A cipher machine is a mechanical device for encoding and decoding messages.
unconditional security no matter how much computer power or time is available, the cipher cannot be broken since the ciphertext provides insufficient information to uniquely determine the corresponding plaintext computational security given limited computing resources (eg time needed for calculations is greater than age of universe), the cipher cannot be broken
The Greeks
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Using a keyword as long as the message will make a vigenere cipher unbreakable.
James Leeson
Having the enemy's cipher machine made interception and interpretation much easier.
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Turing did not work on the Enigma, it was a German machine. However he did do some work on the British Bombe machines that were used to crack the Enigma machine cipher. Later he saw Tommy Flowers' Colossus electronic computer, designed to crack the German Lorenz SZ40/42 machine cipher. This inspired him after the end of the war to begin work on programmable electronic computers.
Japan's Code: Purple Cipher Germany's Code: Enigma Machine
Turing did not work on the Enigma, it was a German machine. However he did do some work on the British Bombe machines that were used to crack the Enigma machine cipher. Later he saw Tommy Flowers' Colossus electronic computer, designed to crack the German Lorenz SZ40/42 machine cipher. This inspired him after the end of the war to begin work on programmable electronic computers.
I don't know what the Germans called it, but when the British got ahold of it and began trying to decrypt it, they called it the "Enigma machine".
I don't know what the Germans called it, but when the British got ahold of it and began trying to decrypt it, they called it the "Enigma machine".
The circular reflector is a part of a cipher machine used by a code breaker. It made sure that the encrypted letter in a cipher could never be the actual letter itself. This device was useful in cracking codes during WWII.
The BAUDOT code is made from a cipher. The cipher that does this is also known as a Bacon cipher.
how to read pigpen cipher
Cipher Complex happened in 360.
Cipher System was created in 1995.