# SPDX-License-Identifier: GPL-2.0+ # Copyright (c) 2019, Linaro Limited # Author: AKASHI Takahiro """Fixture for UEFI secure boot test.""" from subprocess import call, check_call, CalledProcessError import pytest from defs import * @pytest.fixture(scope='session') def efi_boot_env(request, u_boot_config): """Set up a file system to be used in UEFI secure boot test. Args: request: Pytest request object. u_boot_config: U-Boot configuration. Return: A path to disk image to be used for testing """ image_path = u_boot_config.persistent_data_dir image_path = image_path + '/test_efi_secboot.img' try: mnt_point = u_boot_config.build_dir + '/mnt_efisecure' check_call('rm -rf {}'.format(mnt_point), shell=True) check_call('mkdir -p {}'.format(mnt_point), shell=True) # suffix # *.key: RSA private key in PEM # *.crt: X509 certificate (self-signed) in PEM # *.esl: signature list # *.hash: message digest of image as signature list # *.auth: signed signature list in signature database format # *.efi: UEFI image # *.efi.signed: signed UEFI image # Create signature database # PK check_call('cd %s; openssl req -x509 -sha256 -newkey rsa:2048 -subj /CN=TEST_PK/ -keyout PK.key -out PK.crt -nodes -days 365' % mnt_point, shell=True) check_call('cd %s; %scert-to-efi-sig-list -g %s PK.crt PK.esl; %ssign-efi-sig-list -t "2020-04-01" -c PK.crt -k PK.key PK PK.esl PK.auth' % (mnt_point, EFITOOLS_PATH, GUID, EFITOOLS_PATH), shell=True) # PK_null for deletion check_call('cd %s; touch PK_null.esl; %ssign-efi-sig-list -t "2020-04-02" -c PK.crt -k PK.key PK PK_null.esl PK_null.auth' % (mnt_point, EFITOOLS_PATH), shell=True) # KEK check_call('cd %s; openssl req -x509 -sha256 -newkey rsa:2048 -subj /CN=TEST_KEK/ -keyout KEK.key -out KEK.crt -nodes -days 365' % mnt_point, shell=True) check_call('cd %s; %scert-to-efi-sig-list -g %s KEK.crt KEK.esl; %ssign-efi-sig-list -t "2020-04-03" -c PK.crt -k PK.key KEK KEK.esl KEK.auth' % (mnt_point, EFITOOLS_PATH, GUID, EFITOOLS_PATH), shell=True) # db check_call('cd %s; openssl req -x509 -sha256 -newkey rsa:2048 -subj /CN=TEST_db/ -keyout db.key -out db.crt -nodes -days 365' % mnt_point, shell=True) check_call('cd %s; %scert-to-efi-sig-list -g %s db.crt db.esl; %ssign-efi-sig-list -t "2020-04-04" -c KEK.crt -k KEK.key db db.esl db.auth' % (mnt_point, EFITOOLS_PATH, GUID, EFITOOLS_PATH), shell=True) # db1 check_call('cd %s; openssl req -x509 -sha256 -newkey rsa:2048 -subj /CN=TEST_db1/ -keyout db1.key -out db1.crt -nodes -days 365' % mnt_point, shell=True) check_call('cd %s; %scert-to-efi-sig-list -g %s db1.crt db1.esl; %ssign-efi-sig-list -t "2020-04-05" -c KEK.crt -k KEK.key db db1.esl db1.auth' % (mnt_point, EFITOOLS_PATH, GUID, EFITOOLS_PATH), shell=True) # dbx (TEST_dbx certificate) check_call('cd %s; openssl req -x509 -sha256 -newkey rsa:2048 -subj /CN=TEST_dbx/ -keyout dbx.key -out dbx.crt -nodes -days 365' % mnt_point, shell=True) check_call('cd %s; %scert-to-efi-sig-list -g %s dbx.crt dbx.esl; %ssign-efi-sig-list -t "2020-04-05" -c KEK.crt -k KEK.key dbx dbx.esl dbx.auth' % (mnt_point, EFITOOLS_PATH, GUID, EFITOOLS_PATH), shell=True) # dbx_hash (digest of TEST_db certificate) check_call('cd %s; %scert-to-efi-hash-list -g %s -s 256 db.crt dbx_hash.crl; %ssign-efi-sig-list -t "2020-04-05" -c KEK.crt -k KEK.key dbx dbx_hash.crl dbx_hash.auth' % (mnt_point, EFITOOLS_PATH, GUID, EFITOOLS_PATH), shell=True) check_call('cd %s; %scert-to-efi-hash-list -g %s -s 384 db.crt dbx_hash384.crl; %ssign-efi-sig-list -t "2020-04-05" -c KEK.crt -k KEK.key dbx dbx_hash384.crl dbx_hash384.auth' % (mnt_point, EFITOOLS_PATH, GUID, EFITOOLS_PATH), shell=True) check_call('cd %s; %scert-to-efi-hash-list -g %s -s 512 db.crt dbx_hash512.crl; %ssign-efi-sig-list -t "2020-04-05" -c KEK.crt -k KEK.key dbx dbx_hash512.crl dbx_hash512.auth' % (mnt_point, EFITOOLS_PATH, GUID, EFITOOLS_PATH), shell=True) # dbx_hash1 (digest of TEST_db1 certificate) check_call('cd %s; %scert-to-efi-hash-list -g %s -s 256 db1.crt dbx_hash1.crl; %ssign-efi-sig-list -t "2020-04-06" -c KEK.crt -k KEK.key dbx dbx_hash1.crl dbx_hash1.auth' % (mnt_point, EFITOOLS_PATH, GUID, EFITOOLS_PATH), shell=True) # dbx_db (with TEST_db certificate) check_call('cd %s; %ssign-efi-sig-list -t "2020-04-05" -c KEK.crt -k KEK.key dbx db.esl dbx_db.auth' % (mnt_point, EFITOOLS_PATH), shell=True) # Copy image check_call('cp %s/lib/efi_loader/helloworld.efi %s' % (u_boot_config.build_dir, mnt_point), shell=True) # Sign image check_call('cd %s; sbsign --key db.key --cert db.crt helloworld.efi' % mnt_point, shell=True) # Sign already-signed image with another key check_call('cd %s; sbsign --key db1.key --cert db1.crt --output helloworld.efi.signed_2sigs helloworld.efi.signed' % mnt_point, shell=True) # Create a corrupted signed image check_call('cd %s; sh %s/test/py/tests/test_efi_secboot/forge_image.sh helloworld.efi.signed helloworld_forged.efi.signed' % (mnt_point, u_boot_config.source_dir), shell=True) # Digest image check_call('cd %s; %shash-to-efi-sig-list helloworld.efi db_hello.hash; %ssign-efi-sig-list -t "2020-04-07" -c KEK.crt -k KEK.key db db_hello.hash db_hello.auth' % (mnt_point, EFITOOLS_PATH, EFITOOLS_PATH), shell=True) check_call('cd %s; %shash-to-efi-sig-list helloworld.efi.signed db_hello_signed.hash; %ssign-efi-sig-list -t "2020-04-03" -c KEK.crt -k KEK.key db db_hello_signed.hash db_hello_signed.auth' % (mnt_point, EFITOOLS_PATH, EFITOOLS_PATH), shell=True) check_call('cd %s; %ssign-efi-sig-list -t "2020-04-07" -c KEK.crt -k KEK.key dbx db_hello_signed.hash dbx_hello_signed.auth' % (mnt_point, EFITOOLS_PATH), shell=True) check_call('virt-make-fs --partition=gpt --size=+1M --type=vfat {} {}'.format( mnt_point, image_path), shell=True) check_call('rm -rf {}'.format(mnt_point), shell=True) except CalledProcessError as exception: pytest.skip('Setup failed: %s' % exception.cmd) return else: yield image_path finally: call('rm -f %s' % image_path, shell=True) # # Fixture for UEFI secure boot test of intermediate certificates # @pytest.fixture(scope='session') def efi_boot_env_intca(request, u_boot_config): """Set up file system for secure boot test. Set up a file system to be used in UEFI secure boot test of intermediate certificates. Args: request: Pytest request object. u_boot_config: U-Boot configuration. Return: A path to disk image to be used for testing """ image_path = u_boot_config.persistent_data_dir image_path = image_path + '/test_efi_secboot_intca.img' try: mnt_point = u_boot_config.persistent_data_dir + '/mnt_efi_secboot_intca' check_call('rm -rf {}'.format(mnt_point), shell=True) check_call('mkdir -p {}'.format(mnt_point), shell=True) # Create signature database # PK check_call('cd %s; openssl req -x509 -sha256 -newkey rsa:2048 -subj /CN=TEST_PK/ -keyout PK.key -out PK.crt -nodes -days 365' % mnt_point, shell=True) check_call('cd %s; %scert-to-efi-sig-list -g %s PK.crt PK.esl; %ssign-efi-sig-list -c PK.crt -k PK.key PK PK.esl PK.auth' % (mnt_point, EFITOOLS_PATH, GUID, EFITOOLS_PATH), shell=True) # KEK check_call('cd %s; openssl req -x509 -sha256 -newkey rsa:2048 -subj /CN=TEST_KEK/ -keyout KEK.key -out KEK.crt -nodes -days 365' % mnt_point, shell=True) check_call('cd %s; %scert-to-efi-sig-list -g %s KEK.crt KEK.esl; %ssign-efi-sig-list -c PK.crt -k PK.key KEK KEK.esl KEK.auth' % (mnt_point, EFITOOLS_PATH, GUID, EFITOOLS_PATH), shell=True) # We will have three-tier hierarchy of certificates: # TestRoot: Root CA (self-signed) # TestSub: Intermediate CA (signed by Root CA) # TestCert: User certificate (signed by Intermediate CA, and used # for signing an image) # # NOTE: # I consulted the following EDK2 document for certificate options: # BaseTools/Source/Python/Pkcs7Sign/Readme.md # Please not use them as they are in product system. They are # for test purpose only. # TestRoot check_call('cp %s/test/py/tests/test_efi_secboot/openssl.cnf %s' % (u_boot_config.source_dir, mnt_point), shell=True) check_call('cd %s; export OPENSSL_CONF=./openssl.cnf; openssl genrsa -out TestRoot.key 2048; openssl req -extensions v3_ca -new -x509 -days 365 -key TestRoot.key -out TestRoot.crt -subj "/CN=TEST_root/"; touch index.txt; touch index.txt.attr' % mnt_point, shell=True) # TestSub check_call('cd %s; touch serial.new; export OPENSSL_CONF=./openssl.cnf; openssl genrsa -out TestSub.key 2048; openssl req -new -key TestSub.key -out TestSub.csr -subj "/CN=TEST_sub/"; openssl ca -in TestSub.csr -out TestSub.crt -extensions v3_int_ca -days 365 -batch -rand_serial -cert TestRoot.crt -keyfile TestRoot.key' % mnt_point, shell=True) # TestCert check_call('cd %s; touch serial.new; export OPENSSL_CONF=./openssl.cnf; openssl genrsa -out TestCert.key 2048; openssl req -new -key TestCert.key -out TestCert.csr -subj "/CN=TEST_cert/"; openssl ca -in TestCert.csr -out TestCert.crt -extensions usr_cert -days 365 -batch -rand_serial -cert TestSub.crt -keyfile TestSub.key' % mnt_point, shell=True) # db # for TestCert check_call('cd %s; %scert-to-efi-sig-list -g %s TestCert.crt TestCert.esl; %ssign-efi-sig-list -c KEK.crt -k KEK.key db TestCert.esl db_a.auth' % (mnt_point, EFITOOLS_PATH, GUID, EFITOOLS_PATH), shell=True) # for TestSub check_call('cd %s; %scert-to-efi-sig-list -g %s TestSub.crt TestSub.esl; %ssign-efi-sig-list -t "2020-07-16" -c KEK.crt -k KEK.key db TestSub.esl db_b.auth' % (mnt_point, EFITOOLS_PATH, GUID, EFITOOLS_PATH), shell=True) # for TestRoot check_call('cd %s; %scert-to-efi-sig-list -g %s TestRoot.crt TestRoot.esl; %ssign-efi-sig-list -t "2020-07-17" -c KEK.crt -k KEK.key db TestRoot.esl db_c.auth' % (mnt_point, EFITOOLS_PATH, GUID, EFITOOLS_PATH), shell=True) ## dbx (hash of certificate with revocation time) # for TestCert check_call('cd %s; %scert-to-efi-hash-list -g %s -t "2020-07-20" -s 256 TestCert.crt TestCert.crl; %ssign-efi-sig-list -c KEK.crt -k KEK.key dbx TestCert.crl dbx_a.auth' % (mnt_point, EFITOOLS_PATH, GUID, EFITOOLS_PATH), shell=True) # for TestSub check_call('cd %s; %scert-to-efi-hash-list -g %s -t "2020-07-21" -s 256 TestSub.crt TestSub.crl; %ssign-efi-sig-list -t "2020-07-18" -c KEK.crt -k KEK.key dbx TestSub.crl dbx_b.auth' % (mnt_point, EFITOOLS_PATH, GUID, EFITOOLS_PATH), shell=True) # for TestRoot check_call('cd %s; %scert-to-efi-hash-list -g %s -t "2020-07-22" -s 256 TestRoot.crt TestRoot.crl; %ssign-efi-sig-list -t "2020-07-19" -c KEK.crt -k KEK.key dbx TestRoot.crl dbx_c.auth' % (mnt_point, EFITOOLS_PATH, GUID, EFITOOLS_PATH), shell=True) # Sign image # additional intermediate certificates may be included # in SignedData check_call('cp %s/lib/efi_loader/helloworld.efi %s' % (u_boot_config.build_dir, mnt_point), shell=True) # signed by TestCert check_call('cd %s; %ssbsign --key TestCert.key --cert TestCert.crt --out helloworld.efi.signed_a helloworld.efi' % (mnt_point, SBSIGN_PATH), shell=True) # signed by TestCert with TestSub in signature check_call('cd %s; %ssbsign --key TestCert.key --cert TestCert.crt --addcert TestSub.crt --out helloworld.efi.signed_ab helloworld.efi' % (mnt_point, SBSIGN_PATH), shell=True) # signed by TestCert with TestSub and TestRoot in signature check_call('cd %s; cat TestSub.crt TestRoot.crt > TestSubRoot.crt; %ssbsign --key TestCert.key --cert TestCert.crt --addcert TestSubRoot.crt --out helloworld.efi.signed_abc helloworld.efi' % (mnt_point, SBSIGN_PATH), shell=True) check_call('virt-make-fs --partition=gpt --size=+1M --type=vfat {} {}'.format(mnt_point, image_path), shell=True) check_call('rm -rf {}'.format(mnt_point), shell=True) except CalledProcessError as e: pytest.skip('Setup failed: %s' % e.cmd) return else: yield image_path finally: call('rm -f %s' % image_path, shell=True)