1 # Copyright 2018 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 time 6 7 def StartU2fd(client): 8 """Starts u2fd on the client. 9 10 @param client: client object to run commands on. 11 """ 12 client.run('stop u2fd', ignore_status=True) 13 old_dev = client.run('ls /dev/hidraw*', 14 ignore_status=True).stdout.strip().split('\n') 15 client.run_background('u2fd --force_g2f') 16 17 # TODO(louiscollard): Replace this with something less fragile. 18 cr50_dev = set() 19 timeout_count = 0 20 while (len(cr50_dev) == 0 and timeout_count < 5): 21 time.sleep(1) 22 timeout_count += 1 23 new_dev = client.run('ls /dev/hidraw*', 24 ignore_status=True).stdout.strip().split('\n') 25 cr50_dev = set(new_dev) - set(old_dev) 26 27 return cr50_dev.pop() 28 29 def G2fRegister(client, dev, challenge, application, p1=0): 30 """Returns a dictionary with TPM status. 31 32 @param client: client object to run commands on. 33 """ 34 return client.run('g2ftool --reg --dev=' + dev + 35 ' --challenge=' + challenge + 36 ' --application=' + application + 37 ' --p1=' + str(p1), 38 ignore_status=True) 39 40 def G2fAuth(client, dev, challenge, application, key_handle, p1=0): 41 """Returns a dictionary with TPM status. 42 43 @param client: client object to run commands on. 44 """ 45 return client.run('g2ftool --auth --dev=' + dev + 46 ' --challenge=' + challenge + 47 ' --application=' + application + 48 ' --key_handle=' + key_handle + 49 ' --p1=' + str(p1), 50 ignore_status=True) 51
