include/linux/sunrpc/gss_krb5.h

   1 /*
   2  *  linux/include/linux/sunrpc/gss_krb5_types.h
   3  *
   4  *  Adapted from MIT Kerberos 5-1.2.1 lib/include/krb5.h,
   5  *  lib/gssapi/krb5/gssapiP_krb5.h, and others
   6  *
   7  *  Copyright (c) 2000 The Regents of the University of Michigan.
   8  *  All rights reserved.
   9  *
  10  *  Andy Adamson   <andros@umich.edu>
  11  *  Bruce Fields   <bfields@umich.edu>
  12  */
  13
  14 /*
  15  * Copyright 1995 by the Massachusetts Institute of Technology.
  16  * All Rights Reserved.
  17  *
  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.
  22  *
  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.
  36  *
  37  */
  38
  39 #include <linux/sunrpc/auth_gss.h>
  40 #include <linux/sunrpc/gss_err.h>
  41 #include <linux/sunrpc/gss_asn1.h>
  42
  43 struct krb5_ctx {
  44         int                     initiate; /* 1 = initiating, 0 = accepting */
  45         int                     seed_init;
  46         unsigned char           seed[16];
  47         int                     sealalg;
  48         struct crypto_blkcipher *enc;
  49         struct crypto_blkcipher *seq;
  50         s32                     endtime;
  51         u32                     seq_send;
  52         struct xdr_netobj       mech_used;
  53 };
  54
  55 extern spinlock_t krb5_seq_lock;
  56
  57 #define KG_TOK_MIC_MSG    0x0101
  58 #define KG_TOK_WRAP_MSG   0x0201
  59
  60 enum sgn_alg {
  61         SGN_ALG_DES_MAC_MD5 = 0x0000,
  62         SGN_ALG_MD2_5 = 0x0001,
  63         SGN_ALG_DES_MAC = 0x0002,
  64         SGN_ALG_3 = 0x0003,             /* not published */
  65         SGN_ALG_HMAC_MD5 = 0x0011,      /* microsoft w2k; no support */
  66         SGN_ALG_HMAC_SHA1_DES3_KD = 0x0004
  67 };
  68 enum seal_alg {
  69         SEAL_ALG_NONE = 0xffff,
  70         SEAL_ALG_DES = 0x0000,
  71         SEAL_ALG_1 = 0x0001,            /* not published */
  72         SEAL_ALG_MICROSOFT_RC4 = 0x0010,/* microsoft w2k; no support */
  73         SEAL_ALG_DES3KD = 0x0002
  74 };
  75
  76 #define KRB5_CKSUM_LENGTH 8
  77
  78 #define CKSUMTYPE_CRC32                 0x0001
  79 #define CKSUMTYPE_RSA_MD4               0x0002
  80 #define CKSUMTYPE_RSA_MD4_DES           0x0003
  81 #define CKSUMTYPE_DESCBC                0x0004
  82 #define CKSUMTYPE_RSA_MD5               0x0007
  83 #define CKSUMTYPE_RSA_MD5_DES           0x0008
  84 #define CKSUMTYPE_NIST_SHA              0x0009
  85 #define CKSUMTYPE_HMAC_SHA1_DES3        0x000c
  86
  87 /* from gssapi_err_krb5.h */
  88 #define KG_CCACHE_NOMATCH                        (39756032L)
  89 #define KG_KEYTAB_NOMATCH                        (39756033L)
  90 #define KG_TGT_MISSING                           (39756034L)
  91 #define KG_NO_SUBKEY                             (39756035L)
  92 #define KG_CONTEXT_ESTABLISHED                   (39756036L)
  93 #define KG_BAD_SIGN_TYPE                         (39756037L)
  94 #define KG_BAD_LENGTH                            (39756038L)
  95 #define KG_CTX_INCOMPLETE                        (39756039L)
  96 #define KG_CONTEXT                               (39756040L)
  97 #define KG_CRED                                  (39756041L)
  98 #define KG_ENC_DESC                              (39756042L)
  99 #define KG_BAD_SEQ                               (39756043L)
 100 #define KG_EMPTY_CCACHE                          (39756044L)
 101 #define KG_NO_CTYPES                             (39756045L)
 102
 103 /* per Kerberos v5 protocol spec crypto types from the wire.
 104  * these get mapped to linux kernel crypto routines.
 105  */
 106 #define ENCTYPE_NULL            0x0000
 107 #define ENCTYPE_DES_CBC_CRC     0x0001  /* DES cbc mode with CRC-32 */
 108 #define ENCTYPE_DES_CBC_MD4     0x0002  /* DES cbc mode with RSA-MD4 */
 109 #define ENCTYPE_DES_CBC_MD5     0x0003  /* DES cbc mode with RSA-MD5 */
 110 #define ENCTYPE_DES_CBC_RAW     0x0004  /* DES cbc mode raw */
 111 /* XXX deprecated? */
 112 #define ENCTYPE_DES3_CBC_SHA    0x0005  /* DES-3 cbc mode with NIST-SHA */
 113 #define ENCTYPE_DES3_CBC_RAW    0x0006  /* DES-3 cbc mode raw */
 114 #define ENCTYPE_DES_HMAC_SHA1   0x0008
 115 #define ENCTYPE_DES3_CBC_SHA1   0x0010
 116 #define ENCTYPE_UNKNOWN         0x01ff
 117
 118 s32
 119 make_checksum(s32 cksumtype, char *header, int hdrlen, struct xdr_buf *body,
 120                    int body_offset, struct xdr_netobj *cksum);
 121
 122 u32 gss_get_mic_kerberos(struct gss_ctx *, struct xdr_buf *,
 123                 struct xdr_netobj *);
 124
 125 u32 gss_verify_mic_kerberos(struct gss_ctx *, struct xdr_buf *,
 126                 struct xdr_netobj *);
 127
 128 u32
 129 gss_wrap_kerberos(struct gss_ctx *ctx_id, int offset,
 130                 struct xdr_buf *outbuf, struct page **pages);
 131
 132 u32
 133 gss_unwrap_kerberos(struct gss_ctx *ctx_id, int offset,
 134                 struct xdr_buf *buf);
 135
 136
 137 u32
 138 krb5_encrypt(struct crypto_blkcipher *key,
 139              void *iv, void *in, void *out, int length);
 140
 141 u32
 142 krb5_decrypt(struct crypto_blkcipher *key,
 143              void *iv, void *in, void *out, int length);
 144
 145 int
 146 gss_encrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *outbuf,
 147                     int offset, struct page **pages);
 148
 149 int
 150 gss_decrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *inbuf,
 151                     int offset);
 152
 153 s32
 154 krb5_make_seq_num(struct crypto_blkcipher *key,
 155                 int direction,
 156                 s32 seqnum, unsigned char *cksum, unsigned char *buf);
 157
 158 s32
 159 krb5_get_seq_num(struct crypto_blkcipher *key,
 160                unsigned char *cksum,
 161                unsigned char *buf, int *direction, s32 * seqnum);