A ____ cipher is a symmetric cipher in which the input digits are encrypted one at a time.
A) block
B) group
C) bit
D) stream

Question

Quizplus · Accepted Answer

A stream cipher is a symmetric cipher that encrypts one digit at a time, making it the best choice for this scenario. Block ciphers encrypt data in fixed-size blocks, whereas a stream cipher can encrypt data of any length, making it more flexible. Group ciphers do not exist, and bit cipher is not a common term in cryptography.

A ____ Cipher Is a Symmetric Cipher in Which the Input