You can’t just walk into a secure building and start tampering with the air conditioning or access control systems without proper authorization, such as a pre-registered ID from a trusted company. On the cyber-side of our smart buildings, however, security failings mean that hackers can virtually stroll into the building and access whichever system they choose. Like the human world, every connected device needs a digital certificate proving it is what it claims to be. Public key infrastructure (PKI) is emerging as the leading technology for device identity management in smart buildings. PKI is a series of roles, policies, and procedures required to create, manage, distribute, use, store & revoke digital certificates, thereby managing public-key encryption. The purpose of a PKI is to facilitate the secure electronic transfer of information for activities where simple passwords are inadequate for authentication and more rigorous proof is needed to confirm the identity of the people or devices involved […]