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Caesar Cipher.png
The Caesar Cipher is one of the oldest ciphers, used by Julius Caesar to communicate with his generals. It works by shifting the alphabet down by a fixed number, or key. Due to the simplicity, it can be broken if the crypanalyst knows that a simple…

The scytale is known as the first cryptographic device, used in 400 B.C. by the Spartans. It consisted of a baton and a papyrus strips with letters. These papyrus strips would only reveal the message sent between Spartan generals if the baton they…

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