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QUESTION 3 10 The key schedule results in generating multiple keys from the one secret key. These multiple keys are used o in multiple sessions of communications one after the other. For example, if someone has 12 keys, they can use it for twelve video calls one after the other. osuch that one of them is picked up at random at a time some as private keys, some as public keys. for different rounds of encryption for the same plaintext to strengthen the cipher.

Explanation / Answer

Ans: Option 4 (for different rounds of encryption for theh same plaintext to strengten the cipher)

Key Schedule : This algorithm generates the various keys from a master key where each key is used in the de-ciphering the text in iteration of rounds.

Keys generated are used in different rounds accordingly.

There are various categories of generating round keys

Where one of them is one round key helps to genreate another round key, and in other it wont work.

Key scheduling is a cost consuming method where care should be taken :

are some of them.

This strengthens the Ciphering.

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