Scroll to navigation

gss_wrap(3) gss gss_wrap(3)


gss_wrap - API function


#include <gss.h>

OM_uint32 gss_wrap(OM_uint32 * minor_status, const gss_ctx_id_t context_handle, int conf_req_flag, gss_qop_t qop_req, const gss_buffer_t input_message_buffer, int * conf_state, gss_buffer_t output_message_buffer);


(Integer, modify) Mechanism specific status code.
(gss_ctx_id_t, read) Identifies the context on
which the message will be sent.
(boolean, read) Non-zero - Both confidentiality and
integrity services are requested. Zero - Only integrity service is
(gss_qop_t, read, optional) Specifies required quality of
protection. A mechanism-specific default may be requested by
setting qop_req to GSS_C_QOP_DEFAULT. If an unsupported
protection strength is requested, gss_wrap will return a
major_status of GSS_S_BAD_QOP.
(buffer, opaque, read) Message to be
(boolean, modify, optional) Non-zero -
Confidentiality, data origin authentication and integrity
services have been applied. Zero - Integrity and data origin
services only has been applied. Specify NULL if not required.
(buffer, opaque, modify) Buffer to receive
protected message. Storage associated with this message must be
freed by the application after use with a call to


Attaches a cryptographic MIC and optionally encrypts the specified input_message. The output_message contains both the MIC and the message. 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 the wrapping of zero-length messages.


`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.


Report bugs to <>. GNU Generic Security Service home page: General help using GNU software:


Copyright © 2003-2013 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.


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.

1.0.3 gss