adeb8133dd
This updates the spkm3 code to bring it up to date with our current understanding of the spkm3 spec. In doing so, we're changing the downcall format used by gssd in the spkm3 case, which will cause an incompatilibity with old userland spkm3 support. Since the old code a) didn't implement the protocol correctly, and b) was never distributed except in the form of some experimental patches from the citi web site, we're assuming this is OK. We do detect the old downcall format and print warning (and fail). We also include a version number in the new downcall format, to be used in the future in case any further change is required. In some more detail: - fix integrity support - removed dependency on NIDs. instead OIDs are used - known OID values for algorithms added. - fixed some context fields and types Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
56 lines
1.9 KiB
C
56 lines
1.9 KiB
C
/*
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* linux/include/linux/sunrpc/gss_spkm3.h
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*
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* Copyright (c) 2000 The Regents of the University of Michigan.
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* All rights reserved.
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*
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* Andy Adamson <andros@umich.edu>
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*/
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#include <linux/sunrpc/auth_gss.h>
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#include <linux/sunrpc/gss_err.h>
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#include <linux/sunrpc/gss_asn1.h>
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struct spkm3_ctx {
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struct xdr_netobj ctx_id; /* per message context id */
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int endtime; /* endtime of the context */
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struct xdr_netobj mech_used;
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unsigned int ret_flags ;
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struct xdr_netobj conf_alg;
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struct xdr_netobj derived_conf_key;
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struct xdr_netobj intg_alg;
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struct xdr_netobj derived_integ_key;
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};
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/* OIDs declarations for K-ALG, I-ALG, C-ALG, and OWF-ALG */
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extern const struct xdr_netobj hmac_md5_oid;
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extern const struct xdr_netobj cast5_cbc_oid;
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/* SPKM InnerContext Token types */
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#define SPKM_ERROR_TOK 3
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#define SPKM_MIC_TOK 4
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#define SPKM_WRAP_TOK 5
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#define SPKM_DEL_TOK 6
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u32 spkm3_make_token(struct spkm3_ctx *ctx, struct xdr_buf * text, struct xdr_netobj * token, int toktype);
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u32 spkm3_read_token(struct spkm3_ctx *ctx, struct xdr_netobj *read_token, struct xdr_buf *message_buffer, int toktype);
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#define CKSUMTYPE_RSA_MD5 0x0007
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#define CKSUMTYPE_HMAC_MD5 0x0008
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s32 make_spkm3_checksum(s32 cksumtype, struct xdr_netobj *key, char *header,
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unsigned int hdrlen, struct xdr_buf *body,
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unsigned int body_offset, struct xdr_netobj *cksum);
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void asn1_bitstring_len(struct xdr_netobj *in, int *enclen, int *zerobits);
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int decode_asn1_bitstring(struct xdr_netobj *out, char *in, int enclen,
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int explen);
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void spkm3_mic_header(unsigned char **hdrbuf, unsigned int *hdrlen,
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unsigned char *ctxhdr, int elen, int zbit);
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void spkm3_make_mic_token(unsigned char **tokp, int toklen,
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struct xdr_netobj *mic_hdr,
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struct xdr_netobj *md5cksum, int md5elen, int md5zbit);
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u32 spkm3_verify_mic_token(unsigned char **tokp, int *mic_hdrlen,
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unsigned char **cksum);
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