According to Brian O'Higgins, executive vice president and chief technology officer, Entrust, once these types of products are in place, they will be transparent to users and application writers. There is no other technology out there that provides so much security bang for the buck. Digital signatures are the most important part. At one time, the security demands of the military were greater than those of business. Electronic commerce has changed this.
Solutions are the same for providing security for the military as with commercial work.
The model of security approaches has also changed. With protection software other than PKI, managers block systems access to everyone and then decide whom they will let into an area. PKI turns this on its head by providing security measures that are always on. Managers then choose who is denied access to a system. Canada is currently reviewing cross certification as one means to facilitate digital certificate issuance and management.