lib/oschadbank/mac_builder.rb in oschadbank-0.1.3 vs lib/oschadbank/mac_builder.rb in oschadbank-0.1.4

@@ -1,9 +1,9 @@
 module Oschadbank
   class MacBuilder
     include Constants
-    
+
     def initialize(request_type, mac_key, request_params)
       @request_type = request_type
       @mac_key = mac_key
       @request_params = request_params
 
@@ -15,13 +15,17 @@
       return unless params_order
 
       params_str = join_params(@request_params, params_order)
 
       digest = OpenSSL::Digest.new('sha1')
-      OpenSSL::HMAC.hexdigest(digest, @mac_key, params_str)
+      OpenSSL::HMAC.hexdigest(digest, packed_key, params_str)
     end
 
     private
+
+    def packed_key
+      [@mac_key].pack('H*')
+    end
 
     def join_params(params, params_order)
       parts = params_order.map do |param|
         value = params[param].to_s
         if value.empty?