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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monoalphabetic cipher
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polyalphabetic cipher
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bill cipher
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enigma cipher
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Detailed explanation-1: -The Caesar Cipher is a monoalphabetic rotation cipher used by Gaius Julius Caesar. Caesar rotated each letter of the plaintext forward three times to encrypt, so that A became D, B became E, etc., as shown in Table 4.6. Table 4.7 shows how “ATTACK AT DAWN” encrypts to “DWWDFN DW GDZQ” using the Caesar Cipher.
Detailed explanation-2: -In Caesar cipher, it can see that it is simply for a hacker to crack the key as Caesar cipher supports only 25 keys in all. This pit is covered by utilizing Monoalphabetic cipher. In Monoalphabetic cipher, the substitute characters symbols supports a random permutation of 26 letters of the alphabet. 26!
Detailed explanation-3: -Monoalphabetic cipher is a substitution cipher in which for a given key, the cipher alphabet for each plain alphabet is fixed throughout the encryption process. For example, if ‘A’ is encrypted as ‘D’, for any number of occurrence in that plaintext, ‘A’ will always get encrypted to ‘D’.