| Subject | English | Portuguese |
| law, IT | authority hierarchy | hierarquia de autoridade |
| comp., MS, Braz. | certification authority hierarchy | hierarquia de autoridade de certificação (A hierarchy in which the roles of the certification authority are separated into one root CA and one or more subordinate CAs) |
| comp., MS | certification authority hierarchy | hierarquia de autoridades de certificação (A hierarchy in which the roles of the certification authority are separated into one root CA and one or more subordinate CAs) |