UtlCryptoKeySym.h

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//  
// Copyright (C) 2008 SIPfoundry Inc. 
// Licensed by SIPfoundry under the LGPL license. 
//  
// Copyright (C) 2008 SIPez LLC. 
// Licensed to SIPfoundry under a Contributor Agreement. 
//  
// Copyright (C) 2008 Mutualink, Inc. 
// Licensed to SIPfoundry under a Contributor Agreement. 
//  
// $$ 

// Author: Sergey Kostanbaev <Sergey DOT Kostanbaev AT sipez DOT com>

#ifndef _UtlCryptoKeySym_h_
#define _UtlCryptoKeySym_h_

// SYSTEM INCLUDES
// APPLICATION INCLUDES
#include "utl/UtlCryptoKey.h"

// DEFINES
// MACROS
// EXTERNAL FUNCTIONS
// EXTERNAL VARIABLES
// STRUCTS
// TYPEDEFS
// FORWARD DECLARATIONS

class UtlCryptoKeySym : public UtlCryptoKey
{
/* //////////////////////////////// PUBLIC //////////////////////////////// */
public:

/* =============================== CREATORS =============================== */


   UtlCryptoKeySym();

   ~UtlCryptoKeySym();


/* ============================= MANIPULATORS ============================= */


   int generateKey();
   int loadBinaryKey(const unsigned char* pSrc, int srcLen);
   UtlCryptoData* getBinaryKey() const;

   int getMaxEncryptedSize(int srcLen) const;
   
   int encrypt(const unsigned char* pSrc,
               int srcLen,
               unsigned char* pDest,
               int* pDestLen) const;

   int getMaxDecryptedSize(int srcLen) const;

   int decrypt(const unsigned char* pSrc,
               int srcLen,
               unsigned char* pDest,
               int* pDestLen) const;


/* ============================== ACCESSORS =============================== */



/* =============================== INQUIRY ================================ */


   int getTotalKeyLength();

   UtlBoolean getBinaryKey(char* buffer, int bufferLength);

   UtlString output() const;



/* ////////////////////////////// PROTECTED /////////////////////////////// */
protected:


/* /////////////////////////////// PRIVATE //////////////////////////////// */
private:

   void clearKey();

   const EVP_CIPHER* const mpCipher;
   const int mKeyLen;
   const int mIvLen;
   UtlCryptoData* mpKey;
   UtlCryptoData* mpIv;
};


/* ============================ INLINE METHODS ============================ */



#endif  // _UtlCryptoKeyRsa_h_