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+.\" -*- nroff -*-
+.\"
+.\" Copyright (c) 2005 Doug Rabson
+.\" All rights reserved.
+.\"
+.\" Redistribution and use in source and binary forms, with or without
+.\" modification, are permitted provided that the following conditions
+.\" are met:
+.\" 1. Redistributions of source code must retain the above copyright
+.\"    notice, this list of conditions and the following disclaimer.
+.\" 2. Redistributions in binary form must reproduce the above copyright
+.\"    notice, this list of conditions and the following disclaimer in the
+.\"    documentation and/or other materials provided with the distribution.
+.\"
+.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+.\" ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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+.\" OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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+.\" LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+.\" OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+.\" SUCH DAMAGE.
+.\"
+.\"	$FreeBSD$
+.\"
+.\" Copyright (C) The Internet Society (2000).  All Rights Reserved.
+.\"
+.\" This document and translations of it may be copied and furnished to
+.\" others, and derivative works that comment on or otherwise explain it
+.\" or assist in its implementation may be prepared, copied, published
+.\" and distributed, in whole or in part, without restriction of any
+.\" kind, provided that the above copyright notice and this paragraph are
+.\" included on all such copies and derivative works.  However, this
+.\" document itself may not be modified in any way, such as by removing
+.\" the copyright notice or references to the Internet Society or other
+.\" Internet organizations, except as needed for the purpose of
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+.\" copyrights defined in the Internet Standards process must be
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+.\"
+.\" The limited permissions granted above are perpetual and will not be
+.\" revoked by the Internet Society or its successors or assigns.
+.\"
+.\" This document and the information contained herein is provided on an
+.\" "AS IS" basis and THE INTERNET SOCIETY AND THE INTERNET ENGINEERING
+.\" TASK FORCE DISCLAIMS ALL WARRANTIES, EXPRESS OR IMPLIED, INCLUDING
+.\" BUT NOT LIMITED TO ANY WARRANTY THAT THE USE OF THE INFORMATION
+.\" HEREIN WILL NOT INFRINGE ANY RIGHTS OR ANY IMPLIED WARRANTIES OF
+.\" MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
+.\"
+.\" The following commands are required for all man pages.
+.Dd November 12, 2005
+.Os
+.Dt GSS_VERIFY_MIC 3 PRM
+.Sh NAME
+.Nm gss_verify_mic ,
+.Nm gss_verify
+.Nd Check a MIC against a message; verify integrity of a received message
+.\" This next command is for sections 2 and 3 only.
+.\" .Sh LIBRARY
+.Sh SYNOPSIS
+.In "gssapi/gssapi.h"
+.Ft 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
+.Sh 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.
+.Pp
+Since some application-level protocols may wish to use tokens emitted
+by
+.Fn gss_wrap
+to provide "secure framing",
+implementations must support the calculation and verification of MICs
+over zero-length messages.
+.Pp
+The
+.Fn gss_verify
+routine is an obsolete variant of
+.Fn 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.
+.Sh PARAMETERS
+.Bl -tag
+.It minor_status
+Mechanism specific status code.
+.It context_handle
+Identifies the context on which the message arrived.
+.It message_buffer
+Message to be verified.
+.It token_buffer
+Token associated with message.
+.It qop_state
+Quality of protection gained from MIC.
+Specify
+.Dv NULL
+if not required.
+.El
+.Sh RETURN VALUES
+.Bl -tag
+.It GSS_S_COMPLETE
+Successful completion
+.It GSS_S_DEFECTIVE_TOKEN
+The token failed consistency checks
+.It GSS_S_BAD_SIG
+The MIC was incorrect
+.It GSS_S_DUPLICATE_TOKEN
+The token was valid,
+and contained a correct MIC for the message,
+but it had already been processed
+.It 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
+.It 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.
+.It 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
+.It GSS_S_CONTEXT_EXPIRED
+The context has already expired
+.It GSS_S_NO_CONTEXT
+The context_handle parameter did not identify a valid context
+.El
+.Sh SEE ALSO
+.Xr gss_wrap 3
+.Sh STANDARDS
+.Bl -tag
+.It RFC 2743
+Generic Security Service Application Program Interface Version 2, Update 1
+.It RFC 2744
+Generic Security Service API Version 2 : C-bindings
+.\" .Sh HISTORY
+.El
+.Sh HISTORY
+The
+.Nm
+manual page example first appeared in
+.Fx 7.0 .
+.Sh AUTHORS
+John Wray, Iris Associates