Mercurial > hg > CbC > CbC_gcc
comparison gcc/ada/libgnat/g-shsh32.adb @ 111:04ced10e8804
gcc 7
| author | kono |
|---|---|
| date | Fri, 27 Oct 2017 22:46:09 +0900 |
| parents | |
| children | 84e7813d76e9 |
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| 68:561a7518be6b | 111:04ced10e8804 |
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| 1 ------------------------------------------------------------------------------ | |
| 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) 2009-2017, 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; |