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Electronic Transfer Device - Wanted item
The KYK-13 is a small electronic transfer device
used by the military for the distribution of cryptographic material,
commonly refererred to as Transmission Encryption Keys (TEK).
It was developed by the US National Security Agency
(NSA) and uses the
DS-102 protocol for key transfer.
It is known by National Stock Number (NSN) 5810-01-026-9618.
A total of 6 TEK variables can be stored
in the internal memory of the KYK-13, making it suitable for voice crypto
devices, such as the
KY-57 (Vinson),
KY-99
and some SINCGARS radios.
It was also used with the STU-II/B
and Spendex-40 crypto phones.
In normal use, the device itself is filled with cryptographic material
from of a key generator or another key fill device.
The KYK-13 has two 6-pin U-229 connectors with are electrically identical,
one for loading the keys into it, and one for transferring the keys into,
say, a radio set.
These two connectors are used to connect a special fill cable,
a compatible COMSEC device (e.g. radio set),
the KOI-18
key generator, the KYX-15,
the later AN/CYZ-10,
or another KYK-13 device.
The KYK-13 is powered by a small 6V battery.
It is also known by its National Stock Number (NSN) 5810-01-026-9618.
The KYK-13 was superceeded by more advanced units, such as the
AN/CYZ-10 Data Transfer Device,
but many units are still in use today (2010) because of their simplicity.
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The KYK-13 is very easy to operate and has only a few controls. There are
two rotary switches (mode and address) with a recessed push button in between
them (transfer).
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The image on the right shows a KYK-13 unit connected to a Philips
Spendex-40 military-grade crypto phone.
It is used here to load the Traffic Encryption Keys (TEK) into the
secure telephone. The keys are further protected by the presence of a
rather large CIK that is located immediately below the KYK-13.
 More about Spendex 40...
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© Copyright 2009-2011, Paul Reuvers & Marc Simons. Last changed: Tue,27 Dec 2011.17:47:19
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