Your installation can define exit routines to supplement the Integrated Cryptographic Service Facility (ICSF), the key generator utility program (KGUP), and the PCF conversion program. Exit routines are programs that programmers at your installation write to allow you to “customize” an application. Your installation may need to perform specific functions with the data that your cryptographic application manipulates. At various points in processing, ICSF, KGUP, and the PCF conversion program release control to an exit routine.
This topic describes the various types of exit points in ICSF and the functions that your exits can perform.