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. If adopted, citizens would be granted a single certificate that could be used in different places. For example, the same certificate a person uses to conduct banking transactions could also be used for communications with the government. Companies rolling out PKI generally take an incremental approach, according to O'Higgins. Internal security is put into place first.