(c) CRC is used in Wired Equivalent Privacy (WEP) operation. A 8-bit message with 8- bit CRC is being encrypted with a simplified WEP key of 0110 0110. The encrypted message is 1000 0111. The encrypted CRC is 1001 0110. (i) (ii) (iii) Determine the decrypted data appended with the decrypted CRC after using the WEP key at the received end. [2 marks] After receiving the data appended with the CRC in (i), perform the modulo-2 division with the same divisor of 100110001. Determine the remainder in the division. You need to show your steps in getting the answer. [5 marks] The Initialization Vector (IV) in WEP is a 24-bit field, which is sent in the clear text part of a message. Calculate the minimum time in seconds for ensuring the reuse of the same key stream if an access point constantly sends 900 byte packets at 65 Mbps. [3 marks]