User A and B exchange public keys and use the other person’s public key to encrypt messages back to each other. Only User A has the Private Key that can decrypt any the messages encrypted with User A’s matching public key.
In the case where a web server has a highly secure area and wishes to give restricted and controlled access to the information stored on it, then usernames and passwords do not offer sufficient protection. Adding two factor authentications to this insecure login method with a Digi-Access™ certificate solves this problem.
There are two types of Digi-Access™ authentication systems: