[OAUTH-WG] OAuth token entropy

Oleg Gryb <oleg_gryb@yahoo.com> Fri, 02 November 2012 16:16 UTC

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Date: Fri, 02 Nov 2012 09:16:46 -0700
From: Oleg Gryb <oleg_gryb@yahoo.com>
To: torsten@lodderstedt.net
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Cc: oauth@ietf.org
Subject: [OAUTH-WG] OAuth token entropy
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Can somebody please provide clarification for this:
http://tools.ietf.org/html/draft-ietf-oauth-v2-threatmodel-05#section-5.1.4.2.25.1.4.2.2.  High entropy of secrets...
   The probability of any two Authorization Code
   values being identical should be less than or equal to 2^(-128) and
   should be less than or equal to 2^(-160).

Is there any reason why we have two inclusive conditions in this statement or is it a typo and you meant something else?