|
|
|
|
|
|
As the successor of the T-36, the T-37
was used in the years before, during and after World War II (WWII),
on many telegraphy networks in Europe, including the
public telex networks of Germany, Belgium, France, Austria and The Netherlands.
A Dutch variant is shown in the image on the right.
During WWII,
the machine was used extensively by the German Army for
communication with all parts of the war theatre, mainly over fixed land-lines,
but occasionally over the air (i.e. via radio).
A variant of the machine with built-in
One-Time Tape encryption,
was known as the T-37/ICA.
|
|
|
- T-37
This is the standard version of the T-37 teletypewriter.
- T-37 ICA
This is a special version that has been coverted for use as a One-Time
Tape cipher machine. It features two large lamps on the front cover
(a green one and a red one) and has a connection for an external tape reader.
|
The T-37 was also available as a
One-Time Tape (OTT) cipher machine,
or Mixer.
This version is known as T-37 ICA and can be recognised by two large
lamps on its cover: a green one and a red one. Furthermore, it has a connection
for an external paper tape reader, of which the characters are
binary xor-ed with the letters from the plaintext.
It is the automated
form of the On-Time Pad (OTP) cipher.
When correctly applied and used with a truly random tape,
it is unbreakable [2].
|
|
The T-37 is known to have been in service in the following countries:
|
- Austria
- Belgium
- Denmark
- German
- Netherlands
|
- De Verreschrijvers T-37/LP, T-68/LP
Description and operating instructions for the Siemens T-37 and T-68 (Dutch).
Belgian Army. March 1967.
- Tgf 1011a, montage-, instel- en onderhoudsvoorschrift — WANTED
Installation, alignment and maintenance manual (Dutch).
PTT, November 1956, Issue 1.
- Tfg 1011b, Afbeeldingen
Pictures, belonging to Tgf 1011a (Dutch).
PTT, November 1956, Issue 1. 1
|
-
Document kindly provioded by Gert Stam [1].
|
|
|
|
Any links shown in red are currently unavailable.
If you like the information on this website, why not make a donation?
© Crypto Museum. Created: Monday 15 January 2018. Last changed: Monday, 19 August 2019 - 19:40 CET.
|
 |
|
|
|
