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Standards development within the Information Technology sector is harmonized with international standards development. Through the CSA Technical Committee on Information Technology (TCIT), Canadians serve as the SCC Mirror Committee (SMC) on ISO/IEC Joint Technical Committee 1 on Information Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO member body for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of the International Telecommunication Union (ITU), Canada participates in the International Telegraph and Telephone Consultative Committee (ITU-T).
For brevity, this Standard will be referred to as CAN/CSA-ISO/IEC 8824-1 throughout.
This Standard supersedes CAN/CSA-ISO/IEC 8824-1:12 (adopted ISO/IEC 8824-1:2008). At the time of publication, ISO/IEC 8824-1:2015 is available from ISO and IEC in English only. CSA Group will publish the French version when it becomes available from ISO and IEC.
This Recommendation | International Standard 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.
This Recommendation | International Standard:
– 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.
Amendment 1:2020 to CAN/CSA-ISO/IEC 8824-1:16, Information technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation - Amendment 1: Relaxing imports clause to allow importation of definitions from new versions of a given module (Adopted amendment 1:2019 to ISO/IEC 8824-1:2015)