Labels:text | screenshot | font | rectangle OCR: DIAGRAM OF AN X.509 CERTIFICATE Certificate version: serial nunice and signature algoatran Certificate Authority (cc) name Certificate holder information: Nanie, Organitzavon, Andress tiolder's RSA Public Key X.509 3 Certificate Extensions Certificate Authority's Digital Signature Building Blocks. An X.509 certificate consists of several components, including the user's public key as well as the digital signature of the certificate authority.