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Re: [kitten] CB data characteristics Re: Fw: New Version Notification for draft-mills-kitten-sasl-oauth-02

"William J. Mills" <wmills@yahoo-inc.com> Sat, 09 April 2011 07:26 UTC

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Date: Sat, 09 Apr 2011 00:27:51 -0700
From: "William J. Mills" <wmills@yahoo-inc.com>
To: Nico Williams <nico@cryptonector.com>
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Cc: "kitten@ietf.org" <kitten@ietf.org>
Subject: Re: [kitten] CB data characteristics Re: Fw: New Version Notification for draft-mills-kitten-sasl-oauth-02
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So, I think the way to go in this mechanism is to send the channel binding type identifier and a SHA-1 hash of the channel binding data.  If the CB data is short I suppose we could optimise it, but I like simple for this. 


I'll add that change to the draft.



________________________________
From: Nico Williams <nico@cryptonector.com>
To: William J. Mills <wmills@yahoo-inc.com>
Cc: "kitten@ietf.org" <kitten@ietf.org>
Sent: Friday, April 8, 2011 11:54 PM
Subject: Re: [kitten] CB data characteristics Re: Fw: New Version Notification for draft-mills-kitten-sasl-oauth-02


On Apr 8, 2011 10:06 PM, "William J. Mills" <wmills@yahoo-inc.com> wrote:
>
> Ah, so it would be valid for me to specify a cryptographic hash of the channel binding data and send the hash?
Yes, very much so.  Keyed hashes (MACs) are better, if you can swing that, but a hash will do.

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