Press Releases Archive (2000 - 2010)

TIA Publishes New Project 25 Document TIA-102.AACA-1

Contact:	Sharon Grace	For Immediate Release
	(703) 907-7721 sgrace@tiaonline.org	May 29, 2003

Arlington, Va. -- The Telecommunications Industry Association (TIA) has published a new standard, "Project 25 -- Digital Radio Over-the-Air-Rekeying (OTAR) Protocol -- Addendum 1 -- Key Management Security Requirements for Type 3 Block Encryption Algorithms," TIA-102.AACA-1. The document is addendum no. 1 to TIA/EIA-102.AACA. The Association of Public-Safety Communications Officials (APCO); the National Association of State Telecommunications Directors (NASTD); and Federal Government Agencies (FED), known as APCO/NASTD/FED, will be issuing common system standards for digital public safety radio communications (APCO/NASTD/FED Project 25 Standard). TIA, in cooperation with APCO/NASTD/FED, has generated standards, interim standards, specifications and TSBs that define the equipment and processes necessary for implementation of the APCO/NASTD/FED Project 25 Standard. This addendum specifies the general security requirements to be used when transmitting Type 3 key management messages (KMMs) as defined in the OTAR protocol document. It also specifies the requirements to encrypt (wrap) Type 3 keys when sent as part of a KMM, the techniques to be used to protect the integrity of KMMs and the mechanism used to protect against the replay of KMMs. The document provides support for triple data encryption standard (DES) and advanced encryption standard but is not limited to those algorithms. It is designed to support all block encryption algorithms that have a block size that is a multiple of two octets except for DES. The requirements for DES are specified in Annex D of the OTAR Protocol document. TIA-102.AACA-1 was created by TIA TR-8.3 Subcommittee on Encryption and released November 2002. To obtain copies of the document, please contact Global Engineering Documents at (800) 854- 7179 or visit http://global.ihs.com.

### The Telecommunications Industry Association (TIA) is the leading trade association serving the communications and information technology industry, with proven strengths in market development, trade shows, domestic and international advocacy, standards development and enabling e-business. Through its worldwide activities, the association facilitates business development opportunities and a competitive market environment. The association provides a market-focused forum for its 1,000 member companies that manufacture or supply the products and services used in global communications. TIA represents the communications sector of the Electronic Industries Alliance (EIA). Visit us at http://www.tiaonline.org.

P.A. Release 03-68/05.29.03