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.pl 10.0i.po 0.ll 7.2i.lt 7.2i.nr LL 7.2i.nr LT 7.2i.ds LF Marschall.ds RF FORMFEED[Page %].ds LH INTERNET DRAFT.ds RH March 15, 2022.ds CH OID Information Protocol.ds CF Expires September 16, 2022.hy 0.nh.ad l.in 0.nf.tl 'INTERNET-DRAFT''D. Marschall'.tl 'Intended Status: Informational''ViaThinkSoft'.tl 'Expires: September 16, 2022''March 15, 2022'.fi.\" Note. The ".tl" directive is used to generate the leading header.\" in Internet drafts. The information specified after ".tl" provides.\" left, center and right components of a line separated by the ' character.\" in the following manner:.\".\" .tl '<left component>'<center component>'<right component>'.\".\" Only the left and right components are used in Internet-draft headers.\" This and other comments in this template can safely be deleted..ce 3Retrieving information about Object Identifiersusing a text-based protocoldraft-viathinksoft-oidip-02.fi.in 3.ti 0AbstractThis document defines a method for retrieving information about Object Identifiers (OIDs) and their associated Registration Authorities (RAs) using a text-based protocol, in a way that is both human-readable and machine-readable..ti 0Status of This MemoThis Internet-Draft is submitted in full conformance with theprovisions of BCP\078 and BCP\079.Internet-Drafts are working documents of the Internet EngineeringTask Force (IETF). Note that other groups may also distributeworking documents as Internet-Drafts. The list of current Internet-Drafts is at https://datatracker.ietf.org/drafts/current/.Internet-Drafts are draft documents valid for a maximum of six monthsand may be updated, replaced, or obsoleted by other documents at anytime. It is inappropriate to use Internet-Drafts as referencematerial or to cite them other than as "work in progress."This Internet-Draft will expire on September 16, 2022..ti 0Copyright NoticeCopyright (c) 2022 IETF Trust and the persons identified as thedocument authors. All rights reserved.This document is subject to BCP\078 and the IETF Trust's LegalProvisions Relating to IETF Documents(https://trustee.ietf.org/license-info) in effect on the date ofpublication of this document. Please review these documentscarefully, as they describe your rights and restrictions with respectto this document. Code Components extracted from this document mustinclude Simplified BSD License text as described in Section 4.e ofthe Trust Legal Provisions and are provided without warranty asdescribed in the Simplified BSD License..\" \# TD4 -- Set TOC depth by altering this value (TD5 = depth 5).\" \# TOC -- Beginning of auto updated Table of Contents.in 0Table of Contents.nf1 Introduction . . . . . . . . . . . . . . . . . . . . . . . . . 31.1 Terminology . . . . . . . . . . . . . . . . . . . . . . . . 42 Request . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42.1 Authentication Tokens . . . . . . . . . . . . . . . . . . . 52.2 Server Commands . . . . . . . . . . . . . . . . . . . . . . 52.2.1 "Format" command . . . . . . . . . . . . . . . . . . . 52.3 Request ABNF Notation . . . . . . . . . . . . . . . . . . . 63 Response . . . . . . . . . . . . . . . . . . . . . . . . . . . 73.1 Format and Encoding . . . . . . . . . . . . . . . . . . . . 73.2 Structure . . . . . . . . . . . . . . . . . . . . . . . . . 73.2.1 Query-Section (Information about Query and Result) . . 83.2.2 Object-Section (Information about the OID) . . . . . . 93.2.3 RA-Section (Information about the Current RA) . . . . . 133.2.4 Sections for Previous Registration Authorities . . . . 143.3 Digital Signature . . . . . . . . . . . . . . . . . . . . . 153.4 Date/Time Format . . . . . . . . . . . . . . . . . . . . . 153.4.1 Date/Time Format ABNF Notation . . . . . . . . . . . . 163.4.2 Date/Time Format Examples . . . . . . . . . . . . . . . 164 Referral . . . . . . . . . . . . . . . . . . . . . . . . . . . 175 Full Example . . . . . . . . . . . . . . . . . . . . . . . . . 185.1 Request . . . . . . . . . . . . . . . . . . . . . . . . . . 185.2 Response . . . . . . . . . . . . . . . . . . . . . . . . . 186 Alternative Namespaces . . . . . . . . . . . . . . . . . . . . 196.1 Example: UUID Namespace . . . . . . . . . . . . . . . . . . 207 Internationalization Considerations . . . . . . . . . . . . . . 208 Security Considerations . . . . . . . . . . . . . . . . . . . . 219 IANA Considerations . . . . . . . . . . . . . . . . . . . . . . 229.1 Port Numbers . . . . . . . . . . . . . . . . . . . . . . . 2210 References . . . . . . . . . . . . . . . . . . . . . . . . . . 2210.1 Normative References . . . . . . . . . . . . . . . . . . . 2210.2 Informative References . . . . . . . . . . . . . . . . . . 23Appendix A.1: JSON Schema . . . . . . . . . . . . . . . . . . . . 25Appendix A.2: Example of output . . . . . . . . . . . . . . . . . 31Appendix B.1: XML Schema . . . . . . . . . . . . . . . . . . . . . 33Appendix B.2: Example of output . . . . . . . . . . . . . . . . . 36Acknowledgements . . . . . . . . . . . . . . . . . . . . . . . . . 37Authors' Addresses . . . . . . . . . . . . . . . . . . . . . . . . 37.fi.in 3.\" \# ETC -- End of auto updated Table of Contents.bp.ti 01 IntroductionAn Object Identifier (OID) is an extensively used identification mechanism jointly developed by ITU-T and ISO/IEC for naming any type of object with a globally unambiguous name. OIDs provide a persistent identification of objects based on a hierarchical structure of Registration Authorities (RA), where each parent has an Object Identifier and allocates Object Identifiers to child nodes. More information about Object Identifiers can be found in Recommendation ITU-T X.660 (2011) | ISO/IEC 9834-1:2012 [X660].There are a few methods of retrieving information about an OID, like:(A) Searching through web repositories like <http://www.oid-info.com> or <http://www.alvestrand.no/objectid/>. This has the disadvantage that the information is usually not machine-readable without functionalities like an API.(B) Retrieving information using the Object Identifier Resolution System (ORS) as defined in Recommendation ITU-T X.672 (2010) | ISO/IEC 29168-1:2011 [X672]. This has the disadvantage that Registration Authorities need to include specific DNS Resource Records to their domains, and additionally, all RAs of the superior OIDs must implement the ORS.This document describes an additional method for retrieving information about OIDs, which is both human-readable and machine-readable.Three of many possible use-case scenarios are:(1) Many web-browsers and Operating Systems can handle ITU-T X.509 certificates [X509] and usually contain a viewer application that shows the contents of these certificates. Attributes that are unknown by the application are either only displayed by their OID, or hidden to avoid confusion to the user. With OID-IP, the application could query the name of these unknown OIDs or even retrieve instructions on how the data described by this OID can be parsed and displayed.(2) Applications that handle SNMP (Simple Network Management Protocol) [RFC1157] might need information about additional MIB files or their OIDs. OID-IP could aid these applications in gathering the required information.(3) In directory services like LDAP (Lightweight Directory Access Protocol) [RFC4511], applications could query the name of attributes that are described by an OID the application doesn't know..ti 01.1 TerminologyThe 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\02119 [RFC2119].In this document, "RA" is an abbreviation for "Registration Authority", "OID" is an abbreviation for "Object Identifier" and "OID-IP" is an abbreviation for "Object Identifier Information Protocol"..ti 02 RequestOID-IP is a text-based protocol.An OID-IP server listens on TCP port XXX for requests from OID-IP clients. The OID-IP client makes a text request to the OID-IP server, then the OID-IP server replies with text content. All requests are terminated with ASCII CR followed by ASCII LF. The response contains multiple lines of text, separated by ASCII CR followed by ASCII LF. The OID-IP server closes its connection as soon as the output is finished. The closed TCP connection is the indication to the client that the response has been received.Alternatively to TCP port XXX, an OID-IP server can listen to the WHOIS TCP port 43. Existing WHOIS servers can add the functionalities described in this document in addition to their usual operation, i.e. they may accept queries beginning with "oid:" as well as other types of queries.During the request, the client sends a query beginning with "oid:", followed by an OID in dot-notation, as defined in RFC\03061, section 2 [RFC3061], but with the following differences:(1) The OID MAY contain a leading dot.(2) To query the root of the OID tree, the OID MUST be either missing or consisting only of a single dot.Examples of valid queries are:.in 7.nfoid:oid:.oid:2.999oid:.2.999.fi.in 3All OIDs MUST be interpreted as absolute OIDs. Relative OIDs (e.g. relative to the OID of the Registration Authority operating the OID-IP service) are not allowed.The namespace identifier (i.e. "oid") MUST be written in lower-case..ti 02.1 Authentication TokensSome organizations might not want to present their OID information (or part of it) to the public, e.g. for reasons like privacy or confidentiality. Therefore, at the end of the query, the client can append case-sensitive, non-empty alphanumeric authentication tokens to control the display of confidential information..\" REMOVED BECAUSE PAGE WOULD BE TOO LONG: "... to control the display of confidential information [returned by the OID-IP service]."Each authentication token MUST be prepended by a dollar sign ("$").Examples of valid queries are:.in 7.nfoid:2.999$firstTokenoid:2.999$firstToken$secondToken.fi.in 3Please note that authentication tokens are only weak protection. For more information, see section 8 "Security Considerations"..ti 02.2 Server CommandsThe client can send additional information to the server using "server commands". These are similar toAuthentication Tokens, with the difference that they contain an equal sign ("=") which divides the "name"from the "value". Names and values are case-sensitive alphanumeric strings. A request cancontain multiple server commands which are each prepended by a dollar sign ("$"). The usage ofserver commands is individual for each server and implementation.The following request is an example of a valid query where the client sends a "format" commandwith the value "text" and an "antispam" command with the value "1":.in 7.nfoid:2.999$format=text$antispam=1.fi.in 3.ti 02.2.1 "Format" commandThe "format" command defines the desired output format of the server response.Currently, there are four valid formats:(1) "text": Text representation as described in section 3 in this document. (MANDATORY)(2) "json": The JavaScript Object Notation (JSON, [RFC8259]) representation as defined in Appendix A in this document. (OPTIONAL)(3) "xml": Extensible Markup Language (XML, [XML]) representation as defined in Appendix B in this document. (OPTIONAL)(4) "html": Hypertext Markup Language (HTML) representation, not necessarily machine-readable. (OPTIONAL)The default format is "text", which is assumed if the "format" command is omitted..ti 02.3 Request ABNF NotationTo define the query string, the following Augmented BNF definitions will be used. They are based on the ABNF styles of RFC 5234 [RFC5234]..nfquery = namespace ":" optional-oid *( "$" authtoken )*( "$" cmdname "=" cmdval )namespace = %x6F %x69 %x64 ; "oid"optional-oid = [ "." ] [ oid ]oid = unsigned-number *( "." unsigned-number )authtoken = 1*( char-or-digit )cmdname = 1*( char-or-digit )cmdval = 1*( char-or-digit )digit = %x30-39 ; 0-9nonzero-digit = %x31-39 ; 1-9uppercase-char = %x41-5A ; A-Zlowercase-char = %x61-7A ; a-zchar-or-digit = uppercase-char / lowercase-char / digitunsigned-number = "0" / nonzero-digit *( digit ).fi.bp.ti 03 Response.ti 03.1 Format and Encoding(1) The response MUST be UTF-8 encoded (as defined in RFC\03629 [RFC3629]), without Byte-Order-Mark (BOM).(2) The response contains multiple lines with field names and values, which MUST be separated by a double colon (":"). Whitespace characters after the double colon are allowed.(3) If possible, each line SHOULD be limited to 80 characters, including the field name, double colon, value, and whitespaces.(4) Field names and values MUST be treated case-sensitive.(5) If a value needs to be split into multiple lines, e.g. if the line would exceed the length limit, the same field name including double colon MUST be repeated at the beginning of the next line.(6) If an attribute has multiple values (e.g. multiple Unicode labels, alternative email addresses, etc.), each value MUST be written in a new line with the same field name.(7) Lines with the same field name SHALL be kept together.(8) Comment lines MUST start with a percent sign ("%") at the beginning of a line, without prepending whitespaces. They MUST NOT be evaluated by machines (except for signature validation, as mentioned in section\03.3 "Digital Signature")..ti 03.2 StructureA response consists of sections, which SHOULD be separated by at least one empty line and/or comment line.This document specifies the following sections (which SHALL stay in this order):(1) Query-Section which contains the request and the result. This section MUST start with the field "query".(2) Object-Section which contains information about the OID. This section MUST start with the field "object".(3) RA-Section which contains information about the current Registration Authority. This section MUST start with the field "ra".(4) Optional RA-Sections containing information about RAs that were previously in charge of managing the OID.The OID-IP service MAY define additional sections after any of these sections, but the Query-Section MUST be the first section in the response..ti 03.2.1 Query-Section (Information about Query and Result)This section MUST always be present and MUST start with the field "query". It MUST be the first section in the response.Possible fields are:(1) "query" MUST be present and contain the request of the client (beginning with the namespace identifier and double colon, i.e. "oid:"). Canonization or sanitation (like removing a leading dot) SHOULD NOT be applied at this step. Authentication tokens SHOULD be omitted, though.(2) "result" MUST be present and SHALL be one of the following values:.in 7"Found" means that the OID-IP service can verify that the requested OID exists. The following sections will contain information about this OID."Not found; superior object found" means that the OID-IP service cannot verify that the requested OID exists, or it denies that the OID exists (e.g. because it is confidential). However, the OID-IP service knows a superior OID which does exist. The following sections will contain information about that superior OID instead."Not found" means that the OID-IP service cannot verify that the requested OID exists, or it denies that the OID exists (e.g. because it is confidential). Additionally, the OID-IP service does not have information about any superior OID, or their existence is also denied."Service error" means that an internal error occurred, or that the system is in maintenance mode. The client should try again later..in 3(3) "distance" SHOULD be present if it is applicable in the requested namespace (it is always applicable for OIDs) and if the result is "Not found; superior object found". A distance of 1 means that the direct parent was found. A distance of 2 means that the grand-parent was found, etc.(4) "message" SHOULD be present if the result is "Service error". It contains a message explaining why the service is not available (e.g. displaying an error message). It MUST NOT be present if the result has a different value.The OID-IP service SHOULD NOT add additional fields to this section..ti 03.2.2 Object-Section (Information about the OID)This section MUST be present if the result is "Found" or "Not found; superior object found". It MUST start with the field "object". It MUST NOT be present if the result is "Not found" or "Service error".Possible fields are:(1) "object" contains the OID in dot-notation, prepended by the namespace identifier and double colon ("oid:"). This field MUST be present.(2) "status" MUST be present and SHALL be one of the following values:.in 7"Information available" means that information about the OID is fully available."Information partially available" means that part of the information about the OID is not available. Possible reasons could be that part of the information is redacted due to confidentiality, or the OID-IP service only knows basic information, while the full information can be found somewhere else (e.g. at a referred OID-IP service). The field "attribute" MAY be used with the value "confidential"."Information unavailable" means that the information about the OID is missing, redacted due to confidentiality, or otherwise unavailable. The field "attribute" MAY be used with the value "confidential"..in 3(3) "name" (OPTIONAL) contains the name of the OID. It SHOULD be as short as possible.(4) "description" (OPTIONAL) contains a short description of the OID. The description SHOULD only be a single sentence.(5) "information" (OPTIONAL) contains additional information, e.g. Management Information Base (MIB) definitions.(6) "url" (OPTIONAL, multiple values allowed) contains a URL (as defined in RFC\03986 [RFC3986]) leading to more information about the OID.(7) "asn1-notation" (OPTIONAL, multiple values allowed) contains one or more possible notations in the ASN.1 syntax, as defined in Recommendation ITU-T X.680 (2015) | ISO/IEC 8824-1:2015, clause 32.3 [X680], e.g. {joint-iso-itu-t(2) example(999)}..in 7Note: A line-break, to break up lines that are too long, as defined in section\03.1 ("Format and Encoding") SHOULD be used. This is no problem because multiple ASN.1 notations can be distinguished by their opening curly bracket and their closing curly bracket..in 3(8) "iri-notation" (OPTIONAL, multiple values allowed) contains one or more possible notations in the OID-IRI syntax, as defined in Recommendation ITU-T X.680 (2015) | ISO/IEC 8824-1:2015, clause 34.3 [X680] (but without quotation marks), e.g. /Joint-ISO-ITU-T/Example..in 7Note: A line-break, to break up lines which are too long, as defined in section\03.1 ("Format and Encoding") SHALL NOT be used, otherwise, it would be ambiguous if the line-break was used to shorten the line, or if the line-break indicates a new value in case multiple OID-IRI notations are supplied..in 3(9) "identifier" (OPTIONAL, multiple values allowed) contains an alphanumeric identifier ("NameForm") as defined in Recommendation ITU-T X.680 (2015) | ISO/IEC 8824-1:2015, clause 12.3 [X680].(10) "standardized-id" (OPTIONAL, multiple values allowed) contains an alphanumeric identifier that has a standardized "NameForm", i.e. in ASN.1 notation, it can be written without its associated number. See more information in Recommendation ITU-T X.680 (2015) | ISO/IEC 8824-1:2015, clause 32.7 [X680].(11) "unicode-label" (OPTIONAL, multiple values allowed) contains a Non-integer Unicode label, as defined in Recommendation ITU-T X.680 (2015) | ISO/IEC 8824-1:2015, clause 12.27 [X680].(12) "long-arc" (OPTIONAL, multiple values allowed) contains a Non-integer Unicode label that can be used as the first identifier in an OID Internationalized Resource Identifier (OID-IRI), shortening it. More information can be found in Recommendation ITU-T X.660 (2011) | ISO/IEC 9834-1:2012, clause 3.5.8 [X660].(13) "oidip-service" (OPTIONAL) contains an IP address or hostname of a system that offers an OID-IP service that can supply information about the OID and/or its subordinate OIDs, followed by a double-colon (:) and a port number. If the result is "Found" (i.e. the OID is existing in the local database), then the information "oidip-service" is only informational; its existence is most likely a hint that subordinate OIDs will be found at that OID-IP server. If the result is "Not found; superior object found", then the client SHOULD query the referred OID-IP server to receive more information about the OID. See more information in section\04 "Referral".(14) "attribute" (OPTIONAL, multiple values allowed) contains attributes of the OID. An attribute MUST be one of the following values:.in 7"confidential" means that information about the OID or part of it is confidential."draft" means that the allocation of the OID is not yet official and the information is subject to change without notice. This includes deletion and relocation."frozen" means that no more child OIDs can be created under this OID, e.g. because the RA has stopped operating, but the existing child OIDs stay valid."leaf" means that no child OIDs can be allocated under this OID. The field "subordinate" SHALL therefore not be present."no-identifiers" means that the RA is not allocating alphanumeric identifiers."no-unicode-labels" means that the RA is not allocating Non-integer Unicode labels."retired" means that the OID is withdrawn, revoked, retired, expired, etc. Please consult Recommendation ITU-T X.660 (2011) | ISO/IEC 9834-1:2012 [X660] for more information about such cases..in 3(15) "parent" (OPTIONAL) contains the OID of the nearest known parent OID, prepended by namespace identifier and double colon, i.e. "oid:". It MAY be followed by additional human-readable information, e.g. a description or a list of ASN.1 identifiers. There SHALL be at least 1 whitespace in between.(16) "subordinate" (OPTIONAL, multiple values allowed) contains a list of subordinate OIDs, prepended by namespace identifier and double colon, i.e. "oid:". It MAY be followed by additional human-readable information, e.g. a description or a list of ASN.1 identifiers. There SHALL be at least 1 whitespace in between.(17) "created" (OPTIONAL) contains the date and time (as specified in section\03.4 "Date/Time Format") when the OID was first allocated by the RA of the superior OID.(18) "updated" (OPTIONAL) contains the date and time (as specified in section\03.4 "Date/Time Format") when the OID information was last updated.Additional fields can be defined by the OID-IP service. The field names SHALL only consist of the lower-case letters "a..z", hyphens ("-"), and numbers, and SHOULD be written in the English language. The field name MUST NOT begin or end with a hyphen and a hyphen MUST NOT be followed by another hyphen..bp.ti 03.2.3 RA-Section (Information about the Current RA)This section MUST NOT be present if the result is "Not found" or "Service error", otherwise it MAY be present. If it is present, it MUST start with the field "ra".Possible fields are:(1) "ra" contains a general name of the RA, like the name of a person, the name of a group, or the name of an organization. This field MUST be present.(2) "ra-status" MUST be present and SHALL be one of the following values:.in 7"Information available" means that information about this RA is fully available."Information partially available" means that part of the information is not available. A possible reason could be that part of the information is redacted due to confidentiality. The field "attribute" MAY be used with the value "confidential"."Information unavailable" means that the data is missing (if the OID-IP service only knows the name of the RA and nothing else), redacted due to confidentiality, or otherwise unavailable. The field "attribute" MAY be used with the value "confidential"..in 3(3) "ra-contact-name" (OPTIONAL, multiple values allowed) contains the name of a person responsible for the allocation of subordinate OIDs, in case "ra" is a group or organization.(4) "ra-address" (OPTIONAL) contains the physical location of the RA. While a fully qualified postal address is recommended, the field can also just contain a rough location like city and country name, state and country name, or just the country name, etc. The name of the country SHOULD always be present.(5) "ra-phone" (OPTIONAL, multiple values allowed) contains a landline phone number of the Registration Authority. It SHOULD be written in the international number format specified in Recommendation ITU-T E.164 (2010) [E164], e.g. +1 206 555 0100.(6) "ra-mobile" (OPTIONAL, multiple values allowed) contains a mobile phone number of the Registration Authority. It SHOULD be written in the international number format specified in Recommendation ITU-T E.164 (2010) [E164], e.g. +1 206 555 0100.(7) "ra-fax" (OPTIONAL, multiple values allowed) contains a fax number of the Registration Authority. It SHOULD be written in the international number format specified in Recommendation ITU-T E.164 (2010) [E164], e.g. +1 206 555 0100.(8) "ra-email" (OPTIONAL, multiple values allowed) contains an email address of the Registration Authority.(9) "ra-url" (OPTIONAL, multiple values allowed) contains a URL (as defined in RFC 3986 [RFC3986]) leading to more information about the RA (usually the website of the RA).(10) "ra-attribute" (OPTIONAL, multiple values allowed) contains attributes of the RA. An attribute MUST be one of the following values:.in 7"confidential" means that the information about the RA or part of it is confidential."retired" means that the RA is defunct. If this attribute is set to the current RA, then the OID MUST have the attribute "frozen" (until the responsibility is transferred to a non-defunct RA, or until the current RA becomes active again)..in 3(11) "ra-created" (OPTIONAL) contains the date and time (as specified in section\03.4 "Date/Time Format") when the RA was created/registered in the database.(12) "ra-updated" (OPTIONAL) contains the date and time (as specified in section\03.4 "Date/Time Format") when the RA information was last modified.Additional fields can be defined by the OID-IP service, but they MUST begin with "ra-". The field names SHALL only consist of the lower-case letters "a..z", hyphens ("-"), and numbers, and SHOULD be written in the English language. The field name MUST NOT begin or end with a hyphen and a hyphen MUST NOT be followed by another hyphen..ti 03.2.4 Sections for Previous Registration AuthoritiesTo optionally display information about RAs that were previously in charge of managing the OID, a new section per RA can be added with the following field name prefixes:"ra-" is the prefix of the current Registration Authority."ra1-" is the prefix of the first RA. It is the very first person or company to whom the OID was allocated by the RA of the superior OID."ra2-" is the prefix of the second RA, after the responsibility has been transferred.etc.The definition of these sections is identical to the definition of the RA-Section (described in section\03.2.3 "RA-Section"), just with a different prefix.The history does not need to be complete, e.g. it is no problem to only serve information about the first and the current RA, or only serve information about the current RA..ti 03.3 Digital SignatureIf integrity/authenticity is required, the whole response can be signed, e.g. by using S/MIME, RSA, or PGP. This document does not describe a mechanism for detecting which signature method was used. The creation and verification of the signature are therefore implementation-specific and no interoperability regarding signature creation and validation is given at this time.Depending on the signature method being used, various things need to be appended and/or prepended to the response. These additional lines MUST be prepended by a percent sign ("%") to avoid that an application confuses these additional lines (e.g. lines belonging to a PGP header, as defined in RFC\04880 [RFC4880]) with parts of the actual OID-IP response..ti 03.4 Date/Time FormatDate/Time references SHALL be formatted as described in section\03.4.1.If parts of the date/time reference are uncertain, then they SHOULD be omitted until the date/time reference has the highest correctness.Examples of valid date/time references can be found in section\03.4.2..bp.ti 03.4.1 Date/Time Format ABNF NotationTo define the format of a Date/Time reference, the following Augmented BNF definitions will be used. They are based on the ABNF styles of RFC 5234 [RFC5234]..nfdate-time = year [ "-" month [ "-" day [ " " time ] ] ]year = 4*4DIGITmonth = ( "0" %x31-39 ) /( "1" %x30-32 ) ; 01-12day = ( "0" %x31-39 ) /( "1" %x30-39 ) /( "2" %x30-39 ) /( "3" %x30-31 ) / ; 01-31time = hour ":" minute [ ":" second ] [ " " timezone ]hour = ( "0" %x30-39 ) /( "1" %x30-39 ) /( "2" %x30-33 ) ; 00-23minute = %x30-35 DIGIT ; 00-59second = %x30-35 DIGIT ; 00-59timezone = ( "+" / "-" ) hour minute.fi.ti 03.4.2 Date/Time Format ExamplesExamples of valid date/time references are:.in 7.nf2021-04-29 18:32:00 +02002021-04-29 18:32:002021-04-29 18:32 +02002021-04-29 18:322021-04-292021-042021.fi.in 3.bp.ti 04 ReferralBy using the field "oidip-service", the OID-IP service can instruct the client to query another OID-IP service that might have more information about the requested OID.If Registration Authorities maintain up-to-date OID-IP service references of their OID delegations, it is possible to automatically retrieve information about any OID.Example: OID "2.999" is owned by Registration Authority "A", operating an OID-IP service at "a.example.com".Registration Authority "A" allocated OID "2.999.1000" to Registration Authority "B" who is operating an OID-IP service at "b.example.com".The client asks a.example.com for information about OID "2.999.1000.1" and should receive the following reply:.in 7.nfquery: oid:2.999.1000.1result: Not found; superior object founddistance: 1object: oid:2.999.1000status: Information availablename: Company "B"oidip-service: b.example.com:XXXra: "B"ra-status: Information unavailable.fi.in 3The client is now aware that "a.example.com" only knows OID "2.999.1000", and that there is a reference to another OID-IP service located at "b.example.com". So, the client should then accordingly query "b.example.com", asking for information about OID "2.999.1000.1":.in 7.nfquery: oid:2.999.1000.1result: Foundobject: oid:2.999.1000.1status: Information availablename: Example OID 1ra: "B"ra-status: Information unavailable.fi.in 3.bp.ti 05 Full Example.ti 05.1 Request.nfoid:2.999.fi.ti 05.2 Response.nfquery: oid:2.999result: Foundobject: oid:2.999status: Information availablename: Exampledescription: This OID can be used by anyone, for the purposes ofdescription: documenting examples of Object Identifiers.asn1-notation: {joint-iso-itu-t(2) example(999)}iri-notation: /Exampleidentifier: exampleunicode-label: Beispielunicode-label: Ejemplounicode-label: Exampleunicode-label: Exempleunicode-label: (Korean characters are omitted in this example)unicode-label: (Arabian characters are omitted in this example)unicode-label: (Japanese characters are omitted in this example)unicode-label: (Chinese characters are omitted in this example)unicode-label: (Russian characters are omitted in this example)long-arc: Beispiellong-arc: Ejemplolong-arc: Examplelong-arc: Exemplelong-arc: (Korean characters are omitted in this example)long-arc: (Arabian characters are omitted in this example)long-arc: (Japanese characters are omitted in this example)long-arc: (Chinese characters are omitted in this example)long-arc: (Russian characters are omitted in this example)parent: oid:2 (joint-iso-itu-t)created: 2011-06updated: 2011-09ra: ITU-T SG 17 & ISO/IEC JTC 1/SC 6ra-status: Information unavailable% -----BEGIN RSA SIGNATURE-----% DwnqRtx/ONtPh4onXnrZPl9jF+G50RMLZkSwuClaoH2t/yK8CnYJrmzkzA5+gkfWkoQ% cq+J8J9cvnwXvBfpVHh+7lyNOVW1N016TYFcBt8MVxb6K2KhkKclqeA6wz0kSUuE4qR% ZohzrZBcCP7aLIpcaoVi6QACAt6J0vOvYBaf0=% -----END RSA SIGNATURE-----.fi.bp.ti 06 Alternative NamespacesThis document describes the retrieval of information about OIDs using the OID-IP protocol. In addition to the OID namespace, the methods described in this document can also be applied to other namespaces like "uuid", "isbn", "gtin" etc.Following things need to be considered if alternative namespaces are implemented:(1) The request MUST be UTF-8 encoded (as defined in RFC\03629 [RFC3629]), without Byte-Order-Mark (BOM).(2) The namespace SHALL be a namespace identifier (NID) as defined in RFC\08141 [RFC8141].(3) The namespace identifier SHALL be written in lower-case (this is already defined in section\02 "Request").(4) If available, a formal URN namespace identifier (as defined in RFC\08141, section 5.1 [RFC8141]) SHOULD be used, e.g. "uuid" should be used instead of "guid".(5) If things like "Owner", "Creator", "Manager", "Administrator", etc., are relevant to the identifiers in the namespace, then the RA-section as described in section\03.2.3 SHALL be used, even though the word "Registration Authority" might not be appropriate in the terminology of the namespace.(6) The namespace-specific identifier MUST NOT contain dollar signs ("$"), because section 2.1 "Authentication Tokens" defines them as a separator for authentication tokens.(7) The namespace-specific identifier MUST be treated case-sensitive if the namespace distinguishes between lower-case and upper-case.(8) Fields that can only be used in the OID namespace (e.g. "unicode-label") MUST NOT be used for other namespaces..bp.ti 06.1 Example: UUID Namespace.in 3The following example shows the retrieval of information about Universally Unique Identifiers (e.g. UUIDs used by the Microsoft Common Object Model, also known as GUIDs). The UUID namespace has no hierarchical structure, which means that the OID-IP service can only respond with the result "Found", "Not found" or "Service error" and the fields "parent" and "subordinate" cannot be used.Request:.in 7.nfuuid:b4bfcc3a-db2c-424c-b029-7fe99a87c641.fi.in 3Response:.in 7.nfquery: uuid:b4bfcc3a-db2c-424c-b029-7fe99a87c641result: Foundobject: uuid:b4bfcc3a-db2c-424c-b029-7fe99a87c641status: Information availablename: Desktopinformation: GUID can be used in file dialogs as "Custom Place".ra: Microsoft Corp.ra-status: Information unavailable.fi.in 3More information about UUIDs can be found in Recommendation ITU-T X.667 (2012) | ISO/IEC 9834-8:2014 [X667].More information about the Microsoft Common Object Model (COM) can be found at Microsoft Docs <https://docs.microsoft.com/en-us/windows/win32/com/component-object-model--com--portal>..ti 07 Internationalization ConsiderationsThis document specifies that the request and response MUST be UTF-8 encoded (as defined in RFC\03629 [RFC3629]), without Byte-Order-Mark (BOM).The OID-IP service can define additional field names, but they SHOULD be written in the English language so that there is consistency with the field names defined in this document..bp.ti 08 Security Considerations(1) The knowledge of existence or information about some OIDs could be considered confidential. In this case, the OID-IP service can either deny the existence of the requested OID (by setting the result to "Not found") or redact information in the Object-Section, as defined in section\03.2.2 "Object-Section".(2) Registration Authorities might demand that their data is kept confidential, or at least be partially redacted to increase privacy or as a measurement against spam. In this case, the OID-IP service can redact information in the RA-Section, as defined in section\03.2.3 "RA-Section".(3) The OID-IP service can decide if confidential material is omitted or shown, based on authentication mechanisms like white-listing client IP addresses or by using authentication tokens supplied by the client, as defined in section\02.1 "Authentication Tokens"..\" REMOVED BECAUSE PAGE WOULD BE TOO LONG: "... supplied by the client [during the request], as defined in ..."(4) The usage of authentication tokens is not recommended if the traffic between client and server is transmitted through an untrusted network, because the OID-IP protocol is not encrypted.(5) Authentication tokens must have a sufficient length and complexity to avoid successful brute force attacks, or the OID-IP service must limit the number of requests per time.(6) The OID-IP protocol itself has no mechanism for verifying the integrity of data received. Due to this fact, the information should not be trusted if it is transmitted through an untrusted network. If integrity/authenticity is required, the OID-IP response can be signed, as described in section\03.3 "Digital Signature". However, this document does not describe a mechanism for detecting which signature method was used. Therefore, no interoperability of signature creation/validation is given at this time..bp.ti 09 IANA Considerations.ti 09.1 Port NumbersThis document requires the assignment of a TCP port number..in7.nf+--------------------+-----------------------------+| Service Name | oidip || Transport Protocol | TCP || Assignee | ... || Contact | ... || Description | OID Information Protocol || Reference | [RFCyyyy] || Port Number | XXX |+--------------------+-----------------------------+.fi.in3[Please change "yyyy" to the RFC number allocated to this document before publication.][Please change "XXX" placed at various locations in this document to the port number allocated by IANA.].ti 010 References.ti 010.1 Normative References.ti 3.in 14[E164] "The international public telecommunication numbering plan",Recommendation ITU-T\0E.164 (2010), November 2010..in 14<http://handle.itu.int/11.1002/1000/10688>..ti 3.in 14[RFC2119] Bradner, S., "Key words for use in RFCs to Indicate Requirement Levels", BCP\014, RFC\02119, DOI\010.17487/RFC2119, March\01997..in 14<http://www.rfc-editor.org/info/rfc2119>..ti 3.in 14[RFC3061] Mealling, M., "A URN Namespace of Object Identifiers", RFC\03061, DOI\010.17487/RFC3061, February\02001..in 14<http://www.rfc-editor.org/info/rfc3061>..ti 3.in 14[RFC3629] Yergeau, F., "UTF-8, a transformation format of ISO 10646", STD\063, RFC\03629, DOI\010.17487/RFC3629, November\02003..in 14<http://www.rfc-editor.org/info/rfc3629>..ti 3.in 14[RFC3986] Berners-Lee, T., "Uniform Resource Identifier (URI): Generic Syntax", STD\066, RFC\03986, DOI\010.17487/RFC3986, January\02005..in 14<http://www.rfc-editor.org/info/rfc3986>..ti 3.in 14[RFC5234] Crocker, D. and P. Overell, "Augmented BNF for Syntax Specifications: ABNF", STD\068, RFC\05234, DOI\010.17487/RFC5234, January\02008..in 14<http://www.rfc-editor.org/info/rfc5234>..ti 3.in 14[RFC8141] Saint-Andre, P., "Uniform Resource Names (URNs)", RFC\08141, DOI\010.17487/RFC8141, April\02017..in 14<http://www.rfc-editor.org/info/rfc8141>..ti 3.in 14[RFC8259] Bray, T., "The JavaScript Object Notation (JSON) Data Interchange Format", RFC\08259, DOI\010.17487/RFC8259, December\02017..in 14<http://www.rfc-editor.org/info/rfc8259>..ti 3.in 14[X660] "Information technology - Procedures for the operation of object identifier registration authorities: General procedures and top arcs of the international object identifier tree",Recommendation ITU-T\0X.660 (2011) | ISO/IEC\09834-1:2012, July\02011..in 14<http://handle.itu.int/11.1002/1000/11336>..ti 3.in 14[X680] "Information technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation",Recommendation ITU-T\0X.680 (2015) | ISO/IEC\08824-1:2015, August\02015..in 14<http://handle.itu.int/11.1002/1000/12479>..ti 3.in 14[XML] "Extensible Markup Language (XML) 1.1 (Second Edition)".in 14W3C Recommendation 16 August 2006, edited in place 29 September 2006.in 14<https://www.w3.org/TR/2006/REC-xml11-20060816/>.ti 010.2 Informative References.ti 3.in 14[RFC1157] Case, J., Fedor, M., Schoffstall, M., Davin, J., "A Simple Network Management Protocol (SNMP)", RFC\01157, DOI\010.17487/RFC1157, May\01990..in 14<http://www.rfc-editor.org/info/rfc1157>..ti 3.in 14[RFC4511] Sermersheim, J., "Lightweight Directory Access Protocol (LDAP): The Protocol", RFC\04511, DOI\010.17487/RFC4511, June\02006..in 14<http://www.rfc-editor.org/info/rfc4511>..ti 3.in 14[RFC4880] Callas, J., Donnerhacke, L., Finney, H., Shaw, D., Thayer, R., "OpenPGP Message Format", RFC\04880, DOI\010.17487/RFC4880, November\02007..in 14<http://www.rfc-editor.org/info/rfc4880>..ti 3.in 14[X509] "Information technology - Open Systems Interconnection - The Directory: Public-key and attribute certificate frameworks",Recommendation ITU-T\0X.509 (2016) |.in 14ISO/IEC 9594-8:2017, October\02016..in 14<http://handle.itu.int/11.1002/1000/13031>..ti 3.in 14[X667] "Information technology - Procedures for the operation of object identifier registration authorities: Generation of universally unique identifiers and their use in object identifiers",Recommendation ITU-T\0X.667 (2012) |.in 14ISO/IEC 9834-8:2014, October\02012..in 14<http://handle.itu.int/11.1002/1000/11746>..ti 3.in 14[X672] "Information technology - Open systems interconnection - Object identifier resolution system",.in 14Recommendation ITU-T\0X.672 (2010) | ISO/IEC 29168-1:2011, August\02010..in 14<http://handle.itu.int/11.1002/1000/10831>..bp.ti 0Appendix A.1: JSON Schema.in 0.nf{"$schema":"http://json-schema.org/draft-07/schema#","type":"object","properties":{"oidip":{"type":"array","items":[{"type":"object","properties":{"query":{"type":"string"},"result":{"type":"string","enum":["Found","Not found; superior object found","Not found","Service error"]},"distance":{"type":"string"},"message":{"type":"string"}},"required":["query","result"]},{"type":"object","properties":{"object":{"type":"string"},"status":{"type":"string","enum":["Information available","Information partially available","Information unavailable"]},"name":{"type":"string"},"description":{"type":"string"},"information":{"type":"string"},"url":{"type":"string"},"asn1-notation":{"oneOf":[{"type":"string"},{"type":"array","items":{"type":"string"}}]},"iri-notation":{"oneOf":[{"type":"string"},{"type":"array","items":{"type":"string"}}]},"identifier":{"oneOf":[{"type":"string"},{"type":"array","items":{"type":"string"}}]},"standardized-id":{"oneOf":[{"type":"string"},{"type":"array","items":{"type":"string"}}]},"unicode-label":{"oneOf":[{"type":"string"},{"type":"array","items":{"type":"string"}}]},"long-arc":{"oneOf":[{"type":"string"},{"type":"array","items":{"type":"string"}}]},"oidip-service":{"type":"string"},"attribute":{"oneOf":[{"type":"string","enum":["confidential","draft","frozen","leaf","no-identifiers","no-unicode-labels","retired"]},{"type":"array","items":{"type":"string","enum":["confidential","draft","frozen","leaf","no-identifiers","no-unicode-labels","retired"]}}]},"attachment-name":{"oneOf":[{"type":"string"},{"type":"array","items":{"type":"string"}}]},"attachment-url":{"oneOf":[{"type":"string"},{"type":"array","items":{"type":"string"}}]},"parent":{"type":"string"},"subordinate":{"oneOf":[{"type":"string"},{"type":"array","items":{"type":"string"}}]},"created":{"type":"string","pattern":"/^\\d{4}(\\-(0[1-9]|11|12)(\\-(0[1-9]|1\\d|2\\d|30|31)( [0-5][0-9]:[0-5][0-9](:[0-5][0-9]){0,1}( [\\+\\-][0-5][0-9][0-5][0-9]){0,1}){0,1}){0,1}){0,1}$/"},"updated":{"type":"string","pattern":"/^\\d{4}(\\-(0[1-9]|11|12)(\\-(0[1-9]|1\\d|2\\d|30|31)( [0-5][0-9]:[0-5][0-9](:[0-5][0-9]){0,1}( [\\+\\-][0-5][0-9][0-5][0-9]){0,1}){0,1}){0,1}){0,1}$/"}},"required":["object","status"]},{"type":"object","properties":{"ra":{"type":"string"},"ra-status":{"type":"string","enum":["Information available","Information partially available","Information unavailable"]},"ra-contact-name":{"type":"string"},"ra-address":{"type":"string"},"ra-phone":{"type":"string"},"ra-mobile":{"type":"string"},"ra-fax":{"type":"string"},"ra-email":{"type":"string"},"ra-url":{"type":"string"},"ra-attribute":{"oneOf":[{"type":"string","enum":["confidential","retired"]},{"type":"array","items":{"type":"string","enum":["confidential","retired"]}}]},"ra-created":{"type":"string","pattern":"/^\\d{4}(\\-(0[1-9]|11|12)(\\-(0[1-9]|1\\d|2\\d|30|31)( [0-5][0-9]:[0-5][0-9](:[0-5][0-9]){0,1}( [\\+\\-][0-5][0-9][0-5][0-9]){0,1}){0,1}){0,1}){0,1}$/"},"ra-updated":{"type":"string","pattern":"/^\\d{4}(\\-(0[1-9]|11|12)(\\-(0[1-9]|1\\d|2\\d|30|31)( [0-5][0-9]:[0-5][0-9](:[0-5][0-9]){0,1}( [\\+\\-][0-5][0-9][0-5][0-9]){0,1}){0,1}){0,1}){0,1}$/"}},"required":["ra","ra-status"]}]},"signature":{"type":"object","properties":{"content":{"type":"string"},"signature":{"type":"string"}},"required":["content","signature"]}},"required":["oidip"]}.fi.ti 0Appendix A.2: Example of output.nf{"$schema":"http://.../oidip_schema.json","oidip": [{"query": "oid:2.999","result": "Found"},{"object": "oid:2.999","status": "Information available","name": "Example","description": "This OID can be used by anyone, for the purposesof documenting examples of Object Identifiers.","asn1-notation": "{joint-iso-itu-t(2) example(999)}","iri-notation": "/Example","identifier": "example""unicode-label": ["Beispiel", "Ejemplo", "Example", "Exemple","<Korean characters are omitted in this example>","<Arabian characters are omitted in this example>","<Japanese characters are omitted in this example>","<Chinese characters are omitted in this example>","<Russian characters are omitted in this example>" ]"long-arc": ["Beispiel", "Ejemplo", "Example", "Exemple","<Korean characters are omitted in this example>","<Arabian characters are omitted in this example>","<Japanese characters are omitted in this example>","<Chinese characters are omitted in this example>","<Russian characters are omitted in this example>" ]"parent": "oid:2 (joint-iso-ccitt, joint-iso-itu-t)","subordinate": [],"created": "2011-06","updated": "2020-09"},{"ra": "ITU-T SG 17 & ISO/IEC JTC 1/SC 6","ra-status": "Information unavailable"}],"signature": {"content": "{\\"oidip\\":[{...<The contents of the "oidip"field are repeated here; ideally minified>...}]}","signature": <Base36 signature here>}}.fi.bp.ti 0Appendix B.1: XML Schema[Please change "yyyy" to the RFC number allocated to this document before publication.].in 0.nf<?xml version="1.0"?><xs:schema targetNamespace="urn:ietf:rfc:yyyy"attributeFormDefault="unqualified"elementFormDefault="qualified"xmlns:xs="http://www.w3.org/2001/XMLSchema"><xs:element name="root"><xs:complexType><xs:sequence><xs:element name="oidip"><xs:complexType><xs:sequence><xs:element name="querySection" minOccurs="1" maxOccurs="1"><xs:complexType><xs:choice maxOccurs="unbounded" minOccurs="1"><xs:element type="xs:string" name="query" minOccurs="1"/><xs:element name="result" minOccurs="1"><xs:simpleType><xs:restriction base="xs:string"><xs:enumeration value="Found"/><xs:enumeration value="Not found; superior object found"/><xs:enumeration value="Not found"/><xs:enumeration value="Service error"/></xs:restriction></xs:simpleType></xs:element><xs:element type="xs:string" name="distance" minOccurs="0"/><xs:element type="xs:string" name="message" minOccurs="0"/></xs:choice></xs:complexType></xs:element><xs:element name="objectSection" minOccurs="0" maxOccurs="1"><xs:complexType><xs:choice maxOccurs="unbounded" minOccurs="1"><xs:element type="xs:string" name="object" minOccurs="1"/><xs:element name="status" minOccurs="1"><xs:simpleType><xs:restriction base="xs:string"><xs:enumeration value="Information available"/><xs:enumeration value="Information partially available"/><xs:enumeration value="Information unavailable"/></xs:restriction></xs:simpleType></xs:element><xs:element type="xs:string" name="name" minOccurs="0"/><xs:element type="xs:string" name="description" minOccurs="0"/><xs:element type="xs:string" name="information" minOccurs="0"/><xs:element type="xs:string" name="url" minOccurs="0"/><xs:element type="xs:string" name="asn1-notation" minOccurs="0"/><xs:element type="xs:string" name="iri-notation" minOccurs="0"/><xs:element type="xs:string" name="identifier" minOccurs="0"/><xs:element type="xs:string" name="standardized-id" minOccurs="0"/><xs:element type="xs:string" name="unicode-label" minOccurs="0"/><xs:element type="xs:string" name="long-arc" minOccurs="0"/><xs:element type="xs:string" name="oidip-service" minOccurs="0"/><xs:element name="attribute" minOccurs="0"><xs:simpleType><xs:restriction base="xs:string"><xs:enumeration value="confidential"/><xs:enumeration value="draft"/><xs:enumeration value="frozen"/><xs:enumeration value="leaf"/><xs:enumeration value="no-identifiers"/><xs:enumeration value="no-unicode-labels"/><xs:enumeration value="retired"/></xs:restriction></xs:simpleType></xs:element><xs:element type="xs:string" name="parent" minOccurs="0"/><xs:element type="xs:string" name="subordinate"maxOccurs="unbounded" minOccurs="0"/><xs:element name="created" minOccurs="0"><xs:simpleType><xs:restriction base="xs:string"><xs:pattern value="\d{4}(\-(0[1-9]|11|12)(\-(0[1-9]|1\d|2\d|30|31)( [0-5][0-9]:[0-5][0-9](:[0-5][0-9]){0,1}( [\+\-][0-5][0-9][0-5][0-9]){0,1}){0,1}){0,1}){0,1}"></xs:pattern></xs:restriction></xs:simpleType></xs:element><xs:element name="updated" minOccurs="0"><xs:simpleType><xs:restriction base="xs:string"><xs:pattern value="\d{4}(\-(0[1-9]|11|12)(\-(0[1-9]|1\d|2\d|30|31)( [0-5][0-9]:[0-5][0-9](:[0-5][0-9]){0,1}( [\+\-][0-5][0-9][0-5][0-9]){0,1}){0,1}){0,1}){0,1}"></xs:pattern></xs:restriction></xs:simpleType></xs:element></xs:choice></xs:complexType></xs:element><xs:element name="raSection" minOccurs="0" maxOccurs="1"><xs:complexType><xs:choice maxOccurs="unbounded" minOccurs="1"><xs:element type="xs:string" name="ra" minOccurs="1"/><xs:element name="ra-status" minOccurs="1"><xs:simpleType><xs:restriction base="xs:string"><xs:enumeration value="Information available"/><xs:enumeration value="Information partially available"/><xs:enumeration value="Information unavailable"/></xs:restriction></xs:simpleType></xs:element><xs:element type="xs:string" name="ra-contact-name" minOccurs="0"/><xs:element type="xs:string" name="ra-address" minOccurs="0"/><xs:element type="xs:string" name="ra-phone" minOccurs="0"/><xs:element type="xs:string" name="ra-mobile" minOccurs="0"/><xs:element type="xs:string" name="ra-fax" minOccurs="0"/><xs:element type="xs:string" name="ra-email" minOccurs="0"/><xs:element type="xs:string" name="ra-url" minOccurs="0"/><xs:element name="ra-attribute" minOccurs="0"><xs:simpleType><xs:restriction base="xs:string"><xs:enumeration value="confidential"/><xs:enumeration value="retired"/></xs:restriction></xs:simpleType></xs:element><xs:element name="ra-created" minOccurs="0"><xs:simpleType><xs:restriction base="xs:string"><xs:pattern value="\d{4}(\-(0[1-9]|11|12)(\-(0[1-9]|1\d|2\d|30|31)( [0-5][0-9]:[0-5][0-9](:[0-5][0-9]){0,1}( [\+\-][0-5][0-9][0-5][0-9]){0,1}){0,1}){0,1}){0,1}"></xs:pattern></xs:restriction></xs:simpleType></xs:element><xs:element name="ra-updated" minOccurs="0"><xs:simpleType><xs:restriction base="xs:string"><xs:pattern value="\d{4}(\-(0[1-9]|11|12)(\-(0[1-9]|1\d|2\d|30|31)( [0-5][0-9]:[0-5][0-9](:[0-5][0-9]){0,1}( [\+\-][0-5][0-9][0-5][0-9]){0,1}){0,1}){0,1}){0,1}"></xs:pattern></xs:restriction></xs:simpleType></xs:element></xs:choice></xs:complexType></xs:element></xs:sequence></xs:complexType></xs:element><xs:element name="signature"><xs:complexType><xs:sequence><xs:element type="xs:string" name="content"/><xs:element type="xs:string" name="signature"/></xs:sequence></xs:complexType></xs:element></xs:sequence></xs:complexType></xs:element></xs:schema>.fi.ti 0Appendix B.2: Example of output[Please change "yyyy" to the RFC number allocated to this document before publication.].in 0.nf<root xmlns="urn:ietf:rfc:yyyy"xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xsi:schemaLocation="urn:ietf:rfc:yyyy .../oidip_schema.xsd"><oidip><querySection><query>oid:2.999</query><result>Found</result></querySection><objectSection><object>oid:2.999</object><status>Information available</status><asn1-notation>{ joint-iso-itu-t(2) example(999) }</asn1-notation><iri-notation>/Example</iri-notation><identifier>example</identifier><unicode-label>Beispiel</unicode-label><unicode-label>Ejemplo</unicode-label><unicode-label>Example</unicode-label><unicode-label>Exemple</unicode-label><unicode-label><Korean characters are omitted></unicode-label><unicode-label><Arabian characters are omitted></unicode-label><unicode-label><Japanese characters are omitted></unicode-label><unicode-label><Chinese characters are omitted></unicode-label><unicode-label><Russian characters are omitted></unicode-label><long-arc>Beispiel</long-arc><long-arc>Ejemplo</long-arc><long-arc>Example</long-arc><long-arc>Exemple</long-arc><long-arc><Korean characters are omitted></long-arc><long-arc><Arabian characters are omitted></long-arc><long-arc><Japanese characters are omitted></long-arc><long-arc><Chinese characters are omitted></long-arc><long-arc><Russian characters are omitted></long-arc><parent>oid:2 (joint-iso-ccitt, joint-iso-itu-t)</parent></objectSection><raSection><ra>ITU-T SG 17 & ISO/IEC JTC 1/SC 6</ra><ra-status>Information unavailable</ra-status></raSection></oidip><signature><content><oidip><The contents of the "oidip" field arerepeated here; ideally minified></oidip></content><signature><Base36 signature here></signature></signature></root>.fi.ti 0Acknowledgements.in 3.sp.nfOlivier Dubuisson.sp.fi.ti 0Authors' Addresses.in 3.sp.nfDaniel MarschallPostfach 11 5369243 BammentalGermanyEMail: daniel-marschall@viathinksoft.de.sp.fi