Key

From DictionGloss

Information (usually a sequence of random or pseudorandom binary digits) used initially to set up and periodically change the operations performed in crypto-equipment for the purpose of encrypting or decrypting electronic signals, for determining electronic counter-countermeasures patterns (e.g., frequency hopping or spread spectrum), or for producing other key.

keyboard - An input device used to enter data by manual depression of keys, which causes the generation of the selected code element.

key distribution center - A COMSEC facility that generates and distributes key in electrical form.

keying - The generating of signals by the interruption or modulation of a steady signal or carrier.

keying variable - Deprecated synonym for key.

key management - Process by which key is generated, stored, protected, transferred, loaded, used, and destroyed.

Key Number System - A research aid developed by West Publishing Company which classifies digests of cases in to various law topics and subtopics which are given paragraph numbers called Key Numbers. Each key number for a given topic helps the researcher quickly find all references to the legal matter being researched.

key pulsing - A system of sending telephone calling signals in which the digits are transmitted by operation of a pushbutton key set.

keypunch - A keyboard-actuated punch that punches holes in a data medium.

key set - A multiline or multifunction user terminal device.

key stream - sequence of symbols (or their electrical or mechanical equivalents) produced in a machine or auto-manual cryptosystem to combine with plain text to produce cipher text, control transmission security processes, or produce key.

key telephone system - In a local environment, terminals and equipment that provide immediate access from all terminals to a variety of telephone services without attendant assistance.

key variable - Deprecated synonym for key.