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------------------------------------------------------------------------------
-- --
-- GNAT LIBRARY COMPONENTS --
-- --
-- G N A T . S H A 2 5 6 --
-- --
-- S p e c --
-- --
-- Copyright (C) 2009, 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 implements the SHA-256 secure hash function as described in
-- FIPS PUB 180-3. The complete text of FIPS PUB 180-3 can be found at:
-- http://csrc.nist.gov/publications/fips/fips180-3/fips180-3_final.pdf
-- See the declaration of GNAT.Secure_Hashes.H in g-sechas.ads for complete
-- documentation.
with GNAT.Secure_Hashes.SHA2_Common;
with GNAT.Secure_Hashes.SHA2_32;
with System;
package GNAT.SHA256 is new GNAT.Secure_Hashes.H
(Block_Words => GNAT.Secure_Hashes.SHA2_Common.Block_Words,
State_Words => 8,
Hash_Words => 8,
Hash_Bit_Order => System.High_Order_First,
Hash_State => GNAT.Secure_Hashes.SHA2_32.Hash_State,
Initial_State => GNAT.Secure_Hashes.SHA2_32.SHA256_Init_State,
Transform => GNAT.Secure_Hashes.SHA2_32.Transform);
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