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English |
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6/30/2021 |
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Details
This document specifies a set of basic XML Encoding Rules (BASIC-XER) that may be used to derive a transfer syntax for values of types defined in Rec. ITU-T X.680 | ISO/IEC 8824-1 and Rec. ITU-T X.681 | ISO/IEC 8824-2. This document also specifies a set of Canonical XML Encoding Rules (CXER) which provide constraints on the basic XML Encoding Rules and produce a unique encoding for any given ASN.1 value. This document further specifies a set of extended XML Encoding Rules (EXTENDED-XER) which adds further encoders options, and also allows the ASN.1 specifier to vary the encoding that would be produced by BASIC-XER. It is implicit in the specification of these encoding rules that they are also used for decoding.
The encoding rules specified in this document :
– are used at the time of communication,
– are intended for use in circumstances where displaying of values and/or processing them using commonly available XML tools (such as browsers) is the major concern in the choice of encoding rules,
– allow the extension of an abstract syntax by addition of extra values for all forms of extensibility described in Rec. ITU-T X.680 | ISO/IEC 8824-1.
This document also specifies the syntax and semantics of XER encoding instructions, and the rules for their assignment and combination. XER encoding instructions can be used to control the EXTENDED-XER encoding for specific ASN.1 types.
Additional Info
| Author | ISO/IEC |
|---|---|
| Committee | ISO/IEC JTC 1/SC 6 |
| Published by | ISOIEC |
| Document type | Standard |
| Edition | 4.0 |
| ICS | 35.100.60 : Presentation layer
|
| Number of pages | 71 |
| Replace | ISO/IEC 8825-4:2015 |
| Document history | ISO/IEC 8825-4:2015,ISO/IEC 8825-4:2015/COR1:2018 |
| Keyword | ISO/IEC8825-4,ISO/IEC 8825-4:2021,ISO/IEC 8825-4,ISO/IEC JTC 1/SC 6 |
