| ------------------------------------------------------------------------------ |
| -- -- |
| -- GNAT LIBRARY COMPONENTS -- |
| -- -- |
| -- G N A T . S E C U R E _ H A S H E S . S H A 2 _ 6 4 -- |
| -- -- |
| -- S p e c -- |
| -- -- |
| -- 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. -- |
| -- -- |
| ------------------------------------------------------------------------------ |
| |
| -- This package provides support for the 64-bit FIPS PUB 180-3 functions |
| -- SHA-384 and SHA-512. |
| |
| -- This is an internal unit and should not be used directly in applications. |
| -- Use GNAT.SHA384 and GNAT.SHA512 instead. |
| |
| with Interfaces; |
| with GNAT.Byte_Swapping; |
| |
| with GNAT.Secure_Hashes.SHA2_Common; |
| |
| package GNAT.Secure_Hashes.SHA2_64 is |
| subtype Word is Interfaces.Unsigned_64; |
| |
| package Hash_State is new Hash_Function_State |
| (Word => Word, |
| Swap => GNAT.Byte_Swapping.Swap8, |
| Hash_Bit_Order => System.High_Order_First); |
| -- SHA-384 and SHA-512 operate on 64-bit big endian words |
| |
| K : Hash_State.State (0 .. 79) := |
| (16#428a2f98d728ae22#, 16#7137449123ef65cd#, |
| 16#b5c0fbcfec4d3b2f#, 16#e9b5dba58189dbbc#, |
| 16#3956c25bf348b538#, 16#59f111f1b605d019#, |
| 16#923f82a4af194f9b#, 16#ab1c5ed5da6d8118#, |
| 16#d807aa98a3030242#, 16#12835b0145706fbe#, |
| 16#243185be4ee4b28c#, 16#550c7dc3d5ffb4e2#, |
| 16#72be5d74f27b896f#, 16#80deb1fe3b1696b1#, |
| 16#9bdc06a725c71235#, 16#c19bf174cf692694#, |
| 16#e49b69c19ef14ad2#, 16#efbe4786384f25e3#, |
| 16#0fc19dc68b8cd5b5#, 16#240ca1cc77ac9c65#, |
| 16#2de92c6f592b0275#, 16#4a7484aa6ea6e483#, |
| 16#5cb0a9dcbd41fbd4#, 16#76f988da831153b5#, |
| 16#983e5152ee66dfab#, 16#a831c66d2db43210#, |
| 16#b00327c898fb213f#, 16#bf597fc7beef0ee4#, |
| 16#c6e00bf33da88fc2#, 16#d5a79147930aa725#, |
| 16#06ca6351e003826f#, 16#142929670a0e6e70#, |
| 16#27b70a8546d22ffc#, 16#2e1b21385c26c926#, |
| 16#4d2c6dfc5ac42aed#, 16#53380d139d95b3df#, |
| 16#650a73548baf63de#, 16#766a0abb3c77b2a8#, |
| 16#81c2c92e47edaee6#, 16#92722c851482353b#, |
| 16#a2bfe8a14cf10364#, 16#a81a664bbc423001#, |
| 16#c24b8b70d0f89791#, 16#c76c51a30654be30#, |
| 16#d192e819d6ef5218#, 16#d69906245565a910#, |
| 16#f40e35855771202a#, 16#106aa07032bbd1b8#, |
| 16#19a4c116b8d2d0c8#, 16#1e376c085141ab53#, |
| 16#2748774cdf8eeb99#, 16#34b0bcb5e19b48a8#, |
| 16#391c0cb3c5c95a63#, 16#4ed8aa4ae3418acb#, |
| 16#5b9cca4f7763e373#, 16#682e6ff3d6b2b8a3#, |
| 16#748f82ee5defb2fc#, 16#78a5636f43172f60#, |
| 16#84c87814a1f0ab72#, 16#8cc702081a6439ec#, |
| 16#90befffa23631e28#, 16#a4506cebde82bde9#, |
| 16#bef9a3f7b2c67915#, 16#c67178f2e372532b#, |
| 16#ca273eceea26619c#, 16#d186b8c721c0c207#, |
| 16#eada7dd6cde0eb1e#, 16#f57d4f7fee6ed178#, |
| 16#06f067aa72176fba#, 16#0a637dc5a2c898a6#, |
| 16#113f9804bef90dae#, 16#1b710b35131c471b#, |
| 16#28db77f523047d84#, 16#32caab7b40c72493#, |
| 16#3c9ebe0a15c9bebc#, 16#431d67c49c100d4c#, |
| 16#4cc5d4becb3e42b6#, 16#597f299cfc657e2a#, |
| 16#5fcb6fab3ad6faec#, 16#6c44198c4a475817#); |
| -- Constants from FIPS PUB 180-3 |
| |
| function Sigma0 (X : Word) return Word; |
| function Sigma1 (X : Word) return Word; |
| function S0 (X : Word) return Word; |
| function S1 (X : Word) return Word; |
| pragma Inline (Sigma0, Sigma1, S0, S1); |
| -- Elementary functions Sigma^512_0, Sigma^512_1, sigma^512_0, sigma^512_1 |
| -- from FIPS PUB 180-3. |
| |
| procedure Transform is new SHA2_Common.Transform |
| (Hash_State => Hash_State, |
| K => K, |
| Rounds => 80, |
| Sigma0 => Sigma0, |
| Sigma1 => Sigma1, |
| S0 => S0, |
| S1 => S1); |
| |
| SHA384_Init_State : constant Hash_State.State := |
| (0 => 16#cbbb9d5dc1059ed8#, |
| 1 => 16#629a292a367cd507#, |
| 2 => 16#9159015a3070dd17#, |
| 3 => 16#152fecd8f70e5939#, |
| 4 => 16#67332667ffc00b31#, |
| 5 => 16#8eb44a8768581511#, |
| 6 => 16#db0c2e0d64f98fa7#, |
| 7 => 16#47b5481dbefa4fa4#); |
| SHA512_Init_State : constant Hash_State.State := |
| (0 => 16#6a09e667f3bcc908#, |
| 1 => 16#bb67ae8584caa73b#, |
| 2 => 16#3c6ef372fe94f82b#, |
| 3 => 16#a54ff53a5f1d36f1#, |
| 4 => 16#510e527fade682d1#, |
| 5 => 16#9b05688c2b3e6c1f#, |
| 6 => 16#1f83d9abfb41bd6b#, |
| 7 => 16#5be0cd19137e2179#); |
| -- Initialization vectors from FIPS PUB 180-3 |
| |
| end GNAT.Secure_Hashes.SHA2_64; |
