1 # Copyright (c) 2011 The Chromium OS Authors. All rights reserved. 2 # Use of this source code is governed by a BSD-style license that can be 3 # found in the LICENSE file. 4 5 import logging 6 from autotest_lib.client.bin import test, utils 7 from autotest_lib.client.common_lib import error 8 9 class hardware_TPMLoadKey(test.test): 10 11 # This test determines the TPM can execute a TPM LoadKey function 12 # 13 # The test sequence follows the steps below: 14 # 1. Create a local file containing a text file to be "sealed" 15 # 2. Execute the TPM Tools command for tpm_sealdata 16 # 3. Parse response of tpm_sealdata for LoadKey function execution 17 # 4. Test passes if LoadKey reports success. 18 # 19 20 version = 1 21 22 # Runs a command, logs the output, and returns the exit status. 23 def __run_cmd(self, cmd): 24 result = utils.system_output(cmd, retain_output=True, 25 ignore_status=False) 26 logging.info(result) 27 return result 28 29 def run_once(self): 30 # Create the test input file 31 create_input_file_cmd = "echo 'This is a test' > in.dat" 32 output = self.__run_cmd(create_input_file_cmd) 33 34 # Execute the TPM Tools command for sealdata, causing a LoadKey 35 # event, and filter for a debug message indicating success 36 seal_data_cmd = \ 37 "tpm_sealdata -i in.dat -o out.dat -z -l debug 2>&1 | grep LoadKey" 38 output = self.__run_cmd(seal_data_cmd) 39 40 # Confirm the LoadKey message reports success 41 if (output.find("success") < 0): 42 raise error.TestError("LoadKey execution did not succeed") 43
