Question

_____________________ was a cylinder tool used by the Greeks, and is often specifically attributed to the Spartans. It was a physical cylinder that was used to encrypt messages. Turning the cylinder produced different ciphertexts. While it is not clear exactly how old this cipher is, it was first mentioned in the 7th century BC by the Greek poet Archilochus. The recipient uses a rod of the same diameter as the one used to create the message. He then wraps the parchment to read the message. To encrypt, one simply writes across the leather. A) Caesar cipher

B) Scytale

C) Vigenère cipher

D) Enigma machine

Answer 1

The ancient Greek tool used for encrypting messages by the Spartans is known as a Scytale, which is a cylindrical object that creates ciphertext when a parchment is wrapped around it.

Step-by-step explanation:

The cylinder tool used by the Greeks, often attributed to the Spartans, for encrypting messages was called a Scytale. By wrapping a parchment around a cylinder of a certain diameter, messages could be written across the leather or parchment which would appear nonsensical unless re-wrapped around a cylinder of the same size. This method turned a standard text into ciphertext, which could then only be read by someone who knew the diameter needed to read it. The Scytale is believed to be one of the earliest forms of secret communication and has historical significance in the study of cryptography.