Use of ca certificate: After obtaining CA certificate, double-click the CA certificate in the computer to complete the import and installation;
The purpose of ca certificate is that enterprises must ensure the security of the network if they want to use the network to authenticate invoices, file tax returns and file tax returns through the network. Ca certificate is a network security channel recommended by the national tax department.
A CA also has a certificate (including a public key and a private key). Public users on the Internet trust CA by verifying its signature, and anyone can get CA's certificate (including public key) to verify the certificate issued by it.