Question

Which type of encryption uses the same key to encrypt and decrypt a message? ___________.

A. Asymmetric encryption
B. Symmetric encryption
C. Public-key encryption
D. Digital signature

Answer 1

Symmetric encryption uses the same key to encrypt and decrypt a message.

Step-by-step explanation:

The type of encryption that uses the same key to encrypt and decrypt a message is Symmetric encryption. With symmetric encryption, both the sender and the receiver use the same key to convert plaintext into ciphertext and then back into plaintext. This method is efficient for secure communication between two parties who share a secret key.