Attribute

The Attribute record is a general-purpose key-value pair. The format of the key and the value is undetermined: applications will use them according to the context they operate in. The Attribute record has no fixed length, but it is at least 16 bytes long.

Field	Type	Size (bytes)	Description
key_size	uint	8	Size, in bytes, of the key field.
value_size	uint	8	Size, in bytes, of the value field.
key	blob	Variable	General-purpose key.
value	blob	Variable	General-purpose value.