--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/gcc/ada/libgnat/g-sehamd.ads	Fri Oct 27 22:46:09 2017 +0900
@@ -0,0 +1,74 @@
+------------------------------------------------------------------------------
+--                                                                          --
+--                         GNAT LIBRARY COMPONENTS                          --
+--                                                                          --
+--               G N A T . S E C U R E _ H A S H E S . M D 5                --
+--                                                                          --
+--                                 S p e c                                  --
+--                                                                          --
+--         Copyright (C) 2002-2017, Free Software Foundation, Inc.          --
+--                                                                          --
+-- GNAT is free software;  you can  redistribute it  and/or modify it under --
+-- terms of the  GNU General Public License as published  by the Free Soft- --
+-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
+-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
+-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
+-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
+--                                                                          --
+-- As a special exception under Section 7 of GPL version 3, you are granted --
+-- additional permissions described in the GCC Runtime Library Exception,   --
+-- version 3.1, as published by the Free Software Foundation.               --
+--                                                                          --
+-- You should have received a copy of the GNU General Public License and    --
+-- a copy of the GCC Runtime Library Exception along with this program;     --
+-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
+-- <http://www.gnu.org/licenses/>.                                          --
+--                                                                          --
+-- GNAT was originally developed  by the GNAT team at  New York University. --
+-- Extensive contributions were provided by Ada Core Technologies Inc.      --
+--                                                                          --
+------------------------------------------------------------------------------
+
+--  This package provides supporting code for implementation of the MD5
+--  Message-Digest Algorithm as described in RFC 1321. The complete text of
+--  RFC 1321 can be found at:
+--          http://www.ietf.org/rfc/rfc1321.txt
+
+--  This is an internal unit and should not be used directly in applications.
+--  Use GNAT.MD5 instead.
+
+with GNAT.Byte_Swapping;
+with Interfaces;
+
+package GNAT.Secure_Hashes.MD5 is
+
+   package Hash_State is
+     new GNAT.Secure_Hashes.Hash_Function_State
+           (Word           => Interfaces.Unsigned_32,
+            Swap           => GNAT.Byte_Swapping.Swap4,
+            Hash_Bit_Order => System.Low_Order_First);
+   --  MD5 operates on 32-bit little endian words
+
+   Block_Words : constant := 16;
+   --  Messages are processed in chunks of 16 words
+
+   procedure Transform
+     (H : in out Hash_State.State;
+      M : in out Message_State);
+   --  Transformation function applied for each block
+
+   Initial_State : constant Hash_State.State;
+   --  Initialization vector
+
+private
+
+   Initial_A : constant := 16#67452301#;
+   Initial_B : constant := 16#EFCDAB89#;
+   Initial_C : constant := 16#98BADCFE#;
+   Initial_D : constant := 16#10325476#;
+
+   Initial_State : constant Hash_State.State :=
+                     (Initial_A, Initial_B, Initial_C, Initial_D);
+   --  Initialization vector from RFC 1321
+
+end GNAT.Secure_Hashes.MD5;