Encoding Instructions for the Robust XML Encoding Rules (RXER)
RFC 4911
| Document | Type |
RFC - Experimental
(July 2007; No errata)
Was draft-legg-xed-rxer-ei (individual in app area)
|
|
|---|---|---|---|
| Last updated | 2015-10-14 | ||
| Stream | IETF | ||
| Formats | plain text pdf html bibtex | ||
| Stream | WG state | (None) | |
| Document shepherd | No shepherd assigned | ||
| IESG | IESG state | RFC 4911 (Experimental) | |
| Consensus Boilerplate | Unknown | ||
| Telechat date | |||
| Responsible AD | Ted Hardie | ||
| Send notices to | (None) | ||
Network Working Group S. Legg
Request for Comments: 4911 eB2Bcom
Category: Experimental July 2007
Encoding Instructions for the
Robust XML Encoding Rules (RXER)
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
This document defines encoding instructions that may be used in an
Abstract Syntax Notation One (ASN.1) specification to alter how ASN.1
values are encoded by the Robust XML Encoding Rules (RXER) and
Canonical Robust XML Encoding Rules (CRXER), for example, to encode a
component of an ASN.1 value as an Extensible Markup Language (XML)
attribute rather than as a child element. Some of these encoding
instructions also affect how an ASN.1 specification is translated
into an Abstract Syntax Notation X (ASN.X) specification. Encoding
instructions that allow an ASN.1 specification to reference
definitions in other XML schema languages are also defined.
Legg Experimental [Page 1]
RFC 4911 Encoding Instructions for RXER July 2007
Table of Contents
1. Introduction ....................................................3
2. Conventions .....................................................3
3. Definitions .....................................................4
4. Notation for RXER Encoding Instructions .........................4
5. Component Encoding Instructions .................................6
6. Reference Encoding Instructions .................................8
7. Expanded Names of Components ...................................10
8. The ATTRIBUTE Encoding Instruction .............................11
9. The ATTRIBUTE-REF Encoding Instruction .........................12
10. The COMPONENT-REF Encoding Instruction ........................13
11. The ELEMENT-REF Encoding Instruction ..........................16
12. The LIST Encoding Instruction .................................17
13. The NAME Encoding Instruction .................................19
14. The REF-AS-ELEMENT Encoding Instruction .......................19
15. The REF-AS-TYPE Encoding Instruction ..........................20
16. The SCHEMA-IDENTITY Encoding Instruction ......................22
17. The SIMPLE-CONTENT Encoding Instruction .......................22
18. The TARGET-NAMESPACE Encoding Instruction .....................23
19. The TYPE-AS-VERSION Encoding Instruction ......................24
20. The TYPE-REF Encoding Instruction .............................25
21. The UNION Encoding Instruction ................................26
22. The VALUES Encoding Instruction ...............................27
23. Insertion Encoding Instructions ...............................29
24. The VERSION-INDICATOR Encoding Instruction ....................32
25. The GROUP Encoding Instruction ................................34
25.1. Unambiguous Encodings ....................................36
25.1.1. Grammar Construction ..............................37
25.1.2. Unique Component Attribution ......................47
25.1.3. Deterministic Grammars ............................52
25.1.4. Attributes in Unknown Extensions ..................54
26. Security Considerations .......................................56
27. References ....................................................56
27.1. Normative References .....................................56
27.2. Informative References ...................................57
Appendix A. GROUP Encoding Instruction Examples ...................58
Appendix B. Insertion Encoding Instruction Examples ...............74
Appendix C. Extension and Versioning Examples .....................87
Legg Experimental [Page 2]
RFC 4911 Encoding Instructions for RXER July 2007
1. Introduction
This document defines encoding instructions [X.680-1] that may be
used in an Abstract Syntax Notation One (ASN.1) [X.680] specification
to alter how ASN.1 values are encoded by the Robust XML Encoding
Rules (RXER) [RXER] and Canonical Robust XML Encoding Rules (CRXER)
[RXER], for example, to encode a component of an ASN.1 value as an
Extensible Markup Language (XML) [XML10] attribute rather than as a
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