CompTIA Security+ (SY0-501) — Question 208

A security analyst is working on a project that requires the implementation of a stream cipher. Which of the following should the analyst use?

Answer options

• A. Hash function
• B. Elliptic curve
• C. Symmetric algorithm
• D. Public key cryptography

Correct answer: C

Explanation

The correct answer is C, as stream ciphers are a type of symmetric algorithm that encrypt data one bit at a time. Options A, B, and D are not suitable for implementing stream ciphers; A is for data integrity, B relates to key exchange, and D involves asymmetric encryption.