National Security Agency encryption devices

KIV-7

The KIV-7 is a National Security Agency Type-1, single-channel encryptor originally designed in the mid-1990s by AlliedSignal Corporation to meet the demand for secure data communications from personal computers (PC), workstations, and FAXs. It has data rates up to 512 kbit/s and is interoperable with the KG-84, KG-84A, and KG-84C data encryption devices. (Wikipedia).

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NSA encryption systems | Cryptography | KG-84