Add a couple of test cases against capsule image authentication for capsule-on-disk, where only a signed capsule file with the verified signature will be applied to the system.
Due to the difficulty of embedding a public key (esl file) in U-Boot binary during pytest setup time, all the keys/certificates are pre-created.
Signed-off-by: AKASHI Takahiro takahiro.akashi@linaro.org Reviewed-by: Simon Glass sjg@chromium.org Acked-by: Ilias Apalodimas ilias.apalodimas@linaro.org --- .../py/tests/test_efi_capsule/capsule_defs.py | 5 + test/py/tests/test_efi_capsule/conftest.py | 52 +++- test/py/tests/test_efi_capsule/signature.dts | 10 + .../test_capsule_firmware_signed.py | 254 ++++++++++++++++++ 4 files changed, 318 insertions(+), 3 deletions(-) create mode 100644 test/py/tests/test_efi_capsule/signature.dts create mode 100644 test/py/tests/test_efi_capsule/test_capsule_firmware_signed.py
diff --git a/test/py/tests/test_efi_capsule/capsule_defs.py b/test/py/tests/test_efi_capsule/capsule_defs.py index 4fd6353c2040..aa9bf5eee3aa 100644 --- a/test/py/tests/test_efi_capsule/capsule_defs.py +++ b/test/py/tests/test_efi_capsule/capsule_defs.py @@ -3,3 +3,8 @@ # Directories CAPSULE_DATA_DIR = '/EFI/CapsuleTestData' CAPSULE_INSTALL_DIR = '/EFI/UpdateCapsule' + +# v1.5.1 or earlier of efitools has a bug in sha256 calculation, and +# you need build a newer version on your own. +# The path must terminate with '/'. +EFITOOLS_PATH = '' diff --git a/test/py/tests/test_efi_capsule/conftest.py b/test/py/tests/test_efi_capsule/conftest.py index 6ad5608cd71c..27c05971ca32 100644 --- a/test/py/tests/test_efi_capsule/conftest.py +++ b/test/py/tests/test_efi_capsule/conftest.py @@ -10,13 +10,13 @@ import pytest from capsule_defs import *
# -# Fixture for UEFI secure boot test +# Fixture for UEFI capsule test #
- @pytest.fixture(scope='session') def efi_capsule_data(request, u_boot_config): - """Set up a file system to be used in UEFI capsule test. + """Set up a file system to be used in UEFI capsule and + authentication test.
Args: request: Pytest request object. @@ -40,6 +40,36 @@ def efi_capsule_data(request, u_boot_config): check_call('mkdir -p %s' % data_dir, shell=True) check_call('mkdir -p %s' % install_dir, shell=True)
+ capsule_auth_enabled = u_boot_config.buildconfig.get( + 'config_efi_capsule_authenticate') + if capsule_auth_enabled: + # Create private key (SIGNER.key) and certificate (SIGNER.crt) + check_call('cd %s; ' + 'openssl req -x509 -sha256 -newkey rsa:2048 ' + '-subj /CN=TEST_SIGNER/ -keyout SIGNER.key ' + '-out SIGNER.crt -nodes -days 365' + % data_dir, shell=True) + check_call('cd %s; %scert-to-efi-sig-list SIGNER.crt SIGNER.esl' + % (data_dir, EFITOOLS_PATH), shell=True) + + # Update dtb adding capsule certificate + check_call('cd %s; ' + 'cp %s/test/py/tests/test_efi_capsule/signature.dts .' + % (data_dir, u_boot_config.source_dir), shell=True) + check_call('cd %s; ' + 'dtc -@ -I dts -O dtb -o signature.dtbo signature.dts; ' + 'fdtoverlay -i %s/arch/sandbox/dts/test.dtb ' + '-o test_sig.dtb signature.dtbo' + % (data_dir, u_boot_config.build_dir), shell=True) + + # Create *malicious* private key (SIGNER2.key) and certificate + # (SIGNER2.crt) + check_call('cd %s; ' + 'openssl req -x509 -sha256 -newkey rsa:2048 ' + '-subj /CN=TEST_SIGNER/ -keyout SIGNER2.key ' + '-out SIGNER2.crt -nodes -days 365' + % data_dir, shell=True) + # Create capsule files # two regions: one for u-boot.bin and the other for u-boot.env check_call('cd %s; echo -n u-boot:Old > u-boot.bin.old; echo -n u-boot:New > u-boot.bin.new; echo -n u-boot-env:Old -> u-boot.env.old; echo -n u-boot-env:New > u-boot.env.new' % data_dir, @@ -56,6 +86,22 @@ def efi_capsule_data(request, u_boot_config): check_call('cd %s; %s/tools/mkeficapsule --raw u-boot.bin.new --index 1 Test02' % (data_dir, u_boot_config.build_dir), shell=True) + if capsule_auth_enabled: + # firmware signed with proper key + check_call('cd %s; ' + '%s/tools/mkeficapsule --index 1 --monotonic-count 1 ' + '--private-key SIGNER.key --certificate SIGNER.crt ' + '--raw u-boot.bin.new Test11' + % (data_dir, u_boot_config.build_dir), + shell=True) + # firmware signed with *mal* key + check_call('cd %s; ' + '%s/tools/mkeficapsule --index 1 --monotonic-count 1 ' + '--private-key SIGNER2.key ' + '--certificate SIGNER2.crt ' + '--raw u-boot.bin.new Test12' + % (data_dir, u_boot_config.build_dir), + shell=True)
# Create a disk image with EFI system partition check_call('virt-make-fs --partition=gpt --size=+1M --type=vfat %s %s' % diff --git a/test/py/tests/test_efi_capsule/signature.dts b/test/py/tests/test_efi_capsule/signature.dts new file mode 100644 index 000000000000..078cfc76c93c --- /dev/null +++ b/test/py/tests/test_efi_capsule/signature.dts @@ -0,0 +1,10 @@ +// SPDX-License-Identifier: GPL-2.0+ + +/dts-v1/; +/plugin/; + +&{/} { + signature { + capsule-key = /incbin/("SIGNER.esl"); + }; +}; diff --git a/test/py/tests/test_efi_capsule/test_capsule_firmware_signed.py b/test/py/tests/test_efi_capsule/test_capsule_firmware_signed.py new file mode 100644 index 000000000000..593b032e9015 --- /dev/null +++ b/test/py/tests/test_efi_capsule/test_capsule_firmware_signed.py @@ -0,0 +1,254 @@ +# SPDX-License-Identifier: GPL-2.0+ +# Copyright (c) 2021, Linaro Limited +# Author: AKASHI Takahiro takahiro.akashi@linaro.org +# +# U-Boot UEFI: Firmware Update (Signed capsule) Test + +""" +This test verifies capsule-on-disk firmware update +with signed capsule files +""" + +import pytest +from capsule_defs import CAPSULE_DATA_DIR, CAPSULE_INSTALL_DIR + +@pytest.mark.boardspec('sandbox') +@pytest.mark.buildconfigspec('efi_capsule_firmware_raw') +@pytest.mark.buildconfigspec('efi_capsule_authenticate') +@pytest.mark.buildconfigspec('dfu') +@pytest.mark.buildconfigspec('dfu_sf') +@pytest.mark.buildconfigspec('cmd_efidebug') +@pytest.mark.buildconfigspec('cmd_fat') +@pytest.mark.buildconfigspec('cmd_memory') +@pytest.mark.buildconfigspec('cmd_nvedit_efi') +@pytest.mark.buildconfigspec('cmd_sf') +@pytest.mark.slow +class TestEfiCapsuleFirmwareSigned(object): + def test_efi_capsule_auth1( + self, u_boot_config, u_boot_console, efi_capsule_data): + """ + Test Case 1 - Update U-Boot on SPI Flash, raw image format + 0x100000-0x150000: U-Boot binary (but dummy) + + If the capsule is properly signed, the authentication + should pass and the firmware be updated. + """ + disk_img = efi_capsule_data + with u_boot_console.log.section('Test Case 1-a, before reboot'): + output = u_boot_console.run_command_list([ + 'host bind 0 %s' % disk_img, + 'efidebug boot add -b 1 TEST host 0:1 /helloworld.efi', + 'efidebug boot order 1', + 'env set -e -nv -bs -rt OsIndications =0x0000000000000004', + 'env set dfu_alt_info ' + '"sf 0:0=u-boot-bin raw 0x100000 ' + '0x50000;u-boot-env raw 0x150000 0x200000"', + 'env save']) + + # initialize content + output = u_boot_console.run_command_list([ + 'sf probe 0:0', + 'fatload host 0:1 4000000 %s/u-boot.bin.old' + % CAPSULE_DATA_DIR, + 'sf write 4000000 100000 10', + 'sf read 5000000 100000 10', + 'md.b 5000000 10']) + assert 'Old' in ''.join(output) + + # place a capsule file + output = u_boot_console.run_command_list([ + 'fatload host 0:1 4000000 %s/Test11' % CAPSULE_DATA_DIR, + 'fatwrite host 0:1 4000000 %s/Test11 $filesize' + % CAPSULE_INSTALL_DIR, + 'fatls host 0:1 %s' % CAPSULE_INSTALL_DIR]) + assert 'Test11' in ''.join(output) + + # reboot + mnt_point = u_boot_config.persistent_data_dir + '/test_efi_capsule' + u_boot_console.config.dtb = mnt_point + CAPSULE_DATA_DIR \ + + '/test_sig.dtb' + u_boot_console.restart_uboot() + + capsule_early = u_boot_config.buildconfig.get( + 'config_efi_capsule_on_disk_early') + with u_boot_console.log.section('Test Case 1-b, after reboot'): + if not capsule_early: + # make sure that dfu_alt_info exists even persistent variables + # are not available. + output = u_boot_console.run_command_list([ + 'env set dfu_alt_info ' + '"sf 0:0=u-boot-bin raw 0x100000 ' + '0x50000;u-boot-env raw 0x150000 0x200000"', + 'host bind 0 %s' % disk_img, + 'fatls host 0:1 %s' % CAPSULE_INSTALL_DIR]) + assert 'Test11' in ''.join(output) + + # need to run uefi command to initiate capsule handling + output = u_boot_console.run_command( + 'env print -e Capsule0000') + + output = u_boot_console.run_command_list([ + 'host bind 0 %s' % disk_img, + 'fatls host 0:1 %s' % CAPSULE_INSTALL_DIR]) + assert 'Test11' not in ''.join(output) + + output = u_boot_console.run_command_list([ + 'sf probe 0:0', + 'sf read 4000000 100000 10', + 'md.b 4000000 10']) + assert 'u-boot:New' in ''.join(output) + + def test_efi_capsule_auth2( + self, u_boot_config, u_boot_console, efi_capsule_data): + """ + Test Case 2 - Update U-Boot on SPI Flash, raw image format + 0x100000-0x150000: U-Boot binary (but dummy) + + If the capsule is signed but with an invalid key, + the authentication should fail and the firmware + not be updated. + """ + disk_img = efi_capsule_data + with u_boot_console.log.section('Test Case 2-a, before reboot'): + output = u_boot_console.run_command_list([ + 'host bind 0 %s' % disk_img, + 'efidebug boot add -b 1 TEST host 0:1 /helloworld.efi', + 'efidebug boot order 1', + 'env set -e -nv -bs -rt OsIndications =0x0000000000000004', + 'env set dfu_alt_info ' + '"sf 0:0=u-boot-bin raw 0x100000 ' + '0x50000;u-boot-env raw 0x150000 0x200000"', + 'env save']) + + # initialize content + output = u_boot_console.run_command_list([ + 'sf probe 0:0', + 'fatload host 0:1 4000000 %s/u-boot.bin.old' + % CAPSULE_DATA_DIR, + 'sf write 4000000 100000 10', + 'sf read 5000000 100000 10', + 'md.b 5000000 10']) + assert 'Old' in ''.join(output) + + # place a capsule file + output = u_boot_console.run_command_list([ + 'fatload host 0:1 4000000 %s/Test12' % CAPSULE_DATA_DIR, + 'fatwrite host 0:1 4000000 %s/Test12 $filesize' + % CAPSULE_INSTALL_DIR, + 'fatls host 0:1 %s' % CAPSULE_INSTALL_DIR]) + assert 'Test12' in ''.join(output) + + # reboot + mnt_point = u_boot_config.persistent_data_dir + '/test_efi_capsule' + u_boot_console.config.dtb = mnt_point + CAPSULE_DATA_DIR \ + + '/test_sig.dtb' + u_boot_console.restart_uboot() + + capsule_early = u_boot_config.buildconfig.get( + 'config_efi_capsule_on_disk_early') + with u_boot_console.log.section('Test Case 2-b, after reboot'): + if not capsule_early: + # make sure that dfu_alt_info exists even persistent variables + # are not available. + output = u_boot_console.run_command_list([ + 'env set dfu_alt_info ' + '"sf 0:0=u-boot-bin raw 0x100000 ' + '0x50000;u-boot-env raw 0x150000 0x200000"', + 'host bind 0 %s' % disk_img, + 'fatls host 0:1 %s' % CAPSULE_INSTALL_DIR]) + assert 'Test12' in ''.join(output) + + # need to run uefi command to initiate capsule handling + output = u_boot_console.run_command( + 'env print -e Capsule0000') + + # deleted any way + output = u_boot_console.run_command_list([ + 'host bind 0 %s' % disk_img, + 'fatls host 0:1 %s' % CAPSULE_INSTALL_DIR]) + assert 'Test12' not in ''.join(output) + + # TODO: check CapsuleStatus in CapsuleXXXX + + output = u_boot_console.run_command_list([ + 'sf probe 0:0', + 'sf read 4000000 100000 10', + 'md.b 4000000 10']) + assert 'u-boot:Old' in ''.join(output) + + def test_efi_capsule_auth3( + self, u_boot_config, u_boot_console, efi_capsule_data): + """ + Test Case 3 - Update U-Boot on SPI Flash, raw image format + 0x100000-0x150000: U-Boot binary (but dummy) + + If the capsule is not signed, the authentication + should fail and the firmware not be updated. + """ + disk_img = efi_capsule_data + with u_boot_console.log.section('Test Case 3-a, before reboot'): + output = u_boot_console.run_command_list([ + 'host bind 0 %s' % disk_img, + 'efidebug boot add -b 1 TEST host 0:1 /helloworld.efi', + 'efidebug boot order 1', + 'env set -e -nv -bs -rt OsIndications =0x0000000000000004', + 'env set dfu_alt_info ' + '"sf 0:0=u-boot-bin raw 0x100000 ' + '0x50000;u-boot-env raw 0x150000 0x200000"', + 'env save']) + + # initialize content + output = u_boot_console.run_command_list([ + 'sf probe 0:0', + 'fatload host 0:1 4000000 %s/u-boot.bin.old' + % CAPSULE_DATA_DIR, + 'sf write 4000000 100000 10', + 'sf read 5000000 100000 10', + 'md.b 5000000 10']) + assert 'Old' in ''.join(output) + + # place a capsule file + output = u_boot_console.run_command_list([ + 'fatload host 0:1 4000000 %s/Test02' % CAPSULE_DATA_DIR, + 'fatwrite host 0:1 4000000 %s/Test02 $filesize' + % CAPSULE_INSTALL_DIR, + 'fatls host 0:1 %s' % CAPSULE_INSTALL_DIR]) + assert 'Test02' in ''.join(output) + + # reboot + mnt_point = u_boot_config.persistent_data_dir + '/test_efi_capsule' + u_boot_console.config.dtb = mnt_point + CAPSULE_DATA_DIR \ + + '/test_sig.dtb' + u_boot_console.restart_uboot() + + capsule_early = u_boot_config.buildconfig.get( + 'config_efi_capsule_on_disk_early') + with u_boot_console.log.section('Test Case 3-b, after reboot'): + if not capsule_early: + # make sure that dfu_alt_info exists even persistent variables + # are not available. + output = u_boot_console.run_command_list([ + 'env set dfu_alt_info ' + '"sf 0:0=u-boot-bin raw 0x100000 ' + '0x50000;u-boot-env raw 0x150000 0x200000"', + 'host bind 0 %s' % disk_img, + 'fatls host 0:1 %s' % CAPSULE_INSTALL_DIR]) + assert 'Test02' in ''.join(output) + + # need to run uefi command to initiate capsule handling + output = u_boot_console.run_command( + 'env print -e Capsule0000') + + # deleted any way + output = u_boot_console.run_command_list([ + 'host bind 0 %s' % disk_img, + 'fatls host 0:1 %s' % CAPSULE_INSTALL_DIR]) + assert 'Test02' not in ''.join(output) + + # TODO: check CapsuleStatus in CapsuleXXXX + + output = u_boot_console.run_command_list([ + 'sf probe 0:0', + 'sf read 4000000 100000 10', + 'md.b 4000000 10']) + assert 'u-boot:Old' in ''.join(output)