xref: /openbmc/linux/include/linux/sunrpc/gss_krb5.h (revision 6e460c23)
1 /*
2  *  Adapted from MIT Kerberos 5-1.2.1 lib/include/krb5.h,
3  *  lib/gssapi/krb5/gssapiP_krb5.h, and others
4  *
5  *  Copyright (c) 2000-2008 The Regents of the University of Michigan.
6  *  All rights reserved.
7  *
8  *  Andy Adamson   <andros@umich.edu>
9  *  Bruce Fields   <bfields@umich.edu>
10  */
11 
12 /*
13  * Copyright 1995 by the Massachusetts Institute of Technology.
14  * All Rights Reserved.
15  *
16  * Export of this software from the United States of America may
17  *   require a specific license from the United States Government.
18  *   It is the responsibility of any person or organization contemplating
19  *   export to obtain such a license before exporting.
20  *
21  * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
22  * distribute this software and its documentation for any purpose and
23  * without fee is hereby granted, provided that the above copyright
24  * notice appear in all copies and that both that copyright notice and
25  * this permission notice appear in supporting documentation, and that
26  * the name of M.I.T. not be used in advertising or publicity pertaining
27  * to distribution of the software without specific, written prior
28  * permission.  Furthermore if you modify this software you must label
29  * your software as modified software and not distribute it in such a
30  * fashion that it might be confused with the original M.I.T. software.
31  * M.I.T. makes no representations about the suitability of
32  * this software for any purpose.  It is provided "as is" without express
33  * or implied warranty.
34  *
35  */
36 
37 #ifndef _LINUX_SUNRPC_GSS_KRB5_H
38 #define _LINUX_SUNRPC_GSS_KRB5_H
39 
40 #include <crypto/skcipher.h>
41 #include <linux/sunrpc/auth_gss.h>
42 #include <linux/sunrpc/gss_err.h>
43 #include <linux/sunrpc/gss_asn1.h>
44 
45 /* Length of constant used in key derivation */
46 #define GSS_KRB5_K5CLENGTH (5)
47 
48 /* Maximum key length (in bytes) for the supported crypto algorithms */
49 #define GSS_KRB5_MAX_KEYLEN (32)
50 
51 /* Maximum checksum function output for the supported enctypes */
52 #define GSS_KRB5_MAX_CKSUM_LEN  (24)
53 
54 /* Maximum blocksize for the supported crypto algorithms */
55 #define GSS_KRB5_MAX_BLOCKSIZE  (16)
56 
57 /* The length of the Kerberos GSS token header */
58 #define GSS_KRB5_TOK_HDR_LEN	(16)
59 
60 #define KG_TOK_MIC_MSG    0x0101
61 #define KG_TOK_WRAP_MSG   0x0201
62 
63 #define KG2_TOK_INITIAL     0x0101
64 #define KG2_TOK_RESPONSE    0x0202
65 #define KG2_TOK_MIC         0x0404
66 #define KG2_TOK_WRAP        0x0504
67 
68 #define KG2_TOKEN_FLAG_SENTBYACCEPTOR   0x01
69 #define KG2_TOKEN_FLAG_SEALED           0x02
70 #define KG2_TOKEN_FLAG_ACCEPTORSUBKEY   0x04
71 
72 #define KG2_RESP_FLAG_ERROR             0x0001
73 #define KG2_RESP_FLAG_DELEG_OK          0x0002
74 
75 enum sgn_alg {
76 	SGN_ALG_DES_MAC_MD5 = 0x0000,
77 	SGN_ALG_MD2_5 = 0x0001,
78 	SGN_ALG_DES_MAC = 0x0002,
79 	SGN_ALG_3 = 0x0003,		/* not published */
80 	SGN_ALG_HMAC_SHA1_DES3_KD = 0x0004
81 };
82 enum seal_alg {
83 	SEAL_ALG_NONE = 0xffff,
84 	SEAL_ALG_DES = 0x0000,
85 	SEAL_ALG_1 = 0x0001,		/* not published */
86 	SEAL_ALG_DES3KD = 0x0002
87 };
88 
89 /*
90  * These values are assigned by IANA and published via the
91  * subregistry at the link below:
92  *
93  * https://www.iana.org/assignments/kerberos-parameters/kerberos-parameters.xhtml#kerberos-parameters-2
94  */
95 #define CKSUMTYPE_CRC32			0x0001
96 #define CKSUMTYPE_RSA_MD4		0x0002
97 #define CKSUMTYPE_RSA_MD4_DES		0x0003
98 #define CKSUMTYPE_DESCBC		0x0004
99 #define CKSUMTYPE_RSA_MD5		0x0007
100 #define CKSUMTYPE_RSA_MD5_DES		0x0008
101 #define CKSUMTYPE_NIST_SHA		0x0009
102 #define CKSUMTYPE_HMAC_SHA1_DES3	0x000c
103 #define CKSUMTYPE_HMAC_SHA1_96_AES128   0x000f
104 #define CKSUMTYPE_HMAC_SHA1_96_AES256   0x0010
105 #define CKSUMTYPE_CMAC_CAMELLIA128	0x0011
106 #define CKSUMTYPE_CMAC_CAMELLIA256	0x0012
107 #define CKSUMTYPE_HMAC_SHA256_128_AES128	0x0013
108 #define CKSUMTYPE_HMAC_SHA384_192_AES256	0x0014
109 #define CKSUMTYPE_HMAC_MD5_ARCFOUR      -138 /* Microsoft md5 hmac cksumtype */
110 
111 /* from gssapi_err_krb5.h */
112 #define KG_CCACHE_NOMATCH                        (39756032L)
113 #define KG_KEYTAB_NOMATCH                        (39756033L)
114 #define KG_TGT_MISSING                           (39756034L)
115 #define KG_NO_SUBKEY                             (39756035L)
116 #define KG_CONTEXT_ESTABLISHED                   (39756036L)
117 #define KG_BAD_SIGN_TYPE                         (39756037L)
118 #define KG_BAD_LENGTH                            (39756038L)
119 #define KG_CTX_INCOMPLETE                        (39756039L)
120 #define KG_CONTEXT                               (39756040L)
121 #define KG_CRED                                  (39756041L)
122 #define KG_ENC_DESC                              (39756042L)
123 #define KG_BAD_SEQ                               (39756043L)
124 #define KG_EMPTY_CCACHE                          (39756044L)
125 #define KG_NO_CTYPES                             (39756045L)
126 
127 /* per Kerberos v5 protocol spec crypto types from the wire.
128  * these get mapped to linux kernel crypto routines.
129  *
130  * These values are assigned by IANA and published via the
131  * subregistry at the link below:
132  *
133  * https://www.iana.org/assignments/kerberos-parameters/kerberos-parameters.xhtml#kerberos-parameters-1
134  */
135 #define ENCTYPE_NULL            0x0000
136 #define ENCTYPE_DES_CBC_CRC     0x0001	/* DES cbc mode with CRC-32 */
137 #define ENCTYPE_DES_CBC_MD4     0x0002	/* DES cbc mode with RSA-MD4 */
138 #define ENCTYPE_DES_CBC_MD5     0x0003	/* DES cbc mode with RSA-MD5 */
139 #define ENCTYPE_DES_CBC_RAW     0x0004	/* DES cbc mode raw */
140 /* XXX deprecated? */
141 #define ENCTYPE_DES3_CBC_SHA    0x0005	/* DES-3 cbc mode with NIST-SHA */
142 #define ENCTYPE_DES3_CBC_RAW    0x0006	/* DES-3 cbc mode raw */
143 #define ENCTYPE_DES_HMAC_SHA1   0x0008
144 #define ENCTYPE_DES3_CBC_SHA1   0x0010
145 #define ENCTYPE_AES128_CTS_HMAC_SHA1_96 0x0011
146 #define ENCTYPE_AES256_CTS_HMAC_SHA1_96 0x0012
147 #define ENCTYPE_AES128_CTS_HMAC_SHA256_128	0x0013
148 #define ENCTYPE_AES256_CTS_HMAC_SHA384_192	0x0014
149 #define ENCTYPE_ARCFOUR_HMAC            0x0017
150 #define ENCTYPE_ARCFOUR_HMAC_EXP        0x0018
151 #define ENCTYPE_CAMELLIA128_CTS_CMAC	0x0019
152 #define ENCTYPE_CAMELLIA256_CTS_CMAC	0x001A
153 #define ENCTYPE_UNKNOWN         0x01ff
154 
155 /*
156  * Constants used for key derivation
157  */
158 /* for 3DES */
159 #define KG_USAGE_SEAL (22)
160 #define KG_USAGE_SIGN (23)
161 #define KG_USAGE_SEQ  (24)
162 
163 /* from rfc3961 */
164 #define KEY_USAGE_SEED_CHECKSUM         (0x99)
165 #define KEY_USAGE_SEED_ENCRYPTION       (0xAA)
166 #define KEY_USAGE_SEED_INTEGRITY        (0x55)
167 
168 /* from rfc4121 */
169 #define KG_USAGE_ACCEPTOR_SEAL  (22)
170 #define KG_USAGE_ACCEPTOR_SIGN  (23)
171 #define KG_USAGE_INITIATOR_SEAL (24)
172 #define KG_USAGE_INITIATOR_SIGN (25)
173 
174 #endif /* _LINUX_SUNRPC_GSS_KRB5_H */
175