internal static extern int QueryContextAttributesW(ref SSPIHandle phContext, [In] ContextAttribute contextFlag, [Out] out ContextApplicationProtocol protocolInfo);
internal unsafe static extern int InitializeSecurityContextW(ref SSPIHandle credentialHandle, [In] void *inContextPtr, [In] string targetName, [In] ContextFlags inFlags, [In] int reservedI, [In] Endianness endianness, SecurityBufferDescriptor *inputBuffer, [In] int reservedII, [In, Out] void *newContextPtr, [In, Out] SecurityBufferDescriptor outputBuffer, [In, Out] ref ContextFlags attributes, out long timeStamp);
internal static extern int EncryptMessage(ref SSPIHandle contextHandle, [In] uint qualityOfProtection, [In, Out] SecurityBufferDescriptor inputOutput, [In] uint sequenceNumber);
internal static extern int QueryContextAttributesW(ref SSPIHandle phContext, [In] ContextAttribute contextFlag, [Out] out ContextStreamSizes sizes);
internal static unsafe extern int DecryptMessage([In] ref SSPIHandle contextHandle, [In, Out] SecurityBufferDescriptor inputOutput, [In] uint sequenceNumber, uint *qualityOfProtection);
internal unsafe static extern int AcceptSecurityContext(ref SSPIHandle credentialHandle, [In] void *inContextPtr, [In] SecurityBufferDescriptor inputBuffer, [In] ContextFlags inFlags, [In] Endianness endianness, ref SSPIHandle contextPtr, [In, Out] SecurityBufferDescriptor outputBuffer, [In, Out] ref ContextFlags attributes, out long timeStamp);
internal static extern int FreeCredentialsHandle(ref SSPIHandle handlePtr);
internal static extern int DeleteSecurityContext(ref SSPIHandle handlePtr);
internal unsafe static extern int AcquireCredentialsHandleW([In] string principal, [In] string moduleName, [In] int usage, [In] void *logonID, [In] ref SecureCredential authdata, [In] void *keyCallback, [In] void *keyArgument, ref SSPIHandle handlePtr, [Out] out long timeStamp);
