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which of the following should be used to decrypt data a…

Company A sends a PGP encrypted file to company B. If company A used company B’s public key to encrypt
the file, which of the following should be used to decrypt data at company B?

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A.
Registration

B.
Public key

C.
CRLs

D.
Private key

Explanation:
In a PKI the sender encrypts the data using the receiver’s public key. The receiver decrypts the data using his
own private key.
PKI is a two-key, asymmetric system with four main components: certificate authority (CA), registration
authority (RA), RSA (the encryption algorithm), and digital certificates. Messages are encrypted with a public
key and decrypted with a private key.

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