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NAME | SYNOPSIS | DESCRIPTION | OPTIONS | LIMITATIONS | SECURITY CONSIDERATIONS | SEE ALSO | ACKNOWLEDGEMENTS | COLOPHON |
SLAPPASSWD(8C) SLAPPASSWD(8C)
slappasswd - OpenLDAP password utility
SBINDIR/slappasswd [-v] [-u] [-g|-s secret|-T file] [-h hash]
[-c salt-format] [-n] [-o option[=value]]
Slappasswd is used to generate an userPassword value suitable for use
with ldapmodify(1), slapd.conf(5) rootpw configuration directive or
the slapd-config(5) olcRootPW configuration directive.
-v enable verbose mode.
-u Generate RFC 2307 userPassword values (the default). Future
versions of this program may generate alternative syntaxes by
default. This option is provided for forward compatibility.
-s secret
The secret to hash. If this, -g and -T are absent, the user
will be prompted for the secret to hash. -s, -g and -T are
mutually exclusive flags.
-g Generate the secret. If this, -s and -T are absent, the user
will be prompted for the secret to hash. -s, -g and -T are
mutually exclusive flags. If this is present, {CLEARTEXT} is
used as scheme. -g and -h are mutually exclusive flags.
-T "file"
Hash the contents of the file. If this, -g and -s are absent,
the user will be prompted for the secret to hash. -s, -g and
-T and mutually exclusive flags.
-h "scheme"
If -h is specified, one of the following RFC 2307 schemes may
be specified: {CRYPT}, {MD5}, {SMD5}, {SSHA}, and {SHA}. The
default is {SSHA}.
Note that scheme names may need to be protected, due to { and
}, from expansion by the user's command interpreter.
{SHA} and {SSHA} use the SHA-1 algorithm (FIPS 160-1), the
latter with a seed.
{MD5} and {SMD5} use the MD5 algorithm (RFC 1321), the latter
with a seed.
{CRYPT} uses the crypt(3).
{CLEARTEXT} indicates that the new password should be added to
userPassword as clear text. Unless {CLEARTEXT} is used, this
flag is incompatible with option -g.
-c crypt-salt-format
Specify the format of the salt passed to crypt(3) when
generating {CRYPT} passwords. This string needs to be in
sprintf(3) format and may include one (and only one) %s
conversion. This conversion will be substituted with a string
of random characters from [A-Za-z0-9./]. For example, '%.2s'
provides a two character salt and '$1$%.8s' tells some
versions of crypt(3) to use an MD5 algorithm and provides 8
random characters of salt. The default is '%s', which
provides 31 characters of salt.
-n Omit the trailing newline; useful to pipe the credentials into
a command.
-o option[=value]
Specify an option with a(n optional) value. Possible generic
options/values are:
module-path=<pathspec> (see `modulepath' in slapd.conf(5))
module-load=<filename> (see `moduleload' in slapd.conf(5))
You can load a dynamically loadable password hash module by
using this option.
The practice of storing hashed passwords in userPassword violates
Standard Track (RFC 4519) schema specifications and may hinder
interoperability. A new attribute type, authPassword, to hold hashed
passwords has been defined (RFC 3112), but is not yet implemented in
slapd(8).
It should also be noted that the behavior of crypt(3) is platform
specific.
Use of hashed passwords does not protect passwords during protocol
transfer. TLS or other eavesdropping protections should be in-place
before using LDAP simple bind.
The hashed password values should be protected as if they were clear
text passwords.
ldappasswd(1), ldapmodify(1), slapd(8), slapd.conf(5),
slapd-config(5), RFC 2307, RFC 4519, RFC 3112
"OpenLDAP Administrator's Guide" (http://www.OpenLDAP.org/doc/admin/)
OpenLDAP Software is developed and maintained by The OpenLDAP Project
<http://www.openldap.org/>. OpenLDAP Software is derived from the
University of Michigan LDAP 3.3 Release.
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 ⟨http://www.openldap.org/⟩. If you
have a bug report for this manual page, see
⟨http://www.openldap.org/its/⟩. This page was obtained from the
project's upstream Git repository
⟨git://git.openldap.org/openldap.git⟩ on 2017-07-05. If you discover
any rendering problems in this HTML version of the page, or you
believe there is a better or more up-to-date source for the page, or
you have corrections or improvements to the information in this
COLOPHON (which is not part of the original manual page), send a mail
to man-pages@man7.org
OpenLDAP LDVERSION RELEASEDATE SLAPPASSWD(8C)
Pages that refer to this page: ldapcompare(1), slapd.conf(5), slapd-config(5), slapd(8)