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RE: Algorithm Selections

From: Brian LaMacchia <bal@microsoft.com>
Date: Wed, 15 Nov 2000 13:28:39 -0800
Message-ID: <0C682B70CE37BC4EADED9D375809768A0D0468@red-msg-04.redmond.corp.microsoft.com>
To: "'Ed Simon'" <ed.simon@entrust.com>
Cc: "'xml-encryption@w3.org'" <xml-encryption@w3.org>
Hi Ed,
 
I don't believe that streaming media/content necessarily requires use of a
stream cipher; I think that really depends on the particular application and
whether it wants to be able to recover from partial data losses in the
stream.  I can imagine particular scenarios where the application could
accept data loss (say a frame of video) and want to resync the keystream
with the encrypted data.  But I don't think these are the common scenarios,
so I'm happy to only require support for a block cipher in CBC mode (or some
other appropriate mode(s) TBD by NIST [1]).
 
                    --bal
 
[1] http://csrc.nist.gov/encryption/aes/modes/
<http://csrc.nist.gov/encryption/aes/modes/> 

-----Original Message-----
From: Ed Simon [mailto:ed.simon@entrust.com]
Sent: Wednesday, November 15, 2000 12:40 PM
To: 'xml-encryption@w3.org'
Subject: RE: Algorithm Selections


If XML Encryption is to be used for streaming media, as discussed in my
presentation at the work shop, then we will also need streaming ciphers.
 
Ed

 
Received on Wednesday, 15 November 2000 16:29:30 GMT

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