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+Network Working Group                                            M. Wahl
+Request for Comments: 2256                           Critical Angle Inc.
+Category: Standards Track                                  December 1997
+
+
+       A Summary of the X.500(96) User Schema for use with LDAPv3
+
+1. Status of this Memo
+
+   This document specifies an Internet standards track protocol for the
+   Internet community, and requests discussion and suggestions for
+   improvements.  Please refer to the current edition of the "Internet
+   Official Protocol Standards" (STD 1) for the standardization state
+   and status of this protocol.  Distribution of this memo is unlimited.
+
+Copyright Notice
+
+   Copyright (C) The Internet Society (1997).  All Rights Reserved.
+
+IESG Note
+
+   This document describes a directory access protocol that provides
+   both read and update access.  Update access requires secure
+   authentication, but this document does not mandate implementation of
+   any satisfactory authentication mechanisms.
+
+   In accordance with RFC 2026, section 4.4.1, this specification is
+   being approved by IESG as a Proposed Standard despite this
+   limitation, for the following reasons:
+
+   a. to encourage implementation and interoperability testing of
+      these protocols (with or without update access) before they
+      are deployed, and
+
+   b. to encourage deployment and use of these protocols in read-only
+      applications.  (e.g. applications where LDAPv3 is used as
+      a query language for directories which are updated by some
+      secure mechanism other than LDAP), and
+
+   c. to avoid delaying the advancement and deployment of other Internet
+      standards-track protocols which require the ability to query, but
+      not update, LDAPv3 directory servers.
+
+   Readers are hereby warned that until mandatory authentication
+   mechanisms are standardized, clients and servers written according to
+   this specification which make use of update functionality are
+   UNLIKELY TO INTEROPERATE, or MAY INTEROPERATE ONLY IF AUTHENTICATION
+   IS REDUCED TO AN UNACCEPTABLY WEAK LEVEL.
+
+
+
+Wahl                        Standards Track                     [Page 1]
+
+RFC 2256                     LDAPv3 Schema                 December 1997
+
+
+   Implementors are hereby discouraged from deploying LDAPv3 clients or
+   servers which implement the update functionality, until a Proposed
+   Standard for mandatory authentication in LDAPv3 has been approved and
+   published as an RFC.
+
+2. Abstract
+
+   This document provides an overview of the attribute types and object
+   classes defined by the ISO and ITU-T committees in the X.500
+   documents, in particular those intended for use by directory clients.
+   This is the most widely used schema for LDAP/X.500 directories, and
+   many other schema definitions for white pages objects use it as a
+   basis.  This document does not cover attributes used for the
+   administration of X.500 directory servers, nor does it include
+   attributes defined by other ISO/ITU-T documents.
+
+   The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
+   "SHOULD", "SHOULD NOT", "RECOMMENDED",  "MAY", and "OPTIONAL" in this
+   document are to be interpreted as described in RFC 2119 [6].
+
+3. General Issues
+
+   This document references syntaxes given in section 6 of this document
+   and section 6 of [1].  Matching rules are listed in section 8 of this
+   document and section 8 of [1].
+
+   The attribute type and object class definitions are written using the
+   BNF form of AttributeTypeDescription and ObjectClassDescription given
+   in [1].  Lines have been folded for readability.
+
+4. Source
+
+   The schema definitions in this document are based on those found in
+   X.500 [2],[3],[4],[5], and updates to these documents, specifically:
+
+        Sections                Source
+        ============            ============
+        5.1  - 5.2              X.501(93)
+        5.3  - 5.36             X.520(88)
+        5.37 - 5.41             X.509(93)
+        5.42 - 5.52             X.520(93)
+        5.53 - 5.54             X.509(96)
+        5.55                    X.520(96)
+        6.1                     RFC 1274
+        6.2                     (new syntax)
+        6.3  - 6.6              RFC 1274
+        7.1  - 7.2              X.501(93)
+        7.3  - 7.18             X.521(93)
+
+
+
+Wahl                        Standards Track                     [Page 2]
+
+RFC 2256                     LDAPv3 Schema                 December 1997
+
+
+        7.19 - 7.21             X.509(96)
+        7.22                    X.521(96)
+
+   Some attribute names are different from those found in X.520(93).
+
+   Three new attributes supportedAlgorithms, deltaRevocationList and
+   dmdName, and the objectClass dmd, are defined in the X.500(96)
+   documents.
+
+5. Attribute Types
+
+   An LDAP server implementation SHOULD recognize the attribute types
+   described in this section.
+
+5.1. objectClass
+
+   The values of the objectClass attribute describe the kind of object
+   which an entry represents.  The objectClass attribute is present in
+   every entry, with at least two values.  One of the values is either
+   "top" or "alias".
+
+    ( 2.5.4.0 NAME 'objectClass' EQUALITY objectIdentifierMatch
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.38 )
+
+5.2. aliasedObjectName
+
+   The aliasedObjectName attribute is used by the directory service if
+   the entry containing this attribute is an alias.
+
+    ( 2.5.4.1 NAME 'aliasedObjectName' EQUALITY distinguishedNameMatch
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.12 SINGLE-VALUE )
+
+5.3. knowledgeInformation
+
+   This attribute is no longer used.
+
+    ( 2.5.4.2 NAME 'knowledgeInformation' EQUALITY caseIgnoreMatch
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{32768} )
+
+5.4. cn
+
+   This is the X.500 commonName attribute, which contains a name of an
+   object.  If the object corresponds to a person, it is typically the
+   person's full name.
+
+    ( 2.5.4.3 NAME 'cn' SUP name )
+
+
+
+
+
+Wahl                        Standards Track                     [Page 3]
+
+RFC 2256                     LDAPv3 Schema                 December 1997
+
+
+5.5. sn
+
+   This is the X.500 surname attribute, which contains the family name
+   of a person.
+
+    ( 2.5.4.4 NAME 'sn' SUP name )
+
+5.6. serialNumber
+
+   This attribute contains the serial number of a device.
+
+    ( 2.5.4.5 NAME 'serialNumber' EQUALITY caseIgnoreMatch
+      SUBSTR caseIgnoreSubstringsMatch
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.44{64} )
+
+5.7. c
+
+   This attribute contains a two-letter ISO 3166 country code
+   (countryName).
+
+    ( 2.5.4.6 NAME 'c' SUP name SINGLE-VALUE )
+
+5.8. l
+
+   This attribute contains the name of a locality, such as a city,
+   county or other geographic region (localityName).
+
+    ( 2.5.4.7 NAME 'l' SUP name )
+
+5.9. st
+
+   This attribute contains the full name of a state or province
+   (stateOrProvinceName).
+
+    ( 2.5.4.8 NAME 'st' SUP name )
+
+5.10. street
+
+   This attribute contains the physical address of the object to which
+   the entry corresponds, such as an address for package delivery
+   (streetAddress).
+
+    ( 2.5.4.9 NAME 'street' EQUALITY caseIgnoreMatch
+      SUBSTR caseIgnoreSubstringsMatch
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{128} )
+
+
+
+
+
+
+Wahl                        Standards Track                     [Page 4]
+
+RFC 2256                     LDAPv3 Schema                 December 1997
+
+
+5.11. o
+
+   This attribute contains the name of an organization
+   (organizationName).
+
+    ( 2.5.4.10 NAME 'o' SUP name )
+
+5.12. ou
+
+   This attribute contains the name of an organizational unit
+   (organizationalUnitName).
+
+    ( 2.5.4.11 NAME 'ou' SUP name )
+
+5.13. title
+
+   This attribute contains the title, such as "Vice President", of a
+   person in their organizational context.  The "personalTitle"
+   attribute would be used for a person's title independent of their job
+   function.
+
+    ( 2.5.4.12 NAME 'title' SUP name )
+
+5.14. description
+
+   This attribute contains a human-readable description of the object.
+
+    ( 2.5.4.13 NAME 'description' EQUALITY caseIgnoreMatch
+      SUBSTR caseIgnoreSubstringsMatch
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{1024} )
+
+5.15. searchGuide
+
+   This attribute is for use by X.500 clients in constructing search
+   filters. It is obsoleted by enhancedSearchGuide, described below in
+   5.48.
+
+    ( 2.5.4.14 NAME 'searchGuide'
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.25 )
+
+5.16. businessCategory
+
+   This attribute describes the kind of business performed by an
+   organization.
+
+   ( 2.5.4.15 NAME 'businessCategory' EQUALITY caseIgnoreMatch
+     SUBSTR caseIgnoreSubstringsMatch
+     SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{128} )
+
+
+
+Wahl                        Standards Track                     [Page 5]
+
+RFC 2256                     LDAPv3 Schema                 December 1997
+
+
+5.17. postalAddress
+
+   ( 2.5.4.16 NAME 'postalAddress' EQUALITY caseIgnoreListMatch
+     SUBSTR caseIgnoreListSubstringsMatch
+     SYNTAX 1.3.6.1.4.1.1466.115.121.1.41 )
+
+5.18. postalCode
+
+   ( 2.5.4.17 NAME 'postalCode' EQUALITY caseIgnoreMatch
+     SUBSTR caseIgnoreSubstringsMatch
+     SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{40} )
+
+5.19. postOfficeBox
+
+   ( 2.5.4.18 NAME 'postOfficeBox' EQUALITY caseIgnoreMatch
+     SUBSTR caseIgnoreSubstringsMatch
+     SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{40} )
+
+5.20. physicalDeliveryOfficeName
+
+   ( 2.5.4.19 NAME 'physicalDeliveryOfficeName' EQUALITY caseIgnoreMatch
+     SUBSTR caseIgnoreSubstringsMatch
+     SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{128} )
+
+5.21. telephoneNumber
+
+   ( 2.5.4.20 NAME 'telephoneNumber' EQUALITY telephoneNumberMatch
+     SUBSTR telephoneNumberSubstringsMatch
+     SYNTAX 1.3.6.1.4.1.1466.115.121.1.50{32} )
+
+5.22. telexNumber
+
+   ( 2.5.4.21 NAME 'telexNumber'
+     SYNTAX 1.3.6.1.4.1.1466.115.121.1.52 )
+
+5.23. teletexTerminalIdentifier
+
+   ( 2.5.4.22 NAME 'teletexTerminalIdentifier'
+     SYNTAX 1.3.6.1.4.1.1466.115.121.1.51 )
+
+5.24. facsimileTelephoneNumber
+
+   ( 2.5.4.23 NAME 'facsimileTelephoneNumber'
+     SYNTAX 1.3.6.1.4.1.1466.115.121.1.22 )
+
+
+
+
+
+
+
+Wahl                        Standards Track                     [Page 6]
+
+RFC 2256                     LDAPv3 Schema                 December 1997
+
+
+5.25. x121Address
+
+   ( 2.5.4.24 NAME 'x121Address' EQUALITY numericStringMatch
+     SUBSTR numericStringSubstringsMatch
+     SYNTAX 1.3.6.1.4.1.1466.115.121.1.36{15} )
+
+5.26. internationaliSDNNumber
+
+   ( 2.5.4.25 NAME 'internationaliSDNNumber' EQUALITY numericStringMatch
+     SUBSTR numericStringSubstringsMatch
+     SYNTAX 1.3.6.1.4.1.1466.115.121.1.36{16} )
+
+5.27. registeredAddress
+
+   This attribute holds a postal address suitable for reception of
+   telegrams or expedited documents, where it is necessary to have the
+   recipient accept delivery.
+
+    ( 2.5.4.26 NAME 'registeredAddress' SUP postalAddress
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.41 )
+
+5.28. destinationIndicator
+
+   This attribute is used for the telegram service.
+
+    ( 2.5.4.27 NAME 'destinationIndicator' EQUALITY caseIgnoreMatch
+      SUBSTR caseIgnoreSubstringsMatch
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.44{128} )
+
+5.29. preferredDeliveryMethod
+
+    ( 2.5.4.28 NAME 'preferredDeliveryMethod'
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.14
+      SINGLE-VALUE )
+
+5.30. presentationAddress
+
+   This attribute contains an OSI presentation address.
+
+    ( 2.5.4.29 NAME 'presentationAddress'
+      EQUALITY presentationAddressMatch
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.43
+      SINGLE-VALUE )
+
+
+
+
+
+
+
+
+Wahl                        Standards Track                     [Page 7]
+
+RFC 2256                     LDAPv3 Schema                 December 1997
+
+
+5.31. supportedApplicationContext
+
+   This attribute contains the identifiers of OSI application contexts.
+
+    ( 2.5.4.30 NAME 'supportedApplicationContext'
+      EQUALITY objectIdentifierMatch
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.38 )
+
+5.32. member
+
+    ( 2.5.4.31 NAME 'member' SUP distinguishedName )
+
+5.33. owner
+
+    ( 2.5.4.32 NAME 'owner' SUP distinguishedName )
+
+5.34. roleOccupant
+
+    ( 2.5.4.33 NAME 'roleOccupant' SUP distinguishedName )
+
+5.35. seeAlso
+
+    ( 2.5.4.34 NAME 'seeAlso' SUP distinguishedName )
+
+5.36. userPassword
+
+    ( 2.5.4.35 NAME 'userPassword' EQUALITY octetStringMatch
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.40{128} )
+
+   Passwords are stored using an Octet String syntax and are not
+   encrypted.  Transfer of cleartext passwords are strongly discouraged
+   where the underlying transport service cannot guarantee
+   confidentiality and may result in disclosure of the password to
+   unauthorized parties.
+
+5.37. userCertificate
+
+   This attribute is to be stored and requested in the binary form, as
+   'userCertificate;binary'.
+
+    ( 2.5.4.36 NAME 'userCertificate'
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.8 )
+
+5.38. cACertificate
+
+   This attribute is to be stored and requested in the binary form, as
+   'cACertificate;binary'.
+
+
+
+
+Wahl                        Standards Track                     [Page 8]
+
+RFC 2256                     LDAPv3 Schema                 December 1997
+
+
+    ( 2.5.4.37 NAME 'cACertificate'
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.8 )
+
+5.39. authorityRevocationList
+
+   This attribute is to be stored and requested in the binary form, as
+   'authorityRevocationList;binary'.
+
+    ( 2.5.4.38 NAME 'authorityRevocationList'
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.9 )
+
+5.40. certificateRevocationList
+
+   This attribute is to be stored and requested in the binary form, as
+   'certificateRevocationList;binary'.
+
+    ( 2.5.4.39 NAME 'certificateRevocationList'
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.9 )
+
+5.41. crossCertificatePair
+
+   This attribute is to be stored and requested in the binary form, as
+   'crossCertificatePair;binary'.
+
+    ( 2.5.4.40 NAME 'crossCertificatePair'
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.10 )
+
+5.42. name
+
+   The name attribute type is the attribute supertype from which string
+   attribute types typically used for naming may be formed.  It is
+   unlikely that values of this type itself will occur in an entry. LDAP
+   server implementations which do not support attribute subtyping need
+   not recognize this attribute in requests.   Client implementations
+   MUST NOT assume that LDAP servers are capable of performing attribute
+   subtyping.
+
+    ( 2.5.4.41 NAME 'name' EQUALITY caseIgnoreMatch
+      SUBSTR caseIgnoreSubstringsMatch
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{32768} )
+
+5.43. givenName
+
+   The givenName attribute is used to hold the part of a person's name
+   which is not their surname nor middle name.
+
+    ( 2.5.4.42 NAME 'givenName' SUP name )
+
+
+
+
+Wahl                        Standards Track                     [Page 9]
+
+RFC 2256                     LDAPv3 Schema                 December 1997
+
+
+5.44. initials
+
+   The initials attribute contains the initials of some or all of an
+   individuals names, but not the surname(s).
+
+    ( 2.5.4.43 NAME 'initials' SUP name )
+
+5.45. generationQualifier
+
+   The generationQualifier attribute contains the part of the name which
+   typically is the suffix, as in "IIIrd".
+
+    ( 2.5.4.44 NAME 'generationQualifier' SUP name )
+
+5.46. x500UniqueIdentifier
+
+   The x500UniqueIdentifier attribute is used to distinguish between
+   objects when a distinguished name has been reused.  This is a
+   different attribute type from both the "uid" and "uniqueIdentifier"
+   types.
+
+    ( 2.5.4.45 NAME 'x500UniqueIdentifier' EQUALITY bitStringMatch
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.6 )
+
+5.47. dnQualifier
+
+   The dnQualifier attribute type specifies disambiguating information
+   to add to the relative distinguished name of an entry.  It is
+   intended for use when merging data from multiple sources in order to
+   prevent conflicts between entries which would otherwise have the same
+   name. It is recommended that the value of the dnQualifier attribute
+   be the same for all entries from a particular source.
+
+    ( 2.5.4.46 NAME 'dnQualifier' EQUALITY caseIgnoreMatch
+      ORDERING caseIgnoreOrderingMatch SUBSTR caseIgnoreSubstringsMatch
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.44 )
+
+5.48. enhancedSearchGuide
+
+   This attribute is for use by X.500 clients in constructing search
+   filters.
+
+    ( 2.5.4.47 NAME 'enhancedSearchGuide'
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.21 )
+
+
+
+
+
+
+
+Wahl                        Standards Track                    [Page 10]
+
+RFC 2256                     LDAPv3 Schema                 December 1997
+
+
+5.49. protocolInformation
+
+   This attribute is used in conjunction with the presentationAddress
+   attribute, to provide additional information to the OSI network
+   service.
+
+    ( 2.5.4.48 NAME 'protocolInformation'
+      EQUALITY protocolInformationMatch
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.42 )
+
+5.50. distinguishedName
+
+   This attribute type is not used as the name of the object itself, but
+   it is instead a base type from which attributes with DN syntax
+   inherit.
+
+   It is unlikely that values of this type itself will occur in an
+   entry.  LDAP server implementations which do not support attribute
+   subtyping need not recognize this attribute in requests.   Client
+   implementations MUST NOT assume that LDAP servers are capable of
+   performing attribute subtyping.
+
+    ( 2.5.4.49 NAME 'distinguishedName' EQUALITY distinguishedNameMatch
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.12 )
+
+5.51. uniqueMember
+
+    ( 2.5.4.50 NAME 'uniqueMember' EQUALITY uniqueMemberMatch
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.34 )
+
+5.52. houseIdentifier
+
+   This attribute is used to identify a building within a location.
+
+    ( 2.5.4.51 NAME 'houseIdentifier' EQUALITY caseIgnoreMatch
+      SUBSTR caseIgnoreSubstringsMatch
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.15{32768} )
+
+5.53. supportedAlgorithms
+
+   This attribute is to be stored and requested in the binary form, as
+   'supportedAlgorithms;binary'.
+
+    ( 2.5.4.52 NAME 'supportedAlgorithms'
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.49 )
+
+
+
+
+
+
+Wahl                        Standards Track                    [Page 11]
+
+RFC 2256                     LDAPv3 Schema                 December 1997
+
+
+5.54. deltaRevocationList
+
+   This attribute is to be stored and requested in the binary form, as
+   'deltaRevocationList;binary'.
+
+    ( 2.5.4.53 NAME 'deltaRevocationList'
+      SYNTAX 1.3.6.1.4.1.1466.115.121.1.9 )
+
+5.55. dmdName
+
+   The value of this attribute specifies a directory management domain
+   (DMD), the administrative authority which operates the directory
+   server.
+
+    ( 2.5.4.54 NAME 'dmdName' SUP name )
+
+6. Syntaxes
+
+   Servers SHOULD recognize the syntaxes defined in this section.  Each
+   syntax begins with a sample value of the ldapSyntaxes attribute which
+   defines the OBJECT IDENTIFIER of the syntax.  The descriptions of
+   syntax names are not carried in protocol, and are not guaranteed to
+   be unique.
+
+6.1. Delivery Method
+
+   ( 1.3.6.1.4.1.1466.115.121.1.14 DESC 'Delivery Method' )
+
+   Values in this syntax are encoded according to the following BNF:
+
+      delivery-value = pdm / ( pdm whsp "$" whsp delivery-value )
+
+      pdm = "any" / "mhs" / "physical" / "telex" / "teletex" /
+                "g3fax" / "g4fax" / "ia5" / "videotex" / "telephone"
+
+   Example:
+
+      telephone
+
+6.2. Enhanced Guide
+
+   ( 1.3.6.1.4.1.1466.115.121.1.21 DESC 'Enhanced Guide' )
+
+   Values in this syntax are encoded according to the following BNF:
+
+      EnhancedGuide = woid whsp "#" whsp criteria whsp "#" whsp subset
+
+      subset = "baseobject" / "oneLevel" / "wholeSubtree"
+
+
+
+Wahl                        Standards Track                    [Page 12]
+
+RFC 2256                     LDAPv3 Schema                 December 1997
+
+
+   The criteria production is defined in the Guide syntax below.  This
+   syntax has been added subsequent to RFC 1778.
+
+   Example:
+
+      person#(sn)#oneLevel
+
+6.3. Guide
+
+   ( 1.3.6.1.4.1.1466.115.121.1.25 DESC 'Guide' )
+
+   Values in this syntax are encoded according to the following BNF:
+
+      guide-value = [ object-class "#" ] criteria
+
+      object-class = woid
+
+      criteria = criteria-item / criteria-set / ( "!" criteria )
+
+      criteria-set = ( [ "(" ] criteria "&" criteria-set [ ")" ] ) /
+                     ( [ "(" ] criteria "|" criteria-set [ ")" ] )
+
+      criteria-item = [ "(" ] attributetype "$" match-type [ ")" ]
+
+      match-type = "EQ" / "SUBSTR" / "GE" / "LE" / "APPROX"
+
+   This syntax should not be used for defining new attributes.
+
+6.4. Octet String
+
+   ( 1.3.6.1.4.1.1466.115.121.1.40 DESC 'Octet String' )
+
+   Values in this syntax are encoded as octet strings.
+
+
+   Example:
+
+      secret
+
+6.5. Teletex Terminal Identifier
+
+   ( 1.3.6.1.4.1.1466.115.121.1.51 DESC 'Teletex Terminal Identifier' )
+
+   Values in this syntax are encoded according to the following BNF:
+
+      teletex-id = ttx-term  0*("$" ttx-param)
+
+      ttx-term   = printablestring
+
+
+
+Wahl                        Standards Track                    [Page 13]
+
+RFC 2256                     LDAPv3 Schema                 December 1997
+
+
+      ttx-param  = ttx-key ":" ttx-value
+
+      ttx-key    = "graphic" / "control" / "misc" / "page" / "private"
+
+      ttx-value  = octetstring
+
+   In the above, the first printablestring is the encoding of the first
+   portion of the teletex terminal identifier to be encoded, and the
+   subsequent 0 or more octetstrings are subsequent portions of the
+   teletex terminal identifier.
+
+6.6. Telex Number
+
+   ( 1.3.6.1.4.1.1466.115.121.1.52 DESC 'Telex Number' )
+
+   Values in this syntax are encoded according to the following BNF:
+
+      telex-number  = actual-number "$" country "$" answerback
+
+      actual-number = printablestring
+
+      country       = printablestring
+
+      answerback    = printablestring
+
+   In the above, actual-number is the syntactic representation of the
+   number portion of the TELEX number being encoded, country is the
+   TELEX country code, and answerback is the answerback code of a TELEX
+   terminal.
+
+6.7. Supported Algorithm
+
+   ( 1.3.6.1.4.1.1466.115.121.1.49 DESC 'Supported Algorithm' )
+
+   No printable representation of values of the supportedAlgorithms
+   attribute is defined in this document.  Clients which wish to store
+   and retrieve this attribute MUST use "supportedAlgorithms;binary", in
+   which the value is transferred as a binary encoding.
+
+7. Object Classes
+
+   LDAP servers MUST recognize the object classes "top" and "subschema".
+   LDAP servers SHOULD recognize all the other object classes listed
+   here as values of the objectClass attribute.
+
+7.1. top
+
+   ( 2.5.6.0 NAME 'top' ABSTRACT MUST objectClass )
+
+
+
+Wahl                        Standards Track                    [Page 14]
+
+RFC 2256                     LDAPv3 Schema                 December 1997
+
+
+7.2. alias
+
+   ( 2.5.6.1 NAME 'alias' SUP top STRUCTURAL MUST aliasedObjectName )
+
+7.3. country
+
+   ( 2.5.6.2 NAME 'country' SUP top STRUCTURAL MUST c
+     MAY ( searchGuide $ description ) )
+
+7.4. locality
+
+   ( 2.5.6.3 NAME 'locality' SUP top STRUCTURAL
+     MAY ( street $ seeAlso $ searchGuide $ st $ l $ description ) )
+
+7.5. organization
+
+   ( 2.5.6.4 NAME 'organization' SUP top STRUCTURAL MUST o
+     MAY ( userPassword $ searchGuide $ seeAlso $ businessCategory $
+     x121Address $ registeredAddress $ destinationIndicator $
+     preferredDeliveryMethod $ telexNumber $ teletexTerminalIdentifier $
+     telephoneNumber $ internationaliSDNNumber $
+     facsimileTelephoneNumber $
+     street $ postOfficeBox $ postalCode $ postalAddress $
+     physicalDeliveryOfficeName $ st $ l $ description ) )
+
+7.6. organizationalUnit
+
+   ( 2.5.6.5 NAME 'organizationalUnit' SUP top STRUCTURAL MUST ou
+     MAY ( userPassword $ searchGuide $ seeAlso $ businessCategory $
+     x121Address $ registeredAddress $ destinationIndicator $
+     preferredDeliveryMethod $ telexNumber $ teletexTerminalIdentifier $
+     telephoneNumber $ internationaliSDNNumber $
+     facsimileTelephoneNumber $
+     street $ postOfficeBox $ postalCode $ postalAddress $
+     physicalDeliveryOfficeName $ st $ l $ description ) )
+
+7.7. person
+
+   ( 2.5.6.6 NAME 'person' SUP top STRUCTURAL MUST ( sn $ cn )
+     MAY ( userPassword $ telephoneNumber $ seeAlso $ description ) )
+
+7.8. organizationalPerson
+
+   ( 2.5.6.7 NAME 'organizationalPerson' SUP person STRUCTURAL
+     MAY ( title $ x121Address $ registeredAddress $
+     destinationIndicator $
+     preferredDeliveryMethod $ telexNumber $ teletexTerminalIdentifier $
+     telephoneNumber $ internationaliSDNNumber $
+
+
+
+Wahl                        Standards Track                    [Page 15]
+
+RFC 2256                     LDAPv3 Schema                 December 1997
+
+
+     facsimileTelephoneNumber $
+     street $ postOfficeBox $ postalCode $ postalAddress $
+     physicalDeliveryOfficeName $ ou $ st $ l ) )
+
+7.9. organizationalRole
+
+   ( 2.5.6.8 NAME 'organizationalRole' SUP top STRUCTURAL MUST cn
+     MAY ( x121Address $ registeredAddress $ destinationIndicator $
+     preferredDeliveryMethod $ telexNumber $ teletexTerminalIdentifier $
+     telephoneNumber $ internationaliSDNNumber $
+     facsimileTelephoneNumber $
+     seeAlso $ roleOccupant $ preferredDeliveryMethod $ street $
+     postOfficeBox $ postalCode $ postalAddress $
+     physicalDeliveryOfficeName $ ou $ st $ l $ description ) )
+
+7.10. groupOfNames
+
+   ( 2.5.6.9 NAME 'groupOfNames' SUP top STRUCTURAL MUST ( member $ cn )
+     MAY ( businessCategory $ seeAlso $ owner $ ou $ o $ description ) )
+
+7.11. residentialPerson
+
+   ( 2.5.6.10 NAME 'residentialPerson' SUP person STRUCTURAL MUST l
+     MAY ( businessCategory $ x121Address $ registeredAddress $
+     destinationIndicator $ preferredDeliveryMethod $ telexNumber $
+     teletexTerminalIdentifier $ telephoneNumber $
+     internationaliSDNNumber $
+     facsimileTelephoneNumber $ preferredDeliveryMethod $ street $
+     postOfficeBox $ postalCode $ postalAddress $
+     physicalDeliveryOfficeName $ st $ l ) )
+
+7.12. applicationProcess
+
+   ( 2.5.6.11 NAME 'applicationProcess' SUP top STRUCTURAL MUST cn
+     MAY ( seeAlso $ ou $ l $ description ) )
+
+7.13. applicationEntity
+
+   ( 2.5.6.12 NAME 'applicationEntity' SUP top STRUCTURAL
+     MUST ( presentationAddress $ cn )
+     MAY ( supportedApplicationContext $ seeAlso $ ou $ o $ l $
+     description ) )
+
+7.14. dSA
+
+   ( 2.5.6.13 NAME 'dSA' SUP applicationEntity STRUCTURAL
+     MAY knowledgeInformation )
+
+
+
+
+Wahl                        Standards Track                    [Page 16]
+
+RFC 2256                     LDAPv3 Schema                 December 1997
+
+
+7.15. device
+
+   ( 2.5.6.14 NAME 'device' SUP top STRUCTURAL MUST cn
+     MAY ( serialNumber $ seeAlso $ owner $ ou $ o $ l $ description ) )
+
+7.16. strongAuthenticationUser
+
+   ( 2.5.6.15 NAME 'strongAuthenticationUser' SUP top AUXILIARY
+     MUST userCertificate )
+
+7.17. certificationAuthority
+
+   ( 2.5.6.16 NAME 'certificationAuthority' SUP top AUXILIARY
+     MUST ( authorityRevocationList $ certificateRevocationList $
+     cACertificate ) MAY crossCertificatePair )
+
+7.18. groupOfUniqueNames
+
+   ( 2.5.6.17 NAME 'groupOfUniqueNames' SUP top STRUCTURAL
+     MUST ( uniqueMember $ cn )
+     MAY ( businessCategory $ seeAlso $ owner $ ou $ o $ description ) )
+
+7.19. userSecurityInformation
+
+   ( 2.5.6.18 NAME 'userSecurityInformation' SUP top AUXILIARY
+     MAY ( supportedAlgorithms ) )
+
+7.20. certificationAuthority-V2
+
+   ( 2.5.6.16.2 NAME 'certificationAuthority-V2' SUP
+     certificationAuthority
+     AUXILIARY MAY ( deltaRevocationList ) )
+
+7.21. cRLDistributionPoint
+
+   ( 2.5.6.19 NAME 'cRLDistributionPoint' SUP top STRUCTURAL
+     MUST ( cn ) MAY ( certificateRevocationList $
+     authorityRevocationList $
+     deltaRevocationList ) )
+
+7.22. dmd
+
+   ( 2.5.6.20 NAME 'dmd' SUP top STRUCTURAL MUST ( dmdName )
+     MAY ( userPassword $ searchGuide $ seeAlso $ businessCategory $
+     x121Address $ registeredAddress $ destinationIndicator $
+     preferredDeliveryMethod $ telexNumber $ teletexTerminalIdentifier $
+     telephoneNumber $ internationaliSDNNumber $
+     facsimileTelephoneNumber $
+
+
+
+Wahl                        Standards Track                    [Page 17]
+
+RFC 2256                     LDAPv3 Schema                 December 1997
+
+
+     street $ postOfficeBox $ postalCode $ postalAddress $
+     physicalDeliveryOfficeName $ st $ l $ description ) )
+
+8. Matching Rules
+
+   Servers MAY implement additional matching rules.
+
+8.1. octetStringMatch
+
+   Servers which implement the extensibleMatch filter SHOULD allow the
+   matching rule listed in this section to be used in the
+   extensibleMatch.  In general these servers SHOULD allow matching
+   rules to be used with all attribute types known to the server, when
+   the assertion syntax of the matching rule is the same as the value
+   syntax of the attribute.
+
+   ( 2.5.13.17 NAME 'octetStringMatch'
+    SYNTAX 1.3.6.1.4.1.1466.115.121.1.40 )
+
+9. Security Considerations
+
+   Attributes of directory entries are used to provide descriptive
+   information about the real-world objects they represent, which can be
+   people, organizations or devices.  Most countries have privacy laws
+   regarding the publication of information about people.
+
+   Transfer of cleartext passwords are strongly discouraged where the
+   underlying transport service cannot guarantee confidentiality and may
+   result in disclosure of the password to unauthorized parties.
+
+10. Acknowledgements
+
+   The definitions on which this document have been developed by
+   committees for telecommunications and international standards.  No
+   new attribute definitions have been added.  The syntax definitions
+   are based on the ISODE "QUIPU" implementation of X.500.
+
+11. Bibliography
+
+   [1] Wahl, M., Coulbeck, A., Howes, T., and S. Kille,
+       "Lightweight X.500 Directory Access Protocol (v3): Attribute
+       Syntax Definitions", RFC 2252, December 1997.
+
+   [2] The Directory: Models. ITU-T Recommendation X.501, 1996.
+
+   [3] The Directory: Authentication Framework. ITU-T Recommendation
+       X.509, 1996.
+
+
+
+
+Wahl                        Standards Track                    [Page 18]
+
+RFC 2256                     LDAPv3 Schema                 December 1997
+
+
+   [4] The Directory: Selected Attribute Types. ITU-T Recommendation
+       X.520, 1996.
+
+   [5] The Directory: Selected Object Classes.  ITU-T Recommendation
+       X.521, 1996.
+
+   [6] Bradner, S., "Key words for use in RFCs to Indicate Requirement
+       Levels", RFC 2119, March 1997.
+
+12. Author's Address
+
+   Mark Wahl
+   Critical Angle Inc.
+   4815 West Braker Lane #502-385
+   Austin, TX 78759
+   USA
+
+   Phone:  +1 512 372 3160
+   EMail:  M.Wahl@critical-angle.com
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
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+
+
+
+
+
+
+
+
+
+
+Wahl                        Standards Track                    [Page 19]
+
+RFC 2256                     LDAPv3 Schema                 December 1997
+
+
+13.  Full Copyright Statement
+
+   Copyright (C) The Internet Society (1997).  All Rights Reserved.
+
+   This document and translations of it may be copied and furnished to
+   others, and derivative works that comment on or otherwise explain it
+   or assist in its implementation may be prepared, copied, published
+   and distributed, in whole or in part, without restriction of any
+   kind, provided that the above copyright notice and this paragraph are
+   included on all such copies and derivative works.  However, this
+   document itself may not be modified in any way, such as by removing
+   the copyright notice or references to the Internet Society or other
+   Internet organizations, except as needed for the purpose of
+   developing Internet standards in which case the procedures for
+   copyrights defined in the Internet Standards process must be
+   followed, or as required to translate it into languages other than
+   English.
+
+   The limited permissions granted above are perpetual and will not be
+   revoked by the Internet Society or its successors or assigns.
+
+   This document and the information contained herein is provided on an
+   "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
+   TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
+   BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
+   HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
+   MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+
+
+
+
+
+
+
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+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+Wahl                        Standards Track                    [Page 20]
+