2 * Copyright (c) 2010, JANET(UK)
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions
9 * 1. Redistributions of source code must retain the above copyright
10 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * 3. Neither the name of JANET(UK) nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
18 * without specific prior written permission.
20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
21 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
22 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
24 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
25 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
26 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
27 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
28 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
29 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
33 #include "gssapiP_eap.h"
36 * 1.3.6.1.4.1.5322(padl)
39 * eap-aes128-cts-hmac-sha1-96(17)
40 * eap-aes256-cts-hmac-sha1-96(18)
43 * inquireSecContextByOid(1)
45 * setSecContextOption(3)
50 static const gss_OID_desc gssEapMechPrefix = {
51 /* Note that alone this is not a valid DER encoded OID */
52 11, "\x06\x0A\x2B\x06\x01\x04\x01\xA9\x4A\x15\x01\x00"
55 static const gss_OID_desc gssEapConcreteMechs[] = {
56 /* 1.3.6.1.4.1.5322.21.1 */
57 { 11, "\x06\x0A\x2B\x06\x01\x04\x01\xA9\x4A\x15\x01" },
58 /* 1.3.6.1.4.1.5322.21.1.17 */
59 { 12, "\x06\x0A\x2B\x06\x01\x04\x01\xA9\x4A\x15\x01\x11" },
60 /* 1.3.6.1.4.1.5322.21.1.18 */
61 { 12, "\x06\x0A\x2B\x06\x01\x04\x01\xA9\x4A\x15\x01\x12" }
64 const gss_OID_desc *const GSS_EAP_MECHANISM =
65 &gssEapConcreteMechs[0];
66 const gss_OID_desc *const GSS_EAP_AES128_CTS_HMAC_SHA1_96_MECHANISM =
67 &gssEapConcreteMechs[1];
68 const gss_OID_desc *const GSS_EAP_AES256_CTS_HMAC_SHA1_96_MECHANISM =
69 &gssEapConcreteMechs[2];
72 gssEapIsMechanismOid(const gss_OID oid)
74 if (oidEqual(oid, GSS_EAP_MECHANISM)) {
76 } else if (oid->length > gssEapMechPrefix.length &&
77 memcmp(oid->elements, gssEapMechPrefix.elements,
78 gssEapMechPrefix.length) == 0) {
86 gssEapOidToEnctype(OM_uint32 *minor,
88 krb5_enctype *enctype)
93 major = decomposeOid(minor,
94 gssEapMechPrefix.elements,
95 gssEapMechPrefix.length,
98 if (major == GSS_S_COMPLETE)
105 gssEapEnctypeToOid(OM_uint32 *minor,
106 krb5_enctype enctype,
114 oid = (gss_OID)GSSEAP_MALLOC(sizeof(*oid));
117 return GSS_S_FAILURE;
120 oid->elements = GSSEAP_MALLOC(gssEapMechPrefix.length + 1);
121 if (oid->elements == NULL) {
124 return GSS_S_FAILURE;
127 major = composeOid(minor,
128 gssEapMechPrefix.elements,
129 gssEapMechPrefix.length,
132 if (major == GSS_S_COMPLETE) {
133 gssEapInternalizeOid(oid, pOid);
144 gssEapIndicateMechs(OM_uint32 *minor,
147 krb5_context krbContext;
148 OM_uint32 major, tmpMinor;
149 krb5_enctype *etypes;
152 GSSEAP_KRB_INIT(&krbContext);
154 *minor = krb5_get_permitted_enctypes(krbContext, &etypes);
156 return GSS_S_FAILURE;
159 major = gss_create_empty_oid_set(minor, mechs);
160 if (GSS_ERROR(major)) {
161 GSSEAP_FREE(etypes); /* XXX */
165 for (i = 0; etypes[i] != ENCTYPE_NULL; i++) {
168 /* XXX currently we aren't equipped to encode these enctypes */
169 if (etypes[i] < 0 || etypes[i] > 127)
172 major = gssEapEnctypeToOid(minor, etypes[i], &mechOid);
173 if (GSS_ERROR(major))
176 major = gss_add_oid_set_member(minor, mechOid, mechs);
177 if (GSS_ERROR(major))
180 gss_release_oid(&tmpMinor, &mechOid);
183 GSSEAP_FREE(etypes); /* XXX */
189 gssEapDefaultMech(OM_uint32 *minor,
193 OM_uint32 major, tmpMinor;
195 major = gssEapIndicateMechs(minor, &mechs);
196 if (GSS_ERROR(major)) {
200 if (mechs->count == 0) {
201 gss_release_oid_set(&tmpMinor, &mechs);
202 return GSS_S_BAD_MECH;
205 gssEapInternalizeOid(&mechs->elements[0], oid);
206 if (*oid == &mechs->elements[0]) {
207 /* don't double-free if we didn't internalize it */
208 mechs->elements[0].length = 0;
209 mechs->elements[0].elements = NULL;
212 gss_release_oid_set(&tmpMinor, &mechs);
215 return GSS_S_COMPLETE;
219 gssEapInternalizeOid(const gss_OID oid,
220 gss_OID *const pInternalizedOid)
224 *pInternalizedOid = GSS_C_NO_OID;
227 i < sizeof(gssEapConcreteMechs) / sizeof(gssEapConcreteMechs[0]);
229 if (oidEqual(oid, &gssEapConcreteMechs[i])) {
230 *pInternalizedOid = (const gss_OID)&gssEapConcreteMechs[i];
235 if (*pInternalizedOid == GSS_C_NO_OID) {
236 if (oidEqual(oid, GSS_EAP_NT_PRINCIPAL_NAME))
237 *pInternalizedOid = (const gss_OID)GSS_EAP_NT_PRINCIPAL_NAME;
240 if (*pInternalizedOid == GSS_C_NO_OID) {
241 *pInternalizedOid = oid;