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------------------------------------------------------------------------------
--                                                                          --
--                         GNAT LIBRARY COMPONENTS                          --
--                                                                          --
--           G N A T . S E C U R E _ H A S H E S . S H A 2 _ 3 2            --
--                                                                          --
--                                 B o d y                                  --
--                                                                          --
--           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.      --
--                                                                          --
------------------------------------------------------------------------------
 
package body GNAT.Secure_Hashes.SHA2_32 is
 
   use Interfaces;
 
   ------------
   -- Sigma0 --
   ------------
 
   function Sigma0 (X : Word) return Word is
   begin
      return Rotate_Right (X, 2)
         xor Rotate_Right (X, 13)
         xor Rotate_Right (X, 22);
   end Sigma0;
 
   ------------
   -- Sigma1 --
   ------------
 
   function Sigma1 (X : Word) return Word is
   begin
      return Rotate_Right (X, 6)
         xor Rotate_Right (X, 11)
         xor Rotate_Right (X, 25);
   end Sigma1;
 
   --------
   -- S0 --
   --------
 
   function S0 (X : Word) return Word is
   begin
      return Rotate_Right (X, 7)
         xor Rotate_Right (X, 18)
         xor Shift_Right  (X, 3);
   end S0;
 
   --------
   -- S1 --
   --------
 
   function S1 (X : Word) return Word is
   begin
      return Rotate_Right (X, 17)
         xor Rotate_Right (X, 19)
         xor Shift_Right  (X, 10);
   end S1;
 
end GNAT.Secure_Hashes.SHA2_32;

Line No.	Rev	Author	Line
1	281	jeremybenn	`------------------------------------------------------------------------------`
2			`-- --`
3			`-- GNAT LIBRARY COMPONENTS --`
4			`-- --`
5			`-- G N A T . S E C U R E _ H A S H E S . S H A 2 _ 3 2 --`
6			`-- --`
7			`-- B o d y --`
8			`-- --`
9			`-- Copyright (C) 2009, 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			`package body GNAT.Secure_Hashes.SHA2_32 is`
33
34			`use Interfaces;`
35
36			`------------`
37			`-- Sigma0 --`
38			`------------`
39
40			`function Sigma0 (X : Word) return Word is`
41			`begin`
42			`return Rotate_Right (X, 2)`
43			`xor Rotate_Right (X, 13)`
44			`xor Rotate_Right (X, 22);`
45			`end Sigma0;`
46
47			`------------`
48			`-- Sigma1 --`
49			`------------`
50
51			`function Sigma1 (X : Word) return Word is`
52			`begin`
53			`return Rotate_Right (X, 6)`
54			`xor Rotate_Right (X, 11)`
55			`xor Rotate_Right (X, 25);`
56			`end Sigma1;`
57
58			`--------`
59			`-- S0 --`
60			`--------`
61
62			`function S0 (X : Word) return Word is`
63			`begin`
64			`return Rotate_Right (X, 7)`
65			`xor Rotate_Right (X, 18)`
66			`xor Shift_Right (X, 3);`
67			`end S0;`
68
69			`--------`
70			`-- S1 --`
71			`--------`
72
73			`function S1 (X : Word) return Word is`
74			`begin`
75			`return Rotate_Right (X, 17)`
76			`xor Rotate_Right (X, 19)`
77			`xor Shift_Right (X, 10);`
78			`end S1;`
79
80			`end GNAT.Secure_Hashes.SHA2_32;`

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[/] [openrisc/] [trunk/] [gnu-src/] [gcc-4.5.1/] [gcc/] [ada/] [g-shsh32.adb] - Blame information for rev 307