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.

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 requestors 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 CAs public key.