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Re: W3C Encryption Support for DES, RC2, and RC4 Symmetric Encry ptio n Algorithms

From: Christian Geuer-Pollmann <geuer-pollmann@nue.et-inf.uni-siegen.de>
Date: Fri, 21 Jun 2002 06:43:14 +0200
To: Tom Gindin <tgindin@us.ibm.com>, Joseph Ashwood <ashwood@msn.com>
cc: xml-encryption@w3.org
Message-ID: <656544.1024641793@crypto>

--On Donnerstag, 20. Juni 2002 07:53 -0400 Tom Gindin <tgindin@us.ibm.com> 
wrote:

> The legacy that matters in this case consists of legacy crypto libraries 
since
> obviously there's no legacy of XML-encrypted documents.  DES is also
> faster than 3DES, of course, but that's not a very strong reason.

No, that's not the only reason. Of course, nobody will start to encrypt XML 
today using DES. But -- XML Encryption is also specified as a Key 
Management container: If you have many files somewhere, all encrypted under 
DES, and you don't want/can to decrypt/reencrypt all that stuff to upgrade 
to a stronger algorithm but you want a key management that's nice, you 
could use XML Encryptions DataReference to create XML Documents which 
contain the data encryption key as well as the URI of the data file.

Regards,
Christian
Received on Friday, 21 June 2002 00:42:34 UTC

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