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authorThomas Voss <mail@thomasvoss.com> 2024-11-27 20:54:24 +0100
committerThomas Voss <mail@thomasvoss.com> 2024-11-27 20:54:24 +0100
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+Network Working Group M. Mealling
+Request for Comments: 3061 Verisign
+Category: Informational February 2001
+Obsoletes: 3001
+
+
+ A URN Namespace of Object Identifiers
+
+Status of this Memo
+
+ This memo provides information for the Internet community. It does
+ not specify an Internet standard of any kind. Distribution of this
+ memo is unlimited.
+
+Copyright Notice
+
+ Copyright (C) The Internet Society (2001). All Rights Reserved.
+
+Abstract
+
+ This document describes a Uniform Resource Name (URN) namespace that
+ contains Object Identifiers (OIDs). It obsoletes RFC 3001.
+
+1. Introduction
+
+ An Object Identifier is a tree of nodes where each node is simply a
+ sequence of digits. The rules roughly state that once an entity is
+ assigned a node in the Object Identifier (OID) tree, it has sole
+ discretion to further subdelegate sub-trees off of that node. Some
+ examples of OIDs include:
+
+ o 1.3.6.1 - the Internet OID
+ o 1.3.6.1.4.1 - IANA-assigned company OIDs, used for private MIBs
+ and such things
+ o 1.3.6.1.2.1.27 - The Applications MIB
+ o 0.9.2342.19200300.100.4 - Object ID's used in the directory pilot
+ project to identify X.500 Object Classes. Mostly defined in RFC
+ 1274.
+
+ This document specifies the "oid" URN namespace [2]. This namespace
+ is for encoding an Object Identifier as specified in ASN.1 [3] as a
+ URI. RFC 3001 [1] is obsoleted by this specification.
+
+ The namespace specification is for a formal namespace.
+
+
+
+
+
+
+
+Mealling Informational [Page 1]
+
+RFC 3061 OID URN Namespace February 2001
+
+
+2. Specification Template
+
+ Namespace ID:
+
+ "oid" requested.
+
+ Registration Information:
+
+ Registration Version Number: 1
+ Registration Date: 2000-04-30
+
+ Declared registrant of the namespace:
+
+ The ISO/IEC Joint Technical Committee 1 - SubCommittee 6
+
+ The real authority is the ASN.1 specification itself but SC6 is
+ the committee that has the authority to interpret what that
+ means, thus that committee is listed as the registrant.
+
+ Declaration of structure:
+
+ The NSS portion of the identifier is based on the string encoding
+ rules found in RFC 1778 Section 2.15 [4] which specifies a series
+ of digits separated by a period with the most significant digit
+ being at the left and the least significant being at the right.
+ At no time shall the NSS portion of the URN contain the human
+ readable description of a particular node in the OID tree. The
+ NSS portion of the name is strictly limited to the digits 0-9 and
+ the '.' character with no leading zeros. No other characters are
+ permitted. This is all expressed in the following ABNF:
+
+ oid = number *( DOT number )
+ number = DIGIT / ( LEADDIGIT 1*DIGIT )
+ LEADDIGIT = %x31-39 ; 1-9
+ DIGIT = %x30 / LEADDIGIT ; 0-9
+ DOT = %x2E ; period
+
+ No changes are anticipated since Object Identifiers are fairly
+ simple and have been standardized with no changes for many years.
+
+ Relevant ancillary documentation:
+
+ Relevant documentation can be found in X.660/Amd 2 | ISO/IEC
+ 9834-1/Amd 2[3].
+
+
+
+
+
+
+
+Mealling Informational [Page 2]
+
+RFC 3061 OID URN Namespace February 2001
+
+
+ Identifier uniqueness considerations:
+
+ The rules for assignment of OIDs requires that each OID be unique
+ to the OID space and that it cannot be reassigned or reused. By
+ reference this URN namespace inherents those rules.
+
+ Identifier persistence considerations:
+
+ The rules concerning the use of OIDs requires that they not be
+ reused once assigned. By reference this URN namespace inherents
+ those rules.
+
+ Process of identifier assignment:
+
+ Once an OID is assigned to some entity, that entity can then
+ create and assign new OIDs below that particular OID. There are
+ multiple entities that assign new OIDs to the general public. The
+ top three levels are pre-assigned as follows:
+
+ 0 - ITU-T assigned
+ 1 - ISO assigned
+ 2 - Joint ISO/ITU-T assignment
+
+ several assigned OIDs that are of importance to the Internet are:
+
+ 1.3.6.1 - the Internet OID
+ 1.3.6.1.4.1 - IANA-assigned company OIDs, used for private
+ MIBs and such things
+
+ Process of identifier resolution:
+
+ At this time no resolution mechanism is defined.
+
+ Rules for Lexical Equivalence:
+
+ OIDs are composed of multiple occurrences of digits and the "."
+ character. Lexical equivalence is achieved by exact string match.
+
+ Conformance with URN Syntax:
+
+ There are no additional characters reserved.
+
+ Validation mechanism:
+
+ None.
+
+
+
+
+
+
+Mealling Informational [Page 3]
+
+RFC 3061 OID URN Namespace February 2001
+
+
+ Scope:
+
+ Global
+
+3. Examples
+
+ The following examples are taken from the example OIDs from the
+ Introduction:
+
+ urn:oid:1.3.6.1
+ urn:oid:1.3.6.1.4.1
+ urn:oid:1.3.6.1.2.1.27
+ URN:OID:0.9.2342.19200300.100.4
+
+4. Security Considerations
+
+ None not already inherent to using unverifiable OIDs.
+
+5. Acknowledgements
+
+ The author would like to thank Harald Alvestrand for the use of his
+ OID database as a source for examples and references.
+
+References
+
+ [1] Mealling, M., "A URN Namespace of Object Identifiers", RFC 3001,
+ November 2000.
+
+ [2] Moats, R., "URN Syntax", RFC 2141, May 1997.
+
+ [3] CCITT, "Specification of Basic Encoding Rules for Abstract
+ Syntax Notation One (ASN.1)", CCITT Recommendation X.209,
+ January 1988.
+
+ [4] Howes, T., Kille, S., Yeong, W. and C. Robbins, "The String
+ Representation of Standard Attribute Syntaxes", RFC 1778, March
+ 1995.
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+Mealling Informational [Page 4]
+
+RFC 3061 OID URN Namespace February 2001
+
+
+Author's Address
+
+ Michael Mealling
+ Verisign
+ 505 Huntmar Park Drive
+ Herndon, VA 22070
+ US
+
+ Phone: +1 770 935 5492
+ EMail: michaelm@netsol.com
+ URI: http://www.netsol.com
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+Mealling Informational [Page 5]
+
+RFC 3061 OID URN Namespace February 2001
+
+
+Full Copyright Statement
+
+ Copyright (C) The Internet Society (2001). 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.
+
+Acknowledgement
+
+ Funding for the RFC Editor function is currently provided by the
+ Internet Society.
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+Mealling Informational [Page 6]
+