Protection API - SDP_GetHardwareID

SDP_GetHardwareID

The SDP_GetHardwareID - use this function to pass the unique computer identifier. Result of this function is used to generate keys, limited to particular computer

  For C++:

        LPSTR __declspec(dllexport)  SDP_GetHardwareID();
  For Delphi:
       function  SDP_GetHardwareID: PChar;stdcall;
       exports   SDP_GetHardwareID;

Parameters

lpdwNum

This function has no parameters.

Return Values

Points to the buffer that holds hardware ID

Remarks

If size of the string passed to SDProtector is bigger than 32, only the first 32 characters will be used to identify particular computer.

Example

for C/C++

    // It is a sample code of SDP_GetHardwareID, it only get the volume id of the 
    // harddisk 'c:', we recommend you to write your own.

extern "C" LPSTR __declspec(dllexport)  SDP_GetHardwareID()
{
   
   static char szVolumeSerial[36];
   DWORD dVolSerialNum;
   
   GetVolumeInformation("c:\\",NULL,12,&dVolSerialNum,NULL,NULL,NULL,0);
   sprintf(szVolumeSerial,"%x%d",dVolSerialNum,dVolSerialNum);
   
   return (LPSTR)szVolumeSerial;

}

for Delphi

    // It is a sample code of SDP_GetHardwareID, it only get the volume id of the 
    // harddisk 'c:', we recommend you to write your own.
 var 
      szVolumeSerial:array[0..35]of char;

 function  SDP_GetHardwareID: PChar;stdcall;
    var
      dummy:DWORD;
      dVolSerialNum : Longword;
      Serial : String;
     
    begin
      dummy:=0;
      GetVolumeInformation('c:\', nil, 0,@dVolSerialNum, dummy, dummy, nil, 0);
      Serial:=format('%x%d',[dVolSerialNum,dVolSerialNum]);
      FillChar(szVolumeSerial,36,0);
      CopyMemory(@szVolumeSerial[0], @Serial[1],Length(Serial));
      Result := @szVolumeSerial[0];
    end;
 exports SDP_GetHardwareID;