Friday, 20 October 2017
arrow JDiceChecker 5.0.0.1 arrow RandomTest arrow BaseRandomTest.java
BaseRandomTest.java (random number test base class) Print E-mail
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//
// Creator:    http://www.dicelocksecurity.com
// Version:    vers.5.0.0.1
//
// Copyright 2011 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.
// 
// Environment:
// java version "1.6.0_29"
// Java(TM) SE Runtime Environment (build 1.6.0_29-b11)
// Java HotSpot(TM) Server VM (build 20.4-b02, mixed mode)
// 
 
package com.dicelocksecurity.jdicechecker.RandomTest;
 
import com.dicelocksecurity.jdicechecker.CryptoRandomStream.BaseCryptoRandomStream;
 
/**
 * Base class of all random number tests implemented
 * 
 * @author      Angel Ferré @ DiceLock Security
 * @version     5.0.0.1
 * @since       2011-09-29
 */
public abstract class BaseRandomTest {
 
  /**
   * "alpha" parameter setting confidence level
   */ 
    protected double                alpha;
  /**
   * "pValue" result to verify randomness properties
   */ 
    protected double                pValue;
  /**
   * "random" result
   * true:    if last checked stream was a randomized stream
   * false:   if last checked stream was not a randomized stream
   */ 
    protected boolean               random;
  /**
   * "error"    RandomTestErrors enumeration value indicating the error (if has been produced) of last stream checked
   */ 
    protected RandomTestErrors      error;
  /**
   * "MathematicalFunctions" object that is being used by random number test
   */ 
    protected MathematicalFunctions mathFuncs;
  /**
   * boolean indicating if "mathFuncs" object has been internally created
   * true:    if "mathFuncs" object has been instantiated within random number test object
   * false:   if "mathFuncs" object has been instantiated outside random number test object
   */ 
    protected boolean               autoMathFunc;
  
  /**
   * Constructor, default 
   */ 
    public BaseRandomTest() {
 
      super();
 
      this.error = RandomTestErrors.NoError;
        this.alpha = 0.0;
        this.pValue = 0.0;
        this.mathFuncs = new MathematicalFunctions();
        if (this.mathFuncs == null) {
          this.error = RandomTestErrors.MathematicalFunctionsError;
          this.autoMathFunc = false;
        }
        else {
          this.autoMathFunc = true;
        }
        this.random = false;
    }
 
  /**
   * Constructor with a MathematicalFunctions object instantiated 
   */ 
    public BaseRandomTest(MathematicalFunctions mathFuncObj) {
      
      this.error = RandomTestErrors.NoError;
        if (mathFuncObj != null) { 
          this.mathFuncs = mathFuncObj;
          this.autoMathFunc = false;
        }
        else {
          this.mathFuncs = new MathematicalFunctions();
          if (this.mathFuncs == null) {
            this.error = RandomTestErrors.MathematicalFunctionsError;
            this.autoMathFunc = false;
          }
          else {
            this.autoMathFunc = true;
          }
        }
        this.alpha = 0.0;
        this.pValue = 0.0;
        this.random = false;
    }
 
  /**
   * Destructor
   */ 
    public void finalize() {
      
        this.alpha = 0.0;
        this.pValue = 0.0;
        if ((this.autoMathFunc) && (this.mathFuncs != null)) {
          this.mathFuncs = null;
        }
        this.mathFuncs = null;
        this.random = false;
        this.error = RandomTestErrors.NoError;
    }
 
  /**
   * Sets the BaseRandomTest alpha margin
   */ 
    public void SetAlpha(double newAlpha) {
      
      this.alpha = newAlpha;
    }
 
  /**
   * Gets the BaseRandomTest alpha margin
   */ 
    public double GetAlpha() {
      
      return this.alpha;
    }
 
  /**
   * Gets the BaseRandomTest pValue
   */ 
    public double GetPValue() {
        
      return this.pValue;
    }
 
  /**
   * Gets the BaseRandomTest error of the last executed BaseCryptoRandomStream
   */ 
    public RandomTestErrors GetError() {
      
      return this.error;
    }
 
  /**
   * Gets the BaseRandomTest random state of the last executed BaseCryptoRandomStream
   */ 
    public boolean IsRandom() {
      
      return this.random;
    }
 
  /**
   * Tests the BaseCryptoRandomStream executed and returns the random value
   */ 
    abstract public boolean IsRandom(BaseCryptoRandomStream stream);
 
  /**
   * Initialize the object
   */ 
    public void Initialize() {
      
      this.pValue = 0.0;
      this.random = false;
      this.error = RandomTestErrors.NoError;
   }
 
  /**
   * Gets the type of the object
   */ 
    abstract public RandomTests GetType();
 
  /**
   * Gets the minimum stream length 
   */ 
    abstract public int GetMinimumLength();
 
}