cheese.... yes! they used cheese.......
cheese.... yes! they used cheese.......
cheese.... yes! they used cheese.......
binary
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.
Colossus used telephone and teleprinter technology to decrypt messages
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.
the spam option
Colossus, the first electronic digital computer, was tasked with decoding messages during World War II, particularly those encrypted by the Lorenz cipher used by the German military. The messages were intercepted by British codebreakers, who then fed the encrypted data into Colossus. The machine utilized a series of logical circuits and Boolean algebra to process and analyze the ciphered texts, effectively decoding them and providing crucial intelligence to the Allies.
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.