W10: CP05 Quiz (CSSD0223)

What is the primary goal of cryptography?

• Data breach
• Data integrity
• Data replication
• Data redundancy

Which discipline of cryptology involves developing and using codes for private communication?

• Cryptanalysis
• Cryptosynthesis
• Cryptography
• Cryptobotany

Which type of cipher rearranges letters without replacing them?

• Substitution cipher
• Transposition cipher
• Polyalphabetic cipher
• Block cipher

What method does a cryptanalyst use when having access to only the ciphertext of several messages?

• Brute-force
• Known-plaintext
• Chosen-plaintext
• Ciphertext

What is the primary factor ensuring the security of encryption in modern technology?

• Complexity of the algorithm
• Length of the plaintext
• Length of the key
• Availability of the ciphertext

What cryptographic function is used to verify and ensure data integrity?

• Encryption
• Decryption
• Hashing
• Encoding

Which property must a cryptographic hash function possess?

• Collision-free
• Reversible
• Variable output length
• Ease of computation for any input

Which hashing algorithm is similar to MD5 hash functions?

• SHA-256
• SHA-512
• SHA-1
• MD5

What additional element does HMAC use to add authentication to data integrity?

• Secret key
• Public key
• Private key
• Hash value

Which encryption algorithm uses the same key for both encryption and decryption?

• Symmetric encryption
• Asymmetric encryption
• Public-key encryption
• Private-key encryption