include/MUtils/Hash.h

   1 ///////////////////////////////////////////////////////////////////////////////
   2 // MuldeR's Utilities for Qt
   3 // Copyright (C) 2004-2016 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 #pragma once
  23
  24 //MUtils
  25 #include <MUtils/Global.h>
  26
  27 //Qt
  28 #include <QByteArray>
  29 #include <QFile>
  30
  31 namespace MUtils
  32 {
  33         namespace Hash
  34         {
  35                 static const quint16 HASH_BLAKE2_512 = 0x0000U;
  36                 static const quint16 HASH_KECCAK_224 = 0x0100U;
  37                 static const quint16 HASH_KECCAK_256 = 0x0101U;
  38                 static const quint16 HASH_KECCAK_384 = 0x0102U;
  39                 static const quint16 HASH_KECCAK_512 = 0x0103U;
  40
  41                 class MUTILS_API Hash
  42                 {
  43                 public:
  44                         virtual ~Hash(void) {};
  45
  46                         bool update(const quint8 *const data, const quint32 len) { return process(data, len); }
  47                         bool update(const QByteArray &data) { return process(((const quint8*)data.constData()), ((quint32)data.length())); }
  48                         bool update(QFile &file);
  49
  50                         QByteArray digest(const bool bAsHex = true) { return bAsHex ? finalize().toHex() : finalize(); }
  51
  52                 protected:
  53                         Hash(const char* key = NULL) {/*nothing to do*/};
  54                         virtual bool process(const quint8 *const data, const quint32 len) = 0;
  55                         virtual QByteArray finalize(void) = 0;
  56
  57                 private:
  58                         Hash &operator=(const Hash&) { throw "Disabled"; }
  59                         Hash(const Hash&)            { throw "Disabled"; }
  60                 };
  61
  62                 MUTILS_API Hash *create(const quint16 &hashId, const char *const key = NULL);
  63         }
  64 }