CISA Certified Information Systems Auditor – Question1623

Upon receipt of the initial signed digital certificate the user will decrypt the certificate with the public key of the:

A.
registration authority (RA).
B. certificate authority (CA).
C. certificate repository.
D. receiver.

Correct Answer: B

Explanation:

Explanation:
A certificate authority (CA) is a network authority that issues and manages security credentials and public keys for message encryption. As a part of the public key infrastructure, a CA checks with a registration authority (RA) to verify information provided by the requestor of a digital certificate. If the RA verifies the requestor’s information, the CA can issue a certificate. The CA signs the certificate with its private key for distribution to the user. Upon receipt, the user will decrypt the certificate with the CA’s public key.