From: Arno Wagner <arno@wagner.name>
To: cryptsetup@lists.linux.dev
Subject: Re: Filling a device with random data
Date: Tue, 14 Feb 2023 23:17:11 +0100 [thread overview]
Message-ID: <20230214221711.GA12121@tansi.org> (raw)
In-Reply-To: <Y+VDmGLcSavEBFig@gmail.com>
As I said, it is old. Old like some not having
hardware support and /dev/urandom being dog-slow.
Toaday, it is not really a problem doing this fast.
Regards,
Arno
On Thu, Feb 09, 2023 at 20:03:52 CET, Eric Biggers wrote:
> While this is a creative use of dm-crypt, a cleaner way to generate very
> high throughput cryptographically secure random data (specifically, even
> higher throughput than /dev/urandom which is usually good enough) is to
> just generate it in userspace. For example, the command 'openssl rand
> $LENGTH' does this.
>
> - Eric
--
Arno Wagner, Dr. sc. techn., Dipl. Inform., Email: arno@wagner.name
GnuPG: ID: CB5D9718 FP: 12D6 C03B 1B30 33BB 13CF B774 E35C 5FA1 CB5D 9718
----
A good decision is based on knowledge and not on numbers. -- Plato
If it's in the news, don't worry about it. The very definition of
"news" is "something that hardly ever happens." -- Bruce Schneier
next prev parent reply other threads:[~2023-02-14 22:17 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-02-08 21:09 Filling a device with random data David Joaquín Shourabi Porcel
2023-02-09 4:02 ` Arno Wagner
2023-02-09 15:01 ` David Joaquín Shourabi Porcel
2023-02-09 15:37 ` Michael Kjörling
2023-02-09 19:03 ` Eric Biggers
2023-02-14 22:17 ` Arno Wagner [this message]
2023-02-16 11:05 ` Arno Wagner
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