Ссылочный номер
ISO/IEC 8825-4:2015
© ISO 2024
ISO/IEC 8825-4:2015
Information technology — ASN.1 encoding rules: XML Encoding Rules (XER) — Part 4:
Версия 3
2015-11
В время отменен
Отозвано (Версия 3, 2015)

Тезис

ISO/IEC 8825-4:2015 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 Recommendation | International Standard 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 Recommendation | International Standard 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 Recommendation | International Standard:

- 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.

ISO/IEC 8825-4:2015 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.

Общая информация

  • Текущий статус
     : Отозвано
    Дата публикации
     : 2015-11
    Этап
    : Отмена международного стандарта [95.99]
  • Версия
     : 3
  • Технический комитет :
    ISO/IEC JTC 1/SC 6
    ICS :
    35.100.60 
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