ASN1dubuisson.pdf

Abstract Syntax Notation One (ASN.1) is a notation that is used in describingmessages to be exchanged between communicating applicationprograms. It provides a high level description of messages that freesprotocol designers from having to focus on the bits and bytes layoutof messages. Initially used to describe email messages within the OpenSystems Interconnection protocols, ASN.1 has since been adopted foruse by a wide range of other applications, such as in network man agement,secure email, cellular telephony, air tra±c control, and voice andvideo over the Internet. agement,secure email, cellular telephony, air tra±c control, and voice andvideo over the Internet.