SLAPPASSWD(8C)							SLAPPASSWD(8C)



NAME
       slappasswd - OpenLDAP password utility

SYNOPSIS
       /usr/sbin/slappasswd   [-v]   [-u]   [-g|-s secret|-T file]   [-h hash]
       [-c salt-format] [-n] [-o option[=value]]

DESCRIPTION
       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.

OPTIONS
       -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  lat-
	      ter 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  generat-
	      ing  {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 charac-
	      ters 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.

LIMITATIONS
       The practice of storing hashed passwords in userPassword violates Stan-
       dard Track (RFC 4519) schema specifications and may  hinder  interoper-
       ability.	  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  spe-
       cific.

SECURITY CONSIDERATIONS
       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.

SEE ALSO
       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/)

ACKNOWLEDGEMENTS
       OpenLDAP	 Software  is developed and maintained by The OpenLDAP Project
       <http://www.openldap.org/>.  OpenLDAP Software is derived from  Univer-
       sity of Michigan LDAP 3.3 Release.



OpenLDAP 2.4.40			  2014/09/20			SLAPPASSWD(8C)