[GH-#84] Fixed implementation error

Author: HristianHristov

apps/aecore/lib/aecore/keys/worker.ex

@@ -301,7 +301,6 @@ defmodule Aecore.Keys.Worker do
 
   defp is_valid_pub_key(pub_key_str) do
     pub_key_str
-    |> Base.decode16!()
     |> byte_size() == @pub_key_length
   end
 

apps/aecore/test/aecore_keys_test.exs

@@ -25,14 +25,15 @@ defmodule AecoreKeysTest do
 
   test "check pubkey length" do
     pub_key_str = "041A470AE9831B61D9951A10D49663419CE087DF1BD7DB06578971767F032D389CB283AD4DD4E3532F3A5F3C89B006092CB6CECE39CAC3B06C2CB6DF8B51C73675"
-
-    assert false  == Keys.verify("", "", pub_key_str)
+    pub_key_bin = pub_key_str |> Base.decode16!()
+    assert false  == Keys.verify("", "", pub_key_bin)
   end
 
   test "wrong key verification" do
     pub_key_str = "041A470AE9831B61D9951A10D49663419CE087DF1BD7DB06578971767F032D389CB283AD4DD4E3"
+    pub_key_bin = pub_key_str |> Base.decode16!()
 
-    assert {:error, _} = Keys.verify("", "", pub_key_str)
+    assert {:error, _} = Keys.verify("", "", pub_key_bin)
   end
 
 end