Verifying service produced challenge

lib/core/persistence/models/lock.js

@@ -16,6 +16,10 @@ module.exports = function (sequelize, DataTypes, options) {
             type: DataTypes.STRING,
             allowNull: false
         },
+        serviceExtendedPublicKey: {
+            type: DataTypes.STRING,
+            allowNull: false
+        },
         signature: {
             // Derivation from the master key...
             // TODO: Add validation...