Which of the following cryptographic methods is primarily used to assure integrity?

A.
One-way function

B.
One-way hash

C.
Diffusion

D.
Confusion

Explanation:
Answer B is correct; a one-way hash is encryption using an algorithm without a key.

Incorrect Answers and Explanations: A, C, and D: Answers A, C, and D are incorrect. One-way function is used in asymmetric encryption. Confusion and diffusion are cornerstone cryptographic concepts embodied in all types of cryptography.