# RPC_C_AUTHN_xxx

These values, along with the RPC_C_AUTHZ_xxx values, are assigned to the SOLE_AUTHENICATION_SERVICE structure, which is retrieved by the CoQueryAuthenticationServices function, and passed in to the CoInitializeSecurity function.

Note Only RPC_C_AUTHN_WINNT is supported in NT 4.0. The others may be supported with software purchased from other companies.

Values

RPC_C_AUTHN_NONE
  No authentication.
RPC_C_AUTHN_DCE_PRIVATE
  DCE private key authentication.
RPC_C_AUTHN_DCE_PUBLIC
  DCE public key authentication.
RPC_C_AUTHN_DEC_PUBLIC
  DEC public key authentication (reserved for future use).
RPC_C_AUTHN_WINNT
  NT LM SSP (NT Security Service).
RPC_C_AUTHN_DEFAULT
  The system default authentication service. Windows NT 4.0 defaults to DCE private key authentication (RPC_C_AUTHN_DCE_PRIVATE).

See Also

CoInitializeSecurity, CoQueryAuthenticationServices