שאלה | A new system was installed at the front gate of a secret organization. When a worker wishes to open the gate, they use an Android application that encrypts the command "Open" using AES with a shared symmetric key K1 The encrypted command (ciphertext) is then sent to the server. What is the problem with this algorithm?

A new system was installed at the front gate of a secret organization. When a worker wishes to open the gate, they use an Android application that encrypts the command "Open" using AES with a shared symmetric key K1 The encrypted command (ciphertext) is then sent to the server. What is the problem with this algorithm?

		The encrypted command remains the same every time, allowing an attacker to intercept and retransmit it to open the gate
		The symmetric key K1 is too weak to secure the message
		The AES encryption is not strong enough for this type of application
		The command "Open" should not be encrypted

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