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[/] [openrisc/] [tags/] [gnu-src/] [gcc-4.5.1/] [gcc-4.5.1-or32-1.0rc3/] [gcc/] [ada/] [g-sehamd.ads] - Rev 281
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------------------------------------------------------------------------------ -- -- -- 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) 2002-2009, 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 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;
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