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Digest created by a hash function is normally called a

  • A.Modification detection code (MDC)
  • B.
    Modify authentication connection
  • C.Message authentication control
  • D.
    Message authentication cipher

Answer: A

Correct answer: Modification detection code (MDC)

A plain hash, computed without a key, is a modification detection code: it detects change but proves nothing about origin, since anyone can recompute it. Adding a key turns it into a MAC.

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