Question $21$

$2\mathrm{.}5$ Points

Besides the primary mode of operation, another important mode, XTS$-$AES, has been standardized by the Blank $1$ Security in Storage Working Group.$$

The output of the encryption function is fed back to the shift register in OFB mode, whereas in Blank $2$ mode, the ciphertext unit is fed back to the shift register.$$

The Blank $3$ method is ideal for a short amount of data and is the appropriate mode to use if you want to securely transmit a DES or AES key.$$

The Blank $4$ block cipher mode of operation is a general$-$purpose block$-$oriented transmission useful for high$-$speed requirements.$$

The Blank $5$ standard describes a method of encryption for data stored in sector$-$based devices where the threat model includes possible access to stored data by the adversary.$$

A public$-$key encryption scheme has Blank $6$ ingredients.$$

The Blank $7$ scheme is a block cipher in which the plaintext and ciphertext are integers between $0$ and n $-1$ for some n$.$

Blank $8$ depend on the running time of the decryption algorithm.$$

As part of the storage encryption, Blank $9$ encryption requires different keys for different files.$$

A Blank $10$ is when two sides cooperate to exchange a session key.$$