| Platform SDK: Logon Authentication | 
The InitSecurityInterface function returns a pointer to a SSPI dispatch table. This function enables clients to use SSPI without binding directly to an implementation of the interface.
PSecurityFunctionTable InitSecurityInterface(VOID)
If the function succeeds, the return value is a pointer to a SecurityFunctionTable structure.
If the function fails, the return value is NULL.
The prototype for this function can be found in Sspi.h.
  Windows NT/2000: Requires Windows NT 3.51 or later.
  Windows 95/98: Requires Windows 95 or later.
  Header: Declared in Sspi.h; include Security.h.
  Library: Use Secur32.lib.
  Unicode: Implemented as Unicode and ANSI versions on Windows NT/2000.