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Karen encrypts data with a private key and sends it to Bob. By doing this Karen is proving ____________.

Karen encrypts data with a private key and sends it to Bob. By doing this Karen is proving ____________.

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A.
Authenticity

B.
Receipt

C.
Authorization

D.
Confidentiality

Explanation:
When using a private key to encrypt data (message digest) this proves
that the message came from the owner of the private key, which is authenticity.


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