Explain the origin of the Caesar Cipher.What is the enigma machine? Explain the significance of this machine.

Answered: Explain the origin of the Caesar…

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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Caesar Cipher:

Caesar Cipher is one of the oldest and easiest ways of encrypting a message and is also known as a shift cipher.
It is a type of substitution cipher in which each letter in the original message is replaced by a letter corresponding to a certain number of letters moved up or down in the alphabet.
Every alphabet letters take its position; say for example 3 for letter “C” and it shit by the key number.
If the user had a key of +3 that the letter “C” would be shifted to an “F” and the same process would be done for every letter in the original message (which is called plain text in cryptography).
In this way, the message that was readable initially would end up in a form that cannot be understood at a simple glance.
For example.
- Consider the plain text, “THE BROWN FOX JUMPS OVER THE LAZY DOG”,
- Then the cipher text would be “QEB NRFZH YOLTK CLU GRJMP LSBO QEB IXWV ALD”.