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-----Original Message-----
From: owner-m...@openbsd.org [mailto:owner-m...@openbsd.org] On Behalf Of 
hru...@gmail.com
Sent: Tuesday, September 17, 2013 10:28 AM
To: misc@openbsd.org
Subject: Re: cvsync, rsync

Marc Espie <es...@nerim.net> wrote:

> > You have strings A and B, and you know only that hash(A)=hash(B): what
> > is the probability that A=B? 2^-160?  
>
> No, that's never the problem.
>
> You have a *given*  string A, and another string B.

O.K. You have string A in the client with hash(A)=n. You find string
B in the server also with hash(B)=n. What is the probability that
A=B?

Rodrigo.

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