[Estimate time to solve this question is 5 minutes] Вов ALICE Yes Message (m) Hash Function MD Alice public-key Alice private-key Hash Same? Function MD Public-key Decryption Public-key Encryption MD...

Extracted text: [Estimate time to solve this question is 5 minutes] Вов ALICE Yes Message (m) Hash Function MD Alice public-key Alice private-key Hash Same? Function MD Public-key Decryption Public-key Encryption MD E( Private-Keyalice MD) + message It is very handy and practical to use the digital signature scheme that is shown in the scenario above as part of the network security protocol suits. But it has two very specific weaknesses that can be solved using the MAC scheme. Explain these 2 weaknesses that can be solved using the MAC scheme.