NAME

       gss_get_mic - API function

SYNOPSIS

       #include <gss.h>

       OM_uint32  gss_get_mic(OM_uint32  *  minor_status,  const gss_ctx_id_t context_handle, gss_qop_t qop_req,
       const gss_buffer_t message_buffer, gss_buffer_t message_token);

ARGUMENTS

       OM_uint32 * minor_status
                   (Integer, modify) Mechanism specific status code.

       const gss_ctx_id_t context_handle
                   (gss_ctx_id_t, read) Identifies the context on
                     which the message will be sent.

       gss_qop_t qop_req
                   (gss_qop_t, 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_get_mic will return a major_status of
                     GSS_S_BAD_QOP.

       const gss_buffer_t message_buffer
                   (buffer, opaque, read) Message to be protected.

       gss_buffer_t message_token
                   (buffer, opaque, modify) Buffer to receive token.  The
                     application must free storage associated with this buffer after
                     use with a call to gss_release_buffer().

DESCRIPTION

       Generates a cryptographic MIC for the supplied message, and places the MIC in a token for transfer to the
       peer application. The qop_req parameter allows a choice  between  several  cryptographic  algorithms,  if
       supported by the chosen mechanism.

       Since  some  application-level  protocols may wish to use tokens emitted by gss_wrap() to provide "secure
       framing", implementations must support derivation of MICs from zero-length messages.

RETURN VALUE

       `GSS_S_COMPLETE`: Successful completion.

       `GSS_S_CONTEXT_EXPIRED`: The context has already expired.

       `GSS_S_NO_CONTEXT`: The context_handle parameter did not identify a valid context.

       `GSS_S_BAD_QOP`: The specified QOP is not supported by the mechanism.

REPORTING BUGS

       Report    bugs    to    <bug-gss@gnu.org>.     GNU    Generic     Security     Service     home     page:
       http://www.gnu.org/software/gss/ General help using GNU software: http://www.gnu.org/gethelp/

COPYRIGHT

       Copyright © 2003-2022 Simon Josefsson.
       Copying  and distribution of this file, with or without modification, are permitted in any medium without
       royalty provided the copyright notice and this notice are preserved.

SEE ALSO

       The full documentation for gss is maintained as a Texinfo manual.  If  the  info  and  gss  programs  are
       properly installed at your site, the command

              info gss

       should give you access to the complete manual.

gss                                                   1.0.4                                       gss_get_mic(3)