2.4. Personal Identification Number Keypads (PIN Pads)

Class Name PIN

Class Identifier WFS_SERVICE_CLASS_PIN = 4

The WOSA/XFS PIN pad service defines 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.

The current revision of the service class specification does not claim to adhere to any security standards, any security standards supported will be vendor dependent.

Important Notes:

• The current revision of the service class 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 the current revision of the service class specifications.