COMSEC equipment

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.

Note: COMSEC equipment includes crypto-equipment[?], crypto-ancillary equipment, cryptoproduction equipment, and authentication equipment.

Source: from Federal Standard 1037C and from the National Information Systems Security Glossary