Section: 13.2.3.1 Overview of protection policies
Content: The protection policy suite is comprised of a data-type encryption policy and a modification policy. Together, these policies determine which part of a certain message shall be confidentiality protected and which part of a certain message shall be modifiable by IPX providers. The SEPP shall apply the protection policies for application layer protection of messages on the N32-f interface. There are two types of protection policies, namely: - Data-type encryption policy: specifies which data types need to be confidentiality protected; - Modification policy: specifies which IEs are modifiable by intermediaries. In addition, there is a mapping between the data-types in the data-type encryption policy and the IEs in NF API descriptions which is given in a NF-API data-type placement mapping.