What Block Cipher Mode of Operation Encrypts Plaintext and Computes

question 18

Multiple Choice

What block cipher mode of operation encrypts plaintext and computes a message authentication code to ensure that the message was created by the sender and that it was not tampered with during transmission?

• A)Electronic Code Book
• B)Galois/Counter
• C)Cipher Block Chaining
• D)Counter

---

Definitions:

Dome of Heaven

An architectural and cosmological concept representing the sky dome or the heavens as a dome-shaped structure, often symbolizing the universe.

Hypostyle Prayer Hall

A large room filled with rows of columns that support the roof, commonly found in mosques and representing a key element in Islamic architecture.

Horseshoe-Shaped Arches

Architectural elements that resemble a horseshoe, wider than they are tall, often used in Islamic and Moorish architecture.

Visigoths

A branch of the Germanic tribes that invaded the Roman Empire and settled in what is now Spain and Portugal in the 5th century.