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| Subject | Re: Entropy Estimations for die and pass phrases |
| References | <op.x6oirrzqwei6gd@phenom-pc> |
| From | "David Eather" <eather@tpg.com.au> |
| Message-ID | <op.x6ovi5xkwei6gd@phenom-pc> (permalink) |
| Date | 2015-10-18 16:41 +1000 |
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
^^^^ that is 3.00 bits per throw
> 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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