The qop_req parameter allows a choice between several cryptographic
   algorithms, if supported by the chosen mechanism.

   Parameters:

      minor_status      integer, modify
                        Implementation specific status code.

      context_handle    gss_ctx_id_t, read
                        identifies the context on which the message




 
RFC 1509            GSSAPI - Overview and C bindings      September 1993


                        will be sent

      qop_req           integer, read, optional
                        Specifies requested quality of protection.
                        Callers are encouraged, on portability grounds,
                        to accept the default quality of protection
                        offered by the chosen mechanism, which may be
                        requested by specifying GSS_C_QOP_DEFAULT for
                        this parameter.  If an unsupported protection
                        strength is requested, gss_sign will return a
                        major_status of GSS_S_FAILURE.

      message_buffer    buffer, opaque, read
                        message to be signed

      msg_token         buffer, opaque, modify
                        buffer to receive token

   Function value:

      GSS status code:

      GSS_S_COMPLETE    Successful completion

      GSS_S_CONTEXT_EXPIRED The context has already expired

      GSS_S_CREDENTIALS_EXPIRED The context is recognized, but
                        associated credentials have expired

      GSS_S_NO_CONTEXT  The context_handle parameter did not identify a
                        valid context

      GSS_S_FAILURE     Failure. See minor_status for more information.

3.9. gss_verify

      OM_uint32  gss_verify (
                     OM_uint32 *     minor_status,
                     gss_ctx_id_t    context_handle,
                     gss_buffer_t    message_buffer,
                     gss_buffer_t    token_buffer,
                     int *           qop_state)
   Purpose:

   Verifies that a cryptographic signature, contained in the token
   parameter, fits the supplied message.  The qop_state parameter allows
   a message recipient to determine the strength of protection that was
   applied to the message.




 
RFC 1509            GSSAPI - Overview and C bindings      September 1993


   Parameters:

      minor_status      integer, modify
                        Mechanism specific status code.

      context_handle    gss_ctx_id_t, read
                        identifies the context on which the message
                        arrived

      message_buffer    buffer, opaque, read
                        message to be verified

      token_buffer      buffer, opaque, read
                        token associated with message

      qop_state         integer, modify
                        quality of protection gained from signature

   Function value:

      GSS status code:

      GSS_S_COMPLETE    Successful completion

      GSS_S_DEFECTIVE_TOKEN The token failed consistency checks