alleryStart learning →A MAC uses which kind of key?
ASympathetic
BSynthetic
CSymmetric
DSystematic
Answer & Solution
Correct answer: C. Symmetric
1. A MAC is not a digital signature.
2. The same key both makes and checks it.
3. A MAC uses an approved security function and a symmetric key.
4. So the answer is symmetric.
_Source: NIST SP 800-175B Rev. 1, 'Guideline for Using Cryptographic Standards in the Federal Government'_
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