Which two options correctly describe how HMAC differs from hashing? (Choose two.
Question
Which two options correctly describe how HMAC differs from hashing? (Choose two.
Solution
HMAC (Hash-based Message Authentication Code) differs from regular hashing in two main ways:
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Use of a Secret Key: Unlike regular hashing, HMAC involves the use of a secret key for hashing data. This key is combined with the message in a way that is unique to HMAC, providing an extra layer of security.
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Data Integrity and Authenticity: While both hashing and HMAC provide data integrity (ensuring that data has not been tampered with), HMAC also provides data authenticity. This means that it can verify the source of the data, ensuring that it came from the expected sender.
So, the two options that correctly describe how HMAC differs from hashing are the use of a secret key and the provision of data authenticity in addition to data integrity.
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