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Secure voice and data terminal
- this page is a sub
E-20 (later: E-20M) is a cryptographically protected telephone set
for analogue
PSTN networks, developed around 2005 in Russia.
The device is suitable for secure voice and data traffic over insecure
networks, as speeds of 2500, 4800 and 9600 baud.
The 256 bit encryption key is stored on an external
Data Key K1634DK6 or K1634DK4 device, that has the shape of a physical key [1].
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The device has the appearance of a regular desktop telephone set.
At the top is a Liquid Crystal Display (LCD). Just below it is
keypad with 12 buttons, plus 7 additional buttons for
navigation through the menus. TO the right of the keypad are 16 buttons
for quick access to frequently dialled numbers or internal lines.
At the right side of the device is a receptacle for a
Data Key K1634DK4 (К1634ДК4)
key storage device that acts as a Crypto Ignition key (CIK).
Secure traffic is only possible when the CIK holds a valid key
and is inserted into the E-20 (E-20M).
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The key storage device is very similar to the KSD-64
that was used with the American STU-III crypto phones,
and was made by the same company.
The E-20(M) is compatible with the E-34 and M459-1S (М459-1С)
bulk encription equipment. The equipment is supplied
by BNTI in Moscow — a company formed by
reserve officers of the Russian intelligence service FSB.
A battery-powered version of the E-20, housed in an unobtrusive briefcase
is known as the E-57.
➤ More about BNTI
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Below is an overview of the features of the E-20. The device has the
size of a regular executive telephone set with 16 speed dial keys at
the right hand side. At the upper edge is an LCD.
At the centre is a regular DTMF keypad with the
digits 0-9 plus * and #. Directly above it, are the keys for selecting
the mode of operation (clear/crypto) and the navigation buttons for
the menus.
At the right is a receptacle for the Crypto Ignition Key (CIK),
which must be installed before the telephone can be used in secure mode.
At the rear are the connections for the analogue PSTN line
and for connection of the external power supply unit (PSU),
which is not shown here.
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Key storage device
К1634ДК4
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The number of contacts and the shape of the tip and the grip
are different.
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Type Crypto telephone Pupose Speech and data traffic Network Analogue PSTN Serial port RS232C (asynchronous) Intelligibility 90% Key storage K1634DK4 (Data Key) Key length 256 bits Possible keys 1077 Power 110V/60Hz, 220V/50-60Hz Consumption 25W Temperature 5°C to 40°C Dimensions 290 x 280 x 130 mm (phone)
238 x 110 x 100 (PSU) Weight 5500 g (phone)
2800 g (PSU)
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© Crypto Museum. Created: Thursday 10 March 2022. Last changed: Friday, 15 April 2022 - 06:59 CET.
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