ISO/IEC 8825-2:2021 信息技术 ASN.1编码规则 第2部分：压缩编码规则（PER）规范

标准编号：ISO/IEC 8825-2:2021

中文名称：信息技术 ASN.1编码规则 第2部分：压缩编码规则（PER）规范

英文名称：Information technology — ASN.1 encoding rules — Part 2: Specification of Packed Encoding Rules (PER)

发布日期：2021-06

标准范围

本文档指定了一组打包编码规则，这些规则可用于导出Rec中定义的类型的值的传输语法。ITU-T X.680 ISO/IEC 8824-1。这些打包编码规则也将被应用于解码这样的传输语法，以便识别被传输的数据值。本文档中指定的编码规则:-在通信时使用；-旨在用于在选择编码规则时最小化值的表示的大小是主要关注的情况下；-对于Rec中描述的所有扩展形式，允许通过添加额外值来扩展抽象语法，保留现有值的编码。ITU-T X.680 ISO/IEC 8824？1;-可根据Rec的规定进行修改。ITU-T X.695 ISO/IEC 8825？6.

This document specifies a set of Packed Encoding Rules that may be used to derive a transfer syntax for values of types defined in Rec. ITU-T X.680 | ISO/IEC 8824-1. These Packed Encoding Rules are also to be applied for decoding such a transfer syntax in order to identify the data values being transferred.
The encoding rules specified in this document :
– are used at the time of communication;
– are intended for use in circumstances where minimizing the size of the representation of values is the major concern in the choice of encoding rules;
– allow the extension of an abstract syntax by addition of extra values, preserving the encodings of the existing values, for all forms of extension described in Rec. ITU-T X.680 | ISO/IEC 8824？1;
– can be modified in accordance with the provisions of Rec. ITU-T X.695 | ISO/IEC 8825？6.

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