slappasswd

SLAPPASSWD(8C)                                                  SLAPPASSWD(8C)



NAME
       slappasswd - OpenLDAP password utility

SYNOPSIS
       /usr/lib/ultrapossum/slapd/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.



OpenLDAP 2.2.20sb3                2004/12/30                    SLAPPASSWD(8C)