This blog entry covers frequently asked questions about FPGA encryption and provides a guide to generating an encrypted bitstream using non-project mode.

For in-depth detail, refer to (UG570) the UltraScale™ Architecture Configuration user guide and XAPP1267 Using Encryption & Authentication to secure UltraScale™/UltraScale+™ FPGA .

The obfuscated keys flow is only applicable for UltraScale and UltraScale+ devices, although Bootgen can be used to generate an encrypted bitstream for 7 Series and later devices.