Computer Science for IGCSE & O level - Data Transmission (Section 5 - No. 20)
Which of the following statements is true regarding symmetric encryption?
It uses a public key for encryption and a private key for decryption.
It uses different keys for encryption and decryption.
It uses the same key for encryption and decryption.
It is more secure than asymmetric encryption.
Vysvetlenie
Symmetric encryption employs the same key for both encrypting and decrypting data.