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Re: Entropy Estimations for die and pass phrases

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On Sun, 18 Oct 2015 15:14:43 +1000, Robert Wessel  
<robertwessel2@yahoo.com> wrote:

> On Sun, 18 Oct 2015 12:05:41 +1000, "David Eather" <eather@tpg.com.au>
> wrote:
>
>> Just a short table of entropy estimates (Shannon entropy for the purest
>> hair splitters)
>>
>> 6 sided dice 2.58 bits per throw
>> 8 sided dice 3.99 bits per throw
>
>
> Eh?  3.00 bits per throw?

yep typo


>
>
>> 10 dided dice 3.32 bits per throw
>> Letters from a Scrabble set 4.32 bits per tile (this is higher because  
>> the
>> distribution of letters is a little more even than in natural language
>> because some letter must have one tile even though they represent less
>> than 1% of language)
>>
>> Making a password from the first letter of every word in a pass-phrase
>> yield about 3.9 - 4.0 bits per letter.
>>
>> However, Professor Unruh has mentioned his experiments with all lower  
>> case
>> words taken from his texts which yielded 4.1 bits per word. This accords
>> very well with the Scrabble result and leads me to conclude that  
>> although
>> the difference is relatively small there is no reason to use mixed cases
>> when and only when) making a pass phrase from the first letter of words  
>> in
>> a sentence.

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Entropy Estimations for die and pass phrases  "David Eather" <eather@tpg.com.au> - 2015-10-18 12:05 +1000
  Re: Entropy Estimations for die and pass phrases Robert Wessel <robertwessel2@yahoo.com> - 2015-10-18 00:14 -0500
    Re: Entropy Estimations for die and pass phrases "David Eather" <eather@tpg.com.au> - 2015-10-18 16:40 +1000
  Re: Entropy Estimations for die and pass phrases  "David Eather" <eather@tpg.com.au> - 2015-10-18 16:41 +1000
  Re: Entropy Estimations for die and pass phrases Karl-Uwe Frank <karl.frank@freecx.co.uk> - 2015-10-18 23:22 +0200
    Re: Entropy Estimations for die and pass phrases Paulo Marques <pmarques@grupopie.com> - 2015-10-19 15:24 +0100
  Re: Entropy Estimations for die and pass phrases Jeffrey Goldberg <nobody@goldmark.org> - 2015-10-19 00:17 -0500
    Re: Entropy Estimations for die and pass phrases rpw3@rpw3.org (Rob Warnock) - 2015-10-19 12:00 +0000
      Re: Entropy Estimations for die and pass phrases Jeffrey Goldberg <nobody@goldmark.org> - 2015-10-19 14:52 -0500
        Re: Entropy Estimations for die and pass phrases David Malone <dwmalone@walton.maths.tcd.ie> - 2015-10-20 08:00 +0000
          Re: Entropy Estimations for die and pass phrases Jeffrey Goldberg <nobody@goldmark.org> - 2015-10-20 12:32 -0500

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