ASN.1

ALSO CALLED: Abstract Syntax Notation One
DEFINITION: ASN.1 (Abstract Syntax Notation One) is a standard way to describe a message (a unit of application data) that can be sent or received in a network. ASN.1 is divided into two parts: (1) the rules of syntax for describing the contents of a message in terms of data type and content sequence or structure and (2) how you actually encode each data item in a message. ASN.1 is defined in two ISO standards  … 
Definition continues below.

ASN.1 DEFINITION (continued): …  for applications intended for the Open Systems Interconnection (OSI) framework:ISO 8824/ITU X.208 specifies the syntax (for example, which data item comes first in the message and what its data type is)ISO 8825/ITU X.209 specifies the basic encoding rules for ASN.1 (for example, how to state how long a data item is)Here's an example of a message definition specified with ASN.1 notation: Report ::= SEQUENCE { author OCTET STRING, title OCTET STRING, body OCTET STRING, biblio Bibliography }In this very simple example, "Report" is the name … 
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