From: andrey mirtchovski <mirtchovski@gmail.com>
To: Fans of the OS Plan 9 from Bell Labs <9fans@cse.psu.edu>
Subject: Re: [9fans] Venti and the hash / public key in plan9
Date: Mon, 6 Feb 2006 10:51:09 -0700 [thread overview]
Message-ID: <14ec7b180602060951i4293b02arc103379fd7415c82@mail.gmail.com> (raw)
In-Reply-To: <fd2f16438f73de7dd73dad50d78f6887@cat-v.org>
---copy/paste---
> Still, the knowledge that collisions have a probability
> of occuring is slightly unsettling. What are the statistics
> regarding probability of collisions in the venti, anyways?
Extremely low. It's much more likely the disk will spontaneously
levitate first.
- Dan C.
---copy/paste---
> A 160-bit hash (assuming "strong" hashing) has a 50% probabilty of
> collisions after 2^80 entries. Google "birthday paradox" for the math.
While you make the 2^80 entries, we'll keep ourselves busy worrying
about something else.
Sape
---end---
next prev parent reply other threads:[~2006-02-06 17:51 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-02-06 16:36 Lluís Batlle
2006-02-06 16:58 ` Russ Cox
2006-02-06 17:16 ` Lluís Batlle
2006-02-06 17:21 ` "Nils O. Selåsdal"
2006-02-06 17:33 ` uriel
2006-02-06 17:37 ` Ronald G Minnich
2006-02-06 17:55 ` Lluís Batlle
2006-02-06 19:45 ` Russ Cox
2006-02-06 17:51 ` andrey mirtchovski [this message]
2006-02-06 19:49 ` Joel Salomon
2006-02-06 17:25 ` Ronald G Minnich
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