e678e06bf8
We designed the krb5 context import without completely understanding the context. Now it's clear that there are a number of fields that we ignore, or that we depend on having one single value. In particular, we only support one value of signalg currently; so let's check the signalg field in the downcall (in case we decide there's something else we could support here eventually), but ignore it otherwise. Signed-off-by: J. Bruce Fields <bfields@citi.umich.edu> Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
162 lines
5.4 KiB
C
162 lines
5.4 KiB
C
/*
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* linux/include/linux/sunrpc/gss_krb5_types.h
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*
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* Adapted from MIT Kerberos 5-1.2.1 lib/include/krb5.h,
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* lib/gssapi/krb5/gssapiP_krb5.h, and others
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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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* Bruce Fields <bfields@umich.edu>
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*/
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/*
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* Copyright 1995 by the Massachusetts Institute of Technology.
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* All Rights Reserved.
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*
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* Export of this software from the United States of America may
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* require a specific license from the United States Government.
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* It is the responsibility of any person or organization contemplating
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* export to obtain such a license before exporting.
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*
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* WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
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* distribute this software and its documentation for any purpose and
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* without fee is hereby granted, provided that the above copyright
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* notice appear in all copies and that both that copyright notice and
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* this permission notice appear in supporting documentation, and that
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* the name of M.I.T. not be used in advertising or publicity pertaining
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* to distribution of the software without specific, written prior
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* permission. Furthermore if you modify this software you must label
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* your software as modified software and not distribute it in such a
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* fashion that it might be confused with the original M.I.T. software.
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* M.I.T. makes no representations about the suitability of
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* this software for any purpose. It is provided "as is" without express
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* or implied warranty.
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*
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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 krb5_ctx {
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int initiate; /* 1 = initiating, 0 = accepting */
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int seed_init;
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unsigned char seed[16];
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int sealalg;
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struct crypto_blkcipher *enc;
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struct crypto_blkcipher *seq;
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s32 endtime;
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u32 seq_send;
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struct xdr_netobj mech_used;
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};
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extern spinlock_t krb5_seq_lock;
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#define KG_TOK_MIC_MSG 0x0101
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#define KG_TOK_WRAP_MSG 0x0201
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enum sgn_alg {
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SGN_ALG_DES_MAC_MD5 = 0x0000,
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SGN_ALG_MD2_5 = 0x0001,
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SGN_ALG_DES_MAC = 0x0002,
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SGN_ALG_3 = 0x0003, /* not published */
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SGN_ALG_HMAC_MD5 = 0x0011, /* microsoft w2k; no support */
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SGN_ALG_HMAC_SHA1_DES3_KD = 0x0004
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};
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enum seal_alg {
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SEAL_ALG_NONE = 0xffff,
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SEAL_ALG_DES = 0x0000,
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SEAL_ALG_1 = 0x0001, /* not published */
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SEAL_ALG_MICROSOFT_RC4 = 0x0010,/* microsoft w2k; no support */
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SEAL_ALG_DES3KD = 0x0002
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};
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#define KRB5_CKSUM_LENGTH 8
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#define CKSUMTYPE_CRC32 0x0001
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#define CKSUMTYPE_RSA_MD4 0x0002
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#define CKSUMTYPE_RSA_MD4_DES 0x0003
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#define CKSUMTYPE_DESCBC 0x0004
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#define CKSUMTYPE_RSA_MD5 0x0007
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#define CKSUMTYPE_RSA_MD5_DES 0x0008
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#define CKSUMTYPE_NIST_SHA 0x0009
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#define CKSUMTYPE_HMAC_SHA1_DES3 0x000c
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/* from gssapi_err_krb5.h */
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#define KG_CCACHE_NOMATCH (39756032L)
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#define KG_KEYTAB_NOMATCH (39756033L)
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#define KG_TGT_MISSING (39756034L)
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#define KG_NO_SUBKEY (39756035L)
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#define KG_CONTEXT_ESTABLISHED (39756036L)
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#define KG_BAD_SIGN_TYPE (39756037L)
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#define KG_BAD_LENGTH (39756038L)
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#define KG_CTX_INCOMPLETE (39756039L)
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#define KG_CONTEXT (39756040L)
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#define KG_CRED (39756041L)
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#define KG_ENC_DESC (39756042L)
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#define KG_BAD_SEQ (39756043L)
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#define KG_EMPTY_CCACHE (39756044L)
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#define KG_NO_CTYPES (39756045L)
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/* per Kerberos v5 protocol spec crypto types from the wire.
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* these get mapped to linux kernel crypto routines.
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*/
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#define ENCTYPE_NULL 0x0000
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#define ENCTYPE_DES_CBC_CRC 0x0001 /* DES cbc mode with CRC-32 */
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#define ENCTYPE_DES_CBC_MD4 0x0002 /* DES cbc mode with RSA-MD4 */
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#define ENCTYPE_DES_CBC_MD5 0x0003 /* DES cbc mode with RSA-MD5 */
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#define ENCTYPE_DES_CBC_RAW 0x0004 /* DES cbc mode raw */
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/* XXX deprecated? */
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#define ENCTYPE_DES3_CBC_SHA 0x0005 /* DES-3 cbc mode with NIST-SHA */
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#define ENCTYPE_DES3_CBC_RAW 0x0006 /* DES-3 cbc mode raw */
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#define ENCTYPE_DES_HMAC_SHA1 0x0008
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#define ENCTYPE_DES3_CBC_SHA1 0x0010
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#define ENCTYPE_UNKNOWN 0x01ff
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s32
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make_checksum(s32 cksumtype, char *header, int hdrlen, struct xdr_buf *body,
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int body_offset, struct xdr_netobj *cksum);
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u32 gss_get_mic_kerberos(struct gss_ctx *, struct xdr_buf *,
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struct xdr_netobj *);
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u32 gss_verify_mic_kerberos(struct gss_ctx *, struct xdr_buf *,
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struct xdr_netobj *);
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u32
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gss_wrap_kerberos(struct gss_ctx *ctx_id, int offset,
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struct xdr_buf *outbuf, struct page **pages);
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u32
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gss_unwrap_kerberos(struct gss_ctx *ctx_id, int offset,
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struct xdr_buf *buf);
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u32
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krb5_encrypt(struct crypto_blkcipher *key,
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void *iv, void *in, void *out, int length);
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u32
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krb5_decrypt(struct crypto_blkcipher *key,
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void *iv, void *in, void *out, int length);
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int
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gss_encrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *outbuf,
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int offset, struct page **pages);
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int
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gss_decrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *inbuf,
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int offset);
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s32
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krb5_make_seq_num(struct crypto_blkcipher *key,
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int direction,
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s32 seqnum, unsigned char *cksum, unsigned char *buf);
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s32
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krb5_get_seq_num(struct crypto_blkcipher *key,
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unsigned char *cksum,
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unsigned char *buf, int *direction, s32 * seqnum);
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