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From: Rich <rich@example.invalid>
Newsgroups: sci.crypt
Subject: Re: Generate random passwords with your mouse ... :-)
Date: Fri, 7 Mar 2025 18:17:53 -0000 (UTC)
Organization: A noiseless patient Spider
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Stefan Claas <fgrsna.pynnf@vagrearg.eh> wrote:
> Richard Heathfield wrote:
>> On 06/03/2025 08:51, Stefan Claas wrote:
>> > Rich wrote:
>> > > Stefan Claas <fgrsna.pynnf@vagrearg.eh> wrote:
>> > > > Hi all,
>> > > > 
>> > > > just for fun, or maybe for real usage. ;-)
>> > > > 
>> > > > A small Windows .exe
>> > > > 
>> > > > https://github.com/706f6c6c7578/mouse_entropy
>> > > 
>> > > Not likely as "random" as one would think.  Better than nothing as
>> > > well.
>> > 
>> > Well, why not as random? I think you can't generate the same mouse
>> > movement twice, right?
>> 
>> Depends on the mouse, I'm afraid.
>> 
>> > And how could we call that?
>> 
>> A good start, but you'll want to mix in some bits from somewhere else.
> 
> Thanks. Done. You may check out the additional Linux code.

If you are on Linux, you already have a much better randomness 
generator in /dev/urandom, which not only takes input from mouse, but 
many other I/O devices as well, to 'mix up' the randomness.

You are unlikely to gain higher quality randomness on Linux with just 
some code to watch the mouse.