Tuesday, 17 October 2017

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DicelockSecurity (version 9.X)

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arrow DiceLock-x 9.0.0.1 arrow baseSha32.cpp
baseSha32.cpp (base Sha 1 & 256 secure hash digest algorithm C++ source code file) Print E-mail
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//
// Creator:    http://www.dicelocksecurity.com
// Version:    vers.9.0.0.1
//
// Copyright (C) 2009-2013 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 <memory.h>
#include "baseSha32.h"
 
 
namespace DiceLockSecurity {
  
  namespace Hash {
 
  // Number of data bits to compute hash
  const unsigned short int BaseSha32::hashBlockBits = BASESHA_32_BLOCKBITS;
  // Number of data unsigned chars to compute hash
  const unsigned short int BaseSha32::hashBlockUCs = BASESHA_32_BLOCKUCHARS;
  // Number of data unsigned long shorts to compute hash
  const unsigned short int BaseSha32::hashBlockUSs = BASESHA_32_BLOCKUSHORTS;
  // Number of data unsigned long ints to compute hash
  const unsigned short int BaseSha32::hashBlockULs = BASESHA_32_BLOCKULONGS;
 
  // Equation modulo constant value
  const unsigned short int BaseSha32::equationModulo = BASESHA_32_EQUATIONMODULO;
 
  // Adds messaage length processed, if it is greater than unsigned long makes use
  // of another usigned long to store overflow
  void BaseSha32::AddMessageLength(unsigned long int byteLength) {
 
    if ((this->messageBitLengthLow + (byteLength * BYTEBITS)) < this->messageBitLengthLow) 
      // add overflow of unsigned long
      this->messageBitLengthHigh++;
    this->messageBitLengthLow += (byteLength  * BYTEBITS);
  }
 
  // Swap bytes for little endian
  void BaseSha32::SwapLittleEndian(void) {
    unsigned long int swap, i;
 
    for ( i = 0; i < this->messageDigest->GetULLength(); i++ ) {
      swap = this->messageDigest->GetULPosition(i);
      this->messageDigest->SetUCPosition( (i * 4), (unsigned char)(swap >> 24) & 0xFF);
      this->messageDigest->SetUCPosition( (i * 4) + 1, (unsigned char)(swap >> 16) & 0xFF);
      this->messageDigest->SetUCPosition( (i * 4) + 2, (unsigned char)(swap >> 8) & 0xFF);
      this->messageDigest->SetUCPosition( (i * 4) + 3, (unsigned char)(swap & 0xFF));
    }
 
  }
 
  // Constructor, default 
  BaseSha32::BaseSha32() {
 
    this->remainingBytesLength = 0;
    this->messageBitLengthHigh = 0;
    this->messageBitLengthLow = 0;
  }
 
  // Destructor
  BaseSha32::~BaseSha32() {
 
    this->remainingBytesLength = 0;
    this->messageBitLengthHigh = 0;
    this->messageBitLengthLow = 0;
  }
 
  // Adds the BaseCryptoRandomStream to the hash
  void BaseSha32::Add(BaseCryptoRandomStream* stream) {
    unsigned long int startStreamByte = 0, processBytes = 0;
    long int numBytes = 0;
 
    // If bytes left from previous added stream, then they will be processed now with added data from new stream
    if (this->remainingBytesLength) {
      if ((this->remainingBytesLength + stream->GetUCLength()) > ((unsigned long int)this->GetUCHashBlockLength() - 1)) {
        // Setting the point to start the current stream processed
        startStreamByte = this->GetUCHashBlockLength() - this->remainingBytesLength;
        processBytes = stream->GetUCLength() - (this->GetUCHashBlockLength() - this->remainingBytesLength);
 
        memcpy(this->remainingBytes + this->remainingBytesLength, stream->GetUCAddressPosition(0), this->GetUCHashBlockLength() - this->remainingBytesLength);
        // Process remaining bytes of previous streams adn 64 byte padding of current stream
        this->Compress(this->messageDigest, this->remainingBytes);
        // Updating message byt length processed
        this->AddMessageLength(this->GetUCHashBlockLength());
        // Remaining bytes of previous strema set to 0
        this->remainingBytesLength = 0;
      }
      else {
        processBytes = stream->GetUCLength();
      }
    }
    else {
      processBytes = stream->GetUCLength();
      startStreamByte = 0;
    }
 
    for (numBytes = 0; processBytes > ((unsigned long int)this->GetUCHashBlockLength() - 1); numBytes += this->GetUCHashBlockLength()) {
      // Process the chunk
      this->Compress(this->messageDigest, stream->GetUCAddressPosition(startStreamByte + numBytes));
      // Updating message byt length processed
      this->AddMessageLength(this->GetUCHashBlockLength()); 
      processBytes -= this->GetUCHashBlockLength();
    }
 
    // If remaining bytes left, they will be copied for the next added stream
    if (processBytes > 0) {
      memcpy(this->remainingBytes + this->remainingBytesLength, stream->GetUCAddressPosition(stream->GetUCLength() - processBytes), processBytes);
      this->remainingBytesLength += processBytes;
    }
  }
 
  // Finalize the hash
  void BaseSha32::Finalize(void) {
 
    this->remainingBytes[this->remainingBytesLength] = 0x80;
    if ((this->remainingBytesLength * BYTEBITS) % this->hashBlockBits >= this->equationModulo) {
      memset(this->remainingBytes + this->remainingBytesLength + 1, 0, this->GetUCHashBlockLength() - this->remainingBytesLength -1);
      this->Compress(this->messageDigest, this->remainingBytes);
      this->AddMessageLength(this->remainingBytesLength);
      memset(this->remainingBytes, 0, this->GetUCHashBlockLength());
      this->remainingBytesLength = 0;
    }
    else {
      memset(this->remainingBytes + this->remainingBytesLength + 1, 0, this->GetUCHashBlockLength() - this->remainingBytesLength -1);
    }
    this->AddMessageLength(this->remainingBytesLength); 
    this->remainingBytes[56] = (this->messageBitLengthHigh >> 24) & 255;
    this->remainingBytes[57] = (this->messageBitLengthHigh >> 16) & 255;
    this->remainingBytes[58] = (this->messageBitLengthHigh >> 8) & 255;
    this->remainingBytes[59] = (this->messageBitLengthHigh) & 255;
    this->remainingBytes[60] = (this->messageBitLengthLow >> 24) & 255;
    this->remainingBytes[61] = (this->messageBitLengthLow >> 16) & 255;
    this->remainingBytes[62] = (this->messageBitLengthLow >> 8) & 255;
    this->remainingBytes[63] = (this->messageBitLengthLow) & 255;
    this->Compress(this->messageDigest, this->remainingBytes);
  }
 
  // Gets the number of bits in the hash block to be hashed
  unsigned short int BaseSha32::GetBitHashBlockLength(void) {
 
    return this->hashBlockBits;
  }
 
  // Gets the number of unsigned chars in the hash block to be hashed
  unsigned short int BaseSha32::GetUCHashBlockLength(void) {
 
    return this->hashBlockUCs;
  }
 
  // Gets the number of unsigned short ints in the hash block to be hashed
  unsigned short int BaseSha32::GetUSHashBlockLength(void) {
 
    return this->hashBlockUSs;
  }
 
  // Gets the number of unsigned long ints in the hash block to be hashed
  unsigned short int BaseSha32::GetULHashBlockLength(void) {
 
    return this->hashBlockULs;
  }
 
  }
}