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# CSA ISO/IEC 8824-1

## Information technology — Abstract Syntax Notation One (ASN.1): Specification of basic notation

active, Most Current
 Organization: CSA Publication Date: 1 January 2016 Status: active Page Count: 225 ICS Code (Presentation layer): 35.100.60
##### scope:

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.

### Document History

January 1, 2020
IInformation 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
A description is not available for this item.
January 1, 2016
Information technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation
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...
January 1, 2016
Information technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation
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...
CSA ISO/IEC 8824-1
January 1, 2016
Information technology — Abstract Syntax Notation One (ASN.1): Specification of basic notation
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...
March 1, 2012
Information technology — Abstract Syntax Notation One (ASN.1): Specification of basic notation
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...
January 1, 2012
Information technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation
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...
January 1, 2012
Information technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation
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...
October 1, 2009
Information technology — Abstract Syntax Notation One (ASN.1): Specification of basic notation — AMENDMENT 4: PER encoding instructions
Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies...
July 1, 2007
Information technology — Abstract Syntax Notation One (ASN.1): Specification of basic notation AMENDMENT 3: Time type support
Introduction Insert before "Clauses 35 to 40 …": Clause 34 bis and Annex A bis define the types that provide support for ISO 8601. Insert before "Annex B …" Annex A bis forms an integral part of...
July 1, 2007
Information technology — Abstract Syntax Notation One (ASN.1) — Part 1: Specification of basic notation TECHNICAL CORRIGENDUM 1
A description is not available for this item.
December 1, 2006
Information technology — Abstract Syntax Notation One (ASN.1): Specification of basic notation AMENDMENT 2: Alignment with changes made to ITU-T Rec. X.660 - ISO/IEC 9834-1 for identifiers in object identifier value notation
Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies...
October 1, 2005
Information technology — Abstract Syntax Notation One (ASN.1): Specification of basic notation AMENDMENT 1: Support for EXTENDED-XER
a) In the Introduction, insert the following paragraph immediately prior to the paragraph that begins with "An ASN.1 specification will initially be produced with a set of fully defined ASN.1...
December 1, 2004
Information Technology - Abstract Syntax Notation One (ASN.1): Specification of Basic Notation
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...
December 1, 2002
Information technology Abstract Syntax Notation One (ASN.1): Specification of basic notation AMENDMENT 1: Relative object identifiers AMENDMENT 2: ASN.1 Semantic Model
Foreword ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies...
December 1, 2002
Information technology Abstract Syntax Notation One (ASN.1): Specification of basic notation AMENDMENT 1: Relative object identifiers
This Recommendation I International Standard provides a standard notation called Abstract Syntax Notation One (ASN.l) that is used for the defímition of data types, values, and constraints on data...
December 1, 2002
Information technology Abstract Syntax Notation One (ASN.1): Specification of basic notation
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...
February 1, 1997
Information Technology - Abstract Syntax Notation One (ASN.1): Specification of Basic Notation
This Recommendation I 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...