CWA 16926-65:2020

This section describes the application program interface for personal identification number keypads (PIN pads) and other encryption/decryption devices. This description includes definitions of the service-specific commands that can be issued, using the WFSAsyncExecute, WFSExecute, WFSGetInfo and WFSAsyncGetInfo functions.
This section describes the general interface for the following functions:
•  Administration of encryption devices
•  Loading of encryption keys
•  Encryption / decryption
•  Entering Personal Identification Numbers (PINs)
•  PIN verification
•  PIN block generation (encrypted PIN)
•  Clear text data handling
•  Function key handling
•  PIN presentation to chipcard
•  Read and write safety critical Terminal Data from/to HSM
•  HSM and Chipcard Authentication
•  EMV 4.0 PIN blocks, EMV 4.0 public key loading, static and dynamic data verification