We as a certificate subscriber, registration information, Who am I, what am I Organization -> CSR issued by CA, CA to generate public and private key, to retain public, people get subscription, deployed to the web server, the browser makes a request requesting a server certificate, the public key certificate server to the browser, the browser to verify the CA certificate -> browser with the encrypted random value to the server public key -> as a synchronization server private key to decrypt the encrypted secret using the random value with key
DV domain names point to the server is the server you are applying for a certificate, you can obtain a certificate, issued by other CA certificate validation email
OV business name is correct, a few days
EV 。。。
Verify the certificate chain primary certificate -> Certificate II -> root certificate
