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GSS_WRAP(3) FreeBSD Library Functions Manual (prm) GSS_WRAP(3)
NAME
gss_wrap, gss_seal - Attach a cryptographic MIC and optionally encrypt a
message
SYNOPSIS
#include <gssapi/gssapi.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
gss_seal(OM_uint32 *minor_status, gss_ctx_id_t context_handle,
int conf_req_flag, gss_qop_t qop_req,
gss_buffer_t input_message_buffer, int *conf_state,
gss_buffer_t output_message_buffer);
DESCRIPTION
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.
The gss_seal() routine is an obsolete variant of gss_wrap(). It is
provided for backwards compatibility with applications using the GSS-API
V1 interface. A distinct entrypoint (as opposed to #define) is provided,
both to allow GSS-API V1 applications to link and to retain the slight
parameter type differences between the obsolete versions of this routine
and its current form.
PARAMETERS
minor_status Mechanism specific status code.
context_handle Identifies the context on which the message will
be sent.
conf_req_flag
Non-zero Both confidentiality and integrity
services are requested.
Zero Only integrity service is requested.
qop_req 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.
input_message_buffer Message to be protected.
conf_state
associated with this buffer must be freed by the
application after use with a call to
gss_release_buffer(3).
RETURN VALUES
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.
SEE ALSO
gss_release_buffer(3), gss_unwrap(3)
STANDARDS
RFC 2743 Generic Security Service Application Program Interface Version
2, Update 1
RFC 2744 Generic Security Service API Version 2 : C-bindings
HISTORY
The gss_wrap function first appeared in FreeBSD 7.0.
AUTHORS
John Wray, Iris Associates
COPYRIGHT
Copyright (C) The Internet Society (2000). All Rights Reserved.
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FreeBSD 14.0-RELEASE-p11 January 26, 2010 FreeBSD 14.0-RELEASE-p11