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arrow DiceLock-x 9.0.0.1 arrow sha512_256.h
sha512_256.h (Sha 256 based on Sha 512 secure hash digest algorithm C++ header 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
//
 
#ifndef SHA512_256_HPP
 
#define SHA512_256_HPP
 
#include "sha512.h"
#include "defaultCryptoRandomStream.h"
 
 
#define SHA512_256_DIGESTBITS    256  // 256 hash bits
#define SHA512_256_DIGESTUCHARS    32   // 32  hash unsigned chars
#define SHA512_256_DIGESTUSHORTS  16   // 16  hash unsigned short ints
#define SHA512_256_DIGESTULONGS    8    // 8   hash unsigned long ints
#define SHA512_256_DIGESTULG64S    4    // 4   hash unsigned 64 bits
 
#define SHA512_256_INITIALS       8
 
 
namespace DiceLockSecurity {
 
  namespace Hash {
 
 
  class Sha512_256 : public Sha512 {
 
    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 long ints
      static const unsigned short int    hashULs;
      // Number of hash unsigned 64 bits
      static const unsigned short int    hash64s;
 
      // Initial hash values of SHA512
      static const unsigned long long int initials[SHA512_256_INITIALS];
 
      // Pointer to BaseCryptoRandomStream digest for SHA 384 hash algorithm
      BaseCryptoRandomStream*         workingDigest512;
 
      // Boolean pointing if meesaageDigest for SHA 512 has been created automatically
      bool                  autoWorkingDigest;
 
    public:
 
      // Constructor, default
      Sha512_256();
 
      // Destructor
      ~Sha512_256();
 
      // Set the Working Digest  BaseCryptoRandomStream for underlying SHA512 algorithm
      void SetWorkingDigest(BaseCryptoRandomStream* workDigest);
 
      // Get the Working Digest  BaseCryptoRandomStream for underlying SHA512 algorithm length in bits
      unsigned short int GetWorkingDigestBitLength(void);
 
      // Get the Working Digest  BaseCryptoRandomStream for underlying SHA512 algorithm length in unsigned chars
      unsigned short int GetWorkingDigestUCLength(void);
 
      // Get the Working Digest  BaseCryptoRandomStream for underlying SHA512 algorithm length in unsigned short ints
      unsigned short int GetWorkingDigestUSLength(void);
 
      // Get the Working Digest  BaseCryptoRandomStream for underlying SHA512 algorithm length in unsigned long ints
      unsigned short int GetWorkingDigestULLength(void);
 
      // Initializes common states of Sha1 algorithm
      void Initialize(void);
 
      // Adds the BaseCryptoRandomStream to the hash
      void Add(BaseCryptoRandomStream* stream);
 
      // 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 long 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