[fi] Add hardened check test

This commit adds the command handler for the
fi.ibex.char.hardened_check_eq_unimps test.

Signed-off-by: Pascal Nasahl <[email protected]>

fault_injection/configs/pen.global_fi.ibex.char.hardened_check_eq_unimps.cw310.yaml

@@ -0,0 +1,45 @@
+target:
+  target_type: cw310
+  fpga_bitstream: "../objs/lowrisc_systems_chip_earlgrey_cw310_0.1.bit"
+  force_program_bitstream: False
+  fw_bin: "../objs/sca_ujson_fpga_cw310.bin"
+  output_len_bytes: 16
+  target_clk_mult: 0.24
+  target_freq: 24000000
+  baudrate: 115200
+  protocol: "ujson"
+  port: "/dev/ttyACM1"
+fisetup:
+  fi_gear: "husky"
+  fi_type: "voltage_glitch"
+  # Voltage glitch width in cycles.
+  glitch_width_min: 5
+  glitch_width_max: 150
+  glitch_width_step: 3
+  # Range for trigger delay in cycles.
+  trigger_delay_min: 0
+  trigger_delay_max: 500
+  trigger_step: 10
+  # Number of iterations for the parameter sweep.
+  num_iterations: 10000
+fiproject:
+  # Project database type and memory threshold.
+  project_db: "ot_fi_project"
+  project_mem_threshold: 10000
+  # Store FI plot.
+  show_plot: True
+  num_plots: 100
+  plot_x_axis: "trigger_delay"
+  plot_x_axis_legend: "[cycles]"
+  plot_y_axis: "glitch_width"
+  plot_y_axis_legend: "[cycles]"
+test:
+  which_test: "ibex_char_hardened_check_eq_unimps"
+  # For this test, the expected result is actually a crash of the system. On
+  # a successful FI attack, this could be one result:
+  expected_result: '{"result1":0,"result2":1,"err_status":0,"alerts":0}'
+  # Set to true if the test should ignore alerts returned by the test. As the
+  # alert handler on the device could sometime fire alerts that are not
+  # related to the FI, ignoring is by default set to true. A manual analysis
+  # still can be performed as the alerts are stored in the database.
+  ignore_alerts: True

target/communication/fi_ibex_commands.py

@@ -268,6 +268,15 @@ def ibex_address_translation(self) -> None:
         time.sleep(0.01)
         self.target.write(json.dumps("AddressTranslation").encode("ascii"))
 
+    def ibex_char_hardened_check_eq_unimps(self) -> None:
+        """ Starts the ibex.fi.char.hardened_check_eq_unimps test.
+        """
+        # IbexFi command.
+        self._ujson_ibex_fi_cmd()
+        # CharHardenedCheck command.
+        time.sleep(0.01)
+        self.target.write(json.dumps("CharHardenedCheck").encode("ascii"))
+
     def read_response(self, max_tries: Optional[int] = 1) -> str:
         """ Read response from Ibex FI framework.
         Args: