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Date: Mon, 1 Apr 2019 08:43:43 +0300
Message-ID: <CAL0xaBF94NFumGaqGL0CY-QPN_5F9BER11usrRbV3zGWd4iPsQ@mail.gmail.com>
To: David Rodrigues <david.proweb@gmail.com>
Cc: PHP internals <internals@lists.php.net>
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Subject: Re: [PHP-DEV] random_seed()
From: arvids.godjuks@gmail.com (Arvids Godjuks)

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On Mon, Apr 1, 2019, 05:52 David Rodrigues <david.proweb@gmail.com> wrote:

> Just to know, can we have a random_seed() for random_int()/random_bytes()
> like we have mt_srand() to mt_rand()?
>
> I don't know if random_int() is more "random" than mt_rand(), but if it is,
> so maybe is valid a random_seed() function.
>
> --
> David Rodrigues
>

Hello,

random_bytes/random_int use proper random generation source - /dev/urandom
in most cases (and appropriate source on windows)  - that's the whole point
why they were introduced. There is no need for seeds nor it can even be
initialized with a seed.
They are, as far as I understand, cryptographically safe random generators.

I suggest reading up on the subject, the RFC and the whole thing. Their
introduction was well covered by various core devs in blog posts.

>

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