When an X 509 certificate is issued by a certificate authority as a part of your FTP protocols, it contains certain information that is used for several verification purposes. Among these is the public key along with specific information concerning the owner of the certificate. This information can be used to verify the authenticity of the person or company that owns the certificate as well as to prove the authenticity of the certificate.
The X 509 Certificate Also Contains the Private Key
In order for either another computer or a human being to be able to verify the authenticity of the X 509 certificate, it also contains a private key that must be a complementary match to the public key. This private key is usually stored separately from the actual certificate for security reasons. This form of security is being implemented with a large measure of success in many business applications where security is of paramount importance.