linux-sgx-trts-modified/psw/ae/aesm_service/source/aesm/extension/aesm_epid_blob.h

/*
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#ifndef _AESM_EPID_BLOB_H_
#define _AESM_EPID_BLOB_H_
/*File to declare class for EPIDBlob*/
#include "se_types.h"
#include "sgx_tseal.h"
#include "oal/oal.h"
#include "AEClass.h"
#include "epid_pve_type.h"
#include "assert.h"
#include "aeerror.h"
#include "se_thread.h"
#include "provision_msg.h"
#include "internal/se_rwlock.h"

typedef struct _epid_blob_with_cur_psvn_t{
    uint8_t trusted_epid_blob[SGX_TRUSTED_EPID_BLOB_SIZE_PAK];
    bk_platform_info_t   cur_pi;
}epid_blob_with_cur_psvn_t;


#define SGX_EPID_BLOB_SIZE sizeof(epid_blob_with_cur_psvn_t)

class EPIDBlob: public Singleton<EPIDBlob>{
    CLASS_UNCOPYABLE(EPIDBlob)
    epid_blob_with_cur_psvn_t blob_cache;
    friend class Singleton<EPIDBlob>;
    enum EPIDBlobStatus {not_initialized=0, update_to_date=1, not_available=2} status;
    EPIDBlob(){memset(&blob_cache, 0 ,sizeof(blob_cache));status = not_initialized;}
public:
    ae_error_t read(epid_blob_with_cur_psvn_t& blob);
    ae_error_t write(const epid_blob_with_cur_psvn_t& blob);
    ae_error_t get_sgx_gid(uint32_t* pgid);/*get little endian gid from epid data blob*/
    ae_error_t get_extended_epid_group_id(uint32_t* pxeid);//get little endian extended_epid_group_id from epid data blob
    ae_error_t remove(void);
};
#endif/*_AESM_EPID_BLOB_H_*/