Cryptographic Building Blocks Quiz

What is the purpose of stream ciphers?

• Generate authentication tags

• Provide confidentiality

• Ensure data integrity

• Encrypt fixed-length blocks

Which encryption algorithm uses a 16-round Feistel network?

• Triple-DES

• Data Encryption Standard (DES)

• Electronic Codebook (ECB)

• Advanced Encryption Standard (AES)

What is the main security goal of Message Authentication Codes (MACs)?

• Indistinguishability under adaptive chosen ciphertext attack

• Integrity and data origin authentication

• Existential unforgeability under chosen message attack

• Confidentiality of data

Which type of function generates a binary string that is indistinguishable from random?

• Hash Functions

• Message Authentication Codes

• Pseudorandom Functions

• Symmetric Cryptography

What is the primary use of Hash Functions?

• Generate authentication tags

• Ensure data integrity

• Provide confidentiality

• Hash an arbitrary length binary string into a fixed length binary string

Which mode of operation is suitable for streaming media and disk encryption?

• Block ciphers vs. stream ciphers

• Electronic Codebook (ECB) mode

• Cipher Block Chaining (CBC) mode

• Modes of operation

What is the impact of Quantum Grover search on key length?

• Halves the key length

• Does not affect the key length

• Increases the key length by 25%

• Doubles the key length

Which encryption algorithm uses a substitution-permutation network?

• Advanced Encryption Standard (AES)

• Data Encryption Standard (DES)

• Electronic Codebook (ECB)

• Triple-DES

What is the common technique for constructing an arbitrary-length hash function?

• Merkle–Damgård Construction

• Linear feedback shift registers

• Feistel network

• Rijndael

What is the primary purpose of Pseudorandom Functions?

• Generate authentication tags

• Generate random binary strings

• Provide confidentiality and key generation

• Ensure data integrity