Q:

In CMAC, which scenario is a different key K2 is used instead of K1?

0

In CMAC, which scenario is a different key K2 is used instead of K1?


  1. If the tag is larger than the key length
  2. If the tag is shorter than the key length
  3. In the last step of the algorithm
  4. If the plaintext/message is not an integer multiple of the cipher clock length

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 (d).If the plaintext/message is not an integer multiple of the cipher clock length

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