What is a Hashed Message Authentication Code (HMAC)?
A.
Encrypting a hash with a symmetric cipher
B.
Encrypting a hash with an asymmetric cipher
C.
A message digest
D.
A checksum
Explanation:
Answer A is correct; a Hashed Message Authentication Code is a hash encrypted with a preshared symmetric key.Incorrect Answers and Explanations: B, C, and D: Answers B, C, and D are incorrect. A digital signature encrypts a hash with an asymmetric cipher. A message digest is another name for a hash. A checksum is a simple hash.