GIAC Certified Intrusion Analyst (GCIA) — Question 3

Which of the following is known as a message digest?

Answer options

• A. Hash function
• B. Hashing algorithm
• C. Spider
• D. Message authentication code

Correct answer: A

Explanation

The correct answer is A, as a hash function produces a fixed-size string of bytes that is unique to the input data, commonly known as a message digest. Options B and D are related concepts but do not directly refer to the output itself, while C, Spider, is unrelated to hashing.