src/RandomFunctions.cpp

   1 //
   2 // This file is part of the aMule Project.
   3 //
   4 // Copyright (c) 2003-2011 aMule Team ( admin@amule.org / http://www.amule.org )
   5 //
   6 // Any parts of this program derived from the xMule, lMule or eMule project,
   7 // or contributed by third-party developers are copyrighted by their
   8 // respective authors.
   9 //
  10 // This program is free software; you can redistribute it and/or modify
  11 // it under the terms of the GNU General Public License as published by
  12 // the Free Software Foundation; either version 2 of the License, or
  13 // (at your option) any later version.
  14 //
  15 // This program is distributed in the hope that it will be useful,
  16 // but WITHOUT ANY WARRANTY; without even the implied warranty of
  17 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18 // GNU General Public License for more details.
  19 //
  20 // You should have received a copy of the GNU General Public License
  21 // along with this program; if not, write to the Free Software
  22 // Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301, USA
  23 //
  24
  25 // The backtrace functions contain modified code from libYaMa, (c) Venkatesha Murthy G.
  26 // You can check libYaMa at http://personal.pavanashree.org/libyama/
  27
  28 #include "RandomFunctions.h"    // Interface declarations
  29 #include "CryptoPP_Inc.h"       // Needed for Crypto functions
  30
  31 static CryptoPP::AutoSeededRandomPool cryptRandomGen;
  32
  33 const CryptoPP::AutoSeededRandomPool& GetRandomPool() { return cryptRandomGen; }
  34
  35 uint8_t GetRandomUint8()
  36 {
  37         return cryptRandomGen.GenerateByte();
  38 }
  39
  40 uint16_t GetRandomUint16()
  41 {
  42         return (uint16_t)cryptRandomGen.GenerateWord32(0x0000, 0xFFFF);
  43 }
  44
  45 uint32_t GetRandomUint32()
  46 {
  47         return cryptRandomGen.GenerateWord32();
  48 }
  49
  50 uint64_t GetRandomUint64()
  51 {
  52         return ((uint64_t)GetRandomUint32() << 32) + GetRandomUint32();
  53 }
  54
  55 namespace Kademlia {
  56         CUInt128 GetRandomUint128()
  57         {
  58                 uint8_t randomBytes[16];
  59                 cryptRandomGen.GenerateBlock(randomBytes, 16);
  60                 return CUInt128(randomBytes);
  61         }
  62 }
  63
  64 // File_checked_for_headers