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
14struct 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 */
26extern const struct xdr_netobj hmac_md5_oid;
27extern 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
36u32 spkm3_make_token(struct spkm3_ctx *ctx, struct xdr_buf * text, struct xdr_netobj * token, int toktype);
37
38u32 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
43s32 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);
46void asn1_bitstring_len(struct xdr_netobj *in, int *enclen, int *zerobits);
47int decode_asn1_bitstring(struct xdr_netobj *out, char *in, int enclen,
48                   int explen);
49void spkm3_mic_header(unsigned char **hdrbuf, unsigned int *hdrlen,
50                   unsigned char *ctxhdr, int elen, int zbit);
51void spkm3_make_mic_token(unsigned  char **tokp, int toklen,
52                   struct xdr_netobj *mic_hdr,
53                   struct xdr_netobj *md5cksum, int md5elen, int md5zbit);
54u32 spkm3_verify_mic_token(unsigned char **tokp, int *mic_hdrlen,
55                   unsigned char **cksum);
56