One of your executives needs to send an important and confidential email.

 Encrypting Confidential Emails:

Public-key cryptography ensures confidentiality by allowing the sender to encrypt a message using the recipient’s public key. Only the recipient can decrypt it using their private key.

 Key Functionality:

Recipient's Public Key: Encrypts data securely.

Recipient's Private Key: Used exclusively to decrypt the message.

 Why Not Other Options:

A. Your public key: Encrypts messages meant for you, not for others.

B. The recipient's private key: Private keys should never be shared or used for encryption.

D. Certificate authority key: Used for signing certificates, not encrypting messages.

 EC-Council Emphasis:

The correct use of cryptographic keys ensures confidentiality and aligns with secure communication protocols.