2. Personal Identification Number (PIN) Keypads

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 chip card

If the PIN Pad device has local display capability, display handling should be handled using the Text Terminal Unit (TTU) interface.

This specification does not claim to adhere to any security standards, any security standards supported will be vendor dependent.

Important Notes:

• This revision of this specification does not define key management procedures; key management is vendor-specific.

• Key space management is customer-specific, and is therefore handled by vendor-specific mechanisms.

• Only numeric PIN pads are handled in this specification.