Alice and Bob use the ElGamal scheme with a common prime q= 131 and a primitive root a = 6. Let Bob's public key be YB= 3. A. What is the ciphertext of M=9 if Alice chooses the random integer k=4? B....

Alice and Bob use the ElGamal scheme with a common prime q= 131 and a primitive root a = 6. Let Bob's public<br>key be YB= 3.<br>A. What is the ciphertext of M=9 if Alice chooses the random integer k=4?<br>B. If Alice uses the same k to encrypt two messages M1 and M2 as (12, 65) and (12, 64), what is the relation<br>between Mj and M2?<br>

Extracted text: Alice and Bob use the ElGamal scheme with a common prime q= 131 and a primitive root a = 6. Let Bob's public key be YB= 3. A. What is the ciphertext of M=9 if Alice chooses the random integer k=4? B. If Alice uses the same k to encrypt two messages M1 and M2 as (12, 65) and (12, 64), what is the relation between Mj and M2?

Jun 08, 2022

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Alice and Bob use the ElGamal scheme with a common prime q= 131 and a primitive root a = 6. Let Bob's public key be YB= 3. A. What is the ciphertext of M=9 if Alice chooses the random integer k=4? B....

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