John is creating an encryption by replacing every third letter of the alphabet by the fifth letter to its left. Sally, an expert at encryption, immediately notices the pattern and suggests for John to use random values. What would John use to do this?
A)Randomization
B)Initialization Vectors
C)Mapping
D)Isolation

Question

Quizplus · Accepted Answer

Initialization vectors (IV) are random values that are used with algorithms to ensure patterns are not created during the encryption process. They are used with keys and do not need to be encrypted when being sent to the destination. If IVs are not used, then two identical plaintext values that are encrypted with the same key will create the same ciphertext. The IV and key should both be used by the algorithm to provide more randomness to the encryption process. A strong and effective cipher has long periods of no repeating patterns within keystream values, is a statistically unpredictable keystream, is not linearly related to the key, and statistically should be an unbiased keystream.

John Is Creating an Encryption by Replacing Every Third Letter