Certified Blockchain Solutions Architect (CBSA) — Question 4

Which of the following is considered the most popular public key encryption algorithm?

Answer options

• A. RSA
• B. AES
• C. MD5
• D. PGP

Correct answer: D

Explanation

PGP is widely recognized as the most popular public key encryption algorithm because it combines both symmetric and asymmetric encryption methods. RSA is also a well-known public key algorithm but is not as widely used for email encryption as PGP. AES is a symmetric encryption algorithm, and MD5 is a hashing function, making them unsuitable answers.