Authentication-Service Constants

The AuthnSvc argument represents the authentication service supplied to the RpcBindingInqAuthInfo and RpcBindingSetAuthInfo run-time functions.

The following constants represent valid values for the AuthnSvc argument:

Constant	Value	Service
RPC_C_AUTHN_DCE_PRIVATE	1	DCE private key authentication
RPC_C_AUTHN_DCE_PUBLIC	2	DCE public key authentication (reserved for future use)
RPC_C_AUTHN_DEC_PUBLIC	4	DEC public key authentication (reserved for future use)
RPC_C_AUTHN_DEFAULT	0xffffffff	Default authentication service
RPC_C_AUTHN_NONE	0	No authentication
RPC_C_AUTHN_WINNT	10	NTLMSSP (NT LAN Manager Security Support Provider)

Specify RPC_C_AUTHN_NONE to turn off authentication for remote procedure calls made using the binding handle.

When you specify RPC_C_AUTHN_DEFAULT, the RPC run-time library uses the RPC_C_AUTHN_DCE_PRIVATE authentication service for remote procedure calls made using the binding handle.