CompTIA Security+ (SY0-501) — Question 642

Using an ROT13 cipher to protect confidential information for unauthorized access is known as:

Answer options

• A. steganography.
• B. obfuscation.
• C. non-repudiation.
• D. diffusion.

Correct answer: B

Explanation

Obfuscation is a technique used to make information unclear or difficult to understand, which aligns with the purpose of using an ROT13 cipher. The other options, such as steganography, focus on hiding data rather than transforming it, while non-repudiation refers to ensuring that a party cannot deny the authenticity of their signature or message, and diffusion relates to spreading out the influence of plaintext over the ciphertext.