题目内容

Which two steps does a receiver perform to validate a message using HMAC？（）

A. decrypts the received MAC using a secret key
B. compares the computed MAC vs. the MAC received
C. authenticate the receivedmessage using the sender’s public key
D. look up the sender’s public key
E. extracts the MAC from the receivedmessage thenencrypts the received message with a secret keyto producethe MAC
F. Computes the MAC using the receivedmessage and a secret key as inputs to the hash functio

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A. 正确
B. 错误

A. 工业控制，容错
B. 专业，个人
C. 超级，网络
D. 模拟，数字

A. 正确
B. 错误

A. 上须触线终点为：7；下须触线终点为：-3.5
B. 上须触线终点为：8.5；下须触线终点为：-3.5
C. 上须触线终点为：7；下须触线终点为：-4
D. 上须触线终点为：8.5；下须触线终点为：-4