Cybersecurity Cryptology Chapter 4

What is cryptography?

• The study of secret codes and ciphers

• The study of computer programming languages

• The study of artificial intelligence

• The study of quantum mechanics

What is the purpose of cryptography?

• To hide information from unauthorized access

• To create complex mathematical algorithms

• To analyze data patterns

• To develop secure computer networks

What is a key in cryptography?

• A secret code used to encrypt messages

• A mathematical algorithm used for decryption

• A physical device used for storing encrypted data

• A type of cipher used in symmetric encryption

Which type of cryptography uses a single key for both encryption and decryption?

• Symmetric cryptography

• Asymmetric cryptography

• Hash cryptograph

• Quantum cryptography

Which type of cryptography uses a pair of keys, one for encryption and one for decryption?

• Symmetric cryptography

• Asymmetric cryptography

• Asymmetric cryptography

• Asymmetric cryptography

What is a hash function in cryptography?

• A mathematical algorithm used for encryption

• A type of cipher used in symmetric encryption

• A one-way function that converts data into a fixed-size string of characters

• 6. A physical device used for storing encrypted data

Which cryptographic algorithm is widely used for secure internet communication?

• RSA

• RSA

• AES

• SHA-256

What is a brute-force attack in cryptography?

• A type of encryption algorithm

• A method of breaking a cipher by trying all possible keys

• A technique used in asymmetric cryptography

• A technique used in asymmetric cryptography

What is steganography?

• The study of secret codes and ciphers

• The study of computer programming languages

• The study of hiding information within other data or media

• The study of quantum mechanics

What is the purpose of a digital signature in cryptography?

• To encrypt sensitive information

• To verify the authenticity and integrity of a message

• To verify the authenticity and integrity of a message

• To analyze data patterns