2 * linux/include/linux/sunrpc/gss_krb5_types.h
4 * Adapted from MIT Kerberos 5-1.2.1 lib/include/krb5.h,
5 * lib/gssapi/krb5/gssapiP_krb5.h, and others
7 * Copyright (c) 2000 The Regents of the University of Michigan.
10 * Andy Adamson <andros@umich.edu>
11 * Bruce Fields <bfields@umich.edu>
15 * Copyright 1995 by the Massachusetts Institute of Technology.
16 * All Rights Reserved.
18 * Export of this software from the United States of America may
19 * require a specific license from the United States Government.
20 * It is the responsibility of any person or organization contemplating
21 * export to obtain such a license before exporting.
23 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
24 * distribute this software and its documentation for any purpose and
25 * without fee is hereby granted, provided that the above copyright
26 * notice appear in all copies and that both that copyright notice and
27 * this permission notice appear in supporting documentation, and that
28 * the name of M.I.T. not be used in advertising or publicity pertaining
29 * to distribution of the software without specific, written prior
30 * permission. Furthermore if you modify this software you must label
31 * your software as modified software and not distribute it in such a
32 * fashion that it might be confused with the original M.I.T. software.
33 * M.I.T. makes no representations about the suitability of
34 * this software for any purpose. It is provided "as is" without express
35 * or implied warranty.
39 #include <linux/sunrpc/auth_gss.h>
40 #include <linux/sunrpc/gss_err.h>
41 #include <linux/sunrpc/gss_asn1.h>
43 /* Maximum checksum function output for the supported crypto algorithms */
44 #define GSS_KRB5_MAX_CKSUM_LEN (20)
46 /* Maximum blocksize for the supported crypto algorithms */
47 #define GSS_KRB5_MAX_BLOCKSIZE (16)
50 int initiate; /* 1 = initiating, 0 = accepting */
52 struct crypto_blkcipher *enc;
53 struct crypto_blkcipher *seq;
56 struct xdr_netobj mech_used;
59 extern spinlock_t krb5_seq_lock;
61 /* The length of the Kerberos GSS token header */
62 #define GSS_KRB5_TOK_HDR_LEN (16)
64 #define KG_TOK_MIC_MSG 0x0101
65 #define KG_TOK_WRAP_MSG 0x0201
68 SGN_ALG_DES_MAC_MD5 = 0x0000,
69 SGN_ALG_MD2_5 = 0x0001,
70 SGN_ALG_DES_MAC = 0x0002,
71 SGN_ALG_3 = 0x0003, /* not published */
72 SGN_ALG_HMAC_MD5 = 0x0011, /* microsoft w2k; no support */
73 SGN_ALG_HMAC_SHA1_DES3_KD = 0x0004
76 SEAL_ALG_NONE = 0xffff,
77 SEAL_ALG_DES = 0x0000,
78 SEAL_ALG_1 = 0x0001, /* not published */
79 SEAL_ALG_MICROSOFT_RC4 = 0x0010,/* microsoft w2k; no support */
80 SEAL_ALG_DES3KD = 0x0002
83 #define CKSUMTYPE_CRC32 0x0001
84 #define CKSUMTYPE_RSA_MD4 0x0002
85 #define CKSUMTYPE_RSA_MD4_DES 0x0003
86 #define CKSUMTYPE_DESCBC 0x0004
87 #define CKSUMTYPE_RSA_MD5 0x0007
88 #define CKSUMTYPE_RSA_MD5_DES 0x0008
89 #define CKSUMTYPE_NIST_SHA 0x0009
90 #define CKSUMTYPE_HMAC_SHA1_DES3 0x000c
92 /* from gssapi_err_krb5.h */
93 #define KG_CCACHE_NOMATCH (39756032L)
94 #define KG_KEYTAB_NOMATCH (39756033L)
95 #define KG_TGT_MISSING (39756034L)
96 #define KG_NO_SUBKEY (39756035L)
97 #define KG_CONTEXT_ESTABLISHED (39756036L)
98 #define KG_BAD_SIGN_TYPE (39756037L)
99 #define KG_BAD_LENGTH (39756038L)
100 #define KG_CTX_INCOMPLETE (39756039L)
101 #define KG_CONTEXT (39756040L)
102 #define KG_CRED (39756041L)
103 #define KG_ENC_DESC (39756042L)
104 #define KG_BAD_SEQ (39756043L)
105 #define KG_EMPTY_CCACHE (39756044L)
106 #define KG_NO_CTYPES (39756045L)
108 /* per Kerberos v5 protocol spec crypto types from the wire.
109 * these get mapped to linux kernel crypto routines.
111 #define ENCTYPE_NULL 0x0000
112 #define ENCTYPE_DES_CBC_CRC 0x0001 /* DES cbc mode with CRC-32 */
113 #define ENCTYPE_DES_CBC_MD4 0x0002 /* DES cbc mode with RSA-MD4 */
114 #define ENCTYPE_DES_CBC_MD5 0x0003 /* DES cbc mode with RSA-MD5 */
115 #define ENCTYPE_DES_CBC_RAW 0x0004 /* DES cbc mode raw */
116 /* XXX deprecated? */
117 #define ENCTYPE_DES3_CBC_SHA 0x0005 /* DES-3 cbc mode with NIST-SHA */
118 #define ENCTYPE_DES3_CBC_RAW 0x0006 /* DES-3 cbc mode raw */
119 #define ENCTYPE_DES_HMAC_SHA1 0x0008
120 #define ENCTYPE_DES3_CBC_SHA1 0x0010
121 #define ENCTYPE_UNKNOWN 0x01ff
124 * This compile-time check verifies that we will not exceed the
125 * slack space allotted by the client and server auth_gss code
126 * before they call gss_wrap().
128 #define GSS_KRB5_MAX_SLACK_NEEDED \
129 (GSS_KRB5_TOK_HDR_LEN /* gss token header */ \
130 + GSS_KRB5_MAX_CKSUM_LEN /* gss token checksum */ \
131 + GSS_KRB5_MAX_BLOCKSIZE /* confounder */ \
132 + GSS_KRB5_MAX_BLOCKSIZE /* possible padding */ \
133 + GSS_KRB5_TOK_HDR_LEN /* encrypted hdr in v2 token */\
134 + GSS_KRB5_MAX_CKSUM_LEN /* encryption hmac */ \
135 + 4 + 4 /* RPC verifier */ \
136 + GSS_KRB5_TOK_HDR_LEN \
137 + GSS_KRB5_MAX_CKSUM_LEN)
140 make_checksum(char *, char *header, int hdrlen, struct xdr_buf *body,
141 int body_offset, struct xdr_netobj *cksum);
143 u32 gss_get_mic_kerberos(struct gss_ctx *, struct xdr_buf *,
144 struct xdr_netobj *);
146 u32 gss_verify_mic_kerberos(struct gss_ctx *, struct xdr_buf *,
147 struct xdr_netobj *);
150 gss_wrap_kerberos(struct gss_ctx *ctx_id, int offset,
151 struct xdr_buf *outbuf, struct page **pages);
154 gss_unwrap_kerberos(struct gss_ctx *ctx_id, int offset,
155 struct xdr_buf *buf);
159 krb5_encrypt(struct crypto_blkcipher *key,
160 void *iv, void *in, void *out, int length);
163 krb5_decrypt(struct crypto_blkcipher *key,
164 void *iv, void *in, void *out, int length);
167 gss_encrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *outbuf,
168 int offset, struct page **pages);
171 gss_decrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *inbuf,
175 krb5_make_seq_num(struct crypto_blkcipher *key,
177 u32 seqnum, unsigned char *cksum, unsigned char *buf);
180 krb5_get_seq_num(struct crypto_blkcipher *key,
181 unsigned char *cksum,
182 unsigned char *buf, int *direction, u32 *seqnum);
185 xdr_extend_head(struct xdr_buf *buf, unsigned int base, unsigned int shiftlen);