What does a block cipher utilize in order to change plaintext characters into two or more encrypted characters?
A) A mathematical structure known as an invertible matrix.
B) A random noise sampling from the computer's hardware.
C) A pseudorandom number generator defined by the encrypting language.
D) A hardware encryption chip designed to perform obfuscation.

Question

Quizplus · Accepted Answer

A block cipher utilizes an invertible matrix (also known as a substitution-permutation network) to change plaintext characters into two or more encrypted characters. This matrix is defined by the specific encryption algorithm being used and is responsible for the core encryption process.

What Does a Block Cipher Utilize in Order to Change