Easy Sign-in: Use TPM RSA key to sign nonce in sign-in protocol

chrome/browser/chromeos/login/easy_unlock/easy_unlock_tpm_key_manager_unittest.cc

Index: chrome/browser/chromeos/login/easy_unlock/easy_unlock_tpm_key_manager_unittest.cc
diff --git a/chrome/browser/chromeos/login/easy_unlock/easy_unlock_tpm_key_manager_unittest.cc b/chrome/browser/chromeos/login/easy_unlock/easy_unlock_tpm_key_manager_unittest.cc
new file mode 100644
index 0000000000000000000000000000000000000000..9e6a5d9b454b0d0d269ff77380141cbf4a539231
--- /dev/null
+++ b/chrome/browser/chromeos/login/easy_unlock/easy_unlock_tpm_key_manager_unittest.cc
@@ -0,0 +1,463 @@
+// Copyright 2014 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#include <cryptohi.h>
+
+#include "base/base64.h"
+#include "base/macros.h"
+#include "base/message_loop/message_loop.h"
+#include "base/prefs/testing_pref_service.h"
+#include "base/run_loop.h"
+#include "base/strings/utf_string_conversions.h"
+#include "chrome/browser/chromeos/login/easy_unlock/easy_unlock_tpm_key_manager.h"
+#include "chrome/browser/chromeos/login/easy_unlock/easy_unlock_tpm_key_manager_factory.h"
+#include "chrome/browser/chromeos/login/users/fake_user_manager.h"
+#include "chrome/browser/chromeos/login/users/scoped_user_manager_enabler.h"
+#include "chrome/browser/prefs/browser_prefs.h"
+#include "chrome/common/chrome_constants.h"
+#include "chrome/common/pref_names.h"
+#include "chrome/test/base/scoped_testing_local_state.h"
+#include "chrome/test/base/testing_browser_process.h"
+#include "chrome/test/base/testing_pref_service_syncable.h"
+#include "chrome/test/base/testing_profile.h"
+#include "chrome/test/base/testing_profile_manager.h"
+#include "crypto/scoped_test_system_nss_key_slot.h"
+#include "testing/gtest/include/gtest/gtest.h"
+
+namespace {
+
+// User that is associated with test user profile.
+const char kTestUserId[] = "user_id@somewhere.com";
+
+// Public part of the RSA key pair used as the RSA key pair associated with
+// test user's Easy Unlock service.
+const char kTestPublicKey[] = {
+  0x30, 0x82, 0x01, 0x22, 0x30, 0x0d, 0x06, 0x09, 0x2a, 0x86, 0x48, 0x86,
+  0xf7, 0x0d, 0x01, 0x01, 0x01, 0x05, 0x00, 0x03, 0x82, 0x01, 0x0f, 0x00,
+  0x30, 0x82, 0x01, 0x0a, 0x02, 0x82, 0x01, 0x01, 0x00, 0xcb, 0x5a, 0x8d,
+  0x34, 0xa2, 0xe3, 0x43, 0x16, 0x94, 0x8d, 0xce, 0xa9, 0x92, 0xb0, 0x35,
+  0x5a, 0x34, 0x50, 0xd4, 0x7f, 0x14, 0x1f, 0xa3, 0x8e, 0x48, 0x2c, 0x42,
+  0xe8, 0xe4, 0xf6, 0x38, 0x5a, 0xdf, 0x08, 0x6b, 0x0e, 0x78, 0xc9, 0xfc,
+  0x72, 0x03, 0xb8, 0xd2, 0x75, 0x1d, 0x56, 0x8f, 0x6d, 0x8d, 0xe2, 0x65,
+  0x3b, 0x66, 0xbb, 0x66, 0xe3, 0x3a, 0x00, 0xc1, 0x4a, 0xe2, 0xf2, 0xc8,
+  0x2d, 0x95, 0x74, 0x5b, 0x65, 0xaa, 0xfd, 0xe1, 0x11, 0xf9, 0x9e, 0x73,
+  0x3d, 0x96, 0xb5, 0xae, 0x19, 0x03, 0x74, 0x0f, 0xfa, 0xbd, 0x52, 0x72,
+  0x83, 0x08, 0x1e, 0x53, 0x08, 0x30, 0xb6, 0xd3, 0xef, 0x4b, 0x2d, 0x65,
+  0x3c, 0x7d, 0xba, 0x55, 0xfe, 0x7d, 0x1c, 0xc5, 0xf1, 0x4e, 0x9c, 0xae,
+  0x27, 0xe2, 0x1b, 0x42, 0x2c, 0xd9, 0x6a, 0x81, 0x6c, 0x51, 0x2d, 0x7b,
+  0x7d, 0x28, 0xe3, 0xab, 0xaf, 0x30, 0x33, 0xd1, 0x46, 0xd1, 0xbe, 0x62,
+  0x2e, 0xd5, 0xfd, 0x32, 0x68, 0xb6, 0xe2, 0x95, 0x59, 0x6e, 0x69, 0xe9,
+  0x9c, 0x24, 0xf7, 0x71, 0xde, 0x5f, 0xd5, 0xc5, 0x8a, 0x71, 0xb3, 0x65,
+  0x77, 0xf9, 0x29, 0xf3, 0xce, 0x0a, 0x00, 0xca, 0xd7, 0xf9, 0x2e, 0x45,
+  0x04, 0xb5, 0x68, 0x1f, 0xfe, 0x4e, 0xac, 0xdd, 0xaa, 0xc5, 0x24, 0x6e,
+  0xec, 0x63, 0x36, 0x5f, 0xb9, 0x94, 0x0c, 0x7c, 0xf3, 0xcf, 0xa9, 0x44,
+  0x80, 0x99, 0x13, 0x89, 0x68, 0xbc, 0x6c, 0xfb, 0xe7, 0x2c, 0x94, 0x2e,
+  0x99, 0x31, 0xf1, 0x02, 0xd7, 0x27, 0xaf, 0xae, 0x69, 0xa9, 0x95, 0xd5,
+  0xf2, 0x6a, 0x6c, 0x46, 0x95, 0xdb, 0x30, 0xc9, 0x9f, 0xbe, 0xa0, 0x71,
+  0xc9, 0x74, 0xfb, 0xbb, 0x0a, 0x8b, 0xa1, 0x7c, 0x1a, 0xdf, 0xa3, 0xb2,
+  0x18, 0x29, 0xe5, 0xf6, 0x94, 0x9f, 0xa3, 0x50, 0x11, 0x4b, 0xfe, 0x05,
+  0xcb, 0x02, 0x03, 0x01, 0x00, 0x01
+};
+
+// Private part of the RSA key pair used as the RSA key pair associated with
+// test user's Easy Unlock service.
+const unsigned char kTestPrivateKey[] = {
+  0x30, 0x82, 0x04, 0xbf, 0x02, 0x01, 0x00, 0x30, 0x0d, 0x06, 0x09, 0x2a,
+  0x86, 0x48, 0x86, 0xf7, 0x0d, 0x01, 0x01, 0x01, 0x05, 0x00, 0x04, 0x82,
+  0x04, 0xa9, 0x30, 0x82, 0x04, 0xa5, 0x02, 0x01, 0x00, 0x02, 0x82, 0x01,
+  0x01, 0x00, 0xcb, 0x5a, 0x8d, 0x34, 0xa2, 0xe3, 0x43, 0x16, 0x94, 0x8d,
+  0xce, 0xa9, 0x92, 0xb0, 0x35, 0x5a, 0x34, 0x50, 0xd4, 0x7f, 0x14, 0x1f,
+  0xa3, 0x8e, 0x48, 0x2c, 0x42, 0xe8, 0xe4, 0xf6, 0x38, 0x5a, 0xdf, 0x08,
+  0x6b, 0x0e, 0x78, 0xc9, 0xfc, 0x72, 0x03, 0xb8, 0xd2, 0x75, 0x1d, 0x56,
+  0x8f, 0x6d, 0x8d, 0xe2, 0x65, 0x3b, 0x66, 0xbb, 0x66, 0xe3, 0x3a, 0x00,
+  0xc1, 0x4a, 0xe2, 0xf2, 0xc8, 0x2d, 0x95, 0x74, 0x5b, 0x65, 0xaa, 0xfd,
+  0xe1, 0x11, 0xf9, 0x9e, 0x73, 0x3d, 0x96, 0xb5, 0xae, 0x19, 0x03, 0x74,
+  0x0f, 0xfa, 0xbd, 0x52, 0x72, 0x83, 0x08, 0x1e, 0x53, 0x08, 0x30, 0xb6,
+  0xd3, 0xef, 0x4b, 0x2d, 0x65, 0x3c, 0x7d, 0xba, 0x55, 0xfe, 0x7d, 0x1c,
+  0xc5, 0xf1, 0x4e, 0x9c, 0xae, 0x27, 0xe2, 0x1b, 0x42, 0x2c, 0xd9, 0x6a,
+  0x81, 0x6c, 0x51, 0x2d, 0x7b, 0x7d, 0x28, 0xe3, 0xab, 0xaf, 0x30, 0x33,
+  0xd1, 0x46, 0xd1, 0xbe, 0x62, 0x2e, 0xd5, 0xfd, 0x32, 0x68, 0xb6, 0xe2,
+  0x95, 0x59, 0x6e, 0x69, 0xe9, 0x9c, 0x24, 0xf7, 0x71, 0xde, 0x5f, 0xd5,
+  0xc5, 0x8a, 0x71, 0xb3, 0x65, 0x77, 0xf9, 0x29, 0xf3, 0xce, 0x0a, 0x00,
+  0xca, 0xd7, 0xf9, 0x2e, 0x45, 0x04, 0xb5, 0x68, 0x1f, 0xfe, 0x4e, 0xac,
+  0xdd, 0xaa, 0xc5, 0x24, 0x6e, 0xec, 0x63, 0x36, 0x5f, 0xb9, 0x94, 0x0c,
+  0x7c, 0xf3, 0xcf, 0xa9, 0x44, 0x80, 0x99, 0x13, 0x89, 0x68, 0xbc, 0x6c,
+  0xfb, 0xe7, 0x2c, 0x94, 0x2e, 0x99, 0x31, 0xf1, 0x02, 0xd7, 0x27, 0xaf,
+  0xae, 0x69, 0xa9, 0x95, 0xd5, 0xf2, 0x6a, 0x6c, 0x46, 0x95, 0xdb, 0x30,
+  0xc9, 0x9f, 0xbe, 0xa0, 0x71, 0xc9, 0x74, 0xfb, 0xbb, 0x0a, 0x8b, 0xa1,
+  0x7c, 0x1a, 0xdf, 0xa3, 0xb2, 0x18, 0x29, 0xe5, 0xf6, 0x94, 0x9f, 0xa3,
+  0x50, 0x11, 0x4b, 0xfe, 0x05, 0xcb, 0x02, 0x03, 0x01, 0x00, 0x01, 0x02,
+  0x82, 0x01, 0x01, 0x00, 0xc3, 0xec, 0x1c, 0x7c, 0x08, 0x2b, 0xf9, 0xa9,
+  0x39, 0xbb, 0x5e, 0xcf, 0x96, 0x1a, 0xdb, 0x6c, 0x6b, 0x57, 0x2d, 0x44,
+  0xba, 0x78, 0xb9, 0x36, 0x0e, 0x67, 0x46, 0x97, 0xe8, 0x71, 0x29, 0x5e,
+  0xb3, 0xe0, 0x02, 0x75, 0x50, 0xff, 0x1a, 0x90, 0x26, 0xf1, 0xdd, 0x23,
+  0x24, 0xff, 0x0e, 0xf5, 0x38, 0x6c, 0x55, 0xa8, 0x63, 0x94, 0x4e, 0xce,
+  0xc2, 0x45, 0x93, 0xf5, 0xb8, 0xae, 0xbd, 0x1a, 0xde, 0x11, 0xdb, 0x35,
+  0x1b, 0x07, 0xbb, 0xdf, 0x7b, 0xa6, 0xa3, 0xd5, 0x44, 0xed, 0x0a, 0x2d,
+  0xe3, 0x5b, 0xe1, 0x41, 0x6d, 0x42, 0x90, 0x3d, 0x9a, 0x86, 0xcc, 0xec,
+  0xe9, 0x32, 0x5d, 0x03, 0x02, 0x65, 0x5c, 0x52, 0x69, 0xb8, 0x2b, 0xbe,
+  0x23, 0x80, 0xa3, 0x5d, 0x98, 0xa5, 0xf0, 0x4d, 0x50, 0xd5, 0x7e, 0x6e,
+  0x83, 0x92, 0xcf, 0xdb, 0x32, 0x63, 0x25, 0xc5, 0x32, 0xae, 0x17, 0xeb,
+  0xda, 0x81, 0xa8, 0xcc, 0x37, 0x6a, 0xdb, 0x3b, 0xe1, 0x48, 0x5f, 0xfc,
+  0x31, 0x98, 0x49, 0x53, 0x2a, 0xf0, 0x71, 0x67, 0x52, 0xdc, 0x01, 0x07,
+  0x3e, 0xb1, 0x7f, 0xb1, 0xc4, 0x1a, 0x23, 0x3d, 0x7a, 0x94, 0x63, 0xb4,
+  0xb6, 0x9a, 0xa3, 0x7e, 0x8d, 0x4a, 0xba, 0x9c, 0x88, 0xfd, 0xd2, 0x2e,
+  0x32, 0x5f, 0xa6, 0x2c, 0xf4, 0xc8, 0x54, 0xa5, 0x7a, 0x5a, 0x02, 0x0c,
+  0x80, 0xa4, 0x8b, 0x6c, 0x4a, 0xda, 0x00, 0x62, 0x77, 0xd9, 0x49, 0x11,
+  0xae, 0xe5, 0x51, 0xc4, 0x54, 0x68, 0xe9, 0xbd, 0x9f, 0x95, 0x8f, 0x1b,
+  0xb7, 0x0b, 0x25, 0x6b, 0xe7, 0x32, 0x55, 0x92, 0xb0, 0x0f, 0x10, 0xe2,
+  0xc6, 0xef, 0x5f, 0xe1, 0x54, 0xdb, 0xe0, 0x2d, 0x59, 0xe4, 0xc0, 0x92,
+  0x60, 0x5b, 0x25, 0xb0, 0x33, 0x1a, 0x6b, 0xa4, 0x03, 0xd2, 0xd2, 0x3b,
+  0x09, 0xd6, 0xc4, 0x4e, 0xde, 0x09, 0xdc, 0x81, 0x02, 0x81, 0x81, 0x00,
+  0xf9, 0xf8, 0x73, 0x97, 0x11, 0xfd, 0x87, 0x76, 0xd3, 0x70, 0x38, 0xbe,
+  0x17, 0xe0, 0xdc, 0x55, 0x11, 0x95, 0x83, 0xa7, 0x4e, 0xbc, 0x8c, 0xe9,
+  0x59, 0xe4, 0x64, 0xa2, 0xd3, 0xc9, 0xd9, 0x48, 0x1a, 0xe7, 0x96, 0x2c,
+  0xc5, 0x21, 0x87, 0x77, 0x9e, 0x43, 0xaa, 0xdf, 0x26, 0x96, 0x22, 0xc2,
+  0x14, 0x01, 0xbf, 0x56, 0xda, 0xe9, 0x36, 0xf5, 0x06, 0xa9, 0x0f, 0x9a,
+  0xae, 0x86, 0xc6, 0x73, 0x8f, 0x46, 0x48, 0x8e, 0x5d, 0x17, 0xb7, 0xff,
+  0x24, 0x85, 0x3a, 0xac, 0x9e, 0x65, 0x04, 0xc9, 0x24, 0x47, 0x05, 0xfa,
+  0xf2, 0xda, 0x19, 0xd4, 0x39, 0x89, 0x29, 0xc7, 0x12, 0xb0, 0x89, 0x1a,
+  0x96, 0x46, 0x79, 0x28, 0x80, 0x6d, 0xb8, 0xb6, 0x9a, 0x2e, 0x36, 0xa6,
+  0x5a, 0xc5, 0x98, 0xfb, 0x26, 0xe7, 0xbc, 0xe3, 0x9f, 0xd5, 0x07, 0x0d,
+  0xb0, 0xcd, 0x55, 0xe6, 0x1b, 0x1e, 0x16, 0x2b, 0x02, 0x81, 0x81, 0x00,
+  0xd0, 0x42, 0x3e, 0xb6, 0x35, 0xf7, 0x40, 0xc7, 0xb4, 0xd1, 0xd0, 0x23,
+  0xb5, 0xcc, 0x61, 0x42, 0x3b, 0x21, 0xa8, 0x19, 0x9d, 0xea, 0xf5, 0x8c,
+  0xf2, 0xf7, 0x2a, 0xa4, 0xee, 0x81, 0x50, 0x16, 0x38, 0x99, 0x50, 0x72,
+  0xe6, 0xf5, 0xae, 0xf1, 0x11, 0x6c, 0x08, 0xa1, 0x7e, 0x34, 0x3e, 0xea,
+  0x6d, 0x21, 0x29, 0xad, 0x72, 0x8a, 0xa5, 0x4e, 0x0a, 0x21, 0x0b, 0x3c,
+  0x32, 0xd9, 0xce, 0xdb, 0x2c, 0x5f, 0x88, 0x6f, 0x8f, 0xc1, 0x76, 0xcb,
+  0x32, 0xb2, 0x4a, 0x99, 0x8a, 0x43, 0x3f, 0x7c, 0x30, 0x10, 0x80, 0xd9,
+  0x3a, 0xd8, 0xf3, 0xa5, 0x5e, 0x69, 0x7f, 0x76, 0x3c, 0x79, 0x0e, 0xf5,
+  0x5c, 0xdc, 0x14, 0x8a, 0x22, 0x1c, 0xdf, 0xb6, 0xfb, 0x95, 0xfc, 0xa1,
+  0x7d, 0x29, 0xee, 0xee, 0xce, 0x82, 0xfd, 0xbb, 0xdc, 0x0e, 0xd9, 0xfb,
+  0x99, 0xca, 0xe2, 0x48, 0x2d, 0x9a, 0x9e, 0xe1, 0x02, 0x81, 0x81, 0x00,
+  0xbf, 0x5c, 0x97, 0x48, 0xd0, 0x89, 0xf1, 0x39, 0x63, 0x56, 0x66, 0xea,
+  0x07, 0xa7, 0xa9, 0xa5, 0x2a, 0x27, 0xf6, 0xb8, 0x8f, 0x4b, 0x42, 0xe8,
+  0xa5, 0x5b, 0x76, 0x3b, 0x3c, 0xbd, 0x2a, 0xac, 0xcb, 0x83, 0xfc, 0xf0,
+  0x5b, 0x1d, 0x76, 0xf2, 0x78, 0xe3, 0x3e, 0x9d, 0x44, 0x91, 0xed, 0x1b,
+  0xfc, 0x6a, 0xf6, 0x0a, 0xcc, 0xdd, 0x7a, 0xa8, 0x0b, 0xa8, 0x42, 0xfc,
+  0xdc, 0x9c, 0xea, 0xb1, 0xae, 0xbe, 0x54, 0x6f, 0x40, 0x0f, 0x17, 0x59,
+  0xa8, 0xa0, 0xa1, 0xb1, 0x62, 0x34, 0xdd, 0x7c, 0x0a, 0x5c, 0xa0, 0xd4,
+  0x63, 0x33, 0xda, 0x50, 0x20, 0x97, 0xc3, 0xb6, 0xd5, 0xb4, 0xf5, 0xd0,
+  0xb7, 0xb8, 0x4d, 0xaa, 0x56, 0xdf, 0x28, 0x68, 0x0a, 0x12, 0x54, 0xdd,
+  0xf7, 0x61, 0x8b, 0xe2, 0xc0, 0xfe, 0xe9, 0x18, 0xac, 0xd4, 0x4d, 0x69,
+  0x0a, 0xaf, 0xb7, 0x11, 0xc8, 0x32, 0xb9, 0x2f, 0x02, 0x81, 0x81, 0x00,
+  0xce, 0x5f, 0xd7, 0x25, 0x59, 0x75, 0x1b, 0x8c, 0xcb, 0x72, 0xdf, 0x7f,
+  0x83, 0xb8, 0x74, 0xe8, 0xdd, 0x10, 0x0d, 0x34, 0xd5, 0x78, 0xf0, 0xbc,
+  0x2c, 0x49, 0x22, 0xc9, 0x2e, 0x50, 0x96, 0xbc, 0x6e, 0x79, 0xff, 0x6e,
+  0xdd, 0xd0, 0xb8, 0xfb, 0xca, 0xf7, 0xf3, 0xd5, 0x94, 0xea, 0xd1, 0x2e,
+  0x1d, 0xd6, 0xaf, 0x26, 0x62, 0x4b, 0x62, 0x64, 0x63, 0x45, 0x3b, 0x8c,
+  0xfc, 0x17, 0x3b, 0x15, 0x96, 0x73, 0x55, 0x10, 0xb8, 0xb4, 0x4e, 0xb4,
+  0x2e, 0x18, 0xe0, 0x34, 0x26, 0xff, 0x5c, 0xfa, 0x03, 0xe7, 0x56, 0xc7,
+  0xed, 0xb8, 0xf0, 0x38, 0xff, 0xc6, 0x2b, 0xb9, 0x4f, 0x53, 0xe7, 0xae,
+  0xdd, 0xc6, 0x79, 0xd4, 0x28, 0xd9, 0xd4, 0x17, 0xd0, 0x58, 0x61, 0x70,
+  0xe6, 0x47, 0x97, 0xae, 0xae, 0x96, 0xc0, 0x3a, 0x59, 0x67, 0x9e, 0x3b,
+  0xe5, 0xbb, 0x57, 0x61, 0x8f, 0x4f, 0x9a, 0x01, 0x02, 0x81, 0x80, 0x57,
+  0xfa, 0x17, 0x0a, 0x87, 0x99, 0xdb, 0x93, 0x94, 0x10, 0x3f, 0xa9, 0xbf,
+  0xa4, 0x02, 0x7d, 0xf1, 0x04, 0x41, 0x08, 0x68, 0x6a, 0x9b, 0x79, 0xfd,
+  0xf4, 0x10, 0x8f, 0xc8, 0xdd, 0xfe, 0x0c, 0xc7, 0xc3, 0x42, 0x2d, 0xac,
+  0x80, 0xc3, 0xfb, 0xa0, 0x8d, 0x31, 0x9b, 0x5b, 0xf8, 0xbb, 0x8c, 0x05,
+  0x56, 0xaf, 0x49, 0xca, 0xa9, 0xe5, 0xab, 0x80, 0xa9, 0x39, 0xfd, 0xd4,
+  0x78, 0x45, 0xaa, 0xd6, 0x27, 0x91, 0xa8, 0x76, 0x01, 0x98, 0xf0, 0x4f,
+  0x48, 0xe0, 0x4e, 0x53, 0x53, 0x55, 0x5e, 0x2b, 0x1a, 0x4f, 0x00, 0x62,
+  0xe4, 0x0e, 0x05, 0xa0, 0x94, 0x6e, 0xff, 0xd4, 0x13, 0x6f, 0x2e, 0x7c,
+  0x08, 0x92, 0x20, 0xa9, 0x29, 0xee, 0xb0, 0xbb, 0x14, 0x52, 0xf9, 0x6d,
+  0x28, 0xd9, 0xbd, 0x84, 0x11, 0x43, 0x71, 0xc2, 0x60, 0x69, 0xb3, 0x34,
+  0xe5, 0xae, 0xd7, 0x75, 0x4c, 0xb8, 0x3d, 0x0a
+};
+
+// Closure that fail the test if it's called.
+void ExpectNotCalledCallback() {
+  EXPECT_FALSE(true) << "Not reached";

[xiyuan, 2014/12/02 23:15:58]

nit: ADD_FAILURE() << "Not reached";

[tbarzic, 2014/12/03 19:10:28]

Done.

+}
+
+// Used to track how may |EasyUnlockTpmKeyManager::IsTpmKeyPresent| callbacks
+// have been called. It increases |*count| by 1.
+void IncreaseCount(int* count) {
+  ++(*count);
+}
+
+class EasyUnlockTpmKeyManagerTest : public testing::Test {
+ public:
+  EasyUnlockTpmKeyManagerTest()
+      : user_manager_(new chromeos::FakeUserManager),
+        user_manager_enabler_(user_manager_),
+        profile_manager_(TestingBrowserProcess::GetGlobal()) {
+  }
+  ~EasyUnlockTpmKeyManagerTest() override {}
+
+  void SetUp() override {
+    ASSERT_TRUE(profile_manager_.SetUp());
+    user_manager_->AddUser(kTestUserId);
+
+    scoped_ptr<TestingPrefServiceSyncable> user_prefs(
+        new TestingPrefServiceSyncable());
+    chrome::RegisterUserProfilePrefs(user_prefs->registry());
+
+    signin_profile_ = profile_manager_.CreateTestingProfile(
+        chrome::kInitialProfile,
+        scoped_ptr<TestingPrefServiceSyncable>(),
+        base::UTF8ToUTF16(chrome::kInitialProfile),
+        0 /* avatar id */,
+        std::string() /* supervized user id */,
+        TestingProfile::TestingFactories());
+
+    user_profile_ = profile_manager_.CreateTestingProfile(
+        kTestUserId,
+        user_prefs.Pass(),
+        base::UTF8ToUTF16(kTestUserId),
+        0 /* avatar id */,
+        std::string() /* supervized user id */,
+        TestingProfile::TestingFactories());
+  }
+
+  void TearDown() override {
+    profile_manager_.DeleteTestingProfile(kTestUserId);
+    profile_manager_.DeleteTestingProfile(chrome::kInitialProfile);
+  }
+
+  // Creates and sets test system NSS key slot.
+  bool SetUpTestSystemSlot() {
+    test_system_slot_.reset(new crypto::ScopedTestSystemNSSKeySlot());
+    return test_system_slot_->ConstructedSuccessfully();
+  }
+
+  // Imports a private RSA key to the test system slot.
+  // It returns whether the key has been imported. In order for the methos to
+  // succeed, the test system slot must have been set up
+  // (using |SetUpTestSystemSlot|).
+  bool ImportPrivateKey(const unsigned char* key, int key_size) {
+    if (!test_system_slot_ || !test_system_slot_->slot()) {
+      LOG(ERROR) << "System slot not initialized.";
+      return false;
+    }
+
+    SECItem pki_der_user = {
+      siBuffer,
+      // NSS requires non-const data even though it is just for input.
+      const_cast<unsigned char*>(key),
+      key_size
+    };
+
+    SECKEYPrivateKey* seckey = NULL;
+    return SECSuccess ==
+           PK11_ImportDERPrivateKeyInfoAndReturnKey(test_system_slot_->slot(),
+                                                    &pki_der_user,
+                                                    NULL,    // nickname
+                                                    NULL,    // publicValue
+                                                    true,    // isPerm
+                                                    true,    // isPrivate
+                                                    KU_ALL,  // usage
+                                                    &seckey,
+                                                    NULL);
+  }
+
+  // Returns EasyUnlockTPMKeyManager for user profile.
+  EasyUnlockTpmKeyManager* user_key_manager() {
+    return EasyUnlockTpmKeyManagerFactory::GetInstance()->Get(user_profile_);
+  }
+
+  // Returns EasyUnlockTPMKeyManager for signin profile.
+  EasyUnlockTpmKeyManager* signin_key_manager() {
+    return EasyUnlockTpmKeyManagerFactory::GetInstance()->Get(signin_profile_);
+  }
+
+  // Sets TPM public key pref in the test user's profile prefs.
+  void SetUserPrefPublicKey(const std::string& value) {
+    PrefService* prefs = user_profile_->GetPrefs();
+    std::string encoded;
+    base::Base64Encode(value, &encoded);
+    prefs->SetString(prefs::kEasyUnlockUserTpmKey, encoded);
+  }
+
+ private:
+  // The NSS system slot used by EasyUnlockTPMKeyManagers in tests.
+  scoped_ptr<crypto::ScopedTestSystemNSSKeySlot> test_system_slot_;
+
+  base::MessageLoop message_loop_;
+
+  // Needed to properly set up signin and user profiles for test.
+  chromeos::FakeUserManager* user_manager_;
+  chromeos::ScopedUserManagerEnabler user_manager_enabler_;
+  TestingProfileManager profile_manager_;
+
+  // The testing profiles that own EasyUnlockTPMKeyManager services.
+  // Owned by |profile_manager_|.
+  TestingProfile* user_profile_;
+  TestingProfile* signin_profile_;
+
+  DISALLOW_COPY_AND_ASSIGN(EasyUnlockTpmKeyManagerTest);
+};
+
+TEST_F(EasyUnlockTpmKeyManagerTest, CreateKeyPair) {
+  base::RunLoop run_loop;
+  EXPECT_TRUE(user_key_manager()->GetPublicTpmKey(kTestUserId).empty());
+  EXPECT_TRUE(signin_key_manager()->GetPublicTpmKey(kTestUserId).empty());
+  ASSERT_FALSE(user_key_manager()->IsTpmKeyPresent(
+      kTestUserId,
+      false /* check_private_key */,
+      run_loop.QuitClosure()));
+  EXPECT_TRUE(user_key_manager()->GetPublicTpmKey(kTestUserId).empty());
+
+  ASSERT_TRUE(SetUpTestSystemSlot());
+  run_loop.Run();
+
+  EXPECT_FALSE(user_key_manager()->GetPublicTpmKey(kTestUserId).empty());
+  EXPECT_EQ(user_key_manager()->GetPublicTpmKey(kTestUserId),
+            signin_key_manager()->GetPublicTpmKey(kTestUserId));
+
+  EXPECT_TRUE(user_key_manager()->IsTpmKeyPresent(
+      kTestUserId,
+       false /* check_private_key */,
+       base::Bind(&ExpectNotCalledCallback)));
+}
+
+TEST_F(EasyUnlockTpmKeyManagerTest, CreateKeyPairMultipleCallbacks) {
+  int callback_count = 0;
+  base::RunLoop run_loop;
+
+  ASSERT_FALSE(user_key_manager()->IsTpmKeyPresent(
+      kTestUserId,
+      false /* check_private_key */,
+      run_loop.QuitClosure()));
+  EXPECT_FALSE(user_key_manager()->IsTpmKeyPresent(
+      kTestUserId,
+      false /* check_private_key */,
+      base::Bind(&IncreaseCount, &callback_count)));
+  EXPECT_FALSE(user_key_manager()->IsTpmKeyPresent(
+      kTestUserId,
+      false /* check_private_key */,
+      base::Bind(&IncreaseCount, &callback_count)));
+  // Verify that the method works with empty callback.
+  EXPECT_FALSE(user_key_manager()->IsTpmKeyPresent(
+      kTestUserId, false /* check_private_key */, base::Closure()));
+
+  ASSERT_TRUE(SetUpTestSystemSlot());
+  EXPECT_EQ(0, callback_count);
+
+  run_loop.Run();
+
+  EXPECT_EQ(2, callback_count);
+  EXPECT_FALSE(user_key_manager()->GetPublicTpmKey(kTestUserId).empty());
+  EXPECT_EQ(user_key_manager()->GetPublicTpmKey(kTestUserId),
+            signin_key_manager()->GetPublicTpmKey(kTestUserId));
+
+  EXPECT_TRUE(user_key_manager()->IsTpmKeyPresent(
+      kTestUserId,
+      false /* check_private_key */,
+      base::Bind(&ExpectNotCalledCallback)));
+}
+
+TEST_F(EasyUnlockTpmKeyManagerTest, PublicKeySetInUserPrefs) {
+  SetUserPrefPublicKey(std::string(kTestPublicKey, arraysize(kTestPublicKey)));
+
+  EXPECT_TRUE(user_key_manager()->IsTpmKeyPresent(
+      kTestUserId,
+      false /* check_private_key */,
+      base::Bind(&ExpectNotCalledCallback)));
+
+  EXPECT_FALSE(user_key_manager()->GetPublicTpmKey(kTestUserId).empty());
+  EXPECT_EQ(user_key_manager()->GetPublicTpmKey(kTestUserId),
+            std::string(kTestPublicKey, arraysize(kTestPublicKey)));
+  EXPECT_EQ(user_key_manager()->GetPublicTpmKey(kTestUserId),
+            signin_key_manager()->GetPublicTpmKey(kTestUserId));
+}
+
+TEST_F(EasyUnlockTpmKeyManagerTest, PublicKeySetInUserPrefsCheckPrivateKey) {
+  SetUserPrefPublicKey(std::string(kTestPublicKey, arraysize(kTestPublicKey)));
+
+  base::RunLoop run_loop;
+  ASSERT_FALSE(user_key_manager()->IsTpmKeyPresent(
+      kTestUserId,
+      true /* check_private_key */,
+      run_loop.QuitClosure()));
+
+  ASSERT_TRUE(SetUpTestSystemSlot());
+  run_loop.Run();
+
+  EXPECT_FALSE(user_key_manager()->GetPublicTpmKey(kTestUserId).empty());
+  EXPECT_NE(user_key_manager()->GetPublicTpmKey(kTestUserId),
+            std::string(kTestPublicKey, arraysize(kTestPublicKey)));
+  EXPECT_EQ(user_key_manager()->GetPublicTpmKey(kTestUserId),
+            signin_key_manager()->GetPublicTpmKey(kTestUserId));
+}
+
+TEST_F(EasyUnlockTpmKeyManagerTest, PublicKeySetInUserPrefsCheckPrivateKey_OK) {
+  ASSERT_TRUE(SetUpTestSystemSlot());
+  ASSERT_TRUE(ImportPrivateKey(kTestPrivateKey,  arraysize(kTestPrivateKey)));
+  SetUserPrefPublicKey(std::string(kTestPublicKey, arraysize(kTestPublicKey)));
+
+  int callback_count = 0;
+  base::RunLoop run_loop;
+  ASSERT_FALSE(user_key_manager()->IsTpmKeyPresent(
+      kTestUserId,
+      true /* check_private_key */,
+      run_loop.QuitClosure()));
+
+  EXPECT_FALSE(user_key_manager()->IsTpmKeyPresent(
+      kTestUserId,
+      false /* check_private_key */,
+      base::Bind(&IncreaseCount, &callback_count)));
+
+  run_loop.Run();
+
+  EXPECT_EQ(1, callback_count);
+  EXPECT_FALSE(user_key_manager()->GetPublicTpmKey(kTestUserId).empty());
+  EXPECT_EQ(user_key_manager()->GetPublicTpmKey(kTestUserId),
+            std::string(kTestPublicKey, arraysize(kTestPublicKey)));
+  EXPECT_EQ(user_key_manager()->GetPublicTpmKey(kTestUserId),
+            signin_key_manager()->GetPublicTpmKey(kTestUserId));
+}
+
+TEST_F(EasyUnlockTpmKeyManagerTest, GetSystemSlotTimeoutTriggers) {
+  base::RunLoop run_loop_1;
+  base::RunLoop run_loop_2;
+  ASSERT_FALSE(user_key_manager()->IsTpmKeyPresent(
+      kTestUserId,
+      false /* check_private_key */,
+      run_loop_1.QuitClosure()));
+
+  ASSERT_TRUE(user_key_manager()->SetGetSystemSlotTimeoutMs(0));
+  run_loop_2.RunUntilIdle();
+
+  ASSERT_TRUE(SetUpTestSystemSlot());
+
+  run_loop_1.Run();
+
+  EXPECT_TRUE(user_key_manager()->GetPublicTpmKey(kTestUserId).empty());
+}
+
+TEST_F(EasyUnlockTpmKeyManagerTest, GetSystemSlotTimeout_SlotFetchedInTime) {
+  base::RunLoop run_loop;
+  ASSERT_FALSE(user_key_manager()->IsTpmKeyPresent(
+      kTestUserId,
+      false /* check_private_key */,
+      run_loop.QuitClosure()));
+
+  ASSERT_TRUE(user_key_manager()->SetGetSystemSlotTimeoutMs(0));
+
+  ASSERT_TRUE(SetUpTestSystemSlot());
+
+  run_loop.Run();
+
+  EXPECT_FALSE(user_key_manager()->GetPublicTpmKey(kTestUserId).empty());
+}
+
+TEST_F(EasyUnlockTpmKeyManagerTest, GetSystemSlotTimeoutAfterSlotFetched) {
+  base::RunLoop run_loop;
+  ASSERT_FALSE(user_key_manager()->IsTpmKeyPresent(
+      kTestUserId,
+      false /* check_private_key */,
+      run_loop.QuitClosure()));
+
+  ASSERT_TRUE(SetUpTestSystemSlot());
+
+  ASSERT_FALSE(user_key_manager()->SetGetSystemSlotTimeoutMs(0));
+
+  run_loop.Run();
+
+  EXPECT_FALSE(user_key_manager()->GetPublicTpmKey(kTestUserId).empty());
+}
+
+}  // namespace