public unsafe static extern int EncryptMessage( [In] ref CtxtHandle phContext, [Out] void *pfQOP, [In, Out] ref SecBufferDesc pMessage, [In] uint MessageSeqNo);
public static extern int DecryptMessage( [In] ref CtxtHandle phContext, [In, Out] ref SecBufferDesc pMessage, [In] uint MessageSeqNo, [Out] out uint pfQOP);
public static extern int VerifySignature( [In] ref CtxtHandle phContext, [In] ref SecBufferDesc pMessage, [In] int MessageSeqNo, [Out] out int pfQOP);
public static extern int MakeSignature( [In] ref CtxtHandle phContext, [In] int fQOP, [In, Out] ref SecBufferDesc pMessage, [In] int MessageSeqNo);
public static unsafe extern int DecryptMessage([In] ref CtxtHandle phContext, [In] [Out] ref SecBufferDesc pMessage, [In] uint MessageSeqNo, [Out] void* pfQOP);
public static unsafe extern int AcceptSecurityContext([In] ref CredHandle phCredential, [In] [Out] void* phContext, [In] ref SecBufferDesc pInput, [In] int fContextReq, [In] int TargetDataRep, [In] [Out] ref CtxtHandle phNewContext, [In] [Out] ref SecBufferDesc pOutput, out int pfContextAttr, out long ptsTimeStamp);