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Definition of Public Key Infrastructure

Definition of computer security terms: Public Key Infrastructure


Public Key Infrastructure is a set of servers, software, protocols and application programs used to manage the Private Key's and Public Key's of a group of users. Users are generally able to create and update their own key pairs, and a Certificate Authority is used to sign new Public Key's. Some mechanism is made available by which users may conveniently and reliably retrieve and use their own Private Key's and other users' Public Key's.