CompTIA CASP+ (CAS-004) — Question 81

A software company is developing an application in which data must be encrypted with a cipher that requires the following:
✑ Initialization vector
✑ Low latency
✑ Suitable for streaming
Which of the following ciphers should the company use?

Answer options

• A. Cipher feedback
• B. Cipher block chaining message authentication code
• C. Cipher block chaining
• D. Electronic codebook

Correct answer: A

Explanation

The correct answer is A, Cipher feedback, as it supports an initialization vector and is designed for low latency and streaming applications. The other options, while secure, do not meet all the specified requirements; for example, Cipher block chaining (C) and Electronic codebook (D) have higher latency and are not as suitable for streaming as Cipher feedback.