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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;