4914
EXPERIMENTAL
Abstract Syntax Notation X (ASN.X) Representation of Encoding Instructions for the XML Encoding Rules (XER)
Authors: S. Legg
Date: July 2007
Working Group: NON WORKING GROUP
Stream: IETF
Abstract
Abstract Syntax Notation X (ASN.X) is an Extensible Markup Language (XML) representation for Abstract Syntax Notation One (ASN.1) specifications. This document specifies the ASN.X representation of encoding instructions for the XML Encoding Rules (XER). This memo defines an Experimental Protocol for the Internet community.
RFC 4914
EXPERIMENTAL
Network Working Group S. Legg
Request for Comments: 4914 eB2Bcom
Category: Experimental July 2007
<span class="h1">Abstract Syntax Notation X (ASN.X) Representation</span>
<span class="h1">of Encoding Instructions for</span>
<span class="h1">the XML Encoding Rules (XER)</span>
Status of This Memo
This memo defines an Experimental Protocol for the Internet
community. It does not specify an Internet standard of any kind.
Discussion and suggestions for improvement are requested.
Distribution of this memo is unlimited.
Copyright Notice
Copyright (C) The IETF Trust (2007).
Abstract
Abstract Syntax Notation X (ASN.X) is an Extensible Markup Language
(XML) representation for Abstract Syntax Notation One (ASN.1)
specifications. This document specifies the ASN.X representation of
encoding instructions for the XML Encoding Rules (XER).
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Table of Contents
<a href="#section-1">1</a>. Introduction ....................................................<a href="#page-3">3</a>
<a href="#section-2">2</a>. Conventions .....................................................<a href="#page-3">3</a>
<a href="#section-3">3</a>. Preprocessing of ImportedTypesIdentification ....................<a href="#page-4">4</a>
<a href="#section-4">4</a>. EncodingInstructionAssignmentList Translation ...................<a href="#page-4">4</a>
<a href="#section-5">5</a>. EncodingInstruction Translation .................................<a href="#page-5">5</a>
<a href="#section-5.1">5.1</a>. AnyAttributesInstruction Translation .......................<a href="#page-6">6</a>
<a href="#section-5.1.1">5.1.1</a>. NamespaceRestriction Translation ....................<a href="#page-7">7</a>
<a href="#section-5.2">5.2</a>. AnyElementInstruction Translation ..........................<a href="#page-7">7</a>
<a href="#section-5.3">5.3</a>. AttributeInstruction Translation ...........................<a href="#page-7">7</a>
<a href="#section-5.4">5.4</a>. Base64Instruction Translation ..............................<a href="#page-8">8</a>
<a href="#section-5.5">5.5</a>. DecimalInstruction Translation .............................<a href="#page-8">8</a>
<a href="#section-5.6">5.6</a>. DefaultForEmptyInstruction Translation .....................<a href="#page-8">8</a>
<a href="#section-5.7">5.7</a>. ElementInstruction Translation .............................<a href="#page-8">8</a>
<a href="#section-5.8">5.8</a>. EmbedValuesInstruction Translation .........................<a href="#page-8">8</a>
<a href="#section-5.9">5.9</a>. GlobalDefaultsInstruction Translation ......................<a href="#page-8">8</a>
<a href="#section-5.10">5.10</a>. ListInstruction Translation ...............................<a href="#page-9">9</a>
<a href="#section-5.11">5.11</a>. NameInstruction Translation ...............................<a href="#page-9">9</a>
<a href="#section-5.12">5.12</a>. NamespaceInstruction Translation .........................<a href="#page-10">10</a>
<a href="#section-5.13">5.13</a>. PIOrCommentInstruction Translation .......................<a href="#page-10">10</a>
<a href="#section-5.14">5.14</a>. TextInstruction Translation ..............................<a href="#page-11">11</a>
<a href="#section-5.15">5.15</a>. UntaggedInstruction Translation ..........................<a href="#page-11">11</a>
<a href="#section-5.16">5.16</a>. UseNilInstruction Translation ............................<a href="#page-12">12</a>
<a href="#section-5.17">5.17</a>. UseNumberInstruction Translation .........................<a href="#page-12">12</a>
<a href="#section-5.18">5.18</a>. UseOrderInstruction Translation ..........................<a href="#page-12">12</a>
<a href="#section-5.19">5.19</a>. UseQNameInstruction Translation ..........................<a href="#page-12">12</a>
<a href="#section-5.20">5.20</a>. UseTypeInstruction Translation ...........................<a href="#page-12">12</a>
<a href="#section-5.21">5.21</a>. UseUnionInstruction Translation ..........................<a href="#page-12">12</a>
<a href="#section-5.22">5.22</a>. WhiteSpaceInstruction Translation ........................<a href="#page-12">12</a>
<a href="#section-6">6</a>. TargetList Translation .........................................<a href="#page-13">13</a>
<a href="#section-6.1">6.1</a>. TypeIdentification Translation ............................<a href="#page-13">13</a>
<a href="#section-6.2">6.2</a>. BuiltInTypeIdentification Translation .....................<a href="#page-15">15</a>
<a href="#section-6.3">6.3</a>. IdentifiersInContext Translation ..........................<a href="#page-17">17</a>
<a href="#section-7">7</a>. Security Considerations ........................................<a href="#page-18">18</a>
<a href="#section-8">8</a>. References .....................................................<a href="#page-18">18</a>
<a href="#section-8.1">8.1</a>. Normative References ......................................<a href="#page-18">18</a>
<a href="#section-8.2">8.2</a>. Informative References ....................................<a href="#page-19">19</a>
<a href="#appendix-A">Appendix A</a>. ASN.1 for XER Encoding Instruction Notation ...........<a href="#page-20">20</a>
<a href="#appendix-B">Appendix B</a>. ASN.1 for Target List Notation ........................<a href="#page-24">24</a>
<a href="#appendix-C">Appendix C</a>. ASN.X for XER Encoding Instruction Notation ...........<a href="#page-26">26</a>
<a href="#appendix-D">Appendix D</a>. ASN.X for Target List Notation ........................<a href="#page-33">33</a>
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<span class="h2"><a class="selflink" id="section-1" href="#section-1">1</a>. Introduction</span>
Abstract Syntax Notation X (ASN.X) [<a href="#ref-ASN.X" title=""Abstract Syntax Notation X (ASN.X)"">ASN.X</a>] is an Extensible Markup
Language (XML) [<a href="#ref-XML10" title=""Extensible Markup Language (XML) 1.0 (Fourth Edition)"">XML10</a>] [<a href="#ref-XML11" title=""Extensible Markup Language (XML) 1.1 (Second Edition)"">XML11</a>] representation for Abstract Syntax
Notation One (ASN.1) [<a href="#ref-X.680">X.680</a>] specifications. The ASN.X
representation for the ASN.1 basic notation [<a href="#ref-X.680">X.680</a>] [<a href="#ref-X.680-1">X.680-1</a>] is
described elsewhere [<a href="#ref-ASN.X" title=""Abstract Syntax Notation X (ASN.X)"">ASN.X</a>].
The grammar of ASN.1 permits the application of encoding instructions
[<a href="#ref-X.680-1">X.680-1</a>], through type prefixes and encoding control sections, that
modify how abstract values are encoded by nominated encoding rules.
The generic notation for type prefixes and encoding control sections
is defined by the ASN.1 basic notation; however, the notation for
specific encoding instructions, i.e., the EncodingInstruction and
EncodingInstructionAssignmentList productions of the notation, are
defined separately for each set of encoding rules using encoding
instructions. This document specifies the ASN.X representation for
EncodingInstructionAssignmentList and EncodingInstruction as they are
defined for the XML Encoding Rules (XER) [<a href="#ref-X.693">X.693</a>][X.693-1].
ASN.X is defined in terms of rules for translating from an ASN.1
specification. This does not preclude an ASN.X module being written
directly without a pre-existing ASN.1 module; however, such an ASN.X
module is considered valid if and only if there exists, in principle,
an ASN.1 module that when translated would yield the ASN.X module.
By design, an ASN.X module is also the Robust XML Encoding Rules
(RXER) [<a href="#ref-RXER" title=""Robust XML Encoding Rules (RXER) for Abstract Syntax Notation One (ASN.1)"">RXER</a>] encoding of an ASN.1 value. The ASN.1 type definitions
for such values, insofar as they pertain to the ASN.1 basic notation,
are provided elsewhere [<a href="#ref-ASN.X" title=""Abstract Syntax Notation X (ASN.X)"">ASN.X</a>]; however, this document provides the
ASN.1 type definitions for representing XER encoding instructions as
abstract values. These definitions appear in <a href="#appendix-A">Appendix A</a>.
The ASN.X translation of the ASN.1 module in <a href="#appendix-A">Appendix A</a> is presented
in <a href="#appendix-B">Appendix B</a>.
The General Considerations of the specification for ASN.X [<a href="#ref-ASN.X" title=""Abstract Syntax Notation X (ASN.X)"">ASN.X</a>]
also apply here.
<span class="h2"><a class="selflink" id="section-2" href="#section-2">2</a>. Conventions</span>
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT",
"SHOULD", "SHOULD NOT", "RECOMMENDED", and "MAY" in this document are
to be interpreted as described in <a href="https://www.rfc-editor.org/bcp/bcp14">BCP 14</a>, <a href="./rfc2119">RFC 2119</a> [<a href="#ref-BCP14" title=""Key words for use in RFCs to Indicate Requirement Levels"">BCP14</a>]. The key
word "OPTIONAL" is exclusively used with its ASN.1 meaning.
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A reference to an ASN.1 production [<a href="#ref-X.680">X.680</a>] (e.g., Type, NamedType) is
a reference to the text in an ASN.1 specification corresponding to
that production.
The description of the translation of XER encoding instructions into
ASN.X makes use of definitions from the XML Information Set (Infoset)
[<a href="#ref-INFOSET" title=""XML Information Set (Second Edition)"">INFOSET</a>]. In particular, information item property names follow the
Infoset convention of being shown in square brackets, e.g.,
[local name]. Literal values of Infoset properties are enclosed in
double quotes; however, the double quotes are not part of the
property values. In the sections that follow, "information item"
will be abbreviated to "item", e.g., "element information item" is
abbreviated to "element item". Element items will be referred to by
their [local name] in angle brackets, e.g., "the <name> element item"
means the element item with the [local name] "name". Attribute items
will be referred to by their [local name], e.g., "the name attribute
item" means the attribute item with the [local name] "name".
Code points for characters [<a href="#ref-UNICODE" title=""The Unicode Standard, Version 4.0"">UNICODE</a>] are expressed using the Unicode
convention U+n, where n is four to six hexadecimal digits, e.g., the
space character is U+0020.
<span class="h2"><a class="selflink" id="section-3" href="#section-3">3</a>. Preprocessing of ImportedTypesIdentification</span>
Interpretation of an ImportedTypesIdentification depends on a
SymbolList in the Imports of a module, but a SymbolList does not have
a direct translation into ASN.X. A module containing at least one
ImportedTypesIdentification must be preprocessed so that each
ImportedTypesIdentification has the intended effect.
If an EncodingInstruction in an XER EncodingInstructionAssignmentList
has a Targets instance that is an ImportedTypesIdentification, then
each Type affected by the ImportedTypesIdentification MUST be
replaced by an EncodingPrefixedType where the Type in the
EncodingPrefixedType is the original Type and the EncodingPrefix
contains the EncodingInstruction minus the TargetList. The
ImportedTypesIdentification SHALL be removed. If the
EncodingInstruction in the EncodingInstructionAssignmentList has no
other Targets instances, then it MUST be removed from the
EncodingInstructionAssignmentList.
<span class="h2"><a class="selflink" id="section-4" href="#section-4">4</a>. EncodingInstructionAssignmentList Translation</span>
As described in the specification for ASN.X [<a href="#ref-ASN.X" title=""Abstract Syntax Notation X (ASN.X)"">ASN.X</a>], the translation
of an EncodingControlSection for XER is an element item with the
[local name] "XER". The translation of the
EncodingInstructionAssignmentList in such an EncodingControlSection
determines the content of the <XER> element item.
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An element item with the [local name] "annotation" MAY be added to
the [children] of the <XER> element item.
The translation of each EncodingInstruction nested in the
EncodingInstructionAssignmentList SHALL be appended to the [children]
of the <XER> element item.
<span class="h2"><a class="selflink" id="section-5" href="#section-5">5</a>. EncodingInstruction Translation</span>
The translation of an EncodingInstruction for XER can appear in the
translation of an EncodingInstructionAssignmentList (see the previous
section) or an EncodingPrefix. The translation for an EncodingPrefix
is described by the specification for ASN.X [<a href="#ref-ASN.X" title=""Abstract Syntax Notation X (ASN.X)"">ASN.X</a>].
The translation of an EncodingInstruction in an
EncodingInstructionAssignmentList for XER is an element item with the
[local name] "targettedInstruction". The translation of the
PositiveInstruction or NegatingInstruction in the EncodingInstruction
SHALL be added to the [children] of the <targettedInstruction>
element item. The translation of the TargetList nested in the
encoding instruction SHALL be appended to the [children] of the
<targettedInstruction> element item.
Aside: The TargetList appears within an EncodingInstruction in an
EncodingInstructionAssignmentList, but its ASN.X translation
appears immediately after the translation of the
EncodingInstruction, rather than within it.
Example
ENCODING-CONTROL XER
GLOBAL-DEFAULTS MODIFIED-ENCODINGS
ATTRIBUTE MyType
<encodingControls>
<XER>
<targettedInstruction>
<globalDefaults>
<modifiedEncodings/>
</globalDefaults>
</targettedInstruction>
<targettedInstruction>
<attribute/>
<target type="MyType"/>
</targettedInstruction>
</XER>
</encodingControls>
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The translation of an EncodingInstruction for XER in an
EncodingPrefix is the translation of the PositiveInstruction or
NegatingInstruction in the EncodingInstruction.
Aside: The TargetList within an EncodingInstruction in an
EncodingPrefix is required to be empty and has no ASN.X
translation in this context.
The translation of a PositiveInstruction is the translation of the
AnyAttributeInstruction, AnyElementInstruction, AttributeInstruction,
Base64Instruction, DecimalInstruction, DefaultForEmptyInstruction,
EmbedValuesInstruction, GlobalDefaultsInstruction, ListInstruction,
NameInstruction, NamespaceInstruction, PIOrCommentInstruction,
TextInstruction, UntaggedInstruction, UseNilInstruction,
UseNumberInstruction, UseOrderInstruction, UseQNameInstruction,
UseTypeInstruction, UseUnionInstruction or WhitespaceInstruction in
the PositiveInstruction.
The translation of a NegatingInstruction that is an
ElementInstruction is the translation of that ElementInstruction.
The translation of a NegatingInstruction that is not an
ElementInstruction is an element item where the [local name] is the
concatenation of "not-" and the [local name] that would be used by
the translation of the PositiveInstruction in the
NegatingInstruction. No items are added to the [attributes] or
[children] of the element item resulting from the translation of a
NegatingInstruction.
Example
[XER:NOT ATTRIBUTE] MyType
<type>
<prefixed>
<XER><not-attribute/></XER>
<type ref="MyType"/>
</prefixed>
</type>
<span class="h3"><a class="selflink" id="section-5.1" href="#section-5.1">5.1</a>. AnyAttributesInstruction Translation</span>
The translation of an AnyAttributesInstruction is an element item
with the [local name] "anyAttributes". If a NamespaceRestriction is
present in the AnyAttributesInstruction, then the translation of the
NamespaceRestriction SHALL be added to the [children] of the
<anyAttributes> element item.
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Example
ANY-ATTRIBUTES FROM "http://example.com" ABSENT
<anyAttributes>
<namespace>http://example.com</namespace>
<local/>
</anyAttributes>
<span class="h4"><a class="selflink" id="section-5.1.1" href="#section-5.1.1">5.1.1</a>. NamespaceRestriction Translation</span>
The NamespaceRestriction production is common to the
AnyAttributesInstruction production and the AnyElementInstruction
production.
The translation of a NamespaceRestriction of the "FROM URIList" form
is an element item with the [local name] "from". The translation of
each QuotedURIorAbsent nested in the URIList SHALL be appended to the
[children] of the <from> element item.
The translation of a NamespaceRestriction of the "EXCEPT URIList"
form is an element item with the [local name] "except". The
translation of each QuotedURIorAbsent nested in the URIList SHALL be
appended to the [children] of the <except> element item.
The translation of a QuotedURIorAbsent that is a QuotedURI is an
element item with the [local name] "namespace". The sequence of
character items for the URI in the QuotedURI is added to the
[children] of the <namespace> element item.
The translation of a QuotedURIorAbsent of the "ABSENT" form is an
element item with the [local name] "local".
<span class="h3"><a class="selflink" id="section-5.2" href="#section-5.2">5.2</a>. AnyElementInstruction Translation</span>
The translation of an AnyElementInstruction is an element item with
the [local name] "anyElement". If a NamespaceRestriction is present
in the AnyElementInstruction, then the translation of the
NamespaceRestriction SHALL be added to the [children] of the
<anyElement> element item.
<span class="h3"><a class="selflink" id="section-5.3" href="#section-5.3">5.3</a>. AttributeInstruction Translation</span>
The translation of an AttributeInstruction is an element item with
the [local name] "attribute".
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Example
ATTRIBUTE
<attribute/>
<span class="h3"><a class="selflink" id="section-5.4" href="#section-5.4">5.4</a>. Base64Instruction Translation</span>
The translation of a Base64Instruction is an element item with the
[local name] "base64".
<span class="h3"><a class="selflink" id="section-5.5" href="#section-5.5">5.5</a>. DecimalInstruction Translation</span>
The translation of a DecimalInstruction is an element item with the
[local name] "decimal".
<span class="h3"><a class="selflink" id="section-5.6" href="#section-5.6">5.6</a>. DefaultForEmptyInstruction Translation</span>
The translation of a DefaultForEmptyInstruction is an element item
with the [local name] "defaultForEmpty". The translation of the
Value in the DefaultForEmptyInstruction SHALL be added to the
[children] or [attributes] of the <defaultForEmpty> element item.
Example
DEFAULT-FOR-EMPTY AS "unspecified"
<defaultForEmpty literalValue="unspecified"/>
<span class="h3"><a class="selflink" id="section-5.7" href="#section-5.7">5.7</a>. ElementInstruction Translation</span>
The translation of an ElementInstruction is an element item with the
[local name] "element".
<span class="h3"><a class="selflink" id="section-5.8" href="#section-5.8">5.8</a>. EmbedValuesInstruction Translation</span>
The translation of an EmbedValuesInstruction is an element item with
the [local name] "embedValues".
<span class="h3"><a class="selflink" id="section-5.9" href="#section-5.9">5.9</a>. GlobalDefaultsInstruction Translation</span>
The translation of a GlobalDefaultsInstruction is an element item
with the [local name] "globalDefaults".
If the DefaultSetting in the GlobalDefaultsInstruction is "MODIFIED-
ENCODINGS", then an element item with the [local name]
"modifiedEncodings" SHALL be added to the [children] of the
<globalDefaults> element item.
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If the DefaultSetting in the GlobalDefaultsInstruction is a
ControlNamespace, then the translation of the ControlNamespace SHALL
be added to the [children] of the <globalDefaults> element item.
The translation of a ControlNamespace is an element item with the
[local name] "controlNamespace". An attribute item with the
[local name] "name" SHALL be added to the [attributes] of the
<controlNamespace> element item. The [normalized value] of this
attribute item is the Uniform Resource Identifier (URI) [<a href="#ref-URI" title=""Uniform Resource Identifiers (URI): Generic Syntax"">URI</a>] in the
QuotedURI in the ControlNamespace. If the ControlNamespace has a
Prefix, then an attribute item with the [local name] "prefix" SHALL
be added to the [attributes] of the <controlNamespace> element item.
The [normalized value] of this attribute item is the NCName in the
QuotedNCName in the Prefix.
Example
GLOBAL-DEFAULTS
CONTROL-NAMESPACE "http://example.com" PREFIX "ex"
<globalDefaults>
<controlNamespace name="http://example.com" prefix="ex"/>
</globalDefaults>
<span class="h3"><a class="selflink" id="section-5.10" href="#section-5.10">5.10</a>. ListInstruction Translation</span>
The translation of a ListInstruction is an element item with the
[local name] "list".
<span class="h3"><a class="selflink" id="section-5.11" href="#section-5.11">5.11</a>. NameInstruction Translation</span>
The translation of a NameInstruction is an element item with the
[local name] "name".
If the NewNameOrKeyword in the NameInstruction is a NewName, then an
attribute item with the [local name] "newName" SHALL be added to the
[attributes] of the <name> element item. The [normalized value] of
this attribute item is the character string value of the
RestrictedCharacterStringValue in the NewName.
If the NewNameOrKeyword in the NameInstruction is a Keyword, then an
attribute item with the [local name] "conversion" SHALL be added to
the [attributes] of the <name> element item. The [normalized value]
of this attribute item is the word in the Keyword with all letters
downcased, i.e., "capitalized", "uncapitalized", "uppercased", or
"lowercased".
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Example
NAME AS UNCAPITALIZED
<name conversion="uncapitalized"/>
NAME AS "category"
<name newName="category"/>
<span class="h3"><a class="selflink" id="section-5.12" href="#section-5.12">5.12</a>. NamespaceInstruction Translation</span>
The translation of a NamespaceInstruction is an element item with the
[local name] "namespace".
If a NamespaceSpecification is present in the NamespaceInstruction,
then an attribute item with the [local name] "name" SHALL be added to
the [attributes] of the <namespace> element item. The
[normalized value] of this attribute item is the URI in the QuotedURI
in the NamespaceSpecification.
If a Prefix is present in the NamespaceSpecification, then an
attribute item with the [local name] "prefix" SHALL be added to the
[attributes] of the <namespace> element item. The [normalized value]
of this attribute item is the NCName in the QuotedNCName in the
Prefix.
Example
NAMESPACE AS "http://example.com" PREFIX "ex"
<namespace name="http://example.com" prefix="ex"/>
<span class="h3"><a class="selflink" id="section-5.13" href="#section-5.13">5.13</a>. PIOrCommentInstruction Translation</span>
The translation of a PIOrCommentInstruction is an element item with
the [local name] "piOrComment".
An attribute item with the [local name] "text" SHALL be added to the
[attributes] of the <piOrComment> element item. The
[normalized value] of this attribute item is the character string
value of the RestrictedCharacterStringValue in the
PIOrCommentInstruction.
An attribute item with the [local name] "position" SHALL be added to
the [attributes] of the <piOrComment> element item. The
[normalized value] of this attribute item is "beforeTag" if the
keyword in the Position in the PIOrCommentInstruction is BEFORE-TAG,
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"beforeValue" if the keyword in the Position is BEFORE-VALUE,
"afterValue" if the keyword in the Position is AFTER-VALUE, or
"afterTag" if the keyword in the Position is AFTER-TAG.
Example
PI-OR-COMMENT AS "<!-- This is a comment. -->" BEFORE-TAG
<piOrComment text="<!-- This is a comment. -->"
position="beforeTag"/>
<span class="h3"><a class="selflink" id="section-5.14" href="#section-5.14">5.14</a>. TextInstruction Translation</span>
The translation of a TextInstruction is an element item with the
[local name] "text".
If a TextToBeUsed is present in the TextInstruction and the
NewNameOrKeyword in the TextToBeUsed is a NewName, then an attribute
item with the [local name] "newName" SHALL be added to the
[attributes] of the <text> element item. The [normalized value] of
this attribute item is the character string value of the
RestrictedCharacterStringValue in the NewName.
If a TextToBeUsed is present in the TextInstruction and the
NewNameOrKeyword in the TextToBeUsed is a Keyword, then an attribute
item with the [local name] "conversion" SHALL be added to the
[attributes] of the <name> element item. The [normalized value] of
this attribute item is the word in the Keyword with all letters
downcased, i.e., "capitalized", "uncapitalized", "uppercased", or
"lowercased".
Examples
TEXT AS UPPERCASED
<text conversion="uppercased"/>
TEXT AS "A4"
<text newName="A4"/>
<span class="h3"><a class="selflink" id="section-5.15" href="#section-5.15">5.15</a>. UntaggedInstruction Translation</span>
The translation of an UntaggedInstruction is an element item with the
[local name] "untagged".
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<span class="h3"><a class="selflink" id="section-5.16" href="#section-5.16">5.16</a>. UseNilInstruction Translation</span>
The translation of a UseNilInstruction is an element item with the
[local name] "useNil".
<span class="h3"><a class="selflink" id="section-5.17" href="#section-5.17">5.17</a>. UseNumberInstruction Translation</span>
The translation of a UseNumberInstruction is an element item with the
[local name] "useNumber".
<span class="h3"><a class="selflink" id="section-5.18" href="#section-5.18">5.18</a>. UseOrderInstruction Translation</span>
The translation of a UseOrderInstruction is an element item with the
[local name] "useOrder".
<span class="h3"><a class="selflink" id="section-5.19" href="#section-5.19">5.19</a>. UseQNameInstruction Translation</span>
The translation of a UseQNameInstruction is an element item with the
[local name] "useQName".
<span class="h3"><a class="selflink" id="section-5.20" href="#section-5.20">5.20</a>. UseTypeInstruction Translation</span>
The translation of a UseTypeInstruction is an element item with the
[local name] "useType".
<span class="h3"><a class="selflink" id="section-5.21" href="#section-5.21">5.21</a>. UseUnionInstruction Translation</span>
The translation of a UseUnionInstruction is an element item with the
[local name] "useUnion".
<span class="h3"><a class="selflink" id="section-5.22" href="#section-5.22">5.22</a>. WhiteSpaceInstruction Translation</span>
The translation of a WhiteSpaceInstruction is an element item with
the [local name] "whiteSpace".
An attribute item with the [local name] "action" SHALL be added to
the [attributes] of the <whiteSpace> element item. The
[normalized value] of this attribute item is the word in the
WhiteSpaceAction in the WhiteSpaceInstruction with all letters
downcased, i.e., "replace" or "collapse".
Example
WHITESPACE COLLAPSE
<whiteSpace action="collapse"/>
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<span class="h2"><a class="selflink" id="section-6" href="#section-6">6</a>. TargetList Translation</span>
The TargetList production is common to all the encoding instructions.
The translation of a TargetList is the concatenation of the
translations of each Targets instance in the TargetList.
The translation of a Targets instance is an element item with the
[local name] "target". The translation of the TypeIdentification,
BuiltInTypeIdentification or IdentifiersInContext in the Targets
instance SHALL be added to the [children] and/or [attributes] of the
<target> element item.
Aside: A Targets instance that is an ImportedTypesIdentification
will have been removed by the preprocessing described in
<a href="#section-3">Section 3</a>.
<span class="h3"><a class="selflink" id="section-6.1" href="#section-6.1">6.1</a>. TypeIdentification Translation</span>
The translation of a TypeIdentification of the "ALL" form is an
element item with the [local name] "allTypes"; otherwise, the
translation of a TypeIdentification is the translation of its
ModuleAndTypeReference followed by the translation of its
ComponentReference, if present, followed by the translation of its
QualifyingInformationPart, if present.
The translation of a ModuleAndTypeReference is an attribute item with
the [local name] "type". The [normalized value] of this attribute
item is a qualified name [<a href="#ref-XMLNS10" title=""Namespaces in XML 1.0 (Second Edition)"">XMLNS10</a>] for the expanded name
corresponding to the typereference in the ModuleAndTypeReference (see
<a href="#section-5.1">Section 5.1</a> of the specification for ASN.X [<a href="#ref-ASN.X" title=""Abstract Syntax Notation X (ASN.X)"">ASN.X</a>]).
The translation of a ComponentReference is an element item with the
[local name] "component". The [children] property of the <component>
element item is set to the sequence of character items for a solidus
('/', U+002F) separated list of the translations of the ComponentId
instances in the ComponentIdList in the ComponentReference, excluding
"ALL" if present. Leading and/or trailing white space character
items [<a href="#ref-ASN.X" title=""Abstract Syntax Notation X (ASN.X)"">ASN.X</a>] MAY be added to the [children] of the <component>
element item. White space character items MAY be added immediately
before and/or after any character item for the solidus character
('/', U+002F). If the final ComponentId in the ComponentIdList in
the ComponentReference is "ALL", then an element item with the
[local name] "allTextuallyPresent" SHALL follow the <component>
element item.
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If a ComponentId identifies the Type in a NamedType, then the
translation of the ComponentId is a qualified name for the expanded
name [<a href="#ref-XMLNS10" title=""Namespaces in XML 1.0 (Second Edition)"">XMLNS10</a>] of the NamedType [<a href="#ref-RXEREI" title=""Encoding Instructions for the Robust XML Encoding Rules (RXER)"">RXEREI</a>]. If the NamedType is
subject to an RXER ATTRIBUTE or ATTRIBUTE-REF encoding instruction
[<a href="#ref-RXEREI" title=""Encoding Instructions for the Robust XML Encoding Rules (RXER)"">RXEREI</a>], or subject to an RXER COMPONENT-REF encoding instruction
that references a top-level NamedType that is subject to an RXER
ATTRIBUTE encoding instruction, then the qualified name is prefixed
with the commercial at character ('@', U+0040).
If a ComponentId identifies a Type that is not in a NamedType (i.e.,
the component type for a SEQUENCE OF Type or SET OF Type), then the
translation of the ComponentId is the character string "item".
If a ComponentId does not identify a Type and the ComponentId is an
identifier, then the translation of the ComponentId is the
identifier.
If a ComponentId does not identify a Type and the ComponentId is "*",
then the translation of the ComponentId is the character string
"item".
The <component> element item is required to be self-contained [<a href="#ref-RXER" title=""Robust XML Encoding Rules (RXER) for Abstract Syntax Notation One (ASN.1)"">RXER</a>].
Aside: An element item is self-contained if all namespace prefixes
used by the element item and its contents are declared within the
element item.
The translation of a QualifyingInformationPart is the translation of
the QualifyingInformation instance in the QualifyingInformationPart.
The translation of a QualifyingInformation instance of the
"identifier" form is an element item with the [local name]
"identifier". An attribute item with the [local name] "name" SHALL
be added to the [attributes] of the <identifier> element item. If
the ModuleTypeAndReference and ComponentReference (if present) in the
TypeIdentification identify a BIT STRING, ENUMERATED, or INTEGER type
where the associated BitStringType, EnumeratedType, or IntegerType
(respectively) is subject to an RXER VALUES encoding instruction,
then the [normalized value] of the attribute item is the replacement
name [<a href="#ref-RXEREI" title=""Encoding Instructions for the Robust XML Encoding Rules (RXER)"">RXEREI</a>] for the identifier; otherwise, the [normalized value]
is the identifier.
The translation of a QualifyingInformation instance of the "ALL" form
is an element item with the [local name] "allIdentifiers".
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Examples
Assume this type assignment:
MyType ::= SEQUENCE {
a SEQUENCE OF CHOICE {
b ENUMERATED { red, green, blue },
c INTEGER
}
}
MyType.a.*.ALL
<target type="MyType">
<component> a / item </component>
<allTextuallyPresent/>
</target>
MyType.a.*.b:ALL
<target type="MyType">
<component> a / item / b </component>
<allIdentifiers/>
</target>
<span class="h3"><a class="selflink" id="section-6.2" href="#section-6.2">6.2</a>. BuiltInTypeIdentification Translation</span>
The translation of a BuiltInTypeIdentification is the translation of
its BuiltInTypeName followed by the translation of its
BuiltInTypeQualifyingInformationPart, if present.
If the BuiltInTypeName is "BIT STRING", "BOOLEAN",
"CHARACTER STRING", "EMBEDDED PDV", "EXTERNAL", "GeneralizedTime",
"INTEGER", "NULL", "ObjectDescriptor", "OBJECT IDENTIFIER",
"OCTET STRING", "REAL", "RELATIVE-OID", or "UTCTime", then the
translation of the BuiltInTypeName is an attribute item with the
[local name] "type". The [normalized value] of this attribute item
is a qualified name with the namespace name being
"urn:ietf:params:xml:ns:asnx" and the local part being the
BuiltInTypeName with any white space separators replaced by a single
hyphen character ('-', U+002D), e.g., BIT STRING becomes BIT-STRING.
If the BuiltInTypeName is a RestrictedCharacterStringType, then the
translation of the BuiltInTypeName is an attribute item with the
[local name] "type". The [normalized value] of this attribute item
is a qualified name with the namespace name being
"urn:ietf:params:xml:ns:asnx" and the local part being the
RestrictedCharacterStringType, i.e., BMPString, GeneralString,
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GraphicString, IA5String, ISO646String, NumericString,
PrintableString, TeletexString, T61String, UniversalString,
UTF8String, VideotexString, or VisibleString.
If the BuiltInTypeName is "CHOICE", then the translation of the
BuiltInTypeName is an element item with the [local name] "choice".
If the BuiltInTypeName is "ENUMERATED", then the translation of the
BuiltInTypeName is an element item with the [local name]
"enumerated".
If the BuiltInTypeName is "INSTANCE OF", then the translation of the
BuiltInTypeName is an element item with the [local name]
"instanceOf".
If the BuiltInTypeName is "SEQUENCE", then the translation of the
BuiltInTypeName is an element item with the [local name] "sequence".
If the BuiltInTypeName is "SEQUENCE OF", then the translation of the
BuiltInTypeName is an element item with the [local name]
"sequenceOf".
If the BuiltInTypeName is "SET", then the translation of the
BuiltInTypeName is an element item with the [local name] "set".
If the BuiltInTypeName is "SET OF", then the translation of the
BuiltInTypeName is an element item with the [local name] "setOf".
The translation of a BuiltInTypeQualifyingInformationPart is the
translation of the BuiltInTypeQualifyingInformation instance in the
BuiltInTypeQualifyingInformationPart.
The translation of a BuiltInTypeQualifyingInformation instance of the
"identifier" form is an element item with the [local name]
"identifier". An attribute item with the [local name] "name" SHALL
be added to the [attributes] of the <identifier> element item. The
[normalized value] of this attribute item is the identifier in the
BuiltInTypeQualifyingInformation instance.
The translation of a BuiltInTypeQualifyingInformation instance of the
"ALL" form is an element item with the [local name] "allIdentifiers".
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Examples
BOOLEAN:true
<target xmlns:asnx="urn:ietf:params:xml:ns:asnx"
type="asnx:BOOLEAN">
<identifier name="true"/>
</target>
ENUMERATED:ALL
<target>
<enumerated/>
<allIdentifiers/>
</target>
<span class="h3"><a class="selflink" id="section-6.3" href="#section-6.3">6.3</a>. IdentifiersInContext Translation</span>
The translation of an IdentifiersInContext instance is an element
item with the [local name] "components".
If the IdentifierList in the IdentifiersInContext instance is not of
the "ALL" or "COMPONENTS" form, then for each identifier in the
IdentifierList, an element item with the same [local name] (i.e.,
"attribute", "element", "component", "group", "item", "member", or
"simpleContent") as the translation of the NamedType corresponding to
the identifier SHALL be appended to the [children] of the
<components> element item. An attribute item with the [local name]
"name" SHALL be added to the [attributes] of each <attribute>,
<element>, <component>, <group>, <item>, <member>, or <simpleContent>
element item. The [normalized value] of each of these attribute
items is a qualified name for the expanded name [<a href="#ref-XMLNS10" title=""Namespaces in XML 1.0 (Second Edition)"">XMLNS10</a>] of the
NamedType [<a href="#ref-RXEREI" title=""Encoding Instructions for the Robust XML Encoding Rules (RXER)"">RXEREI</a>] corresponding to the identifier.
If the IdentifierList in the IdentifiersInContext instance is of the
"ALL" form, then an element item with the [local name]
"allTextuallyPresent" SHALL be appended to the [children] of the
<components> element item.
If the IdentifierList in the IdentifiersInContext instance is of the
"COMPONENTS" form, then an element item with the [local name]
"allFirstLevel" SHALL be appended to the [children] of the
<components> element item.
An element item with the [local name] "in" SHALL be appended to the
[children] of the <components> element item. The translation of the
TypeIdentification in the IdentifiersInContext instance SHALL be
added to the [children] and/or [attributes] of the <in> element item.
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Example
Assume this type assignment:
MyType ::= SEQUENCE {
field INTEGER,
fieldAtt [RXER:NAME AS "field"][RXER:ATTRIBUTE] BOOLEAN
}
field, fieldAtt IN MyType
<target>
<components>
<element name="field"/>
<attribute name="field"/>
<in type="MyType"/>
</components>
</target>
<span class="h2"><a class="selflink" id="section-7" href="#section-7">7</a>. Security Considerations</span>
The ASN.X translation of an XER encoding instruction is semantically
equivalent to the original XER encoding instruction. The security
considerations that apply to an application built from an original
ASN.1 specification with XER encoding instructions apply equally to
an application built from the ASN.X translation of the ASN.1
specification.
See the main specification for ASN.X [<a href="#ref-ASN.X" title=""Abstract Syntax Notation X (ASN.X)"">ASN.X</a>] for security
considerations related to ASN.X modules.
<span class="h2"><a class="selflink" id="section-8" href="#section-8">8</a>. References</span>
<span class="h3"><a class="selflink" id="section-8.1" href="#section-8.1">8.1</a>. Normative References</span>
[<a id="ref-BCP14">BCP14</a>] Bradner, S., "Key words for use in RFCs to Indicate
Requirement Levels", <a href="https://www.rfc-editor.org/bcp/bcp14">BCP 14</a>, <a href="./rfc2119">RFC 2119</a>, March 1997.
[<a id="ref-URI">URI</a>] Berners-Lee, T., Fielding, R. and L. Masinter, "Uniform
Resource Identifiers (URI): Generic Syntax", STD 66, <a href="./rfc3986">RFC</a>
<a href="./rfc3986">3986</a>, January 2005.
[<a id="ref-RXER">RXER</a>] Legg, S. and D. Prager, "Robust XML Encoding Rules (RXER)
for Abstract Syntax Notation One (ASN.1)", <a href="./rfc4910">RFC 4910</a>, July
2007.
[<a id="ref-RXEREI">RXEREI</a>] Legg, S., "Encoding Instructions for the Robust XML
Encoding Rules (RXER)", <a href="./rfc4911">RFC 4911</a>, July 2007.
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[<a id="ref-ASN.X">ASN.X</a>] Legg, S., "Abstract Syntax Notation X (ASN.X)", <a href="./rfc4912">RFC 4912</a>,
July 2007.
[<a id="ref-X.680">X.680</a>] ITU-T Recommendation X.680 (07/02) | ISO/IEC 8824-1,
Information technology - Abstract Syntax Notation One
(ASN.1): Specification of basic notation.
[<a id="ref-X.680-1">X.680-1</a>] ITU-T Recommendation X.680 (2002) Amendment 1 (10/03) |
ISO/IEC 8824-1:2002/Amd 1:2004, Support for EXTENDED-XER.
[<a id="ref-X.693-1">X.693-1</a>] Amendment 1: (to ITU-T Rec. X.693 | ISO/IEC 8825-4) XER
encoding instructions and EXTENDED-XER.
[<a id="ref-XML10">XML10</a>] Bray, T., Paoli, J., Sperberg-McQueen, C., Maler, E. and
F. Yergeau, "Extensible Markup Language (XML) 1.0 (Fourth
Edition)", W3C Recommendation,
<a href="http://www.w3.org/TR/2006/REC-xml-20060816">http://www.w3.org/TR/2006/REC-xml-20060816</a>, August 2006.
[<a id="ref-XML11">XML11</a>] Bray, T., Paoli, J., Sperberg-McQueen, C., Maler, E.,
Yergeau, F., and J. Cowan, "Extensible Markup Language
(XML) 1.1 (Second Edition)", W3C Recommendation,
<a href="http://www.w3.org/TR/2006/REC-xml11-20060816">http://www.w3.org/TR/2006/REC-xml11-20060816</a>, August 2006.
[<a id="ref-XMLNS10">XMLNS10</a>] Bray, T., Hollander, D., Layman, A., and R. Tobin,
"Namespaces in XML 1.0 (Second Edition)", W3C
Recommendation,
<a href="http://www.w3.org/TR/2006/REC-xml-names-20060816">http://www.w3.org/TR/2006/REC-xml-names-20060816</a>, August
2006.
[<a id="ref-INFOSET">INFOSET</a>] Cowan, J. and R. Tobin, "XML Information Set (Second
Edition)", W3C Recommendation,
<a href="http://www.w3.org/TR/2004/REC-xml-infoset-20040204">http://www.w3.org/TR/2004/REC-xml-infoset-20040204</a>,
February 2004.
[<a id="ref-UNICODE">UNICODE</a>] The Unicode Consortium, "The Unicode Standard, Version
4.0", Boston, MA, Addison-Wesley Developers Press, 2003.
ISBN 0-321-18578-1.
<span class="h3"><a class="selflink" id="section-8.2" href="#section-8.2">8.2</a>. Informative References</span>
[<a id="ref-X.693">X.693</a>] ITU-T Recommendation X.693 (12/01) | ISO/IEC 8825-4:2002,
Information technology - ASN.1 encoding rules: XML
encoding rules (XER).
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<span class="h2"><a class="selflink" id="appendix-A" href="#appendix-A">Appendix A</a>. ASN.1 for XER Encoding Instruction Notation</span>
This appendix is normative.
XER-EncodingInstructionNotation
{ iso(1) identified-organization(3) dod(6)
internet(1) private(4) enterprise(1)
xmled(21472) asnx(1) module(0) xer-ei-notation(3) }
-- Copyright (C) The IETF Trust (2007). This version of
-- this ASN.1 module is part of <a href="./rfc4914">RFC 4914</a>; see the RFC itself
-- for full legal notices.
--
-- Regarding this ASN.1 module or any portion of it, the author
-- makes no guarantees and is not responsible for any damage
-- resulting from its use. The author grants irrevocable permission
-- to anyone to use, modify, and distribute it in any way that does
-- not diminish the rights of anyone else to use, modify, and
-- distribute it, provided that redistributed derivative works do
-- not contain misleading author or version information.
-- Derivative works need not be licensed under similar terms.
DEFINITIONS
RXER INSTRUCTIONS
AUTOMATIC TAGS
EXTENSIBILITY IMPLIED ::= BEGIN
IMPORTS
AnyURI,
NCName
FROM AdditionalBasicDefinitions
{ iso(1) identified-organization(3) dod(6)
internet(1) private(4) enterprise(1)
xmled(21472) asnx(1) module(0) basic(0) }
Annotation,
Value
FROM AbstractSyntaxNotation-X
{ iso(1) identified-organization(3) dod(6)
internet(1) private(4) enterprise(1)
xmled(21472) asnx(1) module(0) notation(1) }
TargetList
FROM TargetListNotation
{ iso(1) identified-organization(3) dod(6)
internet(1) private(4) enterprise(1)
xmled(21472) asnx(1) module(0)
target-list-notation(4) }
;
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XER-EncodingInstructionAssignmentList ::= SEQUENCE {
annotation Annotation OPTIONAL,
instructions [GROUP] XER-TargettedEncodingInstructions
}
XER-TargettedEncodingInstructions ::= SEQUENCE SIZE (1..MAX) OF
targettedInstruction XER-TargettedEncodingInstruction
XER-TargettedEncodingInstruction ::= SEQUENCE {
instruction [GROUP] XER-GeneralEncodingInstruction,
targetList [GROUP] TargetList OPTIONAL
}
XER-EncodingInstruction ::= XER-GeneralEncodingInstruction
(WITH COMPONENTS { ..., globalDefaults ABSENT })
XER-GeneralEncodingInstruction ::= [SINGULAR-INSERTIONS] CHOICE {
anyAttributes XER-WildcardInstruction,
not-anyAttributes XER-NegatingInstruction,
anyElement XER-WildcardInstruction,
not-anyElement XER-NegatingInstruction,
attribute XER-SimpleInstruction,
not-attribute XER-NegatingInstruction,
base64 XER-SimpleInstruction,
not-base64 XER-NegatingInstruction,
decimal XER-SimpleInstruction,
not-decimal XER-NegatingInstruction,
defaultForEmpty XER-DefaultForEmptyInstruction,
not-defaultForEmpty XER-NegatingInstruction,
embedValues XER-SimpleInstruction,
not-embedValues XER-NegatingInstruction,
globalDefaults XER-GlobalDefaultsInstruction,
list XER-SimpleInstruction,
not-list XER-NegatingInstruction,
name XER-NameInstruction,
not-name XER-NegatingInstruction,
namespace XER-NamespaceInstruction,
not-namespace XER-NegatingInstruction,
piOrComment XER-PIOrCommentInstruction,
not-piOrComment XER-NegatingInstruction,
text XER-TextInstruction,
not-text XER-NegatingInstruction,
untagged XER-SimpleInstruction,
not-untagged XER-NegatingInstruction,
element XER-NegatingInstruction,
useNil XER-SimpleInstruction,
not-useNil XER-NegatingInstruction,
useNumber XER-SimpleInstruction,
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not-useNumber XER-NegatingInstruction,
useOrder XER-SimpleInstruction,
not-useOrder XER-NegatingInstruction,
useQName XER-SimpleInstruction,
not-useQName XER-NegatingInstruction,
useType XER-SimpleInstruction,
not-useType XER-NegatingInstruction,
useUnion XER-SimpleInstruction,
not-useUnion XER-NegatingInstruction,
whiteSpace XER-WhiteSpaceInstruction,
not-whiteSpace XER-NegatingInstruction
}
XER-SimpleInstruction ::= SEQUENCE { }
XER-NegatingInstruction ::= XER-SimpleInstruction
XER-WildcardInstruction ::= SEQUENCE {
namespaceRestriction [GROUP] XER-NamespaceRestriction OPTIONAL
}
XER-NamespaceRestriction ::= [NO-INSERTIONS] CHOICE {
from XER-URIList,
except XER-URIList
}
XER-URIList ::= SEQUENCE SIZE(1..MAX) OF
uriOrAbsent [GROUP] XER-QuotedURIorAbsent
XER-QuotedURIorAbsent ::= [SINGULAR-INSERTIONS] CHOICE {
namespace AnyURI,
local NULL
}
XER-DefaultForEmptyInstruction ::= SEQUENCE {
value [GROUP] Value
}
XER-GlobalDefaultsInstruction ::= SEQUENCE {
defaultSetting [GROUP] [SINGULAR-INSERTIONS] CHOICE {
modifiedEncodings NULL,
controlNamespace XER-ControlNamespace
}
}
XER-ControlNamespace ::= SEQUENCE {
name [ATTRIBUTE] AnyURI,
prefix [ATTRIBUTE] NCName OPTIONAL
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}
XER-NameInstruction ::= SEQUENCE {
newNameOrKeyword [GROUP] XER-NewNameOrKeyword
}
XER-NewNameOrKeyword ::= [NO-INSERTIONS] CHOICE {
newName [ATTRIBUTE] UTF8String,
conversion [ATTRIBUTE] XER-Conversion
}
XER-Conversion ::= ENUMERATED {
capitalized (0),
uncapitalized (1),
uppercased (2),
lowercased (3)
}
XER-NamespaceInstruction ::= SEQUENCE {
namespace [GROUP] XER-NamespaceSpecification OPTIONAL
}
XER-NamespaceSpecification ::= [HOLLOW-INSERTIONS] SEQUENCE {
name [ATTRIBUTE] AnyURI,
prefix [ATTRIBUTE] NCName OPTIONAL
}
XER-PIOrCommentInstruction ::= SEQUENCE {
text [ATTRIBUTE] UTF8String,
position [ATTRIBUTE] XER-Position
}
XER-Position ::= ENUMERATED {
beforeTag (0),
beforeValue (1),
afterValue (2),
afterTag (3)
}
XER-TextInstruction ::= SEQUENCE {
newNameOrKeyword [GROUP] XER-NewNameOrKeyword OPTIONAL
}
XER-WhiteSpaceInstruction ::= SEQUENCE {
action [ATTRIBUTE] XER-WhiteSpaceAction
}
XER-WhiteSpaceAction ::= ENUMERATED {
<span class="grey">Legg Experimental [Page 23]</span><span id="page-24" ></span>
<span class="grey"><a href="./rfc4914">RFC 4914</a> ASN.X: XER Encoding Instructions July 2007</span>
replace (0),
collapse (1)
}
ENCODING-CONTROL RXER
SCHEMA-IDENTITY "urn:oid:1.3.6.1.4.1.21472.1.0.3"
TARGET-NAMESPACE "urn:ietf:params:xml:ns:asnx" PREFIX "asnx"
END
<span class="h2"><a class="selflink" id="appendix-B" href="#appendix-B">Appendix B</a>. ASN.1 for Target List Notation</span>
This appendix is normative.
TargetListNotation
{ iso(1) identified-organization(3) dod(6)
internet(1) private(4) enterprise(1)
xmled(21472) asnx(1) module(0) target-list-notation(4) }
-- Copyright (C) The IETF Trust (2007). This version of
-- this ASN.1 module is part of <a href="./rfc4914">RFC 4914</a>; see the RFC itself
-- for full legal notices.
--
-- Regarding this ASN.1 module or any portion of it, the author
-- makes no guarantees and is not responsible for any damage
-- resulting from its use. The author grants irrevocable permission
-- to anyone to use, modify, and distribute it in any way that does
-- not diminish the rights of anyone else to use, modify, and
-- distribute it, provided that redistributed derivative works do
-- not contain misleading author or version information.
-- Derivative works need not be licensed under similar terms.
DEFINITIONS
RXER INSTRUCTIONS
AUTOMATIC TAGS
EXTENSIBILITY IMPLIED ::= BEGIN
IMPORTS
Markup,
NCName,
QName
FROM AdditionalBasicDefinitions
{ iso(1) identified-organization(3) dod(6)
internet(1) private(4) enterprise(1)
xmled(21472) asnx(1) module(0) basic(0) }
;
<span class="grey">Legg Experimental [Page 24]</span><span id="page-25" ></span>
<span class="grey"><a href="./rfc4914">RFC 4914</a> ASN.X: XER Encoding Instructions July 2007</span>
TargetList ::= SEQUENCE SIZE (1..MAX) OF target Targets
Targets ::= [NO-INSERTIONS] CHOICE {
allTypes NULL,
identifiedTypes [GROUP] QualifiedTypeIdentification,
components IdentifiersInContext,
allImportsFrom SEQUENCE { }
-- allImportsFrom is not used in this version
}
-- TypeIdentification and BuiltInTypeIdentification
QualifiedTypeIdentification ::= [HOLLOW-INSERTIONS] SEQUENCE {
types [GROUP] [SINGULAR-INSERTIONS] CHOICE {
specificType [GROUP] SpecificTypeIdentification,
choice NULL,
enumerated NULL,
instanceOf NULL,
sequence NULL,
sequenceOf NULL,
set NULL,
setOf NULL
},
qualification [GROUP] QualifyingInformationPart OPTIONAL
}
SpecificTypeIdentification ::= [HOLLOW-INSERTIONS] SEQUENCE {
type [ATTRIBUTE] QName,
component Markup OPTIONAL,
allTextuallyPresent NULL OPTIONAL
}
QualifyingInformationPart ::= [NO-INSERTIONS] CHOICE {
allIdentifiers NULL,
identifier SEQUENCE {
name [ATTRIBUTE] NCName
}
}
IdentifiersInContext ::= SEQUENCE {
identifiers [GROUP] IdentifierList,
in CHOICE {
allTypes NULL,
specificType [GROUP] SpecificTypeIdentification
}
}
IdentifierList ::= [NO-INSERTIONS] CHOICE {
list [GROUP] IdentifiedComponents,
<span class="grey">Legg Experimental [Page 25]</span><span id="page-26" ></span>
<span class="grey"><a href="./rfc4914">RFC 4914</a> ASN.X: XER Encoding Instructions July 2007</span>
allTextuallyPresent NULL,
allFirstLevel NULL
}
IdentifiedComponents ::= SEQUENCE SIZE (1..MAX) OF
identifiedComponent [GROUP] IdentifiedComponent
IdentifiedComponent ::= [SINGULAR-INSERTIONS] CHOICE {
component GenericIdentifiedComponent,
element GenericIdentifiedComponent,
attribute GenericIdentifiedComponent,
group GenericIdentifiedComponent,
member GenericIdentifiedComponent,
item GenericIdentifiedComponent,
simpleContent GenericIdentifiedComponent
}
GenericIdentifiedComponent ::= SEQUENCE {
name [ATTRIBUTE] QName
}
ENCODING-CONTROL RXER
SCHEMA-IDENTITY "urn:oid:1.3.6.1.4.1.21472.1.0.4"
TARGET-NAMESPACE "urn:ietf:params:xml:ns:asnx" PREFIX "tln"
END
<span class="h2"><a class="selflink" id="appendix-C" href="#appendix-C">Appendix C</a>. ASN.X for XER Encoding Instruction Notation</span>
This appendix is non-normative.
<?xml version="1.0"?>
<asnx:module xmlns:asnx="urn:ietf:params:xml:ns:asnx"
xmlns:tln="urn:ietf:params:xml:ns:asnx"
name="XER-EncodingInstructionNotation"
identifier="1.3.6.1.4.1.21472.1.0.3"
schemaIdentity="urn:oid:1.3.6.1.4.1.21472.1.0.3"
targetNamespace="urn:ietf:params:xml:ns:asnx"
targetPrefix="asnx"
extensibilityImplied="true">
<annotation>
Copyright (C) The IETF Trust (2007). This version of
this ASN.X module is part of <a href="./rfc4914">RFC 4914</a>; see the RFC itself
for full legal notices.
Regarding this ASN.X module or any portion of it, the author
<span class="grey">Legg Experimental [Page 26]</span><span id="page-27" ></span>
<span class="grey"><a href="./rfc4914">RFC 4914</a> ASN.X: XER Encoding Instructions July 2007</span>
makes no guarantees and is not responsible for any damage
resulting from its use. The author grants irrevocable permission
to anyone to use, modify, and distribute it in any way that does
not diminish the rights of anyone else to use, modify, and
distribute it, provided that redistributed derivative works do
not contain misleading author or version information.
Derivative works need not be licensed under similar terms.
</annotation>
<import name="AbstractSyntaxNotation-X"
identifier="1.3.6.1.4.1.21472.1.0.1"
schemaIdentity="urn:oid:1.3.6.1.4.1.21472.1.0.1"
namespace="urn:ietf:params:xml:ns:asnx"/>
<import name="TargetListNotation"
identifier="1.3.6.1.4.1.21472.1.0.4"
schemaIdentity="urn:oid:1.3.6.1.4.1.21472.1.0.4"
namespace="urn:ietf:params:xml:ns:asnx"/>
<namedType name="XER-EncodingInstructionAssignmentList">
<type>
<sequence>
<optional>
<element name="annotation" type="asnx:Annotation"/>
</optional>
<group name="instructions"
type="asnx:XER-TargettedEncodingInstructions"/>
</sequence>
</type>
</namedType>
<namedType name="XER-TargettedEncodingInstructions">
<type>
<sequenceOf minSize="1">
<element name="targettedInstruction"
type="asnx:XER-TargettedEncodingInstruction"/>
</sequenceOf>
</type>
</namedType>
<namedType name="XER-TargettedEncodingInstruction">
<type>
<sequence>
<group name="instruction"
type="asnx:XER-GeneralEncodingInstruction"/>
<optional>
<group name="targetList" type="tln:TargetList"/>
</optional>
<span class="grey">Legg Experimental [Page 27]</span><span id="page-28" ></span>
<span class="grey"><a href="./rfc4914">RFC 4914</a> ASN.X: XER Encoding Instructions July 2007</span>
</sequence>
</type>
</namedType>
<namedType name="XER-EncodingInstruction">
<type>
<constrained type="asnx:XER-GeneralEncodingInstruction">
<withComponents partial="true">
<element name="globalDefaults" use="absent"/>
</withComponents>
</constrained>
</type>
</namedType>
<namedType name="XER-GeneralEncodingInstruction">
<type>
<choice insertions="singular">
<element name="anyAttributes"
type="asnx:XER-WildcardInstruction"/>
<element name="not-anyAttributes"
type="asnx:XER-NegatingInstruction"/>
<element name="anyElement" type="asnx:XER-WildcardInstruction"/>
<element name="not-anyElement"
type="asnx:XER-NegatingInstruction"/>
<element name="attribute" type="asnx:XER-SimpleInstruction"/>
<element name="not-attribute"
type="asnx:XER-NegatingInstruction"/>
<element name="base64" type="asnx:XER-SimpleInstruction"/>
<element name="not-base64" type="asnx:XER-NegatingInstruction"/>
<element name="decimal" type="asnx:XER-SimpleInstruction"/>
<element name="not-decimal" type="asnx:XER-NegatingInstruction"/>
<element name="defaultForEmpty"
type="asnx:XER-DefaultForEmptyInstruction"/>
<element name="not-defaultForEmpty"
type="asnx:XER-NegatingInstruction"/>
<element name="embedValues" type="asnx:XER-SimpleInstruction"/>
<element name="not-embedValues"
type="asnx:XER-NegatingInstruction"/>
<element name="globalDefaults"
type="asnx:XER-GlobalDefaultsInstruction"/>
<element name="list" type="asnx:XER-SimpleInstruction"/>
<element name="not-list" type="asnx:XER-NegatingInstruction"/>
<element name="name" type="asnx:XER-NameInstruction"/>
<element name="not-name" type="asnx:XER-NegatingInstruction"/>
<element name="namespace" type="asnx:XER-NamespaceInstruction"/>
<element name="not-namespace"
type="asnx:XER-NegatingInstruction"/>
<element name="piOrComment"
<span class="grey">Legg Experimental [Page 28]</span><span id="page-29" ></span>
<span class="grey"><a href="./rfc4914">RFC 4914</a> ASN.X: XER Encoding Instructions July 2007</span>
type="asnx:XER-PIOrCommentInstruction"/>
<element name="not-piOrComment"
type="asnx:XER-NegatingInstruction"/>
<element name="text" type="asnx:XER-TextInstruction"/>
<element name="not-text" type="asnx:XER-NegatingInstruction"/>
<element name="untagged" type="asnx:XER-SimpleInstruction"/>
<element name="not-untagged"
type="asnx:XER-NegatingInstruction"/>
<element name="element" type="asnx:XER-NegatingInstruction"/>
<element name="useNil" type="asnx:XER-SimpleInstruction"/>
<element name="not-useNil" type="asnx:XER-NegatingInstruction"/>
<element name="useNumber" type="asnx:XER-SimpleInstruction"/>
<element name="not-useNumber"
type="asnx:XER-NegatingInstruction"/>
<element name="useOrder" type="asnx:XER-SimpleInstruction"/>
<element name="not-useOrder"
type="asnx:XER-NegatingInstruction"/>
<element name="useQName" type="asnx:XER-SimpleInstruction"/>
<element name="not-useQName"
type="asnx:XER-NegatingInstruction"/>
<element name="useType" type="asnx:XER-SimpleInstruction"/>
<element name="not-useType" type="asnx:XER-NegatingInstruction"/>
<element name="useUnion" type="asnx:XER-SimpleInstruction"/>
<element name="not-useUnion"
type="asnx:XER-NegatingInstruction"/>
<element name="whiteSpace"
type="asnx:XER-WhiteSpaceInstruction"/>
<element name="not-whiteSpace"
type="asnx:XER-NegatingInstruction"/>
</choice>
</type>
</namedType>
<namedType name="XER-SimpleInstruction">
<type>
<sequence/>
</type>
</namedType>
<namedType name="XER-NegatingInstruction"
type="asnx:XER-SimpleInstruction"/>
<namedType name="XER-WildcardInstruction">
<type>
<sequence>
<optional>
<group name="namespaceRestriction"
type="asnx:XER-NamespaceRestriction"/>
<span class="grey">Legg Experimental [Page 29]</span><span id="page-30" ></span>
<span class="grey"><a href="./rfc4914">RFC 4914</a> ASN.X: XER Encoding Instructions July 2007</span>
</optional>
</sequence>
</type>
</namedType>
<namedType name="XER-NamespaceRestriction">
<type>
<choice insertions="none">
<element name="from" type="asnx:XER-URIList"/>
<element name="except" type="asnx:XER-URIList"/>
</choice>
</type>
</namedType>
<namedType name="XER-URIList">
<type>
<sequenceOf minSize="1">
<group name="uriOrAbsent" type="asnx:XER-QuotedURIorAbsent"/>
</sequenceOf>
</type>
</namedType>
<namedType name="XER-QuotedURIorAbsent">
<type>
<choice insertions="singular">
<element name="namespace" type="asnx:AnyURI"/>
<element name="local" type="asnx:NULL"/>
</choice>
</type>
</namedType>
<namedType name="XER-DefaultForEmptyInstruction">
<type>
<sequence>
<group name="value" type="asnx:Value"/>
</sequence>
</type>
</namedType>
<namedType name="XER-GlobalDefaultsInstruction">
<type>
<sequence>
<group name="defaultSetting">
<type>
<choice insertions="singular">
<element name="modifiedEncodings" type="asnx:NULL"/>
<element name="controlNamespace"
type="asnx:XER-ControlNamespace"/>
<span class="grey">Legg Experimental [Page 30]</span><span id="page-31" ></span>
<span class="grey"><a href="./rfc4914">RFC 4914</a> ASN.X: XER Encoding Instructions July 2007</span>
</choice>
</type>
</group>
</sequence>
</type>
</namedType>
<namedType name="XER-ControlNamespace">
<type>
<sequence>
<attribute name="name" type="asnx:AnyURI"/>
<optional>
<attribute name="prefix" type="asnx:NCName"/>
</optional>
</sequence>
</type>
</namedType>
<namedType name="XER-NameInstruction">
<type>
<sequence>
<group name="newNameOrKeyword" type="asnx:XER-NewNameOrKeyword"/>
</sequence>
</type>
</namedType>
<namedType name="XER-NewNameOrKeyword">
<type>
<choice insertions="none">
<attribute name="newName" type="asnx:UTF8String"/>
<attribute name="conversion" type="asnx:XER-Conversion"/>
</choice>
</type>
</namedType>
<namedType name="XER-Conversion">
<type>
<enumerated>
<enumeration name="capitalized" number="0"/>
<enumeration name="uncapitalized" number="1"/>
<enumeration name="uppercased" number="2"/>
<enumeration name="lowercased" number="3"/>
</enumerated>
</type>
</namedType>
<namedType name="XER-NamespaceInstruction">
<type>
<span class="grey">Legg Experimental [Page 31]</span><span id="page-32" ></span>
<span class="grey"><a href="./rfc4914">RFC 4914</a> ASN.X: XER Encoding Instructions July 2007</span>
<sequence>
<optional>
<group name="namespace" type="asnx:XER-NamespaceSpecification"/>
</optional>
</sequence>
</type>
</namedType>
<namedType name="XER-NamespaceSpecification">
<type>
<sequence insertions="hollow">
<attribute name="name" type="asnx:AnyURI"/>
<optional>
<attribute name="prefix" type="asnx:NCName"/>
</optional>
</sequence>
</type>
</namedType>
<namedType name="XER-PIOrCommentInstruction">
<type>
<sequence>
<attribute name="text" type="asnx:UTF8String"/>
<attribute name="position" type="asnx:XER-Position"/>
</sequence>
</type>
</namedType>
<namedType name="XER-Position">
<type>
<enumerated>
<enumeration name="beforeTag" number="0"/>
<enumeration name="beforeValue" number="1"/>
<enumeration name="afterValue" number="2"/>
<enumeration name="afterTag" number="3"/>
</enumerated>
</type>
</namedType>
<namedType name="XER-TextInstruction">
<type>
<sequence>
<optional>
<group name="newNameOrKeyword"
type="asnx:XER-NewNameOrKeyword"/>
</optional>
</sequence>
</type>
<span class="grey">Legg Experimental [Page 32]</span><span id="page-33" ></span>
<span class="grey"><a href="./rfc4914">RFC 4914</a> ASN.X: XER Encoding Instructions July 2007</span>
</namedType>
<namedType name="XER-WhiteSpaceInstruction">
<type>
<sequence>
<attribute name="action" type="asnx:XER-WhiteSpaceAction"/>
</sequence>
</type>
</namedType>
<namedType name="XER-WhiteSpaceAction">
<type>
<enumerated>
<enumeration name="replace" number="0"/>
<enumeration name="collapse" number="1"/>
</enumerated>
</type>
</namedType>
</asnx:module>
<span class="h2"><a class="selflink" id="appendix-D" href="#appendix-D">Appendix D</a>. ASN.X for Target List Notation</span>
This appendix is non-normative.
<?xml version="1.0"?>
<asnx:module xmlns:asnx="urn:ietf:params:xml:ns:asnx"
xmlns:tln="urn:ietf:params:xml:ns:asnx"
name="TargetListNotation"
identifier="1.3.6.1.4.1.21472.1.0.4"
schemaIdentity="urn:oid:1.3.6.1.4.1.21472.1.0.4"
targetNamespace="urn:ietf:params:xml:ns:asnx"
targetPrefix="tln"
extensibilityImplied="true">
<annotation>
Copyright (C) The IETF Trust (2007). This version of
this ASN.X module is part of <a href="./rfc4914">RFC 4914</a>; see the RFC itself
for full legal notices.
Regarding this ASN.X module or any portion of it, the author
makes no guarantees and is not responsible for any damage
resulting from its use. The author grants irrevocable permission
to anyone to use, modify, and distribute it in any way that does
not diminish the rights of anyone else to use, modify, and
distribute it, provided that redistributed derivative works do
not contain misleading author or version information.
Derivative works need not be licensed under similar terms.
<span class="grey">Legg Experimental [Page 33]</span><span id="page-34" ></span>
<span class="grey"><a href="./rfc4914">RFC 4914</a> ASN.X: XER Encoding Instructions July 2007</span>
</annotation>
<namedType name="TargetList">
<type>
<sequenceOf minSize="1">
<element name="target" type="tln:Targets"/>
</sequenceOf>
</type>
</namedType>
<namedType name="Targets">
<type>
<choice insertions="none">
<element name="allTypes" type="asnx:NULL"/>
<group name="identifiedTypes"
type="tln:QualifiedTypeIdentification"/>
<element name="components" type="tln:IdentifiersInContext"/>
<element name="allImportsFrom">
<annotation>
allImportsFrom is not used in this version
</annotation>
<type>
<sequence/>
</type>
</element>
</choice>
</type>
</namedType>
<namedType name="QualifiedTypeIdentification">
<annotation>
TypeIdentification and BuiltInTypeIdentification
</annotation>
<type>
<sequence insertions="hollow">
<group name="types">
<type>
<choice insertions="singular">
<group name="specificType"
type="tln:SpecificTypeIdentification"/>
<element name="choice" type="asnx:NULL"/>
<element name="enumerated" type="asnx:NULL"/>
<element name="instanceOf" type="asnx:NULL"/>
<element name="sequence" type="asnx:NULL"/>
<element name="sequenceOf" type="asnx:NULL"/>
<element name="set" type="asnx:NULL"/>
<element name="setOf" type="asnx:NULL"/>
</choice>
<span class="grey">Legg Experimental [Page 34]</span><span id="page-35" ></span>
<span class="grey"><a href="./rfc4914">RFC 4914</a> ASN.X: XER Encoding Instructions July 2007</span>
</type>
</group>
<optional>
<group name="qualification"
type="tln:QualifyingInformationPart"/>
</optional>
</sequence>
</type>
</namedType>
<namedType name="SpecificTypeIdentification">
<type>
<sequence insertions="hollow">
<attribute name="type" type="asnx:QName"/>
<optional>
<element name="component" type="asnx:Markup"/>
</optional>
<optional>
<element name="allTextuallyPresent" type="asnx:NULL"/>
</optional>
</sequence>
</type>
</namedType>
<namedType name="QualifyingInformationPart">
<type>
<choice insertions="none">
<element name="allIdentifiers" type="asnx:NULL"/>
<element name="identifier">
<type>
<sequence>
<attribute name="name" type="asnx:NCName"/>
</sequence>
</type>
</element>
</choice>
</type>
</namedType>
<namedType name="IdentifiersInContext">
<type>
<sequence>
<group name="identifiers" type="tln:IdentifierList"/>
<element name="in">
<type>
<choice>
<element name="allTypes" type="asnx:NULL"/>
<group name="specificType"
<span class="grey">Legg Experimental [Page 35]</span><span id="page-36" ></span>
<span class="grey"><a href="./rfc4914">RFC 4914</a> ASN.X: XER Encoding Instructions July 2007</span>
type="tln:SpecificTypeIdentification"/>
</choice>
</type>
</element>
</sequence>
</type>
</namedType>
<namedType name="IdentifierList">
<type>
<choice insertions="none">
<group name="list" type="tln:IdentifiedComponents"/>
<element name="allTextuallyPresent" type="asnx:NULL"/>
<element name="allFirstLevel" type="asnx:NULL"/>
</choice>
</type>
</namedType>
<namedType name="IdentifiedComponents">
<type>
<sequenceOf minSize="1">
<group name="identifiedComponent"
type="tln:IdentifiedComponent"/>
</sequenceOf>
</type>
</namedType>
<namedType name="IdentifiedComponent">
<type>
<choice insertions="singular">
<element name="component" type="tln:GenericIdentifiedComponent"/>
<element name="element" type="tln:GenericIdentifiedComponent"/>
<element name="attribute" type="tln:GenericIdentifiedComponent"/>
<element name="group" type="tln:GenericIdentifiedComponent"/>
<element name="member" type="tln:GenericIdentifiedComponent"/>
<element name="item" type="tln:GenericIdentifiedComponent"/>
<element name="simpleContent"
type="tln:GenericIdentifiedComponent"/>
</choice>
</type>
</namedType>
<namedType name="GenericIdentifiedComponent">
<type>
<sequence>
<attribute name="name" type="asnx:QName"/>
</sequence>
</type>
<span class="grey">Legg Experimental [Page 36]</span><span id="page-37" ></span>
<span class="grey"><a href="./rfc4914">RFC 4914</a> ASN.X: XER Encoding Instructions July 2007</span>
</namedType>
</asnx:module>
Author's Address
Dr. Steven Legg
eB2Bcom
Suite 3, Woodhouse Corporate Centre
935 Station Street
Box Hill North, Victoria 3129
AUSTRALIA
Phone: +61 3 9896 7830
Fax: +61 3 9896 7801
EMail: [email protected]
<span class="grey">Legg Experimental [Page 37]</span><span id="page-38" ></span>
<span class="grey"><a href="./rfc4914">RFC 4914</a> ASN.X: XER Encoding Instructions July 2007</span>
Full Copyright Statement
Copyright (C) The IETF Trust (2007).
This document is subject to the rights, licenses and restrictions
contained in <a href="https://www.rfc-editor.org/bcp/bcp78">BCP 78</a>, and except as set forth therein, the authors
retain all their rights.
This document and the information contained herein are provided on an
"AS IS" basis and THE CONTRIBUTOR, THE ORGANIZATION HE/SHE REPRESENTS
OR IS SPONSORED BY (IF ANY), THE INTERNET SOCIETY, THE IETF TRUST AND
THE INTERNET ENGINEERING TASK FORCE DISCLAIM 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.
Intellectual Property
The IETF takes no position regarding the validity or scope of any
Intellectual Property Rights or other rights that might be claimed to
pertain to the implementation or use of the technology described in
this document or the extent to which any license under such rights
might or might not be available; nor does it represent that it has
made any independent effort to identify any such rights. Information
on the procedures with respect to rights in RFC documents can be
found in <a href="https://www.rfc-editor.org/bcp/bcp78">BCP 78</a> and <a href="https://www.rfc-editor.org/bcp/bcp79">BCP 79</a>.
Copies of IPR disclosures made to the IETF Secretariat and any
assurances of licenses to be made available, or the result of an
attempt made to obtain a general license or permission for the use of
such proprietary rights by implementers or users of this
specification can be obtained from the IETF on-line IPR repository at
<a href="http://www.ietf.org/ipr">http://www.ietf.org/ipr</a>.
The IETF invites any interested party to bring to its attention any
copyrights, patents or patent applications, or other proprietary
rights that may cover technology that may be required to implement
this standard. Please address the information to the IETF at
[email protected].
Acknowledgement
Funding for the RFC Editor function is currently provided by the
Internet Society.
Legg Experimental [Page 38]
Annotations
Select text to annotate