License is GPL-2.0-only, is the same as of Linux kernel:
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
Sign-off rule is that of the Linux kernel:
Developer's Certificate of Origin 1.1
By making a contribution to this project, I certify that:
(a) The contribution was created in whole or in part by me and I
have the right to submit it under the open source license
indicated in the file; or
(b) The contribution is based upon previous work that, to the best
of my knowledge, is covered under an appropriate open source
license and I have the right under that license to submit that
work with modifications, whether created in whole or in part
by me, under the same open source license (unless I am
permitted to submit under a different license), as indicated
in the file; or
(c) The contribution was provided directly to me by some other
person who certified (a), (b) or (c) and I have not modified
it.
(d) I understand and agree that this project and the contribution
are public and that a record of the contribution (including all
personal information I submit with it, including my sign-off) is
maintained indefinitely and may be redistributed consistent with
this project or the open source license(s) involved.
Principal author and project maintainer:
ABC <abc@openwall.com> [2008-2019]
Compatibility layer is using code from Linux Kernel and should be
attributed to respective Linux developers.
MurmurHash3 is based on smhasher (2012) of Austin Appleby.
Patch authors and submitters:
Ilya Evseev [2010]
spizer [2010]
Eric W. Biederman [2010]
Giedrius Liubavičius [2010]
Igor Alov [2010]
Valentin V. Yankin [2011] prototype for SNMP-index
Alexey Osipov [2011]
Pavel Boldin [2012]
Alexander Demenshin [2013]
uropek [2013]
shaman [2013]
Jeremy Drake [2013]
Matthew Martin [2016] DKMS fixes
alex-eri [2016, 2017] OpenWRT compatibility
xtaran [2018]
Thadeu Lima de Souza Cascardo @ Canonical [2019]
dbugnar [2019]
Vadim Fedorenko [2019]
Project supporters:
Summa Telecom [2014]
Starlink [2014]
Anonymous
Extensive testing and other help:
Alexander (shulik) [2013]
Igor Diakonov @ Summa Telecom [2014]
Yuriy Dolgoruk @ Summa Telecom [2014]
Andrew Savin @ Starlink [2014]
Alexander Zakharov @ WAW Technologies [2015]
Ivanov Eduard [2015]
Maciej Zdeb [2015]
(Send your names, emails, or nicks to add to the list.)