1------------------------------------------------------------------------------
2--                                                                          --
3--                         GNAT LIBRARY COMPONENTS                          --
4--                                                                          --
5--                          G N A T . S H A 2 2 4                           --
6--                                                                          --
7--                                 S p e c                                  --
8--                                                                          --
9--         Copyright (C) 2009-2021, Free Software Foundation, Inc.          --
10--                                                                          --
11-- GNAT is free software;  you can  redistribute it  and/or modify it under --
12-- terms of the  GNU General Public License as published  by the Free Soft- --
13-- ware  Foundation;  either version 3,  or (at your option) any later ver- --
14-- sion.  GNAT is distributed in the hope that it will be useful, but WITH- --
15-- OUT ANY WARRANTY;  without even the  implied warranty of MERCHANTABILITY --
16-- or FITNESS FOR A PARTICULAR PURPOSE.                                     --
17--                                                                          --
18-- As a special exception under Section 7 of GPL version 3, you are granted --
19-- additional permissions described in the GCC Runtime Library Exception,   --
20-- version 3.1, as published by the Free Software Foundation.               --
21--                                                                          --
22-- You should have received a copy of the GNU General Public License and    --
23-- a copy of the GCC Runtime Library Exception along with this program;     --
24-- see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see    --
25-- <http://www.gnu.org/licenses/>.                                          --
26--                                                                          --
27-- GNAT was originally developed  by the GNAT team at  New York University. --
28-- Extensive contributions were provided by Ada Core Technologies Inc.      --
29--                                                                          --
30------------------------------------------------------------------------------
31
32--  This package implements the SHA-224 secure hash function as described in
33--  FIPS PUB 180-3. The complete text of FIPS PUB 180-3 can be found at:
34--    http://csrc.nist.gov/publications/fips/fips180-3/fips180-3_final.pdf
35
36--  See the declaration of GNAT.Secure_Hashes.H in g-sechas.ads for complete
37--  documentation.
38
39with GNAT.Secure_Hashes.SHA2_Common;
40with GNAT.Secure_Hashes.SHA2_32;
41with System;
42
43package GNAT.SHA224 is new GNAT.Secure_Hashes.H
44  (Block_Words    => GNAT.Secure_Hashes.SHA2_Common.Block_Words,
45   State_Words    => 8,
46   Hash_Words     => 7,
47   Hash_Bit_Order => System.High_Order_First,
48   Hash_State     => GNAT.Secure_Hashes.SHA2_32.Hash_State,
49   Initial_State  => GNAT.Secure_Hashes.SHA2_32.SHA224_Init_State,
50   Transform      => GNAT.Secure_Hashes.SHA2_32.Transform);
51