COMSEC Equipment

Equipment designed to provide security to telecommunications by converting information to a form unintelligible to an unauthorized interceptor and, subsequently, by reconverting such information to its original form for authorized recipients; also, equipment designed specifically to aid in, or as an essential element of, the conversion process. COMSEC equipment includes crypto-equipment, cryptoancillary equipment, cryptographic production equipment, and authentication equipment.
SOURCE: CNSSI-4009