Tuesday, 26 September 2017
arrow HashDigester-x 6.0.0.1 arrow baseCryptoRandomStream.cpp (1)
baseCryptoRandomStream.cpp (1) (Crypto Random Stream base class C++ source code first part file) Print E-mail
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//
// Creator:    http://www.dicelocksecurity.com
// Version:    vers.6.0.0.1
//
// Copyright  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 <memory.h>
#include "baseCryptoRandomStream.h"
 
 
namespace DiceLockSecurity {
 
  namespace CryptoRandomStream {
 
  // Constructor
  BaseCryptoRandomStream::BaseCryptoRandomStream() {
 
    this->cryptoStream = NULL;
    this->bitLength = 0;
    this->reducedBitLength = 0;
    this->position = 0;
  }
 
  // Destructor
  BaseCryptoRandomStream::~BaseCryptoRandomStream() {
 
    this->cryptoStream = NULL;
    this->bitLength = 0;
    this->reducedBitLength = 0;
    this->position = 0;
  }
 
  // Sets the BaseCryptoRandomStream position, minimum value 0
  void BaseCryptoRandomStream::SetBitPosition(unsigned long int newPosition) {
 
    this->position = newPosition;
  }
 
  // Gets the current bit position
  unsigned long int BaseCryptoRandomStream::GetBitPosition(void) {
 
    return this->position; 
  }
 
  // Gets the stream length in bits
  unsigned long int BaseCryptoRandomStream::GetBitLength(void) {
 
    if ( this->reducedBitLength ) {
      return this->reducedBitLength; 
    }
    else {
      return this->bitLength; 
    }
  }
 
  // Gets the stream length in unsigned char type
  unsigned long int BaseCryptoRandomStream::GetUCLength(void) {
 
    if ( this->reducedBitLength ) {
      return (this->reducedBitLength / (BYTEBITS * sizeof(unsigned char))); 
    }
    else {
      return (this->bitLength / (BYTEBITS * sizeof(unsigned char)));  
    }
  } 
 
  // Gets the stream length in unsigned short type
  unsigned long int BaseCryptoRandomStream::GetUSLength(void) {
 
    if ( this->reducedBitLength ) {
      return (this->reducedBitLength / (BYTEBITS * sizeof(unsigned short int))); 
    }
    else {
      return (this->bitLength / (BYTEBITS * sizeof(unsigned short int))); 
    }
  }
 
  // Gets the stream length in unsigned long type
  unsigned long int BaseCryptoRandomStream::GetULLength(void) {
 
    if ( this->reducedBitLength ) {
      return (this->reducedBitLength / (BYTEBITS * sizeof(unsigned long int))); 
    }
    else {
      return (this->bitLength / (BYTEBITS * sizeof(unsigned long int))); 
    }
  }
 
  // Gets the stream length in unsigned 64 bits
  unsigned long long int BaseCryptoRandomStream::Get64Length(void) {
 
    if ( this->reducedBitLength ) {
      return (this->reducedBitLength / (BYTEBITS * sizeof(unsigned long long int))); 
    }
    else {
      return (this->bitLength / (BYTEBITS * sizeof(unsigned long long int))); 
    }
  }
 
  // Gets the pointer to the memory stream 
  void* BaseCryptoRandomStream::GetCryptoRandomStreamMemory(void) {
 
    return this->cryptoStream;   
  }
 
  // Sets the BaseCryptoRandomStream bit at current position and moves pointer to the following bit
  void BaseCryptoRandomStream::SetBitForward(unsigned char newBit) {
 
    this->SetBitPosition(this->position++, newBit);
  }
 
  // Sets the BaseCryptoRandomStream bit at current position and moves pointer to the previous bit
  void BaseCryptoRandomStream::SetBitReverse(unsigned char newBit) {
 
    this->SetBitPosition(this->position--, newBit);
  }
 
  // Gets the BaseCryptoRandomStream bit at current position and moves pointer to the following bit
  unsigned char BaseCryptoRandomStream::GetBitForward(void) {
    unsigned char bit;
 
    bit = ((this->cryptoStream[((this->position) / BYTEBITS)] >> (this->position % BYTEBITS)) & 0x01);
    this->position++;
    return bit;
  }
 
  // Gets the BaseCryptoRandomStream bit at current position and moves pointer to the previous bit
  unsigned char BaseCryptoRandomStream::GetBitReverse(void) {
    unsigned char bit;
 
    bit = ((this->cryptoStream[((this->position) / BYTEBITS)] >> (this->position % BYTEBITS)) & 0x01);
    this->position--;
    return bit;
  }
 
  // Sets the stream to an specified bit value (0 or 1)
  void BaseCryptoRandomStream::FillBit(unsigned char bit) {
    unsigned long int i;
 
    for ( i = 0; i < this->GetBitLength(); i++ )
      this->SetBitPosition(i, bit);
  }
 
  // Sets the stream to an specified bit unsigned char value
  void BaseCryptoRandomStream::FillUC(unsigned char value) {
 
    if (this->cryptoStream != NULL)
      memset(this->cryptoStream, value, this->GetUCLength()); 
  }
      
  // Sets the stream to an specified bit unsigned short value
  void BaseCryptoRandomStream::FillUS(unsigned short int value) {
 
    if (this->cryptoStream != NULL)
      memset(this->cryptoStream, value, this->GetUCLength()); 
  }
      
  // Sets the stream to an specified bit unsigned long int value
  void BaseCryptoRandomStream::FillUL(unsigned long int value) {
 
    if (this->cryptoStream != NULL)
      memset(this->cryptoStream, value, this->GetUCLength()); 
  }
 
  // Sets the bit unsigned char (value 0 or 1) at specified position, position based in array of bits
  void BaseCryptoRandomStream::SetBitPosition(unsigned long int pos, unsigned char bitData) {
 
    switch ( pos % 8 ) {
      case 7 : ((byteBits *)&(this->cryptoStream[pos/BYTEBITS]))->bit7 = bitData;
        break;
      case 6 : ((byteBits *)&(this->cryptoStream[pos/BYTEBITS]))->bit6 = bitData;
        break;
      case 5 : ((byteBits *)&(this->cryptoStream[pos/BYTEBITS]))->bit5 = bitData;
        break;
      case 4 : ((byteBits *)&(this->cryptoStream[pos/BYTEBITS]))->bit4 = bitData;
        break;
      case 3 : ((byteBits *)&(this->cryptoStream[pos/BYTEBITS]))->bit3 = bitData;
        break;
      case 2 : ((byteBits *)&(this->cryptoStream[pos/BYTEBITS]))->bit2 = bitData;
        break;
      case 1 : ((byteBits *)&(this->cryptoStream[pos/BYTEBITS]))->bit1 = bitData;
        break;
      case 0 : ((byteBits *)&(this->cryptoStream[pos/BYTEBITS]))->bit0 = bitData;
        break;
    }
  }
 
  // Sets the unsigned char at specified position, position based in array of unsigned char
  void BaseCryptoRandomStream::SetUCPosition(unsigned long int pos, unsigned char charData) {
    unsigned char* pointer;
 
    try {
      if ( pos >= this->GetUCLength() )
        throw "Positions exceeded stream length !";
      else {
        pointer = (unsigned char *)(this->cryptoStream + (pos * sizeof(unsigned char)));
        (*pointer) = charData;
      }
    }
    catch (char* str) {
      throw str;
    }
  }
 
  // Sets the unsigned short at specified position, position based in array of unsigned short
  void BaseCryptoRandomStream::SetUSPosition(unsigned long int pos, unsigned short int shortData) {
    unsigned short int* pointer;
 
    try {
      if ( pos >= this->GetUSLength() )
        throw "Positions exceeded stream length !";
      else {
        pointer = (unsigned short int *)(this->cryptoStream + (pos * sizeof(unsigned short int)));
        (*pointer) = shortData;
      }
    }
    catch (char* str) {
      throw str;
    }
  }
      
  // Sets the unsigned long at specified position, position based in array of unsigned long
  void BaseCryptoRandomStream::SetULPosition(unsigned long int pos, unsigned long int longData) {
    unsigned long int* pointer;
 
    try {
      if ( pos >= this->GetULLength() )
        throw "Positions exceeded stream length !";
      else {
        pointer = (unsigned long int *)(this->cryptoStream + (pos * sizeof(unsigned long int)));
        (*pointer) = longData;
      }
    }
    catch (char* str) {
      throw str;
    }
  }
 
  // Sets the unsigned 64 bit at specified position, position based in array of unsigned long long int
  void BaseCryptoRandomStream::Set64Position(unsigned long long int pos, unsigned long long int longData) {
    unsigned long long int* pointer;
 
    try {
      if ( pos >= this->Get64Length() )
        throw "Positions exceeded stream length !";
      else {
        pointer = (unsigned long long int *)(this->cryptoStream + (pos * sizeof(unsigned long long int)));
        (*pointer) = longData;
      }
    }
    catch (char* str) {
      throw str;
    }
  }
 
  // Gets the bit unsigned char (vakue  0 or 1) at specified position, position based in array of bits
  unsigned char BaseCryptoRandomStream::GetBitPosition(unsigned long int pos) {
 
    try {
      if ( pos >= this->GetBitLength() )
        throw "Positions exceeded stream length !";
      else
        return ( ((this->cryptoStream[(pos / BYTEBITS)] >> (pos % BYTEBITS)) & 0x01) );
    }
    catch (char* str) {
      throw str;
    }
  }