CASE CASE Cryptography & Data Protection

Question 1

What is the primary characteristic of symmetric encryption?

Accepted Answer

It uses the same key for both encryption and decryption

Answer

Symmetric encryption uses a single shared secret key for both encrypting and decrypting data.

Question 2

Which NIST-approved algorithm is the current symmetric block cipher standard?

Accepted Answer

AES

Answer

AES (Advanced Encryption Standard) is the NIST-approved symmetric block cipher adopted as the US encryption standard in 2001.

Question 3

What key length does AES-256 use?

Accepted Answer

256 bits

Answer

AES-256 uses a 256-bit key, providing the highest security level among AES variants.

Question 4

What does TLS protect in application security?

Accepted Answer

Data in transit between communicating parties

Answer

TLS (Transport Layer Security) encrypts data transmitted over networks to protect confidentiality and integrity in transit.

Question 5

Why is symmetric encryption preferred over asymmetric for bulk data encryption?

Accepted Answer

It is significantly faster and more efficient for large volumes

Answer

Symmetric encryption is computationally faster than asymmetric encryption, making it suitable for encrypting large datasets.

(CASE) Certified Application Security Engineer Practice Test