| Subject | English | Czech |
| comp., MS | Public Key Infrastructure certificate A system of digital certificates, certification authorities, and other registration authorities that verify and authenticate the validity of each party involved in an electronic transaction | certifikát PKI (Public Key Infrastructure) |
| comp., MS | public key infrastructure hierarchy | hierarchie infrastruktury veřejných klíčů (A hierarchy in which the roles of the certification authority are separated into one root CA and one or more subordinate CAs) |