Certified Ethical Hacker (CEH v13) — Question 220

Sam, a web developer, was instructed to incorporate a hybrid encryption software program into a web application to secure email messages. Sam used an encryption software, which is a free implementation of the OpenPGP standard that uses both symmetric-key cryptography and asymmetric-key cryptography for improved speed and secure key exchange.
What is the encryption software employed by Sam for securing the email messages?

Answer options

• A. PGP
• B. SMTP
• C. GPG
• D. S/MIME

Correct answer: C

Explanation

The correct answer is C, GPG, which is a free implementation of the OpenPGP standard that utilizes both symmetric and asymmetric cryptography. PGP is a related standard but is not the specific software mentioned. SMTP is a protocol for sending emails and does not pertain to encryption, while S/MIME is another encryption standard that does not fit the description of a free implementation of OpenPGP.