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         struct crypto_blkcipher *enc;
  46         struct crypto_blkcipher *seq;
  47         s32                     endtime;
  48         u32                     seq_send;
  49         struct xdr_netobj       mech_used;
  50 };
  51
  52 extern spinlock_t krb5_seq_lock;
  53
  54 /* The length of the Kerberos GSS token header */
  55 #define GSS_KRB5_TOK_HDR_LEN    (16)
  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 CKSUMTYPE_CRC32                 0x0001
  77 #define CKSUMTYPE_RSA_MD4               0x0002
  78 #define CKSUMTYPE_RSA_MD4_DES           0x0003
  79 #define CKSUMTYPE_DESCBC                0x0004
  80 #define CKSUMTYPE_RSA_MD5               0x0007
  81 #define CKSUMTYPE_RSA_MD5_DES           0x0008
  82 #define CKSUMTYPE_NIST_SHA              0x0009
  83 #define CKSUMTYPE_HMAC_SHA1_DES3        0x000c
  84
  85 /* from gssapi_err_krb5.h */
  86 #define KG_CCACHE_NOMATCH                        (39756032L)
  87 #define KG_KEYTAB_NOMATCH                        (39756033L)
  88 #define KG_TGT_MISSING                           (39756034L)
  89 #define KG_NO_SUBKEY                             (39756035L)
  90 #define KG_CONTEXT_ESTABLISHED                   (39756036L)
  91 #define KG_BAD_SIGN_TYPE                         (39756037L)
  92 #define KG_BAD_LENGTH                            (39756038L)
  93 #define KG_CTX_INCOMPLETE                        (39756039L)
  94 #define KG_CONTEXT                               (39756040L)
  95 #define KG_CRED                                  (39756041L)
  96 #define KG_ENC_DESC                              (39756042L)
  97 #define KG_BAD_SEQ                               (39756043L)
  98 #define KG_EMPTY_CCACHE                          (39756044L)
  99 #define KG_NO_CTYPES                             (39756045L)
 100
 101 /* per Kerberos v5 protocol spec crypto types from the wire.
 102  * these get mapped to linux kernel crypto routines.
 103  */
 104 #define ENCTYPE_NULL            0x0000
 105 #define ENCTYPE_DES_CBC_CRC     0x0001  /* DES cbc mode with CRC-32 */
 106 #define ENCTYPE_DES_CBC_MD4     0x0002  /* DES cbc mode with RSA-MD4 */
 107 #define ENCTYPE_DES_CBC_MD5     0x0003  /* DES cbc mode with RSA-MD5 */
 108 #define ENCTYPE_DES_CBC_RAW     0x0004  /* DES cbc mode raw */
 109 /* XXX deprecated? */
 110 #define ENCTYPE_DES3_CBC_SHA    0x0005  /* DES-3 cbc mode with NIST-SHA */
 111 #define ENCTYPE_DES3_CBC_RAW    0x0006  /* DES-3 cbc mode raw */
 112 #define ENCTYPE_DES_HMAC_SHA1   0x0008
 113 #define ENCTYPE_DES3_CBC_SHA1   0x0010
 114 #define ENCTYPE_UNKNOWN         0x01ff
 115
 116 s32
 117 make_checksum(char *, char *header, int hdrlen, struct xdr_buf *body,
 118                    int body_offset, struct xdr_netobj *cksum);
 119
 120 u32 gss_get_mic_kerberos(struct gss_ctx *, struct xdr_buf *,
 121                 struct xdr_netobj *);
 122
 123 u32 gss_verify_mic_kerberos(struct gss_ctx *, struct xdr_buf *,
 124                 struct xdr_netobj *);
 125
 126 u32
 127 gss_wrap_kerberos(struct gss_ctx *ctx_id, int offset,
 128                 struct xdr_buf *outbuf, struct page **pages);
 129
 130 u32
 131 gss_unwrap_kerberos(struct gss_ctx *ctx_id, int offset,
 132                 struct xdr_buf *buf);
 133
 134
 135 u32
 136 krb5_encrypt(struct crypto_blkcipher *key,
 137              void *iv, void *in, void *out, int length);
 138
 139 u32
 140 krb5_decrypt(struct crypto_blkcipher *key,
 141              void *iv, void *in, void *out, int length);
 142
 143 int
 144 gss_encrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *outbuf,
 145                     int offset, struct page **pages);
 146
 147 int
 148 gss_decrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *inbuf,
 149                     int offset);
 150
 151 s32
 152 krb5_make_seq_num(struct crypto_blkcipher *key,
 153                 int direction,
 154                 u32 seqnum, unsigned char *cksum, unsigned char *buf);
 155
 156 s32
 157 krb5_get_seq_num(struct crypto_blkcipher *key,
 158                unsigned char *cksum,
 159                unsigned char *buf, int *direction, u32 *seqnum);