Find the second plain text

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Reference no: EM13713932

Question -Assume Bob sends an Elgamal encrypted message to Alice. Wrongly, Bob uses the same parameter i for all messages. Moreover, we know that each of Bob's cleartexts start with the number x1 = 21 (Bob's ID). We now get the given ciphertexts

(kE,1 = 6,y1 = 17),

(kE,2 = 6,y2 = 25).

The Elgamal parameters are p = 31,á = 3,â = 18. Find the second plaintext x2.

Can somebody provide the answer for given question with example?

Reference no: EM13713932

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