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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7
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6
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3
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2
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Detailed explanation-1: -The Caesar cipher shifts all the letters in a piece of text by a certain number of places. The key for this cipher is a letter which represents the number of place for the shift. So, for example, a key D means “shift 3 places” and a key M means “shift 12 places”.
Detailed explanation-2: -An old simplistic trick is the Caesar cipher. Pick a key from 1 and 25; then for each character in your message, shift each letter forward by the key, wrapping around the end of the alphabet. For example, if your original message is “helloyou", and your key is 2, your encrypted message is “jgnnqaqw".
Detailed explanation-3: -One of the earliest and best-known encryption schemes is the Caesar Cipher. The Caesar Cipher is a shift cipher and encrypts the data by replacing the original letters with “x” number of characters ahead in the alphabet.
Detailed explanation-4: -The following word was encrypted using a Caesar cipher with a shift of 2: ecguct. What word is it? To decrypt a message, we need to move the alphabet backwards by 2. E will become C, C become A, G become E, U become S, C become A, T become R.