The KSP-1 is very similar to the American
KYK-13 – both in size and in
functionality – but can store up to 32 SAVILLE keys, whereas the
KYK-13 can only hold 6 of them.
Furthermore, the KSP-1 has a different user interface,
consisting of a 3-digit Liquid Crystal Display (LCD) and three push buttons,
marked SW, SL and START.
The device has a male U-229 socket (U-283/U) at the front
and a female U-229 socket (GC-729) at the rear,
allowing it to be connected to any NATO standard equipment
and transfer keys to it, as well as accepting keys from other fill guns.
The device is SAVILLE-compatible,
which means that it can be used with all crypto equipment
and key transfer devices that can handle the 128-bit 1
keys used by speech encryption devices
that feature the SAVILLE algorithm,
such as the KY-57,
and the Elcrovox 1-4.
Such devices generally uses the
in combination with a standard 6-pin U-229 socket
and a 1:1 transfer cable,
for transferring the keys.
When unloaded, the KSP-1 is unclassified .
Apart from ANT,
the KSP-1 was available under the
Rohde & Schwarz
and other brand names.
The device is also known by its National Stock Number NSN 5810-12-314-6952.
In Germany, the KSP-1 is currently being replaced by the
Thales Data Transfer Device DTD-II
According to a Siemens brochure of 1991 ,
the KSP-1 was developed in cooperation with
SAVILLE is a secret cryptographic
algorithm, that was jointly developed by
and the NSA.
It uses an 120 bit secret KEY, with an 8-bit checksum.
The diagram below gives a quick overview of the controls and connections
on the body of the KSP-1, and demonstrates how the device itself can be loaded
with cryptographic keys by means of a KLL-1 tape reader.
Connect the KLL-1 (or the equivalent KOI-18)
to the female socket of the KSP-1 and enter a key tape in the reader of the
KLL-1. Turn the KSP-1 +ON by pressing START.
Press the SW-button (Schlüsselwahl, select key) repeatedly
until the number of the desired key compartment is visible in the display
(e.g. 15). Press START again to
initiate a transfer (a dot appers in the display).
Next, pull the key tape through the reader at
a constant speed. If all goes well, the letter 'P' should appear
on the display in front of the compartment number (e.g. P15).
Once all keys have been loaded into the KSP-1, the tape reader can be
disconnected and the KSP-1 is ready for use. To transfer a key from the
KSP-1 to a (compatible) encryption device, connect the KSP-1 to the fill
port of the device, turn it ON (press START-button) and select the desired
key compartment (SW-button). Next, initiate
a key loading sequence from the encryption device.
In case of an emergency, all keys that are stored inside the device
can be purged by pressing the three buttons simultaneously.
This process is known as ZEROIZING and can not be undone. Once the keys
are deleted, the device can not be used until new keys have been loaded.
SWSelect key compartment (Schlüsselwahl)
SLClear key compartment (Schlüssel löschen) press together with START
STARTPower ON, Start key transfer
NLZeroize (press all three buttons simultaneously)
KSP-1 is housed in a strong die-cast aluminium enclosure that consists
of a case shell and a watertight lid
that is held in place by four screws
at the corners. The interior can be accessed by removing the four screws
and taking off the lid.
Note that the battery compartment is part of the lid and is connected
to the printed circuit board (PCB) by two wires. The circuit is built
around two chips: a
custom-programmed Philips PCF-1106 microcontroller,
and a Harris CMOS RAM chip that holds the cryptographic keys. The LCD display
is fitted to the rear side of the board.
The KSP-1 was marketed by the following companies:
- not connected
- not connected
- Fill Devices KLL1, KEV1, KSP1
ZfCh 7049 E. ANT, April 1987. NATO RESTRICTED.
- Siemens, Encryption Equipments from Siemens
Brochure, 1991. p. 8.
- Rohde & Schwarz, KLL1 Key Tape Reader and KSP1 Key Transfer Device
Product leaflet, version 01.00, November 2006.
- Defensie Materieel Organisatie, Controlled Cryptographic / Comset Items (CCI's)
NC 023005. Dutch Department of Defence. RESTRICTED.
- NATO NCI Agency, DataTransfer Device DTD-II
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© Crypto Museum. Created: Saturday 14 September 2019. Last changed: Monday, 16 September 2019 - 07:12 CET.