Question: ( 3 ) . In the ElGamal cryptosystem Alice and Bob use p = 1 7 and = 3 . Bob chooses his key to

(3). In the ElGamal cryptosystem Alice and Bob use p=17 and =3. Bob chooses his
key to be a=6 so =15. Alice sends the cipher text (r,t)=(7,6). Determine the
plaintext m.
(3). In the ElGamal cryptosystem Alice and Bob use p=17 and

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