include/linux/sunrpc/gss_spkm3.h

   1 /*
   2  *  linux/include/linux/sunrpc/gss_spkm3.h
   3  *
   4  *  Copyright (c) 2000 The Regents of the University of Michigan.
   5  *  All rights reserved.
   6  *
   7  *  Andy Adamson   <andros@umich.edu>
   8  */
   9
  10 #include <linux/sunrpc/auth_gss.h>
  11 #include <linux/sunrpc/gss_err.h>
  12 #include <linux/sunrpc/gss_asn1.h>
  13
  14 struct spkm3_ctx {
  15         struct xdr_netobj       ctx_id;  /* per message context id */
  16         int                     endtime; /* endtime of the context */
  17         struct xdr_netobj       mech_used;
  18         unsigned int            ret_flags ;
  19         struct xdr_netobj       conf_alg;
  20         struct xdr_netobj       derived_conf_key;
  21         struct xdr_netobj       intg_alg;
  22         struct xdr_netobj       derived_integ_key;
  23 };
  24
  25 /* OIDs declarations for K-ALG, I-ALG, C-ALG, and OWF-ALG */
  26 extern const struct xdr_netobj hmac_md5_oid;
  27 extern const struct xdr_netobj cast5_cbc_oid;
  28
  29 /* SPKM InnerContext Token types */
  30
  31 #define SPKM_ERROR_TOK  3
  32 #define SPKM_MIC_TOK    4
  33 #define SPKM_WRAP_TOK   5
  34 #define SPKM_DEL_TOK    6
  35
  36 u32 spkm3_make_token(struct spkm3_ctx *ctx, struct xdr_buf * text, struct xdr_netobj * token, int toktype);
  37
  38 u32 spkm3_read_token(struct spkm3_ctx *ctx, struct xdr_netobj *read_token, struct xdr_buf *message_buffer, int toktype);
  39
  40 #define CKSUMTYPE_RSA_MD5            0x0007
  41 #define CKSUMTYPE_HMAC_MD5           0x0008
  42
  43 s32 make_spkm3_checksum(s32 cksumtype, struct xdr_netobj *key, char *header,
  44                 unsigned int hdrlen, struct xdr_buf *body,
  45                 unsigned int body_offset, struct xdr_netobj *cksum);
  46 void asn1_bitstring_len(struct xdr_netobj *in, int *enclen, int *zerobits);
  47 int decode_asn1_bitstring(struct xdr_netobj *out, char *in, int enclen,
  48                    int explen);
  49 void spkm3_mic_header(unsigned char **hdrbuf, unsigned int *hdrlen,
  50                    unsigned char *ctxhdr, int elen, int zbit);
  51 void spkm3_make_mic_token(unsigned  char **tokp, int toklen,
  52                    struct xdr_netobj *mic_hdr,
  53                    struct xdr_netobj *md5cksum, int md5elen, int md5zbit);
  54 u32 spkm3_verify_mic_token(unsigned char **tokp, int *mic_hdrlen,
  55                    unsigned char **cksum);