW Support and XML Encryption Requirements

From: Joseph M. Reagle Jr. <reagle@w3.org>
Date: Fri, 23 Feb 2001 18:05:42 -0500
Message-Id: <4.3.2.7.2.20010223180330.02baa328@rpcp.mit.edu>
To: Paul Lambert <Paul.Lambert@cosinecom.com>
Cc: XML Encryption WG <xml-encryption@w3.org>

>At 12:50 2/22/2001 -0800, Paul Lambert wrote:
>One approach might be to better define the complete algorithm as the 
>complete suite of processing.  For example:
>
>   <xenc:EncryptionMethod 
> xenc:Algorithm="urn:nist-gov:tripledes-ede-cbc-IV-pad">

However, while I agree, does this support the inter-EncryptedData chaining 
described in section 4.5 of [prop3]? (I don't see 4.5 as that compelling a 
use case regardless so perhaps someone could speak to that?)


[prop3] 
http://lists.w3.org/Archives/Public/xml-encryption/2000Dec/att-0024/01-XMLEncryption_v01.html#_Toc501424257
5.4 Chaining between EncryptedData Elements
In this example, we show how chaining between two EncryptedData cipher 
texts. The EncryptedData "ED1" can be decrypted using the explicit IV and 
referenced symmetric key. EncryptedData "ED2" can be decrypted by using the 
output from decrypting ED1 as the input IV to "ED2".




__
Joseph Reagle Jr.                 http://www.w3.org/People/Reagle/
W3C Policy Analyst                mailto:reagle@w3.org
IETF/W3C XML-Signature Co-Chair   http://www.w3.org/Signature
W3C XML Encryption Chair          http://www.w3.org/Encryption/2001/
Received on Friday, 23 February 2001 18:05:48 GMT

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