TIA TSB-902.AAAA:2004 (R2013)

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Wideband Data System Security Services Overview Public Safety – Wideband Data Standards Project

Published By	Publication Date	Number of Pages
TIA	2004	32

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Category: TIA

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Description

In many cases, information security may be a vital component of
a general wideband data radio system. Several security services are
permitted for implementation in these systems. The services are
standards options and they operate within the bounds of the
interfaces defined for non-secure operation. This security overlay
may be used to provide end-to-end security of information
transferred across a general wideband data radio system or the
security overlay may be used to just protect information across the
air interface. The purpose of this document is to define the
meaning of these security services. The definition and detail of
how security services are provided is outside the scope of this
document.

A general wideband data radio communications system consists of
subscriber units, base stations and other fixed equipment for
single-site to wide area operation and computer end host system
equipment. The subscriber units include portable radios for
handheld operation and mobile radios for vehicular operation. The
base stations are for geographically fixed installations. A
standard should exist to describe any given specific instance of
such a general wideband data radio system. This document will refer
to such a specific instance of a general wideband data radio system
as defined by the TIA-902 series of standards.

This document provides an overview of the security services
available in wideband data radio systems. It provides the context
in which to understand when certain security services may be
desired and gives a general high-level description of how they are
provided. The purpose of security services is to neutralize
information security threats to a system. The nature of these
threats is discussed in this document, and the security services to
counter these threats are defined. In general, the subject of
security includes encryption, and this topic is discussed in
general terms to explain the different levels of encryption
algorithms available within the standard, and their application to
security services.

In the context of this document, the specific security
requirements are generalized into three security topics:

• Confidentiality (also known as Privacy)

• Authentication and Integrity

• Key management

These three categories correspond to the security services
available to wideband data radio systems. This document does not
provide specific message formats or operational details of these
security services

Additional information