Abstract Syntax Notation One / ASN.1 for Not Yet Techies

"Computer Careers: Using This Modular Language for Describing Structured Information"

by Richard Stooker, President Info Ring Press and author of Secrets of Changing to a Computer Career

Abstract Syntax Notation One / ASN.1 is a modular language or standard way of describing structured information. It is used in the specification of communication protocols, such as a message that can be sent and received through a network. Abstract Syntax Notation One / ASN.1 is defined in two ISO standards for applications intended for the OSI Reference Model.

Abstract Syntax Notation One / ASN.1 is divided into two parts:

1. Rules of syntax for describing content of a message -- ISO 8824/ ITU X.208

2. How each item of data in a message is encoded -- ISO 8825/ITU .209

The Basic Encoding Rules (BER), were standardized as a companion standard to Abstract Syntax Notation One / ASN.1

There are now two subsets: the Canonical and the Distinguished Encoding Rules.

The fundamental concepts are the inter-related notions of type and value. Data types include:

Octet String
Integer
Boolean
Real
Bit String
Enumerated

These are the Abstract Syntax Notation One / ASN.1 basics.

Next: Beep technology toolkit

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