MICROPROCESSOR AND MICROCONTROLLER

ICT

ARCHITECTURE OF 8085

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
According to this ancient method of cryptography, a sender and recipient must have a cylinder of exactly the same radius
A
Caesar cipher
B
Spartan scytale
C
Polybius square
D
Alberti disk
E
Enigma machine
Explanation: 

Detailed explanation-1: -history of cryptology …a cipher device called the scytale for secret communication between military commanders. The scytale consisted of a tapered baton, around which was spirally wrapped a strip of parchment or leather on which the message was then written.

Detailed explanation-2: -In cryptography, a scytale (/ˈskɪtəliː/; also transliterated skytale, Ancient Greek: skutálē “baton, cylinder", also skútalon) is a tool used to perform a transposition cipher, consisting of a cylinder with a strip of parchment wound around it on which is written a message.

Detailed explanation-3: -(called a scytale) of exactly the same radius. The sender wound a narrow ribbon of parchment around his cylinder, then wrote on it lengthwise. After the ribbon is unwound, the writing could be read only by a person who had a cylinder of exactly the same circumference.

Detailed explanation-4: -Circa 600 BC: The ancient Spartans used a scytale device to send secret messages during battle.

There is 1 question to complete.