slappw-argon2(5) — Linux manual page


SLAPPW-ARGON2(5)           File Formats Manual          SLAPPW-ARGON2(5)

NAME         top

       slappw-argon2 - Argon2 password module to slapd

SYNOPSIS         top


              moduleload argon2 [<parameters>]

DESCRIPTION         top

       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.


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

              Set memory usage to <memory> kiB.

              Set parallelism to <parallelism> threads.

              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}

       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

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

              -o module-path=pathspec

EXAMPLES         top

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

       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         top

       slapd.conf(5), ldappasswd(1), slappasswd(8), ldap(3),

       "OpenLDAP Administrator's Guide" ⟨


       This manual page has been written by Peter Marschall based on the
       module's README file written by Simon Levermann

       OpenLDAP is developed and maintained by The OpenLDAP Project 
       ⟨⟩.  OpenLDAP is derived from University
       of Michigan LDAP 3.3 Release.

COLOPHON         top

       This page is part of the OpenLDAP (an open source implementation
       of the Lightweight Directory Access Protocol) project.
       Information about the project can be found at 
       ⟨⟩.  If you have a bug report for this
       manual page, see ⟨⟩.  This page was
       obtained from the project's upstream Git repository
       ⟨⟩ on 2021-04-01.
       (At that time, the date of the most recent commit that was found
       in the repository was 2021-04-01.)  If you discover any rendering
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       (which is not part of the original manual page), send a mail to

OpenLDAP LDVERSION             RELEASEDATE              SLAPPW-ARGON2(5)