X-Git-Url: https://git.immae.eu/?p=perso%2FImmae%2FProjets%2FCryptomonnaies%2FBIP39.git;a=blobdiff_plain;f=src%2Fjs%2Findex.js;h=13c61780931f03282c99d043e76d7231af7fbc0f;hp=45edea8477b835245c3a03b34183310f226ebbc3;hb=0a1f0259d1cfe5217ca9c08f7fbd371a03703594;hpb=ba3cb9ecae2667e98af71f5b38a862ba604e8e1c

diff --git a/src/js/index.js b/src/js/index.js
index 45edea8..13c6178 100644
--- a/src/js/index.js
+++ b/src/js/index.js
@@ -324,6 +324,10 @@
     }
 
     function calcBip32ExtendedKey(path) {
+        // Check there's a root key to derive from
+        if (!bip32RootKey) {
+            return bip32RootKey;
+        }
         var extendedKey = bip32RootKey;
         // Derive the key from the path
         var pathBits = path.split("/");
@@ -458,6 +462,10 @@
                 }
             }
         }
+        // Check root key exists or else derivation path is useless!
+        if (!bip32RootKey) {
+            return "No root key";
+        }
         // Check no hardened derivation path when using xpub keys
         var hardened = path.indexOf("'") > -1;
         var isXpubkey = !("privKey" in bip32RootKey);