Format and add function for vflCCoUi2 and vflg4IfMn

src/helpers.cr

@@ -207,12 +207,25 @@ def decrypt_signature(a, base)
     a.reverse!
     a = swap(a, 8)
     a = swap(a, 61)
+  when "vflCCoUi2"
+    a = swap(a, 26)
+    a.reverse!
+    a = swap(a, 8)
+    a = swap(a, 61)
+  when "vflg4IfMn"
+    a = swap(a, 6)
+    a = swap(a, 64)
+    a = swap(a, 25)
+    a = swap(a, 53)
+    a.delete_at(0..1)
+    a.reverse!
+    a.delete_at(0..2)
   else
     raise "Could not decrypt signature for player #{base}"
   end
 
   return a.join("")
-  end
+end
 
 def rank_videos(db, n)
   top = [] of {Float64, String}