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Computing with big numbers?
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Date: 2008-12-01 (13:47)
From: Dario Teixeira <darioteixeira@y...>
Subject: Re: [Caml-list] Computing with big numbers?

> In preparation for a talk I'm going to give, I wanted
> to estimate how good 128 bits MD5 hashes were: how many
> hashes must be taken before the probability for a collision
> become non negligible? (I'm assuming equi-probability of
> every hash.)

I reckon that by saying "how good 128 bits MD5 hashes were"
you are aware of the recent attacks that make MD5's effective
security less than 128-bit.  The Wikipedia has a good summary:

Dario Teixeira