man/man5/slappw-argon2.5

     SLAPPW-ARGON2 5 "RELEASEDATE" "OpenLDAP LDVERSION"
 Copyright 2020-2021 The OpenLDAP Foundation All Rights Reserved.
 Copying restrictions apply. See COPYRIGHT/LICENSE.
 $OpenLDAP$
 NAME
slappw-argon2 - Argon2 password module to slapd
 SYNOPSIS
ETCDIR/slapd.conf


 moduleload argon2  [ <parameters> ]

 DESCRIPTION

The
 argon2 module to
 slapd (8) provides support for the use of the key derivation function Argon2,
that was selected as the winner of the Password Hashing Competition in July 2015,
in hashed passwords in OpenLDAP.

It does so by providing the additional password scheme
 {ARGON2} for use in slapd.

 CONFIGURATION
The
 argon2 module does not need any configuration,
but it can be configured by giving the following parameters:

 m= <memory> Set memory usage to
 <memory> kiB.

 p= <parallelism> Set parallelism to
 <parallelism> threads. Currently supported only when linked with
 libargon2 .
 t= <iterations> Set the number of iterations to
 <iterations> .
These replace defaults when preparing hashes for new passwords where possible.

After loading the module, the password scheme
 {ARGON2} will be recognised in values of the
 userPassword attribute.

You can then instruct OpenLDAP to use this scheme when processing
the LDAPv3 Password Modify (RFC 3062) extended operations by using the
 password-hash option in
 slapd.conf (5):

 password-hash {ARGON2}


 NOTES
If you want to use the scheme described here with
 slappasswd (8), remember to load the module using its command line options.
The relevant option/value is:


 -o  module-load = argon2

Or if non-default parameters are required:


 -o  module-load =" argon2  [ <param> ...]"

Depending on
 argon2 's location, you may also need:


 -o  module-path = pathspec


 EXAMPLES
Both userPassword LDAP attributes below encode the password
 ' secret ' using different salts:
.EX

userPassword: {ARGON2}$argon2i$v=19$m=4096,t=3,p=1$c2FsdHNhbHQ$DKlexoEJUoZTmkAAC3SaMWk30El9/RvVhlqGo6afIng

userPassword: {ARGON2}$argon2i$v=19$m=4096,t=3,p=1$c2FsdHNhbHRzYWx0$qOCkx9nMeFlaGOO4DUmPDgrlUbgMMuO9T1+vQCFuyzw


 SEE ALSO
 slapd.conf (5),  ldappasswd (1),  slappasswd (8),  ldap (3),
R http://www.OpenLDAP.org/doc/ "OpenLDAP Administrator's Guide"
E

 ACKNOWLEDGEMENTS
This manual page has been written by Peter Marschall based on the
module's README file written by
.MT simon@levermann.de
Simon Levermann
.ME .

 OpenLDAP is developed and maintained by
R http://www.openldap.org/ The OpenLDAP Project
E .  OpenLDAP is derived from University of Michigan LDAP 3.3 Release.