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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Numbers cannot be encrypted
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It would be relatively easy to decipher after encryption
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Symbols cannot be encrypted
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all of the above
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Detailed explanation-1: -Disadvantages of Caesar cipher It can be easily hacked. It means the message encrypted by this method can be easily decrypted. It provides very little security. By looking at the pattern of letters in it, the entire message can be decrypted.
Detailed explanation-2: -The Caesar cipher is based on transposition and involves shifting each letter of the plaintext message by a certain number of letters, historically three, as shown in Figure 5.1. The ciphertext can be decrypted by applying the same number of shifts in the opposite direction.
Detailed explanation-3: -The major drawbacks of Caesar cipher is that it can easily be broken, even in cipher-text only scenario. Various methods have been detected which crack the cipher text using frequency analysis and pattern words. One of the approaches is using brute force to match the frequency distribution of letters.
Detailed explanation-4: -The Caesar Cipher is not considered a strong method of encryption since it is easy to decode. Because of this, it is incorporated just as a part of complex encryption schemes. But even this basic level of encryption was certainly valuable, especially during Caesar’s campaigns of the 1st century BC.