DsCrackSpnA

function DsCrackSpnA(

  pszSpn: LPCSTR;

  pcServiceClass: LPDWORD;

  ServiceClass: LPSTR;

  pcServiceName: LPDWORD;

  ServiceName: LPSTR;

  pcInstanceName: LPDWORD;

  InstanceName: LPSTR;

  pInstancePort: PUSHORT

):DWORD;