Lecture 15: ASN.1 and BER Intro

The Basic Tree

In ASN.1, an OBJECT IDENTIFIER is specified using the following syntax, eg:

Document-Type-Name ::=
    OBJECT IDENTIFIER
fTAM-1 Document-Type-Name ::=
    { 1 0 8571 5 1 }

The textual values (Object Descriptors) may also be used, and mixed, where no confusion can arise, eg:

internet OBJECT IDENTIFIER ::=
    { iso org(3) dod(6) 1 }

or even just:

{ internet }

For more information on ASN.1, you might care to look at the ASN.1 home page
The tutorial for this lecture is Tutorial #15.
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