Cryptochannel

Definition
Cryptochannel is

"1. A complete system of crypto-communications between two or more holders. 2. The basic unit for naval cryptographic communication. It includes: a. the cryptographic aids prescribed; b. the holders thereof; c. the indicators or other means of identification; d. the area or areas in which effective; e. the special purpose, if any, for which provided; and f. pertinent notes as to distribution, usage, etc. A cryptochannel is analogous to a radio circuit."