gss_verify_micgss_verify
- Check a MIC against a message; verify integrity of a received message
SYNOPSIS
#include <gssapi/gssapi.h> OM_uint32
Fo gss_verify_mic
Fa OM_uint32 *minor_status
Fa const gss_ctx_id_t context_handle
Fa const gss_buffer_t message_buffer
Fa const gss_buffer_t token_buffer
Fa gss_qop_t *qop_state
Fc Ft OM_uint32
Fo gss_verify
Fa OM_uint32 *minor_status
Fa gss_ctx_id_t context_handle
Fa gss_buffer_t message_buffer
Fa gss_buffer_t token_buffer
Fa gss_qop_t *qop_state
Fc
DESCRIPTION
Verifies that a cryptographic MIC,
contained in the token parameter,
fits the supplied message.
The
Fa qop_state
parameter allows a message recipient to determine the strength of
protection that was applied to the message.
Since some application-level protocols may wish to use tokens emitted
by
gss_wrap ();
to provide "secure framing",
implementations must support the calculation and verification of MICs
over zero-length messages.
The
gss_verify ();
routine is an obsolete variant of
gss_verify_mic (.);
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 arrived.
message_buffer
Message to be verified.
token_buffer
Token associated with message.
qop_state
Quality of protection gained from MIC.
Specify
NULL
if not required.
RETURN VALUES
GSS_S_COMPLETE
Successful completion
GSS_S_DEFECTIVE_TOKEN
The token failed consistency checks
GSS_S_BAD_SIG
The MIC was incorrect
GSS_S_DUPLICATE_TOKEN
The token was valid,
and contained a correct MIC for the message,
but it had already been processed
GSS_S_OLD_TOKEN
The token was valid,
and contained a correct MIC for the message,
but it is too old to check for duplication
GSS_S_UNSEQ_TOKEN
The token was valid,
and contained a correct MIC for the message,
but has been verified out of sequence;
a later token has already been received.
GSS_S_GAP_TOKEN
The token was valid,
and contained a correct MIC for the message,
but has been verified out of sequence;
an earlier expected token has not yet been received
GSS_S_CONTEXT_EXPIRED
The context has already expired
GSS_S_NO_CONTEXT
The context_handle parameter did not identify a valid context
SEE ALSO
gss_wrap3
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
manual page example first appeared in
Fx 7.0 .
AUTHORS
John Wray, Iris Associates
COPYRIGHT
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