Comments on Wideband Security in the Common Carrier Systems - Industry Perspective

Transmission of classified information normally requires the use of a channel which provides end-to-end security. In such an arrangement, security is the principal concern; absence of transmission is preferred to compromise of transmission. Access to, and maintenance of, encryptors used for such communication is normally restricted to persons with at least a secret clearance. In situations where sensitive information travels through a region of easy compromise, as in microwave and satellite transmission systems commonly used in common carrier networks, bulk encryptors can provide an economically attractive way of enhancing privacy. In such situations, however, the foremost concern is provision of communication. Privacy is secondary, and the equipment which provides that privacy must be designed with a set of ground rules quite different from those appropriate for equipment intended for classified traffic. In the final analysis, there continues to be a need for both point-to-point security and bulk privacy.