fileencryption.h

S60DeploymentLabEx3,有兴趣的同学可以自己研究研究

/* Copyright (c) 2003, Nokia Mobile Phones. All rights reserved */

#ifndef __FILEENCRYPTION_H__
#define __FILEENCRYPTION_H__

#include <e32base.h>

class CFileEncryption : public CBase
{
public:

/*!
  @function NewL
   
  @discussion Create a CFileEncryption object
  @result a pointer to the created instance of CFileEncryption
  */
    static CFileEncryption* NewL();

/*!
  @function NewLC
   
  @discussion Create a CFileEncryption object
  @result a pointer to the created instance of CFileEncryption
  */
    static CFileEncryption* NewLC();

/*!
  @function ~CFileEncryption
  
  @discussion Destroy the object and release all memory objects
  */
    ~CFileEncryption();

    void CreateFileL(const TDesC& aFileName, const TDesC& aFileData, const TDesC& aKey);
    HBufC* ReadFileL(const TDesC& aFileName, const TDesC& aKey);

private:

/*!
  @function CFileEncryption

  @discussion Constructs this object
  */
    CFileEncryption();

/*!
  @function ConstructL

  @discussion Performs second phase construction of this object
  */
    void ConstructL();

    HBufC* GarbleKeyLC(const TDesC& aKey);

private:
    // Member variables
    RFs     iFileSession;
};

#endif // __FILEENCRYPTION_H__