Question: Consider the El Gamal Public Key Encryption scheme construction 1 2 . 1 6 . Suppose the same message m is encrypted twice using this

Consider the El Gamal Public Key Encryption scheme construction 12.16. Suppose the same message m is encrypted twice using this scheme. What is the probability that the ciphertext will be the same in both cases? Explain.
[Let y1 and y2 denote the choice of y in the two encryptions of m. Observe that since g is a generator gy1 can equal gy2 if and only if y1=y2.]
Consider the El Gamal Public Key Encryption

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