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//
// Creator:    http://www.dicelocksecurity.com
// Version:    vers.3.0.0.1
//
// Copyright © 2009-2010 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.
 
#ifndef SHA224_HPP
 
#define SHA224_HPP
 
#ifdef DICELOCKCIPHER_EXPORTS
   #define CLASS_DECLSPEC    __declspec(dllexport)
#else
   #define CLASS_DECLSPEC    __declspec(dllimport)
#endif
 
#include <stdlib.h>
#include <intrin.h>
#include "sha256.h"
#include "defaultCryptoRandomStream.h"
 
 
#define SHA224_DIGESTBITS    224  // 224 hash bits
#define SHA224_DIGESTUCHARS  28   // 28  hash unsigned chars
#define SHA224_DIGESTUSHORTS 14   // 14  hash unsigned short ints
#define SHA224_DIGESTULONGS  7    // 7   hash unsigned long ints
 
 
namespace DiceLockSecurity {
 
  namespace Hash {
 
  class Sha224 : public Sha256 {
 
    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;
 
      // Initial hash values of SHA256 
      static const unsigned long int initials[SHA256_DIGESTULONGS];
 
      // Pointer to DefaultCryptoRandomStream digest for SHA 256 hash algorithm
      DefaultCryptoRandomStream* workingDigest256; 
      
      // Boolean pointing if meesaageDigest for SHA 256 has been created automatically
      bool autoWorkingDigest;
      
    public:
 
      // Constructor, default 
      CLASS_DECLSPEC Sha224();
 
      // Destructor
      CLASS_DECLSPEC ~Sha224();
 
      // Set the Working Digest  BaseCryptoRandomStream for underlaying SHA256 algorithm
      CLASS_DECLSPEC void SetWorkingDigest(BaseCryptoRandomStream*);
 
      // Set the Working Digest  BaseCryptoRandomStream for underlaying SHA256 algorithm
      CLASS_DECLSPEC unsigned short int GetWorkingDigestUCLength(void);
 
      // Initializes common states of Sha1 algorithm
      CLASS_DECLSPEC void Initialize(void);
 
      // Adds the BaseCryptoRandomStream to the hash
      CLASS_DECLSPEC void Add(BaseCryptoRandomStream*);
 
      // Finalize the hash
      CLASS_DECLSPEC void Finalize(void);
 
      // Gets hash length in bits
      CLASS_DECLSPEC unsigned short int GetBitHashLength(void);
 
      // Gets hash length in unsigned chars
      CLASS_DECLSPEC unsigned short int GetUCHashLength(void);
 
      // Gets hash length in unsigned short ints
      CLASS_DECLSPEC unsigned short int GetUSHashLength(void);
 
      // Gets hash length in unsigned long ints
      CLASS_DECLSPEC unsigned short int GetULHashLength(void);
 
      // Gets the type of the object
      CLASS_DECLSPEC Hashes GetType(void);
  };
  }
}
 
#endif