diff --git a/big.go b/big.go
index 44bfee2e4a..b0fbcb64fa 100644
--- a/big.go
+++ b/big.go
@@ -24,3 +24,12 @@ func Big(num string) *big.Int {
   return n
 }
 
+/*
+ * Like big.NewInt(uint64); this takes a byte buffer instead.
+ */
+func BigD(data []byte) *big.Int {
+  n := new(big.Int)
+  n.SetBytes(data)
+
+  return n
+}