Practical Internet of Things Security - Second Edition

Establish naming conventions and uniqueness requirements

Uniqueness is a feature that can be randomized or deterministic (for example, algorithmically sequenced); its only requirement is that there are no others identical to it. The simplest unique identifier is a counter. Each value is assigned and never repeats itself. The other is a static value together with a counter, for example, a device manufacturer ID plus a product line ID plus a counter. In many cases, a random value is used together with static and counter fields. Non-repetition is generally not enough from the manufacturer's perspective. Usually, something needs a name that provides some context. To this end, manufacturer-unique fields may be added in a variety of ways unique ...