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多項(xiàng)選擇題

Which of the following statements about MD5 Routing Updates authentication is valid? ()

A.The MD5 algorithm inputs the routing updates of arbitrary length and outputs a 128-bit hash
B.The MD5 algorithm inputs the routing updates of every 64bit length and outputs an 8-bit hash
C.Multiple keys are supported
D.Routing updates packets are delivered in encrypted messages
E.Shared secret keys are delivered in encrypted messages

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