Security Page (Device and Pin Options Dialog Box)

You open this page by clicking Assignments > Device > Device and Pin Options > Security.

Allows you to specify options for managing power, such as the bus speed mode and the slave address of the voltage regulator when in PMBus Master mode.

Table 1. Security Settings . For Intel^® Stratix^® 10 and Intel^® Agilex™ devices, specifies settings for programming bitstream authentication, encryption, scrambling, and other eFuse enabled security options. To access these settings, click Assignments > Device > Device and Pin Options > Security. Disabled options are unavailable for the current device or configuration mode.
Option	Description
Quartus Key File	Specifies the .qek file that the configuration bitstream requires for decryption. The Assembler generates this file in the location you specify.
Enable Programming Bitstream Encryption	Encrypts the programming bitstream, which requires decryption before use.
Encryption Key Select	Specifies the location that stores the .qek file. You can select either Battery Backup RAM or eFuses for storage.
Encryption Update Ratio	Specifies the ratio of configuration bits to the number of key updates for bitsream decryption. You can select either 31:1 (the key must change 1 time every 31 bits) or Disabled (no update required).
Enable Scrambling	Scrambles the configuration bitstream.
More Options	Opens the More Security Options dialog box for specifying additional security options.