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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);


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.
int conf_req_flag
(boolean, read) Non-zero - Both confidentiality and integrity services are requested. Zero - Only integrity service is requested.
gss_qop_t qop_req
(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.
const gss_buffer_t input_message_buffer
(buffer, opaque, read) Message to be protected.
int * conf_state
(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.
gss_buffer_t output_message_buffer
(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 gss_release_buffer().


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