Thx. For one API in my company, there is only root and intermediate certificates are present in the jks file but the leaf certificate is not. Would encryption w

Thx. For one API in my company, there is only root and intermediate certificates are present in the jks file but the leaf certificate is not. Would encryption work without a leaf certificate? In another instance to connect to a server, only the root certificate is present in the trust store. Does it mean encryption can be performed with just the root certificate.