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#ifndef _PREPARE_HASH_SHA256_H_
#define _PREPARE_HASH_SHA256_H_

#include "pse_pr_inc.h"
#include "pse_pr_types.h"
#include "ae_ipp.h"

#include "sgx_tcrypto.h"


class PrepareHashSHA256
{
public:
    PrepareHashSHA256();
    ~PrepareHashSHA256(void);

    // Include pData in the computed HMAC
    ae_error_t Update(const void* pData, size_t numBytes);

	// pHMAC will contain the computed HMAC if successful
	ae_error_t Finalize(SHA256_HASH *pHash);

private:
    sgx_status_t m_sgx_status;

    sgx_sha_state_handle_t m_pShaState;

	// Disable class operations (default constructor, copy constructor, assignment operator, and address-of operator)
	//PrepareHashSHA256();										// default constructor
	PrepareHashSHA256(const PrepareHashSHA256& rhs);			// copy constructor
	PrepareHashSHA256& operator=(const PrepareHashSHA256& rhs); // assignment operator
	PrepareHashSHA256* operator&();							    // address-of operator
	const PrepareHashSHA256* operator&() const;				    // address-of operator

};

#endif
