Solutions to sign certificates
问题 For a system with multiple application servers and multiple clients, I would like to introduce mutual authentication as well as other security protections provided by TLS. The servers and clients may be located on different networks as well as on the same network. Each entity (client or server) has its own keystore that stores its private/public key pair and a X.509 certificate that wraps the public key. But, at this point, the certificate is self-signed. So, it will not be verified by the