An SSL certificate is a digital certificate that is used to provide encryption and authentication functions in network transmission, thereby protecting the security and integrity of data. Formal SSL certificates are mostly issued by authoritative certificate authorities (CAs), such as Certum, DigiCert, Sectigo, etc., which can be used to establish a secure encrypted connection between a web server and a client. Learn what an SSL certificate is with SSL Shield today.
1.SSL digital certificates work by using the encryption and decryption process between public and private key pairs to ensure that data cannot be stolen or tampered with during transmission. When a client connects to an SSL-enabled server, the server sends its certificate to the client, which contains the server's public key and other information. The client verifies the server's certificate to check whether the server's identity is true and valid. If the authentication is successful, a secure encrypted connection will be established between the client and the server, and all data transmissions will be encrypted, thus ensuring the security of the data.
2.There are many SSL digital certificate products, and in order to facilitate users to find the right digital certificate, SSL certificate products are classified. First of all, according to the number of protected domain name sites, SSL certificates are divided into single-domain SSL certificates, multi-domain SSL certificates, wildcard SSL certificates and multi-domain wildcard SSL certificates, as well as IP certificates prepared for sites with only public IP addresses and signing certificates prepared for software.
3.Secondly, SSL certificates are divided into three types: DV basic SSL certificates, OV enterprise SSL certificates, and EV enhanced SSL certificates. DV basic SSL certificate is an entry-level SSL certificate, ** is not high, the application is only to verify the ownership of the domain name, suitable for individuals or small and medium-sized enterprises and institutions, such as Sectigo's DV basic wildcard SSL certificate, **500 yuan, can protect the main domain name and all subdomains under the main domain name. Both the OV Enterprise SSL certificate and the EV Enhanced SSL certificate need to verify the ownership of the domain name and the authenticity of the enterprise or institution applying for it, so only enterprises and institutions can apply for it.