1 /*-
2 * SPDX-License-Identifier: BSD-3-Clause
3 *
4 * Copyright (c) 2007 Kungliga Tekniska Högskolan
5 * (Royal Institute of Technology, Stockholm, Sweden).
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 *
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 *
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * 3. Neither the name of the Institute nor the names of its contributors
20 * may be used to endorse or promote products derived from this software
21 * without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
24 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
25 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
26 * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
27 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
28 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
29 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
30 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
31 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
32 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 * SUCH DAMAGE.
34 */
35 /* $Id: gss_pseudo_random.c 20053 2007-01-24 01:31:35Z lha $ */
36
37 #include <gssapi/gssapi.h>
38
39 #include "mech_switch.h"
40 #include "context.h"
41 #include "utils.h"
42
43 OM_uint32
gss_pseudo_random(OM_uint32 * minor_status,gss_ctx_id_t context,int prf_key,const gss_buffer_t prf_in,ssize_t desired_output_len,gss_buffer_t prf_out)44 gss_pseudo_random(OM_uint32 *minor_status,
45 gss_ctx_id_t context,
46 int prf_key,
47 const gss_buffer_t prf_in,
48 ssize_t desired_output_len,
49 gss_buffer_t prf_out)
50 {
51 struct _gss_context *ctx = (struct _gss_context *) context;
52 struct _gss_mech_switch *m;
53 OM_uint32 major_status;
54
55 _gss_buffer_zero(prf_out);
56 *minor_status = 0;
57
58 if (ctx == NULL) {
59 *minor_status = 0;
60 return GSS_S_NO_CONTEXT;
61 }
62 m = ctx->gc_mech;
63
64 if (m->gm_pseudo_random == NULL)
65 return GSS_S_UNAVAILABLE;
66
67 major_status = (*m->gm_pseudo_random)(minor_status, ctx->gc_ctx,
68 prf_key, prf_in, desired_output_len,
69 prf_out);
70 if (major_status != GSS_S_COMPLETE)
71 _gss_mg_error(m, major_status, *minor_status);
72
73 return major_status;
74 }
75