Certified Ethical Hacker (CEH v12) — Question 234

Your company, SecureTech Inc., is planning to transmit some sensitive data over an unsecured communication channel. As a cyber security expert, you decide to use symmetric key encryption to protect the data. However, you must also ensure the secure exchange of the symmetric key. Which of the following protocols would you recommend to the team to achieve this?

Answer options

• A. Switching all data transmission to the HTTPS protocol.
• B. Implementing SSL certificates on your company's web servers.
• C. Utilizing SSH for secure remote logins to the servers.
• D. Applying the Diffie-Hellman protocol to exchange the symmetric key.

Correct answer: D

Explanation

The correct answer is D, as the Diffie-Hellman protocol is specifically designed for securely exchanging cryptographic keys over a public channel. While options A, B, and C enhance data security and server access, they do not directly address the secure exchange of the symmetric key required for symmetric key encryption.