Question: (1 point) Alice and Bob are using the ElGamal cipher with the parameters p = 29 and a = 2. Alice makes the mistake of

(1 point) Alice and Bob are using the ElGamal

(1 point) Alice and Bob are using the ElGamal cipher with the parameters p = 29 and a = 2. Alice makes the mistake of using the same ephemeral key for two plaintexts, x, and x2. The eavesdropper Eve suspects that x = 25. She sees the two ciphertexts y = 24 and y2 = 22 in transit; these are the encryptions of x, and X2, respectively. a) What is the masking key km? 23 b) What is the plaintext x2? 20 (1 point) Alice and Bob are using the ElGamal cipher with the parameters p = 71 and a = 7. Suppose Alice is observed sending public ephemeral key ke = 68 and Bob sends public key B = 18. Their private keys are i = 61 and d = 58, respectively. a) What is the masking key km? b) What is the encryption of x = 28

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