Computer Science for IGCSE & O level - Data Transmission (Section 5 - No. 38)
What is the purpose of a public key in asymmetric encryption?
To decrypt messages only.
To encrypt messages only.
To encrypt and decrypt messages.
To store private keys securely.
Explanation
A public key is used to encrypt messages, while the corresponding private key is used for decryption. The public key can be shared with anyone.