Octet-Level Encoding of ASN.1

In ASN.1 all objects actually transmitted are encoded as octets or sequences of octets (see #fn79#1584>. There is a standard encoding schema which allows for extensions, and permits length- delimited and typecast objects to be constructed. The representation of Octets and Octet-Sequences should always conform to the ISO/CCITT standard to ensure ordering and identification of Octets and Bits within Octets remains correct. This is simply defined as:

Figure: Bit/Octet Ordering in Concrete Ordering

The Data Element The basic unit of an ASN.1 specification is the data element or element for short. This is a variable length object but always has three fields (each of variable length): verbatim57