Which of the following is the definition of authentication?

(a) provides a stronger cryptographic result with a shorter key.
(b) the process of confirming the identity of a user. also, ensuring that a sender and recipient are who they say they are.
(c) the certificate authority’s list of invalid certificates.
(d) a protocol or an algorithm allowing two users to exchange a secret key over unsecure communications.

B

Explanation:

It is important because authentication process help the companies to protect our data, furthermore it prevents someone from stealing our identity and commiting a felony.

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