This is a glossary of telecommunications encryption terms, derived from the Glossary of Telecommunication Terms published as Federal Standard 1037C. Please see the Federal Standard article for copyright-related issues, as not all parts of the source document are in the public domain.

bulk encryption -- cipher -- cipher system -- cipher text -- ciphony -- civision -- codress message -- compromise -- COMSEC equipment -- cover -- cryptanalysis -- CRYPTO -- Data Encryption Standard (DES) -- decipher -- decode -- decrypt -- descrambler -- encipher -- encode -- encoding law -- encrypt -- end-to-end encryption -- garble -- group -- key -- key distribution center (KDC) -- key management -- key stream -- link encryption -- multiplex link encryption -- net control station (NCS) -- null -- OTAR -- plain text -- protected distribution system (PDS) -- protection interval (PI) -- pseudorandom number generator -- public key cryptography -- RED/BLACK concept -- RED signal -- rekeying -- remote rekeying -- security management -- spoofing -- superencryption -- synchronous crypto-operation -- transmission security key (TSK) -- trunk encryption device (TED) -- type 1 product -- type 2 product -- type 3 algorithm -- type 4 algorithm -- unique key -- variant -- vocoder