slappasswd(8C)

     NAME
          slappasswd - OpenLDAP password utility

     SYNOPSIS
          /usr/sbin/slappasswd [-v] [-u] [-s secret|-T file] [-h hash]
          [-c salt-format]

     DESCRIPTION
          Slappasswd is used to generate an userPassword value
          suitable for use with ldapmodify(1) or slapd.conf(5) rootpw
          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 and -T are absent, the
               user will be prompted for the secret to hash.  -s and
               -T and mutually exclusive flags.

          -T file
               Hash the contents of the file.  If this and -s are
               absent, the user will be prompted for the secret to
               hash.  -s 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.

          -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 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.

     LIMITATIONS
          The practice storing hashed passwords in userPassword
          violates Standard Track (RFC 2256) 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.

     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) RFC
          2307 RFC 2256 RFC 3112

          "OpenLDAP Administrator's Guide"
          (http://www.OpenLDAP.org/doc/admin/)

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