cheese.... yes! they used cheese.......
binary
cheese.... yes! they used cheese.......
cheese.... yes! they used cheese.......
Colossus used telephone and teleprinter technology to decrypt messages
The input for Colossus was a paper tape that went through a special optical reader at a speed of 5000 characters per second on a system of pulleys called "the bedstead". There were 8 punch positions per character on this paper tape: 5 holes for the encrypted Baudot character code, 1 character synchronization hole, 1 start hole, 1 stop hole.
The Colossus was built using thermionic valves, thyratrons, relays and stepping switches.The Colossus Mark 1 used about 1600 valves and the Colossus Mark 2 used about 2400 valves. After the Colossus Mark 2 was in production and use the single Colossus Mark 1 was briefly shutdown and upgraded to a Colossus Mark 2. Five of the ten Colossus machines also had a device called the "gadget" that aided in a process called "rectangling", the number of additional valves added to each of these enhanced Colossus Mark 2 machines is unknown.
A MAC scheme, short for Message Authentication Code scheme, is a cryptographic technique used to verify the integrity and authenticity of a message. It involves generating a unique tag based on the message content and a secret key, which is then used to authenticate the message and detect any tampering. This provides assurance that the message has not been altered in transit.
A quilt Code is how slaves used as a secret message to go to the Undergroud Railroad and off to the Northern States.
Colossus worked by holes punched in a paper tape. It was programmed by switches and plugs. Colossus used thermionic valves (vacuum tubes) to perform Boolean and counting operations.
Colossus was a very large computer that used valves - a far cry from a modern desktop computer. It was used to help break the German's Enigma Code.
Message Services. It was used as a wireless telegraph when introduced into the United States.
You will get a message that says, "This secret code is either incorrect or has already been used."