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Re: [ippm] Question on encrypting the start-time field

"Murtaza Chiba (mchiba)" <mchiba@cisco.com> Thu, 03 April 2008 19:37 UTC

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From: "Murtaza Chiba (mchiba)" <mchiba@cisco.com>
To: "Jeff W. Boote" <boote@internet2.edu>
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Cc: IETF IPPM WG <ippm@ietf.org>
Subject: Re: [ippm] Question on encrypting the start-time field
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> -----Original Message-----
> From: Jeff W. Boote [mailto:boote@internet2.edu] 
> Sent: Thursday, April 03, 2008 11:57 AM
> To: Murtaza Chiba (mchiba)
> Cc: IETF IPPM WG
> Subject: Re: Question on encrypting the start-time field
> 
> 
> On Apr 3, 2008, at 12:31 PM, Murtaza Chiba (mchiba) wrote:
> > Well, the real problem I see with this is that the there can be no 
> > concurrent processing of messages within a connection if 
> the CBC mode 
> > spans messages.  Of course the RFC precludes this, but it 
> would really 
> > be nice if the CBC mode were limited to exchanges for a 
> given SID so 
> > that parallel processing could be done across SIDs instead 
> of forcing 
> > a new connection.  :(
> 
> TCP is a stream protocol. OWAMP-Control is over TCP. You 
> can't parallelize the reading/writing of a stream socket. 

Yes, but what the stream looks like can be decided by the application.
It would be nice to have the capability to do the
Request-Session->Start-Session->Stop-Session for multiple SIDs in
parallel.   Instead of the current method
Request-Session(+)->StartAll-Sessions->StopAll-Sessions.

-Murtaza


> Given this, I don't see any benefit to confusing the 
> encryption by making it stateful relative to SID. It is 
> stateful with respect to the stream.
> 
> jeff
> --
> Jeff W. Boote
> boote@internet2.edu
> 
> 
> 
> 
> 
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