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arrow DiceLock-x 9.0.0.1 arrow decreaseBase0IndexModifier_6_0_0_1.cpp
decreaseBase0IndexModifier_6_0_0_1.cpp (Indexed Base 0 Decr. Key Modifier C++ source code file) Print E-mail
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//
// Creator:    http://www.dicelocksecurity.com
// Version:    vers.9.0.0.1
//
// Copyright (C) 2011-2013 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.
// 
// DICELOCK IS PROTECTED BY US PATENT 7508945 AND EUROPEAN PATENT 1182777 WHERE APPLICABLE.
//
// LICENSE INFORMATION CAN BE OBTAINED AT CORPORATE WEB SITE
//
 
#include "decreaseBase0IndexModifier_6_0_0_1.h"
#include "arithmeticFunctions.h"
#include "defaultCryptoRandomStream.h"
#include "ANSI_X_923.h"
#include "ISO_IEC_9797_1.h"
#include "PKCS7.h"
 
 
using namespace DiceLockSecurity; 
 
 
namespace DiceLockSecurity {
 
  namespace Cipher {
    
    namespace DiceLock {
 
      namespace IndexModifier {
 
  // Index modifier type enumerator name
  const IndexModifiers  DecreaseBase0IndexModifier_6_0_0_1::indexModifierType = DecreaseBase0IndexModifierType_6_0_0_1;
 
  // Constructor, default 
  DecreaseBase0IndexModifier_6_0_0_1::DecreaseBase0IndexModifier_6_0_0_1() {
 
    this->index = NULL;
    this->autoIndex = false;
    this->baseIndex = NULL;
    this->autoBaseIndex = false;
    this->arithmeticFunctions = new ArithmeticFunctions();
  }
 
  // Destructor
  DecreaseBase0IndexModifier_6_0_0_1::~DecreaseBase0IndexModifier_6_0_0_1() {
    
    if ( this->autoIndex ) {
      delete (DefaultCryptoRandomStream*)this->index;
      this->autoIndex = false;
    }
    this->index = NULL;
    if ( this->autoBaseIndex ) {
      delete (DefaultCryptoRandomStream*)this->baseIndex;
      this->autoBaseIndex = false;
    }
    this->baseIndex = NULL;
    delete this->arithmeticFunctions;
  }
 
  // Initializes the object
  void DecreaseBase0IndexModifier_6_0_0_1::Initialize(void) {
 
    if ( this->index != NULL ) {
      this->index->FillUC(0);
    }
    if ( this->baseIndex != NULL ) {
      this->baseIndex->FillUC(0);
    }
  }
 
  // Gets the index length in bits 
  unsigned long int DecreaseBase0IndexModifier_6_0_0_1::GetBitIndexLength(void) {
 
    return this->index->GetBitLength();
  }
 
  // Gets the index length in unsigned chars
  unsigned long int DecreaseBase0IndexModifier_6_0_0_1::GetUCIndexLength(void) {
 
    return this->index->GetUCLength();
  }
 
  // Gets the index length in unsigned short ints
  unsigned long int DecreaseBase0IndexModifier_6_0_0_1::GetUSIndexLength(void) {
 
    return this->index->GetUSLength();
  }
 
  // Gets the index length in unsigned long ints
  unsigned long int DecreaseBase0IndexModifier_6_0_0_1::GetULIndexLength(void) {
 
    return this->index->GetULLength();
  }
 
  // Gets the next key based on the index
  void DecreaseBase0IndexModifier_6_0_0_1::GenerateNextKeyIndexed(BaseCryptoRandomStream* key, BaseCryptoRandomStream* transformedKey) {
    unsigned long int indexUC;
    bool finished;
 
    indexUC = 0;
    finished = false;
    do {
      if ( this->index->GetUCPosition(indexUC) == 0x00 ) {
        this->index->SetUCPosition(indexUC, (unsigned char)(this->index->GetUCPosition(indexUC) - 1));
        indexUC++;
      }
      else {
        this->index->SetUCPosition(indexUC, (unsigned char)(this->index->GetUCPosition(indexUC) - 1));
        finished = true;
      }
    } while ( (indexUC < this->index->GetUCLength()) && ! (finished) );
    try {
      if ( this->index->Equals(this->baseIndex) ) {
        throw "DecreaseBase0IndexModifier_6_0_0_1::GenerateNextKeyIndexed - No more key modification available !";
      }
    }
    catch (char* str) {
      throw str;
    }
    this->GetTransformedKey(key, this->index, transformedKey);
  }
 
  // Gets the transformed key based on initial key and index
  void DecreaseBase0IndexModifier_6_0_0_1::GetTransformedKey(BaseCryptoRandomStream* key, BaseCryptoRandomStream* indexModifying, BaseCryptoRandomStream* transformedKey) {
    unsigned long int i, minimumLength;
    unsigned char overflow;
    unsigned char indexValue, tmp;
    bool firstRound;
 
    i = 0;
    overflow = 0;
    firstRound = true;
    if ( indexModifying->GetUCLength() <  key->GetUCLength()) {
      minimumLength = indexModifying->GetUCLength();
    }
    else {
      minimumLength = key->GetUCLength();
    }
    key->CopyTo(transformedKey);
    do {
      if ( firstRound && (i < indexModifying->GetUCLength()) ) {
        indexValue = indexModifying->GetUCPosition(i);
      }
      else {
        indexValue = 0;
      }
      if ( this->arithmeticFunctions->SumUCIsOverflow(transformedKey->GetUCPosition(i), indexValue, overflow) ) {
        tmp = transformedKey->GetUCPosition(i);
        transformedKey->SetUCPosition(i, (unsigned char)((tmp + indexValue + overflow) & 0x00FF));
        overflow = (unsigned char) (( (unsigned short int)tmp + (unsigned short int)indexValue + (unsigned short int)overflow ) >> BYTEBITS);
        i++;
        if ( i == transformedKey->GetUCLength() ) {
          i = 0;
          firstRound = false;
        }
      }
      else {
        transformedKey->SetUCPosition(i, (unsigned char)((transformedKey->GetUCPosition(i) + indexValue + overflow) & 0x00FF));
        i++;
        overflow = 0;
      }
    } while ( (i < minimumLength) || overflow );
  }
 
  // Gets the current index corresponding to the transformed key
  BaseCryptoRandomStream* DecreaseBase0IndexModifier_6_0_0_1::GetTransformerIndex(void) {
 
    return this->index;
  }
 
  // Gets index modifier type
  IndexModifiers DecreaseBase0IndexModifier_6_0_0_1::GetIndexModifierType(void) {
 
    return this->indexModifierType;
  }
 
  // SPECIFIC MEMBERS OF THIS INDEX CLASS
 
  // Sets the index length in bits 
  // One byte is added for padding
  void DecreaseBase0IndexModifier_6_0_0_1::SetBitIndexLength(unsigned long int bitLength) {
 
    if ( ( ! this->autoIndex) && (this->index == NULL) ) {
      this->index = new DefaultCryptoRandomStream(bitLength);
      this->autoIndex = true;
    }
    this->index->FillUC(0);
    if ( ( ! this->autoBaseIndex) && (this->baseIndex == NULL) ) {
      this->baseIndex = new DefaultCryptoRandomStream(bitLength);
      this->autoBaseIndex = true;
    }
    this->baseIndex->FillUC(0);
  }
 
  // Sets the index length in unsigned chars
  // One byte is added for padding
  void DecreaseBase0IndexModifier_6_0_0_1::SetUCIndexLength(unsigned long int ucLength) {
 
    if ( ( ! this->autoIndex) && (this->index == NULL) ) {
      this->index = new DefaultCryptoRandomStream(ucLength * sizeof(unsigned char));
      this->autoIndex = true;
    }
    this->index->FillUC(0);
    if ( ( ! this->autoBaseIndex) && (this->baseIndex == NULL) ) {
      this->baseIndex = new DefaultCryptoRandomStream(ucLength * sizeof(unsigned char));
      this->autoBaseIndex = true;
    }
    this->baseIndex->FillUC(0);
  }
 
  // Sets the index length in unsigned short ints
  // One byte is added for padding
  void DecreaseBase0IndexModifier_6_0_0_1::SetUSIndexLength(unsigned long int usLength) {
 
    if ( ( ! this->autoIndex) && (this->index == NULL) ) {
      this->index = new DefaultCryptoRandomStream(usLength * sizeof(unsigned short int));
      this->autoIndex = true;
    }
    this->index->FillUS(0);
    if ( ( ! this->autoBaseIndex) && (this->baseIndex == NULL) ) {
      this->baseIndex = new DefaultCryptoRandomStream(usLength * sizeof(unsigned short int));
      this->autoBaseIndex = true;
    }
    this->baseIndex->FillUS(0);
  }
 
  // Sets the index length in unsigned long ints
  // One byte is added for padding
  void DecreaseBase0IndexModifier_6_0_0_1::SetULIndexLength(unsigned long int ulLength) {
 
    if ( ( ! this->autoIndex) && (this->index == NULL) ) {
      this->index = new DefaultCryptoRandomStream(ulLength * sizeof(unsigned long int));
      this->autoIndex = true;
    }
    this->index->FillUL(0);
    if ( ( ! this->autoBaseIndex) && (this->baseIndex == NULL) ) {
      this->baseIndex = new DefaultCryptoRandomStream(ulLength * sizeof(unsigned long int));
      this->autoBaseIndex = true;
    }
    this->baseIndex->FillUL(0);
  }
 
  // Sets the working index if externally created
  void DecreaseBase0IndexModifier_6_0_0_1::SetWorkingIndex(BaseCryptoRandomStream* indexStream) {
 
    this->index = indexStream;
    this->autoIndex = false;
  }
 
  // Gets the working index
  BaseCryptoRandomStream* DecreaseBase0IndexModifier_6_0_0_1::GetWorkingIndex(void) {
 
    return this->index;
  }
 
  // Removes the working index if externally created
  void DecreaseBase0IndexModifier_6_0_0_1::RemoveWorkingIndex(void) {
 
    this->index = NULL;
    this->autoIndex = false;
  }
 
  // Sets the working baseIndex if externally created
  void DecreaseBase0IndexModifier_6_0_0_1::SetWorkingBaseIndex(BaseCryptoRandomStream* baseIndexStream) {
 
    this->baseIndex = baseIndexStream;
    this->autoBaseIndex = false;
  }
 
  // Gets the working baseIndex
  BaseCryptoRandomStream* DecreaseBase0IndexModifier_6_0_0_1::GetWorkingBaseIndex(void) {
 
    return this->baseIndex;
  }
 
  // Removes the working baseIndex if externally created
  void DecreaseBase0IndexModifier_6_0_0_1::RemoveWorkingBaseIndex(void) {
 
    this->baseIndex = NULL;
    this->autoBaseIndex = false;
  }
 
    }
  }
  }
}