Is there a way to check whether or not an FPGA has had it encryption key programmed into the device? Maybe it can send a message to Quartus or set an output pin as a flag for example. This would be useful because I'm struggling to program encryption keys into a batch of FPGA and just need to confirm there's no key already programmed. FPGA is Stratix II EP2SGX30 and I'm using an Ethernet Blaster II. Any help appreciated, thanks.