信息技术.抽象语律记法.1(ASN.1):基本记法规范

[中文适用范围]： 本建议/国际标准提供了一套名为抽象语法表示法一（ASN.1）的标准表示法，用于定义数据类型、值和约束。本建议/国际标准：定义了若干简单类型及其标签，并指定了引用这些类型和指定这些类型值的方法；定义了从更基础类型构建新类型的机制，并指定了定义此类类型和分配其标签，以及指定这些类型值的方法；定义了用于ASN.1内部的字符集（通过引用其他建议和/或国际标准）。ASN.1表示法可应用于任何需要定义信息抽象语法的场合。ASN.1表示法被其他定义ASN.1类型编码规则的标准所引用。 [外文原描述]： ISO/IEC 8824-1:2015 provides a standard notation called Abstract Syntax Notation One (ASN.1) that is used for the definition of data types, values, and constraints on data types. ISO/IEC 8824-1:2015: - defines a number of simple types, with their tags, and specifies a notation for referencing these types and for specifying values of these types; - defines mechanisms for constructing new types from more basic types, and specifies a notation for defining such types and assigning them tags, and for specifying values of these types; - defines character sets (by reference to other Recommendations and/or International Standards) for use within ASN.1. The ASN.1 notation can be applied whenever it is necessary to define the abstract syntax of information. The ASN.1 notation is referenced by other standards which define encoding rules for the ASN.1 types.