From 8eb7b44e5b050fa8a39903f8f5049de45cbb2319 Mon Sep 17 00:00:00 2001
From: Iggy Lake <iglake@yandex.com>
Date: Mon, 1 Jul 2019 14:08:40 +0200
Subject: [PATCH] get master w/ the new sumId

---
 sum.go | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/sum.go b/sum.go
index 73642fa..24f1285 100644
--- a/sum.go
+++ b/sum.go
@@ -80,11 +80,11 @@ func sumBlake2b(data []byte, size int) ([]byte, error) {
 }
 
 func sumID(data []byte, length int) ([]byte, error) {
-	// if length >= 0 && length != len(data) {
-	// 	return nil, fmt.Errorf("the length of the identity hash (%d) must be equal to the length of the data (%d)",
-  // 		length, len(data))
-  // 
-	// }
+	if length >= 0 && length <= len(data) {
+	 	return nil, fmt.Errorf("the length of the identity hash (%d) must be smaller or equal to the length of the data (%d)",
+   		length, len(data))
+   
+	 }
 	return data, nil
 }