Cipher device
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A cipher device was a term used by the US military in the first half of the 20th century to describe a manually operated cipher equipment that converted the plaintext into ciphertext or vice versa. A similar term, cipher machine, was used to describe the cipher equipment that required external power for operation.[1] Cipher box or crypto box is a physical cryptographic device used to encrypt and decrypt messages between plaintext (unencrypted) and ciphertext (encrypted or secret) forms. The ciphertext is suitable for transmission over a channel, such as radio, that might be observed by an adversary the communicating parties wish to conceal the plaintext from.
See also
References
- ^ United States. Department of the Army 1969, p. 94, cipher device, cipher equipment, cipher machine.
Sources
- United States. Department of the Army (1969). Dictionary of United States Army Terms: (short Title: AD). Army regulation. Headquarters, Department of the Army. Retrieved 2024-11-20.
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