§  90.553   Encryption.

   (a) Encryption is permitted on all but the two nationwide
   Interoperability calling channels. Radios employing encryption must
   have a readily accessible switch or other readily accessible control
   that permits the radio user to disable encryption.

   (b) If Encryption is employed then the following encryption protocol
   must be used: Project 25 DES Encryption Protocol, approved January 23,
   2001, Telecommunications Industry Association,
   ANSI/TIA/EIA-102.AAAA-A-2001.

   (c) The Director of the Federal Register approves this incorporation by
   reference in accordance with 5 U.S.C. 552(a) and 1 CFR part 51. Copies
   of the standard listed in this section that are incorporated by
   reference may be inspected at the Federal Communications Commission,
   445 12th Street, SW., Washington, DC (Reference Information Center) or
   at the National Archives and Records Administration (NARA). For
   information on the availability of this material at NARA, call
   202–741–6030, or go to:
   http://www.archives.gov/federal_register/code_of_federal_regulations/ib
   r_locations.html. The standard can also be purchased from TIA/EIA, 2500
   Wilson Boulevard, Arlington, VA, 22201; Global Engineering Documents,
   15 Inverness Way East, Englewood, CO 80112; or the American National
   Standards Institute, 25 West 43rd Street, Fourth Floor, New York, NY
   10036 (or via the Internet at www.ansi.org. )

   [ 66 FR 10636 , Feb. 16, 2001, as amended at  67 FR 61006 , Sept. 26, 2002]