Table 3. Enumerated common functions for FIS.

Enumeration of commonly used functions in the functional interaction structure, including data process and communication functions and cryptography-related functions.

Classes	Functions
Data process and communication functions	process plain data; transmit data to; receive data from; validate received data (according to specifications, e.g., format and value range)
Cryptography-related functions	encrypt plain text by x; decrypt cipher text by x; calculate signature; validate signature; calculate MAC, validate MAC; other functions (e.g., key management related function, depends on available information)