projects / thirdparty / gcc.git / blame
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|---|---|---|
| 47257438 AC |
1 | ------------------------------------------------------------------------------ |
| 2 | -- -- | |
| fed1bd44 | 3 | -- GNAT LIBRARY COMPONENTS -- |
| 47257438 AC |
4 | -- -- |
| 5 | -- G N A T . S H A 2 5 6 -- | |
| 6 | -- -- | |
| 7 | -- S p e c -- | |
| 8 | -- -- | |
| 4b490c1e | 9 | -- Copyright (C) 2009-2020, Free Software Foundation, Inc. -- |
| 47257438 AC |
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 | ||
| 308e6f3a | 32 | -- This package implements the SHA-256 secure hash function as described in |
| eaf18088 AC |
33 | -- FIPS PUB 180-3. The complete text of FIPS PUB 180-3 can be found at: |
| 34 | -- http://csrc.nist.gov/publications/fips/fips180-3/fips180-3_final.pdf | |
| 35 | ||
| 36e76408 | 36 | -- See the declaration of GNAT.Secure_Hashes.H in g-sechas.ads for complete |
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37 | -- documentation. |
| 38 | ||
| 36e76408 TQ |
39 | with GNAT.Secure_Hashes.SHA2_Common; |
| 40 | with GNAT.Secure_Hashes.SHA2_32; | |
| 41 | with System; | |
| c5fdd4ad | 42 | |
| 36e76408 TQ |
43 | package GNAT.SHA256 is new GNAT.Secure_Hashes.H |
| 44 | (Block_Words => GNAT.Secure_Hashes.SHA2_Common.Block_Words, | |
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45 | State_Words => 8, |
| 46 | Hash_Words => 8, | |
| 47 | Hash_Bit_Order => System.High_Order_First, | |
| 36e76408 TQ |
48 | Hash_State => GNAT.Secure_Hashes.SHA2_32.Hash_State, |
| 49 | Initial_State => GNAT.Secure_Hashes.SHA2_32.SHA256_Init_State, | |
| 50 | Transform => GNAT.Secure_Hashes.SHA2_32.Transform); |