linux-kernel - Generating identifiers similar to UUIDs but without dashes

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Message-ID: <c7463786-82f1-01c8-7f47-e784f2602209@web.de>
Date:   Mon, 14 Jan 2019 08:40:17 +0100
From:   Markus Elfring <Markus.Elfring@....de>
To:     kernel-janitors@...r.kernel.org
Cc:     linux-crypto@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Generating identifiers similar to UUIDs but without dashes

Hello,

The file “/proc/sys/kernel/random/uuid” provides a bit of useful data.
The formal definition of the string representation for universally unique
identifiers requires the use of four dashes for the concatenation of fields.
https://tools.ietf.org/html/rfc4122#page-4
https://stackoverflow.com/questions/24481801/is-uuid-without-dashes-hyphens-valid#answer-24484051

Now I am looking again for possibilities to generate reasonably unique
identifiers also without these dashes.
Can any data processing benefit from the avoidance of such extra characters?

Regards,
Markus