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# SPDX-License-Identifier: GPL-2.0+
# Copyright (c) 2019, Linaro Limited
# Author: AKASHI Takahiro <takahiro.akashi@linaro.org>
#
# U-Boot UEFI: Signed Image Authentication Test
"""
This test verifies image authentication for unsigned images.
"""
import pytest
@pytest.mark.boardspec('sandbox')
@pytest.mark.buildconfigspec('efi_secure_boot')
@pytest.mark.buildconfigspec('cmd_efidebug')
@pytest.mark.buildconfigspec('cmd_fat')
@pytest.mark.buildconfigspec('cmd_nvedit_efi')
@pytest.mark.slow
class TestEfiUnsignedImage(object):
def test_efi_unsigned_image_auth1(self, u_boot_console, efi_boot_env):
"""
Test Case 1 - rejected when not digest in db or dbx
"""
u_boot_console.restart_uboot()
disk_img = efi_boot_env
with u_boot_console.log.section('Test Case 1'):
# Test Case 1
output = u_boot_console.run_command_list([
'host bind 0 %s' % disk_img,
'fatload host 0:1 4000000 KEK.auth',
'setenv -e -nv -bs -rt -at -i 4000000,$filesize KEK',
'fatload host 0:1 4000000 PK.auth',
'setenv -e -nv -bs -rt -at -i 4000000,$filesize PK'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot add 1 HELLO host 0:1 /helloworld.efi ""',
'efidebug boot next 1',
'bootefi bootmgr'])
assert '\'HELLO\' failed' in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot next 1',
'efidebug test bootmgr'])
assert 'efi_start_image() returned: 26' in ''.join(output)
assert 'Hello, world!' not in ''.join(output)
def test_efi_unsigned_image_auth2(self, u_boot_console, efi_boot_env):
"""
Test Case 2 - authenticated by digest in db
"""
u_boot_console.restart_uboot()
disk_img = efi_boot_env
with u_boot_console.log.section('Test Case 2'):
# Test Case 2
output = u_boot_console.run_command_list([
'host bind 0 %s' % disk_img,
'fatload host 0:1 4000000 db_hello.auth',
'setenv -e -nv -bs -rt -at -i 4000000,$filesize db',
'fatload host 0:1 4000000 KEK.auth',
'setenv -e -nv -bs -rt -at -i 4000000,$filesize KEK',
'fatload host 0:1 4000000 PK.auth',
'setenv -e -nv -bs -rt -at -i 4000000,$filesize PK'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot add 1 HELLO host 0:1 /helloworld.efi ""',
'efidebug boot next 1',
'bootefi bootmgr'])
assert 'Hello, world!' in ''.join(output)
def test_efi_unsigned_image_auth3(self, u_boot_console, efi_boot_env):
"""
Test Case 3 - rejected by digest in dbx
"""
u_boot_console.restart_uboot()
disk_img = efi_boot_env
with u_boot_console.log.section('Test Case 3a'):
# Test Case 3a, rejected by dbx
output = u_boot_console.run_command_list([
'host bind 0 %s' % disk_img,
'fatload host 0:1 4000000 db_hello.auth',
'setenv -e -nv -bs -rt -at -i 4000000,$filesize dbx',
'fatload host 0:1 4000000 KEK.auth',
'setenv -e -nv -bs -rt -at -i 4000000,$filesize KEK',
'fatload host 0:1 4000000 PK.auth',
'setenv -e -nv -bs -rt -at -i 4000000,$filesize PK'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot add 1 HELLO host 0:1 /helloworld.efi ""',
'efidebug boot next 1',
'bootefi bootmgr'])
assert '\'HELLO\' failed' in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot next 1',
'efidebug test bootmgr'])
assert 'efi_start_image() returned: 26' in ''.join(output)
assert 'Hello, world!' not in ''.join(output)
with u_boot_console.log.section('Test Case 3b'):
# Test Case 3b, rejected by dbx even if db allows
output = u_boot_console.run_command_list([
'fatload host 0:1 4000000 db_hello.auth',
'setenv -e -nv -bs -rt -at -i 4000000,$filesize db'])
assert 'Failed to set EFI variable' not in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot add 1 HELLO host 0:1 /helloworld.efi ""',
'efidebug boot next 1',
'bootefi bootmgr'])
assert '\'HELLO\' failed' in ''.join(output)
output = u_boot_console.run_command_list([
'efidebug boot next 1',
'efidebug test bootmgr'])
assert 'efi_start_image() returned: 26' in ''.join(output)
assert 'Hello, world!' not in ''.join(output)
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