                                                   (or)
                                                (XPUF_REGEN_ON_DEMAND)
 PUF helper data can be generated by PUF registration or PUF on-demand
 regeneration. The user can configure XPUF_KEY_GENERATE_OPTION as either
 XPUF_REGISTRATION or XPUF_REGEN_ON_DEMAND to select the mode of PUF operation
 to generate helper data</pre><pre> #define XPUF_READ_HD_OPTION                    (XPUF_READ_FROM_RAM)
                                                        (o