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

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

 // 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 "chrome/browser/chromeos/login/easy_unlock/easy_unlock_create_keys_operation.h"
 
 #include <string>
 
 #include "base/bind.h"
 #include "base/logging.h"
@@ skipping 17 matching lines @@
 
 namespace {
 
 const int kUserKeyByteSize = 16;
 const int kSessionKeyByteSize = 16;
 
 const int kEasyUnlockKeyRevision = 1;
 const int kEasyUnlockKeyPrivileges =
     cryptohome::PRIV_MOUNT | cryptohome::PRIV_ADD | cryptohome::PRIV_REMOVE;
 
-// TODO(xiyuan): Use real keys. http://crbug.com/409027
-const char kTpmPubKey[] = {
-    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, 0xdc, 0xfa, 0x10,
-    0xff, 0xa7, 0x46, 0x65, 0xae, 0xef, 0x87, 0x09, 0x74, 0xea, 0x99, 0xb2,
-    0xce, 0x54, 0x54, 0x7c, 0x67, 0xf4, 0x2a, 0xaa, 0x6d, 0xd0, 0x1a, 0x2e,
-    0xd3, 0x1f, 0xd2, 0xc2, 0x42, 0xaf, 0x5d, 0x96, 0x0b, 0x1f, 0x89, 0x6e,
-    0xfb, 0xa3, 0x54, 0x3d, 0x65, 0x54, 0xb7, 0xb1, 0x26, 0x87, 0xa5, 0xc6,
-    0x88, 0x56, 0x8f, 0x32, 0xe0, 0x26, 0xc5, 0x32, 0xd2, 0x59, 0x93, 0xb9,
-    0x7a, 0x7c, 0x28, 0x42, 0xec, 0x2b, 0x8e, 0x12, 0x35, 0xee, 0xe2, 0x41,
-    0x4d, 0x25, 0x80, 0x6c, 0x6f, 0xba, 0xe4, 0x38, 0x95, 0x4e, 0xba, 0x9d,
-    0x27, 0x55, 0xdf, 0xfe, 0xeb, 0x1b, 0x47, 0x70, 0x09, 0x57, 0x81, 0x5a,
-    0x8a, 0x23, 0x3f, 0x97, 0xb1, 0xa2, 0xc7, 0x14, 0xb3, 0xe2, 0xbe, 0x2e,
-    0x42, 0xd8, 0xbe, 0x30, 0xb1, 0x96, 0x15, 0x82, 0xea, 0x99, 0x48, 0x91,
-    0x0e, 0x0c, 0x79, 0x7c, 0x50, 0xfc, 0x4b, 0xb4, 0x55, 0xf0, 0xfc, 0x45,
-    0xe5, 0xe3, 0x4e, 0x63, 0x96, 0xac, 0x5b, 0x2d, 0x46, 0x23, 0x93, 0x65,
-    0xc7, 0xf3, 0xda, 0xaf, 0x09, 0x09, 0x40, 0x0d, 0x61, 0xcf, 0x9e, 0x0c,
-    0xa8, 0x08, 0x3e, 0xaf, 0x33, 0x5a, 0x6f, 0xce, 0xb6, 0x86, 0x3c, 0x1c,
-    0xc0, 0xcf, 0x5a, 0x17, 0x1a, 0xff, 0x35, 0xd9, 0x7e, 0xcb, 0x60, 0xef,
-    0x25, 0x1c, 0x7e, 0xc2, 0xc8, 0xa5, 0x88, 0x36, 0x1d, 0xc4, 0x12, 0x66,
-    0xa4, 0xb7, 0xed, 0x38, 0xb0, 0x26, 0xce, 0x0d, 0x53, 0x78, 0x64, 0x49,
-    0xdb, 0xb1, 0x1a, 0x06, 0xea, 0x33, 0xcc, 0xf1, 0xec, 0xa5, 0x75, 0x20,
-    0x1e, 0xd1, 0xaa, 0x47, 0x3e, 0xd1, 0x18, 0x7e, 0xc1, 0xd8, 0xa7, 0x44,
-    0xea, 0x34, 0x5b, 0xed, 0x7e, 0xa0, 0x0e, 0xe4, 0xe8, 0x1b, 0xba, 0x46,
-    0x48, 0x60, 0x1d, 0xd5, 0x37, 0xdc, 0x91, 0x01, 0x5d, 0x31, 0xf0, 0xc2,
-    0xc1, 0x02, 0x03, 0x01, 0x00, 0x01
-};
-
 }  // namespace
 
 /////////////////////////////////////////////////////////////////////////////
 // EasyUnlockCreateKeysOperation::ChallengeCreator
 
 class EasyUnlockCreateKeysOperation::ChallengeCreator {
  public:
   typedef base::Callback<void (bool success)> ChallengeCreatedCallback;
   ChallengeCreator(const std::string& user_key,
                    const std::string& session_key,
@@ skipping 178 matching lines @@
 
   device_->challenge = challenge;
   callback_.Run(true);
 }
 
 /////////////////////////////////////////////////////////////////////////////
 // EasyUnlockCreateKeysOperation
 
 EasyUnlockCreateKeysOperation::EasyUnlockCreateKeysOperation(
     const UserContext& user_context,
+    const std::string& tpm_public_key,
     const EasyUnlockDeviceKeyDataList& devices,
     const CreateKeysCallback& callback)
     : user_context_(user_context),
+      tpm_public_key_(tpm_public_key),
       devices_(devices),
       callback_(callback),
       key_creation_index_(0),
       weak_ptr_factory_(this) {
   // Must have the secret and callback.
   DCHECK(!user_context_.GetKey()->GetSecret().empty());
   DCHECK(!callback_.is_null());
 }
 
 EasyUnlockCreateKeysOperation::~EasyUnlockCreateKeysOperation() {
@@ skipping 33 matching lines @@
     callback_.Run(false);
     return;
   }
 
   std::string raw_session_key;
   session_key->GetRawKey(&raw_session_key);
 
   challenge_creator_.reset(new ChallengeCreator(
       user_key,
       raw_session_key,
-      std::string(kTpmPubKey, arraysize(kTpmPubKey)),
+      tpm_public_key_,
       device,
       base::Bind(&EasyUnlockCreateKeysOperation::OnChallengeCreated,
                  weak_ptr_factory_.GetWeakPtr(),
                  index)));
   challenge_creator_->Start();
 }
 
 void EasyUnlockCreateKeysOperation::OnChallengeCreated(size_t index,
                                                        bool success) {
   DCHECK_EQ(key_creation_index_, index);
@@ skipping 80 matching lines @@
       user_context_.GetKey()->GetLabel() ==
           EasyUnlockKeyManager::GetKeyLabel(key_creation_index_)) {
     user_context_.SetKey(user_key);
   }
 
   ++key_creation_index_;
   CreateKeyForDeviceAtIndex(key_creation_index_);
 }
 
 }  // namespace chromeos