COMPUTER ETHICS AND SECURITY
CRYPTOGRAPHY AND ENCRYPTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Medieval Cryptography
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Polyalphabetic Cipher
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Classical Crytography
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Modern Cryptography
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Detailed explanation-1: -The first Polyalphabetic cipher was the Alberti Cipher which was introduced by Leon Battista Alberti in the year 1467. It used a random alphabet to encrypt the plaintext, but at different points and it can change to a different mixed alphabet, denoting the change with an uppercase letter in the cipher text.
Detailed explanation-2: -Use an Alberti Wheel to encrypt and decode secret messages. Leon Battista Alberti invented this device 600 years ago. It is a substitution cypher, where each letter of the message is replaced with a different letter, number, or symbol.
Detailed explanation-3: -Explanation: Poly alphabetic cipher is a type of substitution cipher.
Detailed explanation-4: -The same cipher letter D replaces two plaintext letters. Similarly, the two cipher letters Q and L stand for the plain letter A. This primitive polyalphabetic substitution cipher, developed by the Renaissance figure Leon Battista Alberti, is already much safer than any monoalphabetic cipher.
Detailed explanation-5: -Polyalphabetic ciphers were independently discovered in Europe in the 15th and 16th centuries. The first polyalphabetic cipher was invented by the Italian author Leon Battista Alberti in the 15th century. His overall work in cryptography was so important that he earned the title “Father of Western Cryptography”.