A CSR (Certificate Signing Request) is submitted to a Certificate Authority (CA), and domain name, company name, public key, etc. are encoded in the CSR.
A valid certificate can be reissued. When a certificate is reissued, the old certificate cannot be used. If you lose your private key or password, you need to reissue it.
In order to issue a certificate, the validation process of a certification authority is required. The validation type differs depending on the products, and there are three types: DV, OV, EV.
This is a step-by-step guide on how to install SSL certificates on common web servers and hosting platforms, Operating Systems.
It is like a banner provided by a certification authority to inform that an SSL certificate has been installed on the accessed website.
SSL certificates have an expiration date. The period is one year. Renewal is required before the certificate expires so that users can safely visit the website.