__________ is when each plaintext element or group of elements is uniquely replaced by a corresponding ciphertext element or group of elements.
A)Substitution
B)Diffusion
C)Streaming
D)Permutation

Question

__________ is when each plaintext element or group of elements is uniquely replaced by a corresponding ciphertext element or group of elements.
A)Substitution 
B)Diffusion
C)Streaming
D)Permutation

Quizplus · Accepted Answer

Substitution is the process of replacing plaintext with ciphertext based on a predetermined rule. Each plaintext element or group of elements is replaced by a corresponding ciphertext element or group of elements. This can be done using various techniques, such as a monoalphabetic substitution where each letter in the plaintext is replaced by a corresponding letter in the ciphertext or a polyalphabetic substitution where the substitution changes based on the position of the letter in the plaintext.

__________ Is When Each Plaintext Element or Group of Elements