Suppose Alice and Bob want to communicate using a Elliptic Curve Diffie-Hellman scheme. They choose to use the elliptic curve y² = x³ + 17x + 31 over the field F137 with the point P = (24, 17). 1 (a) Bob chooses a secret number ng Alice? = 7. What information should he send to (b) Bob receives the point QA = (93,86) from Alice. What is the shared secret key?

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