public domain dedication in argon2
argon2 in https://github.com/P-H-C/phc-winner-argon2/blob/master/src/encoding.c#L49 uses the wording:
The code was originally written by Thomas Pornin pornin@bolet.org, to whom comments and remarks may be sent. It is released under what should amount to Public Domain or its closest equivalent; the following mantra is supposed to incarnate that fact with all the proper legal rituals:
This file is provided under the terms of Creative Commons CC0 1.0 Public Domain Dedication. To the extent possible under law, the author (Thomas Pornin) has waived all copyright and related or neighboring rights to this file. This work is published from: Canada.
Creating an issue per @rfontanaref request in !452 (comment 1652495410)