src/Hash_Keccak.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // MuldeR's Utilities for Qt
   3 // Copyright (C) 2004-2017 LoRd_MuldeR <MuldeR2@GMX.de>
   4 //
   5 // This library is free software; you can redistribute it and/or
   6 // modify it under the terms of the GNU Lesser General Public
   7 // License as published by the Free Software Foundation; either
   8 // version 2.1 of the License, or (at your option) any later version.
   9 //
  10 // This library is distributed in the hope that it will be useful,
  11 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13 // Lesser General Public License for more details.
  14 //
  15 // You should have received a copy of the GNU Lesser General Public
  16 // License along with this library; if not, write to the Free Software
  17 // Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
  18 //
  19 // http://www.gnu.org/licenses/lgpl-2.1.txt
  20 //////////////////////////////////////////////////////////////////////////////////
  21
  22 /***************************************************************************
  23 **                                                                        **
  24 **  QKeccakHash, an API wrapper bringing the optimized implementation of  **
  25 **  Keccak (http://keccak.noekeon.org/) to Qt.                            **
  26 **  Copyright (C) 2013 Emanuel Eichhammer                                 **
  27 **                                                                        **
  28 **  This program is free software: you can redistribute it and/or modify  **
  29 **  it under the terms of the GNU General Public License as published by  **
  30 **  the Free Software Foundation, either version 3 of the License, or     **
  31 **  (at your option) any later version.                                   **
  32 **                                                                        **
  33 **  This program is distributed in the hope that it will be useful,       **
  34 **  but WITHOUT ANY WARRANTY; without even the implied warranty of        **
  35 **  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         **
  36 **  GNU General Public License for more details.                          **
  37 **                                                                        **
  38 **  You should have received a copy of the GNU General Public License     **
  39 **  along with this program.  If not, see http://www.gnu.org/licenses/.   **
  40 **                                                                        **
  41 ****************************************************************************
  42 **           Author: Emanuel Eichhammer                                   **
  43 **  Website/Contact: http://www.WorksLikeClockwork.com/                   **
  44 **             Date: 12.01.12                                             **
  45 ****************************************************************************/
  46
  47 #pragma once
  48
  49 //MUtils
  50 #include <MUtils/Global.h>
  51 #include <MUtils/Hash.h>
  52
  53 //Qt
  54 #include <QString>
  55 #include <QByteArray>
  56 #include <QFile>
  57
  58 namespace MUtils
  59 {
  60         namespace Hash
  61         {
  62                 namespace Internal
  63                 {
  64                         // Section from KeccakSponge.h
  65                         // needed here, since hashState needs to be explicitly 32-byte aligned and therefore can't be
  66                         // transformed into a class (in order to forward declarate) like in the other hash wrappers.
  67                         namespace KeccakImpl
  68                         {
  69                                 #define KeccakPermutationSize 1600
  70                                 #define KeccakPermutationSizeInBytes (KeccakPermutationSize/8)
  71                                 #define KeccakMaximumRate 1536
  72                                 #define KeccakMaximumRateInBytes (KeccakMaximumRate/8)
  73
  74                                 #if defined(__GNUC__)
  75                                 #define ALIGN __attribute__ ((aligned(32)))
  76                                 #elif defined(_MSC_VER)
  77                                 #define ALIGN __declspec(align(32))
  78                                 #else
  79                                 #define ALIGN
  80                                 #endif
  81
  82                                 ALIGN typedef struct spongeStateStruct
  83                                 {
  84                                         ALIGN unsigned char state[KeccakPermutationSizeInBytes];
  85                                         ALIGN unsigned char dataQueue[KeccakMaximumRateInBytes];
  86                                         unsigned int rate;
  87                                         unsigned int capacity;
  88                                         unsigned int bitsInQueue;
  89                                         unsigned int fixedOutputLength;
  90                                         int squeezing;
  91                                         unsigned int bitsAvailableForSqueezing;
  92                                 }
  93                                 spongeState;
  94                                 typedef spongeState hashState;
  95                         }
  96                         // End Section from KeccakSponge.h
  97                 }
  98
  99                 class MUTILS_API Keccak : public Hash
 100                 {
 101                 public:
 102                         enum HashBits {hb224, hb256, hb384, hb512};
 103
 104                         Keccak();
 105                         virtual ~Keccak();
 106
 107                         bool init(const HashBits hashBits=hb256);
 108
 109                         static Keccak *create(const HashBits hashBits = hb256, const char *const key = NULL);
 110                         static bool selfTest(void);
 111
 112                 protected:
 113                         bool m_initialized;
 114                         Internal::KeccakImpl::hashState *m_state;
 115
 116                         virtual bool process(const quint8 *const data, const quint32 len);
 117                         virtual QByteArray finalize(void);
 118                 };
 119         }
 120 };