phc-discussions - Re: [PHC] multiply-hardening (Re: NoelKDF ready for submission)

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Date: Thu, 13 Feb 2014 10:07:32 -0500
From: Bill Cox <waywardgeek@...il.com>
To: discussions@...sword-hashing.net
Subject: Re: [PHC] multiply-hardening (Re: NoelKDF ready for submission)

On Thu, Feb 13, 2014 at 9:44 AM, Bill Cox <waywardgeek@...il.com> wrote:
>> I'll go ahead and do 1,000,000 runs with this and test the last
> 64-bits for collisions (no 64-bit collisions should occur, and there
> should be around 100-130 collisions in the lower 32-bits and in the
> upper 32-bits).  I think this has will pass this test.  I'll post the
> results when I have them.  It looks like my NoelKDF hash function may
> not survive the day...
>
> Bill

The 1,000,000 value test passed.  There were no 64-bit collisions in
the last 64-bits of memory from 1,000,000 runs where I generated 1MB
of data with a block size of 64.  There were 121 collisions in the low
32-bits, and 117 in the upper, right in the middle of the probable
range.

Bill