COMPUTER FUNDAMENTALS

COMPUTER ETHICS AND SECURITY

CRYPTOGRAPHY AND ENCRYPTION

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
Which cipher uses the inverse alphabet to create encrypted messages?
A
Atbash
B
Caesar’s
C
Random Substitution
D
RSA
Explanation: 

Detailed explanation-1: -Atbash (Hebrew: ; also transliterated Atbaš) is a monoalphabetic substitution cipher originally used to encrypt the Hebrew alphabet.

Detailed explanation-2: -The Atbash Cipher maps each letter of an alphabet it to its reverse, so that the first letter (e.g. A) becomes the last letter (e.g. Z), the second letter (B) becomes the second to last letter (Y), and so on.

Detailed explanation-3: -It is a simple substitution code, where the first letter of the alphabet ( alef) is replaced by the last ( taw), the second letter ( bet) by the second last ( sin or shin) etc. The name ‘atbash’ refers to the first letters of the names of these Hebrew characters: alef, taw, bet and shin.

Detailed explanation-4: -What is Atbash cipher (Definition) Atbash cipher (also called mirror cipher or backwards alphabet or reverse alphabet ) is the name given to a monoalphabetical substitution cipher which owes its name and origins to the Hebrew alphabet.

Detailed explanation-5: -It was originally developed for use with the Hebrew alphabet. In fact, in the Book of Yirmeyahu (Jeremiah), there are several words that have been enciphered through the use of the Atbash Cipher. It’s considered one of the easiest ciphers to use because it follows a very simple substitution method.

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