(CA) (C&A) Official responsible for performing the comprehensive evaluation of the security features of an information system and determining the degree to which it meets its security requirements. (PKI) Trusted entity authorized to create, sign, and issue public key certificates. By digitally signing each certificate issued, the user's identity is certified, and the association of the certified identity with a public key is validated.
NIST SP 800-32
(CA) An authority trusted by one or more users to issue and manage X.509 Public Key Certificates and CARLs or CRLs.