Thursday, 19 October 2017

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DicelockSecurity (version 9.X)

Linux - Source Code

DiceLock-x 9.0.0.1
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HashDigester-x 6.0.0.1
Previous Versions
DiceLock-x 8.0.0.1
runsTest.cpp (Runs random number test C++ source code file) Print E-mail
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//
// Creator:    http://www.dicelocksecurity.com
// Version:    vers.8.0.0.1
//
// Copyright (C) 2008-2012 DiceLock Security, LLC. All rights reserved.
//
//                               DISCLAIMER
//
// THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESSED OR IMPLIED WARRANTIES,
// INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
// AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
// REGENTS OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
// PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
// OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
// WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
// OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
// ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
// 
// DICELOCK IS A REGISTERED TRADEMARK OR TRADEMARK OF THE OWNERS.
// 
 
#include <stdlib.h>
#include <math.h>
#include <float.h>
#include "runsTest.h"
 
 
namespace DiceLockSecurity {
  
  namespace RandomTest {
 
  // Random Test Class enumerator name
  const RandomTests RunsTest::test = Runs;
  // Random Test Class minimum stream length
  const unsigned long int  RunsTest::minimumLength = 100;
 
  // Constructor, default 
  RunsTest::RunsTest() {
 
    this->pi = 0.0;
    this->totalNumberRuns = 0.0;
    this->argument = 0.0;
  }
 
 
  // Constructor with a MathematicalFunctions object instantiated 
  RunsTest::RunsTest(MathematicalFunctions* mathFuncObj) {
 
    this->pi = 0.0;
    this->totalNumberRuns = 0.0;
    this->argument = 0.0;
  }
 
  // Destructor
  RunsTest::~RunsTest() {
 
    this->pi = 0.0;
    this->totalNumberRuns = 0.0;
    this->argument = 0.0;
  }
  
  // Gets the BaseRandomTest random state of the last executed BaseCryptoRandomStream
  bool RunsTest::IsRandom(void) {
 
    return BaseRandomTest::IsRandom();
  }
 
  // Tests randomness of the BaseCryptoRandomStream and returns the random value
  bool RunsTest::IsRandom(BaseCryptoRandomStream* bitStream) {
    unsigned long int i;
    unsigned short int *r;
    double product, sum;
  
    if (bitStream->GetBitLength() < this->GetMinimumLength()) {
      this->error = InsufficientNumberOfBits;
      this->random = false;
      return this->random;
    }
    bitStream->SetBitPosition(0);
    this->error = NoError;
    if ((r = (unsigned short int *) calloc(bitStream->GetBitLength(),sizeof(unsigned short int))) == NULL) {
      this->error = InsufficientMemory;
      this->random = false;
    }
    else {
      sum = 0.0;
      for(i = 0; i < bitStream->GetBitLength(); i++)
        sum += (int)bitStream->GetBitForward();
      this->pi = sum/bitStream->GetBitLength();
      for(i = 0; i < bitStream->GetBitLength()-1; i++) {
        if ((int)bitStream->GetBitPosition(i) == (int)bitStream->GetBitPosition(i+1))
          r[i] = 0;
        else
          r[i] = 1;
      } 
      this->totalNumberRuns = 0;
      for(i = 0; i < bitStream->GetBitLength()-1; i++)
            this->totalNumberRuns += r[i];
        this->totalNumberRuns++;
      product = this->pi * (1.e0 - this->pi);
      this->argument = fabs(this->totalNumberRuns - 2.e0*bitStream->GetBitLength()*product)/(2.e0*sqrt(2.e0*bitStream->GetBitLength())*product);
      this->pValue = this->mathFuncs->ErFc(this->argument);
      if (this->pValue < this->alpha) {            
        this->random = false;
      }
      else {
        this->random = true;
      }
      free(r);
      if (isNegative(this->pValue) || isGreaterThanOne(this->pValue)) {
        this->random = false;
            this->error = PValueOutOfRange;
      }
    }
    return this->random;
  }
 
  // Initializes the object
  void RunsTest::Initialize(void) {
 
    BaseRandomTest::Initialize();
    this->pi = 0.0;
    this->totalNumberRuns = 0.0;
    this->argument = 0.0;
  }
 
  // Gets the type of the object
  RandomTests RunsTest::GetType(void) {
 
    return this->test;
  }
 
  // Gets the minimum random stream length
  unsigned long int RunsTest::GetMinimumLength(void) {
 
    return this->minimumLength;
  }
 
  // Gets the "pi" result
  double RunsTest::GetPi(void) {
 
    return this->pi;
  }
 
  // Gets the total number of runs result 
  double RunsTest::GetTotalNumberRuns(void) {
 
    return this->totalNumberRuns;
  }
 
  // Gets the argument result
  double RunsTest::GetArgument(void) {
 
    return this->argument;
  }
  }
}