TESLA Scheme IV associates a key with a certain time interval instead of a certain packet. The sender uses the same K; to compute the MAC of all packets in the same interval i, and all packets in the same interval disclose the key Kid. Suppose d = 4 and the clock discrepancy between the sender and the receiver is negligible. Read the figure below and describe how to authenticate Pj. TA K; K+1 K+2 K 3 K+4 Ki+5 Kito K +7 . Pj+1 P/+2 P1+3 Pj+1 Pi+5 Pj+6 TESLA Scheme IV associates a key with a certain time interval instead of a certain packet. The sender uses the same K; to compute the MAC of all packets in the same interval i, and all packets in the same interval disclose the key Kid. Suppose d = 4 and the clock discrepancy between the sender and the receiver is negligible. Read the figure below and describe how to authenticate Pj. TA K; K+1 K+2 K 3 K+4 Ki+5 Kito K +7 . Pj+1 P/+2 P1+3 Pj+1 Pi+5 Pj+6