SSL:SSL (Secure Sockets Layer) is the secure socket layer, and its successor Transport Layer Security (TLS) is a security protocol that provides security and data integrity for network communications. TLS and SSL encrypt the network connection at the transport layer.
HTTPS:HTTPS (Hyper Text Transfer Protocol over Secure Socket Layer) is an HTTP channel for security. It is a secure version of HTTP, that is, an SSL layer is added under HTTP.
SSL digital certificate (SSL certificate):A type of digital certificate, similar to an electronic copy of a driver’s license, passport and business license. Because it is configured on the server, it is also called an SSL server certificate. The SSL certificate is to comply with the SSL protocol, and is issued by a trusted digital certificate authority CA (such as GlobalSign, wosign) after verifying the identity of the server, with server identity verification and data transmission encryption functions.
CA:Certificate Authority (CA, Certificate Authority). The CA is the agency responsible for issuing certificates, certifying certificates, and managing issued certificates. After the user submits an application to the CA, the CA is responsible for reviewing the user's information, and then uses the private key to \"sign\" the key information and publish the corresponding public key. The client can use the public key to verify the signature.
CSR:CSR (Certificate Signing Request) is the certificate request file, that is, when the certificate applicant applies for the digital certificate, the CSP (encryption service provider) generates the certificate request file while generating the private key. The certificate applicant only needs to submit the CSR file to After the certificate authority, the certificate authority uses its root certificate private key signature to generate the certificate public key file, that is, the certificate issued to the user.
DV certificate:Domain-level verification certificate: Class 1. Suitable for small websites.
OV certificate:Certificate of enterprise authentication: Class 3. Valid corporate qualifications such as business licenses need to be submitted. Suitable for enterprises and institutions.
EV certificate:Enhanced verification certificate: Class 4. It is necessary to submit valid business qualifications such as business licenses for the most stringent verification. It belongs to the highest level SSL certificate. The address bar of the browser is marked in green and displays the name of the certified company. Suitable for Internet companies, large websites, government, finance, insurance and other industries.