Computer Science for IGCSE & O level - Data Transmission (Section 3 - No. 3)
What kind of key is used for encrypting a document, so that it can only be decrypted by a person who knows the corresponding key?
Public key
Private key
Symmetric key
Session key
Giải thích
Public key is used to encrypt the data and is open to all, only the private key can decrypt the data.