Podcast
Questions and Answers
What are the two basic goals of cryptography?
What are the two basic goals of cryptography?
- Message privacy and key generation
- Symmetric encryption and digital signatures
- Data integrity and message authentication
- Data authenticity and data privacy (correct)
Which encryption scheme is also known as public-key encryption?
Which encryption scheme is also known as public-key encryption?
- Symmetric encryption
- Message privacy
- Message integrity
- Asymmetric encryption (correct)
What are the three parts of a block cipher application?
What are the three parts of a block cipher application?
- Data privacy, data integrity, and data authenticity
- Plaintext, ciphertext, and key
- Symmetric keys, asymmetric keys, and MAC
- Encryption, key generation, and decryption (correct)
What is the size of a DES block in bits?
What is the size of a DES block in bits?
Which security goal of cryptography ensures that an adversary should not be able to modify a message?
Which security goal of cryptography ensures that an adversary should not be able to modify a message?
What is the purpose of a message authentication code (MAC) in cryptography?
What is the purpose of a message authentication code (MAC) in cryptography?
What is the correct viewpoint regarding block ciphers?
What is the correct viewpoint regarding block ciphers?
What is the common element for achieving confusion in encryption?
What is the common element for achieving confusion in encryption?
According to Claude Shannon, what is diffusion in encryption?
According to Claude Shannon, what is diffusion in encryption?
Which encryption algorithm is often used for achieving diffusion?
Which encryption algorithm is often used for achieving diffusion?
What did Claude Shannon propose as important operations for building strong encryption algorithms?
What did Claude Shannon propose as important operations for building strong encryption algorithms?
Which characteristic should determine the amount of labor appropriate for encryption and decryption according to Shannon's guide?
Which characteristic should determine the amount of labor appropriate for encryption and decryption according to Shannon's guide?
What is the primary purpose of message authentication codes?
What is the primary purpose of message authentication codes?
What is the purpose of authenticated encryption?
What is the purpose of authenticated encryption?
What is the main property of modern block ciphers achieved through diffusion?
What is the main property of modern block ciphers achieved through diffusion?
What should determine the amount of labor appropriate for encryption and decryption according to Shannon's guide?
What should determine the amount of labor appropriate for encryption and decryption according to Shannon's guide?
