Which of the following is a feature of a cryptographic hash function?

Which of the following is a feature of a cryptographic hash function?

• The output has a variable length
• Hashing requires a public and private key
• The hash input can be calculated given the output value
• The hash function has a one-way mathematical function

Explanation: A cryptographic hash function has the following properties:
The input can be any length.
The output has a fixed length.
The hash function is one-way and is not reversible.
Two different input values will almost never result in the same hash.

Exam with this question: Cybersecurity Essentials: Course Final Exam Answers