[deliverable/linux.git] / include / linux / sunrpc / gss_krb5.h

/*
 *  linux/include/linux/sunrpc/gss_krb5_types.h
 *
 *  Adapted from MIT Kerberos 5-1.2.1 lib/include/krb5.h,
 *  lib/gssapi/krb5/gssapiP_krb5.h, and others
 *
 *  Copyright (c) 2000 The Regents of the University of Michigan.
 *  All rights reserved.
 *
 *  Andy Adamson   <andros@umich.edu>
 *  Bruce Fields   <bfields@umich.edu>
 */

/*
 * Copyright 1995 by the Massachusetts Institute of Technology.
 * All Rights Reserved.
 *
 * Export of this software from the United States of America may
 *   require a specific license from the United States Government.
 *   It is the responsibility of any person or organization contemplating
 *   export to obtain such a license before exporting.
 *
 * WITHIN THAT CONSTRAINT, permission to use, copy, modify, and
 * distribute this software and its documentation for any purpose and
 * without fee is hereby granted, provided that the above copyright
 * notice appear in all copies and that both that copyright notice and
 * this permission notice appear in supporting documentation, and that
 * the name of M.I.T. not be used in advertising or publicity pertaining
 * to distribution of the software without specific, written prior
 * permission.  Furthermore if you modify this software you must label
 * your software as modified software and not distribute it in such a
 * fashion that it might be confused with the original M.I.T. software.
 * M.I.T. makes no representations about the suitability of
 * this software for any purpose.  It is provided "as is" without express
 * or implied warranty.
 *
 */

#include <linux/sunrpc/auth_gss.h>
#include <linux/sunrpc/gss_err.h>
#include <linux/sunrpc/gss_asn1.h>

struct krb5_ctx {
	int			initiate; /* 1 = initiating, 0 = accepting */
	int			seed_init;
	unsigned char		seed[16];
	int			signalg;
	int			sealalg;
	struct crypto_tfm	*enc;
	struct crypto_tfm	*seq;
	s32			endtime;
	u32			seq_send;
	struct xdr_netobj	mech_used;
};

#define KG_TOK_MIC_MSG    0x0101
#define KG_TOK_WRAP_MSG   0x0201

enum sgn_alg {
	SGN_ALG_DES_MAC_MD5 = 0x0000,
	SGN_ALG_MD2_5 = 0x0001,
	SGN_ALG_DES_MAC = 0x0002,
	SGN_ALG_3 = 0x0003,		/* not published */
	SGN_ALG_HMAC_MD5 = 0x0011,	/* microsoft w2k; no support */
	SGN_ALG_HMAC_SHA1_DES3_KD = 0x0004
};
enum seal_alg {
	SEAL_ALG_NONE = 0xffff,
	SEAL_ALG_DES = 0x0000,
	SEAL_ALG_1 = 0x0001,		/* not published */
	SEAL_ALG_MICROSOFT_RC4 = 0x0010,/* microsoft w2k; no support */
	SEAL_ALG_DES3KD = 0x0002
};

#define KRB5_CKSUM_LENGTH 8

#define CKSUMTYPE_CRC32			0x0001
#define CKSUMTYPE_RSA_MD4		0x0002
#define CKSUMTYPE_RSA_MD4_DES		0x0003
#define CKSUMTYPE_DESCBC		0x0004
#define CKSUMTYPE_RSA_MD5		0x0007
#define CKSUMTYPE_RSA_MD5_DES		0x0008
#define CKSUMTYPE_NIST_SHA		0x0009
#define CKSUMTYPE_HMAC_SHA1_DES3	0x000c

/* from gssapi_err_krb5.h */
#define KG_CCACHE_NOMATCH                        (39756032L)
#define KG_KEYTAB_NOMATCH                        (39756033L)
#define KG_TGT_MISSING                           (39756034L)
#define KG_NO_SUBKEY                             (39756035L)
#define KG_CONTEXT_ESTABLISHED                   (39756036L)
#define KG_BAD_SIGN_TYPE                         (39756037L)
#define KG_BAD_LENGTH                            (39756038L)
#define KG_CTX_INCOMPLETE                        (39756039L)
#define KG_CONTEXT                               (39756040L)
#define KG_CRED                                  (39756041L)
#define KG_ENC_DESC                              (39756042L)
#define KG_BAD_SEQ                               (39756043L)
#define KG_EMPTY_CCACHE                          (39756044L)
#define KG_NO_CTYPES                             (39756045L)

/* per Kerberos v5 protocol spec crypto types from the wire. 
 * these get mapped to linux kernel crypto routines.  
 */
#define ENCTYPE_NULL            0x0000
#define ENCTYPE_DES_CBC_CRC     0x0001	/* DES cbc mode with CRC-32 */
#define ENCTYPE_DES_CBC_MD4     0x0002	/* DES cbc mode with RSA-MD4 */
#define ENCTYPE_DES_CBC_MD5     0x0003	/* DES cbc mode with RSA-MD5 */
#define ENCTYPE_DES_CBC_RAW     0x0004	/* DES cbc mode raw */
/* XXX deprecated? */
#define ENCTYPE_DES3_CBC_SHA    0x0005	/* DES-3 cbc mode with NIST-SHA */
#define ENCTYPE_DES3_CBC_RAW    0x0006	/* DES-3 cbc mode raw */
#define ENCTYPE_DES_HMAC_SHA1   0x0008
#define ENCTYPE_DES3_CBC_SHA1   0x0010
#define ENCTYPE_UNKNOWN         0x01ff

s32
make_checksum(s32 cksumtype, char *header, int hdrlen, struct xdr_buf *body,
		   int body_offset, struct xdr_netobj *cksum);

u32 gss_get_mic_kerberos(struct gss_ctx *, struct xdr_buf *,
		struct xdr_netobj *);

u32 gss_verify_mic_kerberos(struct gss_ctx *, struct xdr_buf *,
		struct xdr_netobj *);

u32
gss_wrap_kerberos(struct gss_ctx *ctx_id, int offset,
		struct xdr_buf *outbuf, struct page **pages);

u32
gss_unwrap_kerberos(struct gss_ctx *ctx_id, int offset,
		struct xdr_buf *buf);


u32
krb5_encrypt(struct crypto_tfm * key,
	     void *iv, void *in, void *out, int length);

u32
krb5_decrypt(struct crypto_tfm * key,
	     void *iv, void *in, void *out, int length); 

int
gss_encrypt_xdr_buf(struct crypto_tfm *tfm, struct xdr_buf *outbuf, int offset,
		struct page **pages);

int
gss_decrypt_xdr_buf(struct crypto_tfm *tfm, struct xdr_buf *inbuf, int offset);

s32
krb5_make_seq_num(struct crypto_tfm * key,
		int direction,
		s32 seqnum, unsigned char *cksum, unsigned char *buf);

s32
krb5_get_seq_num(struct crypto_tfm * key,
	       unsigned char *cksum,
	       unsigned char *buf, int *direction, s32 * seqnum);
Commit	Line	Data
1da177e4 LT	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	int seed_init;
	46	unsigned char seed[16];
	47	int signalg;
	48	int sealalg;
	49	struct crypto_tfm *enc;
	50	struct crypto_tfm *seq;
	51	s32 endtime;
	52	u32 seq_send;
	53	struct xdr_netobj mech_used;
	54	};
	55
	56	#define KG_TOK_MIC_MSG 0x0101
	57	#define KG_TOK_WRAP_MSG 0x0201
	58
	59	enum sgn_alg {
	60	SGN_ALG_DES_MAC_MD5 = 0x0000,
	61	SGN_ALG_MD2_5 = 0x0001,
	62	SGN_ALG_DES_MAC = 0x0002,
	63	SGN_ALG_3 = 0x0003, /* not published */
	64	SGN_ALG_HMAC_MD5 = 0x0011, /* microsoft w2k; no support */
65	SGN_ALG_HMAC_SHA1_DES3_KD = 0x0004
66	};
67	enum seal_alg {
68	SEAL_ALG_NONE = 0xffff,
69	SEAL_ALG_DES = 0x0000,
70	SEAL_ALG_1 = 0x0001, /* not published */
71	SEAL_ALG_MICROSOFT_RC4 = 0x0010,/* microsoft w2k; no support */
72	SEAL_ALG_DES3KD = 0x0002
73	};
74
75	#define KRB5_CKSUM_LENGTH 8
76
77	#define CKSUMTYPE_CRC32 0x0001
78	#define CKSUMTYPE_RSA_MD4 0x0002
79	#define CKSUMTYPE_RSA_MD4_DES 0x0003
80	#define CKSUMTYPE_DESCBC 0x0004
81	#define CKSUMTYPE_RSA_MD5 0x0007
82	#define CKSUMTYPE_RSA_MD5_DES 0x0008
83	#define CKSUMTYPE_NIST_SHA 0x0009
84	#define CKSUMTYPE_HMAC_SHA1_DES3 0x000c
85
86	/* from gssapi_err_krb5.h */
87	#define KG_CCACHE_NOMATCH (39756032L)
88	#define KG_KEYTAB_NOMATCH (39756033L)
89	#define KG_TGT_MISSING (39756034L)
90	#define KG_NO_SUBKEY (39756035L)
91	#define KG_CONTEXT_ESTABLISHED (39756036L)
92	#define KG_BAD_SIGN_TYPE (39756037L)
93	#define KG_BAD_LENGTH (39756038L)
94	#define KG_CTX_INCOMPLETE (39756039L)
95	#define KG_CONTEXT (39756040L)
96	#define KG_CRED (39756041L)
97	#define KG_ENC_DESC (39756042L)
98	#define KG_BAD_SEQ (39756043L)
99	#define KG_EMPTY_CCACHE (39756044L)
100	#define KG_NO_CTYPES (39756045L)
101
102	/* per Kerberos v5 protocol spec crypto types from the wire.
103	* these get mapped to linux kernel crypto routines.
104	*/
105	#define ENCTYPE_NULL 0x0000
106	#define ENCTYPE_DES_CBC_CRC 0x0001 /* DES cbc mode with CRC-32 */
107	#define ENCTYPE_DES_CBC_MD4 0x0002 /* DES cbc mode with RSA-MD4 */
108	#define ENCTYPE_DES_CBC_MD5 0x0003 /* DES cbc mode with RSA-MD5 */
109	#define ENCTYPE_DES_CBC_RAW 0x0004 /* DES cbc mode raw */
110	/* XXX deprecated? */
111	#define ENCTYPE_DES3_CBC_SHA 0x0005 /* DES-3 cbc mode with NIST-SHA */
112	#define ENCTYPE_DES3_CBC_RAW 0x0006 /* DES-3 cbc mode raw */
113	#define ENCTYPE_DES_HMAC_SHA1 0x0008
114	#define ENCTYPE_DES3_CBC_SHA1 0x0010
115	#define ENCTYPE_UNKNOWN 0x01ff
116
117	s32
118	make_checksum(s32 cksumtype, char header, int hdrlen, struct xdr_buf body,
14ae162c	119	int body_offset, struct xdr_netobj *cksum);
1da177e4	120
a0857d03 BF	121	u32 gss_get_mic_kerberos(struct gss_ctx , struct xdr_buf ,
a0857d03 BF	122	struct xdr_netobj *);
1da177e4	123
a0857d03 BF	124	u32 gss_verify_mic_kerberos(struct gss_ctx , struct xdr_buf ,
a0857d03 BF	125	struct xdr_netobj *);
1da177e4	126
14ae162c	127	u32
00fd6e14	128	gss_wrap_kerberos(struct gss_ctx *ctx_id, int offset,
14ae162c BF	129	struct xdr_buf outbuf, struct page *pages);
	130
	131	u32
00fd6e14	132	gss_unwrap_kerberos(struct gss_ctx *ctx_id, int offset,
14ae162c BF	133	struct xdr_buf *buf);
	134
	135
1da177e4 LT	136	u32
	137	krb5_encrypt(struct crypto_tfm * key,
	138	void iv, void in, void *out, int length);
	139
	140	u32
	141	krb5_decrypt(struct crypto_tfm * key,
	142	void iv, void in, void *out, int length);
	143
14ae162c BF	144	int
	145	gss_encrypt_xdr_buf(struct crypto_tfm tfm, struct xdr_buf outbuf, int offset,
	146	struct page **pages);
	147
	148	int
	149	gss_decrypt_xdr_buf(struct crypto_tfm tfm, struct xdr_buf inbuf, int offset);
	150
1da177e4 LT	151	s32
	152	krb5_make_seq_num(struct crypto_tfm * key,
	153	int direction,
	154	s32 seqnum, unsigned char cksum, unsigned char buf);
	155
	156	s32
	157	krb5_get_seq_num(struct crypto_tfm * key,
	158	unsigned char *cksum,
	159	unsigned char buf, int direction, s32 * seqnum);