Which encryption method replaces a letter of the alphabet for another letter of the alphabet?
A)Substitution cypher
B)Digital envelope
C)Symmetric cryptography
D)Asymmetric cryptography

Question

Quizplus · Accepted Answer

A substitution cypher involves replacing letters of the alphabet with other letters, numbers, or symbols. This is a form of symmetric cryptography as the same replacement rules are used for both encryption and decryption.

Which Encryption Method Replaces a Letter of the Alphabet for Another