§ 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 transmitters manufactured after August
   11,  2014 must use the Advanced Encryption Standard (AES) specified in
   ANSI/TIA-102.AAAD-A: Project 25 Digital Land Mobile Radio-Block Encryption
   Protocol,  approved August 20, 2009 Until 2030, manufacturers may also
   include the Digital Encryption Standard (DES) or Triple Data Encryption
   Algorithm (TDEA), in addition to but not in place of AES, for compatibility
   with legacy radios that lack AES capability. 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. The standard can also be purchased from
   TIA/EIA, 2500 Wilson Boulevard, Arlington, VA 22201 703-907-7974; 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, www.ansi.org. Material incorporated by reference may be
   inspected at the Federal Communications Commission, 445 12th Street SW.,
   Washington,  DC  (Reference Information Center) 202-418-0270 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/ibr_loc
   ations.html.

   (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/ibr_loc
   ations.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;  79 FR 39341 , July 10, 2014]

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