This is a list of telecommunications encryption terms. This list is derived in part from the Glossary of Telecommunication Terms published as Federal Standard 1037C. * A5/1 – a stream cipher used to provide over-the-air communication privacy in the GSM cellular telephone standard. * Bulk encryption * Cellular Message Encryption Algorithm – a block cipher which was used for securing mobile phones in the United States. * Cipher * Cipher system * Cipher text * Ciphony * Civision * Codress message * COMSEC equipment * Cryptanalysis * Cryptographic key * CRYPTO (International Cryptology Conference) * * Crypto-shredding * Data Encryption Standard (DES) * Decipher * Decode * Decrypt * DECT Standard Cipher * Descrambler * * Encode * Encoding law * Encrypt * End-to-end