Thursday, 23 November 2017

DiceLockSecurity Knowledge

DicelockSecurity (version 9.X)

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md5.h (Message Digest 5 hash digest algorithm C++ header source code file) Print E-mail
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//
//  md5.h
//  XDiceLockCipher
//
//  Created by svp on 11/5/12.
//  Copyright (c) 2012 __MyCompanyName__. All rights reserved.
//
 
//
// Creator:    http://www.dicelocksecurity.com
// Version:    vers.8.0.0.1
//
// Copyright (C) 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.
// 
 
#ifndef XDiceLockCipher_md5_h
#define XDiceLockCipher_md5_h
 
#include "baseHash.h"
 
 
#define  MD5_STATES       4   // State (ABCD)
#define  MD5_NBITS        2   // Number of bits, modulo 2^64 (lsb first)
#define  MD5_BUFLENGTH   64   // Input buffer
 
// Number of hash bits
#define  MD5_DIGESTBITS    128
// Number of hash unsigned chars
#define  MD5_DIGESTUCHARS  16
// Number of hash unsigned short ints
#define  MD5_DIGESTUSHORTS  8
// Number of hash unsigned ints
#define  MD5_DIGESTULONGS  4
 
 
namespace DiceLockSecurity {
    
    namespace Hash {
        
        
        class Md5 : public BaseHash {
            
    private:
            
      // Hash Algorithms Class enumerator name
      static const Hashes  hashName;
            
      // Number of hash bits
      static const unsigned short int hashBits;
      // Number of hash unsigned chars
      static const unsigned short int hashUCs;
      // Number of hash unsigned short ints
      static const unsigned short int hashUSs;
      // Number of hash unsigned ints
      static const unsigned short int hashULs;
      // Number of hash unsigned 64 bits
      static const unsigned short int hash64s;
            
        unsigned int state[MD5_STATES];
      unsigned int count[MD5_NBITS];
      unsigned char buffer[MD5_BUFLENGTH];
            
    protected:
            
      //  Encodes input (unsigned int) into output (BaseCryptoRandomStream). Assumes length is a multiple of 4.
      void Encode(BaseCryptoRandomStream*, unsigned int*);
      //  Encodes input (unsigned int) into output (unsigned char). Assumes length is a multiple of 4.
      void Encode(unsigned char*, unsigned int*, unsigned int);
      //  Decodes input (unsigned char) into output (unsigned int). Assumes length is a multiple of 4.
      void Decode(unsigned int*, unsigned char*, unsigned int);
      // MD5 basic transformation. Transforms state based on block.
      void Md5Transform(unsigned char*);
            
      // F, G, H and I are basic MD5 functions.
      unsigned int F(unsigned int, unsigned int, unsigned int);
      unsigned int G(unsigned int, unsigned int, unsigned int);
      unsigned int H(unsigned int, unsigned int, unsigned int);
      unsigned int I(unsigned int, unsigned int, unsigned int);
            
      // RotateLeft rotates x left n bits.
      unsigned int RotateLeft(unsigned int, unsigned int);
            
      //  FF, GG, HH, and II transformations for rounds 1, 2, 3, and 4.
      // Rotation is separate from addition to prevent recomputation.
      void FF (unsigned int*, unsigned int, unsigned int, unsigned int,
                     unsigned int, unsigned int, unsigned int);
      void GG (unsigned int*, unsigned int, unsigned int, unsigned int,
                     unsigned int, unsigned int, unsigned int);
      void HH (unsigned int*, unsigned int, unsigned int, unsigned int,
                     unsigned int, unsigned int, unsigned int);
      void II (unsigned int*, unsigned int, unsigned int, unsigned int,
                     unsigned int, unsigned int, unsigned int);
            
      //  MD5 block update operation. Continues an MD5 message-digest
      //  operation, processing another unsigned char message block, 
      //  and updating the context.
      void Add(unsigned char*, unsigned int);
            
    public:
            
      // Constructor, default 
      Md5();
            
      // Destructor
      ~Md5();
            
      // Initializes common states of Md5 algorithm
      void Initialize(void);
            
      // Adds the BaseCryptoRandomStream stream to the hash
      void Add(BaseCryptoRandomStream*);
            
      // Finalize the hash
      void Finalize(void);
            
      // Gets hash length in bits
      unsigned short int GetBitHashLength(void);
            
      // Gets hash length in unsigned chars
      unsigned short int GetUCHashLength(void);
            
      // Gets hash length in unsigned short ints
      unsigned short int GetUSHashLength(void);
            
      // Gets hash length in unsigned ints
      unsigned short int GetULHashLength(void);
            
      // Gets hash length in unsigned 64 bits
      unsigned short int Get64HashLength(void);
            
      // Gets the type of the object
      Hashes GetType(void);
        };
    }
}
 
#endif