Computer Science for IGCSE & O level - Data Transmission (Section 11 - No. 26)
In symmetric encryption, what is the primary requirement for secure data transmission?
Sharing a public key.
Protecting a private key.
Securing the secret key.
Using different keys for encryption and decryption.
คำอธิบาย
The secret key must be protected to maintain the confidentiality of the encrypted data.