From: Jean Louis <bugs@gnu.support>
To: help-gnu-emacs@gnu.org
Subject: About randomity, entropy, random passwords - was Re: Noob dumb question (extending emacs)
Date: Mon, 25 Oct 2021 22:56:47 +0300 [thread overview]
Message-ID: <YXcL/z/q0//pLnuC@protected.localdomain> (raw)
In-Reply-To: <8735ooopan.fsf@zoho.eu>
* Emanuel Berg via Users list for the GNU Emacs text editor <help-gnu-emacs@gnu.org> [2021-10-25 22:53]:
> Emanuel Berg via Users list for the GNU Emacs text editor wrote:
>
> >> (defun rcd-read-urandom (&optional length)
> >> "I am also free to modify the Emacs Lisp unlimited times."
> >> (shell-command-to-string "head -n 1 /dev/urandom"))
> >
> > So you had one as well ...
> > Check how head does it then ... that's how to get aHEAD in
> > software piracy ...
>
> Wait ... didn't we see it with pwgen?
>
> You need to write a dynamic module, in C for this.
>
> /dev/random isn't a regular file ... no can do.
I was just testing it, I did not use /dev/urandm ever. It can be done,
but that is slow and not portable.
This seem to work blazing fast and is portable enough, I expect it to
work on any GNU Emacs version.
(defun rcd-random-md5-string ()
(md5 (concat (emacs-uptime) (format-time-string "%N %6N %3N"))))
(rcd-random-md5-string) ⇒ "5ae0b5bd4f7bd84a877062b104a8f77f"
--
Jean
Take action in Free Software Foundation campaigns:
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next prev parent reply other threads:[~2021-10-25 19:56 UTC|newest]
Thread overview: 127+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-19 22:12 Noob dumb question (extending emacs) Ivano Da Milano
2021-10-20 0:36 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-20 6:34 ` Marcin Borkowski
2021-10-20 18:13 ` H. Dieter Wilhelm
2021-10-20 6:53 ` Jean Louis
2021-10-20 8:23 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-20 17:10 ` Ivano Da Milano
2021-10-20 18:41 ` Tassilo Horn
2021-10-20 18:56 ` Ken Goldman
2021-10-20 19:01 ` Ivano Da Milano
2021-10-20 19:45 ` Jean Louis
2021-10-21 5:27 ` Ivano Da Milano
2021-10-21 7:40 ` H. Dieter Wilhelm
2021-10-21 15:46 ` Ivano Da Milano
2021-10-21 16:03 ` H. Dieter Wilhelm
2021-10-21 17:49 ` Ivano Da Milano
2021-10-21 18:51 ` Jean Louis
2021-10-21 20:02 ` H. Dieter Wilhelm
2021-10-21 22:58 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-22 6:59 ` H. Dieter Wilhelm
2021-10-22 12:18 ` Jean Louis
2021-10-22 12:56 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-22 13:14 ` Yuri Khan
2021-10-22 17:51 ` Jean Louis
2021-10-22 18:50 ` Yuri Khan
2021-10-22 19:29 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-22 21:22 ` Jean Louis
2021-10-23 18:08 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-24 7:10 ` Jean Louis
2021-10-24 9:35 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-24 17:41 ` Jean Louis
2021-10-24 18:20 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-25 5:47 ` Jean Louis
2021-10-25 9:40 ` Yuri Khan
2021-10-25 10:23 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-25 12:41 ` Jean Louis
2021-10-25 19:22 ` Jean Louis
2021-10-25 19:46 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-25 19:52 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-25 19:56 ` Jean Louis [this message]
2021-10-25 20:29 ` About randomity, entropy, random passwords - was " Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-25 20:00 ` Jean Louis
2021-10-25 19:56 ` Yuri Khan
2021-10-25 20:24 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-25 20:34 ` Jean Louis
2021-10-25 20:29 ` About randomity, entropy, random passwords - was " Jean Louis
2021-10-28 20:39 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-23 8:41 ` Michael Heerdegen
2021-10-23 10:16 ` Yuri Khan
2021-10-23 10:46 ` Michael Heerdegen
2021-10-23 18:27 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-24 8:16 ` Michael Heerdegen
2021-10-28 2:24 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-28 11:41 ` Michael Heerdegen
2021-10-28 12:07 ` tomas
2021-10-28 20:56 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-28 22:54 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-31 20:46 ` Michael Heerdegen
2021-11-01 2:09 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-01 19:38 ` Michael Heerdegen
2021-11-03 1:06 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-03 21:24 ` Michael Heerdegen
2021-11-03 22:16 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-05 19:03 ` Jean Louis
2021-11-05 21:50 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-31 20:42 ` Michael Heerdegen
2021-11-05 18:59 ` Jean Louis
2021-10-23 12:54 ` Michael Heerdegen
2021-10-23 13:07 ` Yuri Khan
2021-10-23 18:41 ` ERC links to man pages (was: Re: Noob dumb question (extending emacs)) Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-24 7:08 ` Noob dumb question (extending emacs) Jean Louis
2021-10-24 8:57 ` Michael Heerdegen
2021-10-24 17:59 ` Jean Louis
2021-10-25 9:18 ` Michael Heerdegen
2021-10-25 9:33 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-25 19:44 ` Jean Louis
2021-10-25 20:20 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-25 20:33 ` Jean Louis
2021-10-25 12:45 ` Jean Louis
2021-10-25 13:20 ` Michael Heerdegen
2021-10-25 19:54 ` About randomity, entropy, random passwords - was " Jean Louis
[not found] ` <YXcLIC+doASdNFll@protected.localdomain>
[not found] ` <87cznryfnz.fsf@web.de>
2021-10-26 18:52 ` Jean Louis
2021-10-23 18:22 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-23 19:52 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-24 6:43 ` Jean Louis
2021-10-24 8:28 ` Michael Heerdegen
2021-10-24 18:03 ` Jean Louis
2021-10-24 9:31 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-24 18:09 ` Jean Louis
2021-10-24 18:30 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-25 5:31 ` Jean Louis
2021-10-28 2:33 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-11-05 19:09 ` Passwords -- " Jean Louis
2021-11-05 22:00 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-23 18:17 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-24 8:42 ` Michael Heerdegen
2021-10-22 18:55 ` Yuri Khan
2021-10-22 19:30 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-22 21:31 ` Jean Louis
2021-10-22 22:21 ` H. Dieter Wilhelm
2021-10-23 10:46 ` Yuri Khan
2021-10-23 18:13 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-24 7:48 ` Yuri Khan
2021-10-24 9:37 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-24 6:45 ` Jean Louis
2021-10-24 8:50 ` Michael Heerdegen
2021-10-24 17:20 ` Jean Louis
2021-10-24 18:17 ` Yuri Khan
2021-10-24 19:07 ` Jean Louis
2021-10-24 19:05 ` Jean Louis
2021-10-25 0:12 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-25 3:54 ` Jean Louis
2021-10-22 18:57 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-22 18:53 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-22 17:48 ` Jean Louis
2021-10-22 19:26 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-21 19:45 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-20 4:04 ` Ivano Da Milano
2021-10-20 5:46 ` H. Dieter Wilhelm
2021-10-20 5:58 ` Emanuel Berg via Users list for the GNU Emacs text editor
[not found] ` <CAPWV0kyjr0=FrkVkH+Wf573fddX3pM4iiEfkQJ6oe1J_pQuNPA@mail.gmail.com>
[not found] ` <86a6j3wo7y.fsf@duenenhof-wilhelm.de>
[not found] ` <CAPWV0kyogB+u0X4dUhpyEox6pih1MJkjE2e_OoqQoP81NZceHQ@mail.gmail.com>
2021-10-20 18:31 ` Fwd: " Ivano Da Milano
2021-10-20 6:50 ` Jean Louis
2021-10-20 8:20 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-20 14:13 ` Jean Louis
2021-10-21 19:56 ` Emanuel Berg via Users list for the GNU Emacs text editor
2021-10-23 10:51 ` Tassilo Horn
2021-10-23 18:36 ` Emanuel Berg via Users list for the GNU Emacs text editor
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