From eab63bc264a35cf21738e8535773e3d36524c3fe Mon Sep 17 00:00:00 2001
From: Andrew Chow <achow101-github@achow101.com>
Date: Tue, 6 Nov 2018 09:23:37 -0500
Subject: Store key origin info in key metadata

Store the master key fingerprint and derivation path in the
key metadata. hdKeypath is kept to indicate the seed and for
backwards compatibility, but all key derivation path output
uses the key origin info instead of hdKeypath.
---
 src/wallet/walletdb.h | 15 +++++++++++++--
 1 file changed, 13 insertions(+), 2 deletions(-)

(limited to 'src/wallet/walletdb.h')

diff --git a/src/wallet/walletdb.h b/src/wallet/walletdb.h
index 2e8d9b16ba..0532a55ff5 100644
--- a/src/wallet/walletdb.h
+++ b/src/wallet/walletdb.h
@@ -8,6 +8,7 @@
 
 #include <amount.h>
 #include <primitives/transaction.h>
+#include <script/sign.h>
 #include <wallet/db.h>
 #include <key.h>
 
@@ -93,11 +94,14 @@ class CKeyMetadata
 public:
     static const int VERSION_BASIC=1;
     static const int VERSION_WITH_HDDATA=10;
-    static const int CURRENT_VERSION=VERSION_WITH_HDDATA;
+    static const int VERSION_WITH_KEY_ORIGIN = 12;
+    static const int CURRENT_VERSION=VERSION_WITH_KEY_ORIGIN;
     int nVersion;
     int64_t nCreateTime; // 0 means unknown
-    std::string hdKeypath; //optional HD/bip32 keypath
+    std::string hdKeypath; //optional HD/bip32 keypath. Still used to determine whether a key is a seed. Also kept for backwards compatibility
     CKeyID hd_seed_id; //id of the HD seed used to derive this key
+    KeyOriginInfo key_origin; // Key origin info with path and fingerprint
+    bool has_key_origin = false; //< Whether the key_origin is useful
 
     CKeyMetadata()
     {
@@ -120,6 +124,11 @@ public:
             READWRITE(hdKeypath);
             READWRITE(hd_seed_id);
         }
+        if (this->nVersion >= VERSION_WITH_KEY_ORIGIN)
+        {
+            READWRITE(key_origin);
+            READWRITE(has_key_origin);
+        }
     }
 
     void SetNull()
@@ -128,6 +137,8 @@ public:
         nCreateTime = 0;
         hdKeypath.clear();
         hd_seed_id.SetNull();
+        key_origin.clear();
+        has_key_origin = false;
     }
 };
 
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