X-Nico

Baudot

Émile Baudot (1845-1903), French telegraph engineer, inventor of the Baudot code

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Baudot code, a way to encode characters for sending over a communication channel

Lorenz cipher

Tutte did this with the original teleprinter 5-bit Baudot codes, which led him to his initial breakthrough of recognising a 41 character repetition.

Siemens and Halske T52

The teleprinters of the day emitted each character as five parallel bits on five lines, typically encoded in the Baudot code or something similar.

Stream cipher attack

Another situation where recovery is trivial is if traffic-flow security measures have each station sending a continuous stream of cipher bits, with null characters (e.g. LTRS in Baudot) being sent when there is no real traffic.

Telecommunications device for the deaf

The original standard used by TTYs is the Baudot code implemented asynchronously at either 45.5 or 50 baud, 1 start bit, 5 data bits, and 1.5 stop bits.

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In order to be compatible with the existing TTY network, the MCM was designed around the five-bit Baudot code established by the older TTY machines instead of the ASCII code used by computers.

see also