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

chrome/common/pref_names.cc

Index: chrome/common/pref_names.cc
diff --git a/chrome/common/pref_names.cc b/chrome/common/pref_names.cc
index b2b045b565bcbaf2044c94aa99429e8c81d9ecdc..fbd7792df01fc27e1eda1920923afb070809f844 100644
--- a/chrome/common/pref_names.cc
+++ b/chrome/common/pref_names.cc
@@ -1235,6 +1235,10 @@ const char kEasyUnlockProximityRequired[] = "easy_unlock.proximity_required";
 // Whether to show the Easy Unlock first run tutorial.
 const char kEasyUnlockShowTutorial[] = "easy_unlock.show_tutorial";
 
+// The public part of RSA key pair used by Easy Signin for user. The key pair
+// is stored in system TPM slot.
+const char kEasyUnlockUserTpmKey[] = "easy_unlock.public_tpm_key";
+
 // A cache of zero suggest results using JSON serialized into a string.
 const char kZeroSuggestCachedResults[] = "zerosuggest.cachedresults";
 
@@ -2291,6 +2295,10 @@ const char kBrowserAddPersonEnabled[] = "profile.add_person_enabled";
 // A dictionary that maps user id to hardlock state.
 const char kEasyUnlockHardlockState[] = "easy_unlock.hardlock_state";
 
+// A dictionary that maps user id to public part of RSA key pair used by
+// Easy Sign-in for the user.
+const char kEasyUnlockLocalStateTpmKeys[] = "easy_unlock.public_tpm_keys";
+
 // The beginning of time span when we count user's "Nope" for the password
 // bubble.
 const char kPasswordBubbleTimeStamp[] = "password_bubble.timestamp";