Question: The message REPLY TODAY is to be encrypted in the ElGamal cryptosystem and forwarded to a user with public key ( 4 7 , 5

The message REPLY TODAY is to be encrypted in the ElGamal cryptosystem and
forwarded to a user with public key (47,5,10) and private key k =19.
(a) If the random integer chosen for encryption is j =13, determine the ciphertext.
(b) Indicate how the ciphertext can be decrypted using the recipients private key

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