KOI-18, or KOI-18/TSEC, is a portable handheld electronic device for reading cryptographic keys of variable length from 8-level (8-bit) punched paper tape and transfering them to cryptographic equipment and key fill devices, developed around 1976 by the US National Security Agency (NSA) for use by the American armed forces and NATO.

KOI-18 - General Purpose Tape Reader KYK-13 - Electronic Transfer Device KYX-15/15A - Net Control Device Hereafter, all references to KYX-15 will also apply to KYX-15A. PURPOSE OF EQUIPMENT The Common Fill Devices are used to load and transfer cryptographic keys to compatible COMSEC equipment or from one fill device to another. 1-2.

KOI-18 paper tape reader. Can read 8-level paper or PET tape, which is manually pulled through the reader slot by the operator. It is battery powered and has no internal storage, so it can load keys of different lengths, including the 128-bit keys used by more modern systems.

The KOI-18 is a battery operated Key Tape Reader that converts physical key tape into an electronic format for use in the KYK-13, KYX-15, and the AN/CYZ-10 devices. It is capable of accepting both paper and mylar tapes. The KOl-18 has no storage capability.

Depot level maintenance and repair course on TSEC/KG-81 Key Generator, KOI-18/ TSEC Tape Reader, KYK-13/TSEC Fill Device, HNP-81-4 Power Supply and HNF- 81-4 Frame.

The KOI-18 is a hand-held paper tape reader developed by the U.S. National Security Agency as a fill device for loading cryptographic keys, or "crypto variables," into security devices, such as encryption systems.

Sep 4, 2013 · koi-18 General purpose tape reader The KOI-18 Tape Reader is a small, hand-carried electromechanical unit. It reads an eight level ASCII standard punched tape and converts the information to a serial output.

NSN: 5810-01-026-9620 | Model: KOI-18/TSEC A device capable of converting information from tape, punched program into electrical pulses suitable for application to another component. Excludes distributor-transmitter, teletypewriter.

Dec 14, 2002 · The KOI-18 may be the oldest electrical key loader (the KY-38 used a mechanical key loader). Used to load the Transmission Encryption Keys (TEK) into the KY-57 and about anything that needs a key.

The KOI-18 is a hand-held paper tape reader developed by the U.S. National Security Agency as a fill device for loading cryptographic keys, or "crypto variables," into security devices, such as encryption systems.