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SLAPPASSWD(8C)


NAME

  slappasswd - OpenLDAP password utility


SYNOPSIS

  /usr/internet/openldap/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.

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