1In the basic CBC-MAC construction described, when MACing a 1024-bit message with a block cipher having a 128-bit block length, how many block cipher evaluations are performed if there is no padding?
2How does reducing the key size of the block cipher from 256 bits to 128 bits affect the number of block cipher evaluations required for the basic CBC-MAC construction?
3For the CBC-MAC construction described with a 256-bit key and 128-bit block length MACing a 1024-bit message (no padding), what is the total number of block cipher evaluations?
4In a chosen-ciphertext attack scenario, if the adversary modifies the ciphertext by flipping the last bit of 's' instead of the first bit, how should the decryption oracle's response be interpreted to still recover the secret bit 'b'?
5Consider the Authenticated Encryption Integrated Experiment. If an adversary A queries the decryption oracle with a ciphertext 'c' obtained from the encryption oracle and receives a 'rejection' or 'error', what can be inferred about the uniform bit?
6In the Encrypt-then-Authenticate construction, if Пм is strongly secure, which of the following statements is true regarding the Dec oracle in the Authenticated Encryption Integrated Experiment?
7Which of the following are key components of a virtual attendance report as described in the document?
8According to the Honor Code Statement, what action should a student take if they do not understand any portion of the lecture?
9In the context of CBC-MAC, what is the primary role of the key size?
10Which of the following is a characteristic of the Basic CBC-MAC construction when calculating a MAC tag?
