Specifications

Steps for Implementing a Secure Configuration Flow Page 9
Using the Design Security Features in Altera FPGAsJune 2012 Altera Corporation
1 For 28-nm FPGA device, only one 256-bit key is generated and programmed instead
of the two 256-bit sequence. Only one key file is required for the 256-bit key. Unlike
the 40-nm FPGA device, the other 256-bits are hard coded within the 28-nm FPGAs.
Using the .key file option allows you to specify one or two key files in the
corresponding drop-down box. You may use different files for the Key 1 and Key 2
fields, or use one .key file for both. (Figure 4).
The .key file is a plain text file in which each line represents a key unless the line starts
with "#". The "#" symbol is used to denote comments.
Figure 3. SOF File Properties: Bitstream Encryption Dialog Box
List the path and
file name for
the.ekp file
Agree and
acknowledge the
disclaimer
Figure 4. Use Key File Option