xref: /freebsd/crypto/heimdal/lib/gssapi/mech/gss_wrap.c (revision a90b9d0159070121c221b966469c3e36d912bf82)
1 /*-
2  * Copyright (c) 2005 Doug Rabson
3  * All rights reserved.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 1. Redistributions of source code must retain the above copyright
9  *    notice, this list of conditions and the following disclaimer.
10  * 2. Redistributions in binary form must reproduce the above copyright
11  *    notice, this list of conditions and the following disclaimer in the
12  *    documentation and/or other materials provided with the distribution.
13  *
14  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
15  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
18  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24  * SUCH DAMAGE.
25  *
26  *	$FreeBSD: src/lib/libgssapi/gss_wrap.c,v 1.1 2005/12/29 14:40:20 dfr Exp $
27  */
28 
29 #include "mech_locl.h"
30 
31 /**
32  * Wrap a message using either confidentiality (encryption +
33  * signature) or sealing (signature).
34  *
35  * @param minor_status minor status code.
36  * @param context_handle context handle.
37  * @param conf_req_flag if non zero, confidentiality is requestd.
38  * @param qop_req type of protection needed, in most cases it GSS_C_QOP_DEFAULT should be passed in.
39  * @param input_message_buffer messages to wrap
40  * @param conf_state returns non zero if confidentiality was honoured.
41  * @param output_message_buffer the resulting buffer, release with gss_release_buffer().
42  *
43  * @ingroup gssapi
44  */
45 
46 GSSAPI_LIB_FUNCTION OM_uint32 GSSAPI_LIB_CALL
47 gss_wrap(OM_uint32 *minor_status,
48     const gss_ctx_id_t context_handle,
49     int conf_req_flag,
50     gss_qop_t qop_req,
51     const gss_buffer_t input_message_buffer,
52     int *conf_state,
53     gss_buffer_t output_message_buffer)
54 {
55 	struct _gss_context *ctx = (struct _gss_context *) context_handle;
56 	gssapi_mech_interface m;
57 
58 	if (conf_state)
59 	    *conf_state = 0;
60 	_mg_buffer_zero(output_message_buffer);
61 	if (ctx == NULL) {
62 	    *minor_status = 0;
63 	    return GSS_S_NO_CONTEXT;
64 	}
65 
66 	m = ctx->gc_mech;
67 
68 	return (m->gm_wrap(minor_status, ctx->gc_ctx,
69 		    conf_req_flag, qop_req, input_message_buffer,
70 		    conf_state, output_message_buffer));
71 }
72