332 lines
11 KiB
C
332 lines
11 KiB
C
/*
|
|
* 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) 2000-2008 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 <crypto/skcipher.h>
|
|
#include <linux/sunrpc/auth_gss.h>
|
|
#include <linux/sunrpc/gss_err.h>
|
|
#include <linux/sunrpc/gss_asn1.h>
|
|
|
|
/* Length of constant used in key derivation */
|
|
#define GSS_KRB5_K5CLENGTH (5)
|
|
|
|
/* Maximum key length (in bytes) for the supported crypto algorithms*/
|
|
#define GSS_KRB5_MAX_KEYLEN (32)
|
|
|
|
/* Maximum checksum function output for the supported crypto algorithms */
|
|
#define GSS_KRB5_MAX_CKSUM_LEN (20)
|
|
|
|
/* Maximum blocksize for the supported crypto algorithms */
|
|
#define GSS_KRB5_MAX_BLOCKSIZE (16)
|
|
|
|
struct krb5_ctx;
|
|
|
|
struct gss_krb5_enctype {
|
|
const u32 etype; /* encryption (key) type */
|
|
const u32 ctype; /* checksum type */
|
|
const char *name; /* "friendly" name */
|
|
const char *encrypt_name; /* crypto encrypt name */
|
|
const char *cksum_name; /* crypto checksum name */
|
|
const u16 signalg; /* signing algorithm */
|
|
const u16 sealalg; /* sealing algorithm */
|
|
const u32 blocksize; /* encryption blocksize */
|
|
const u32 conflen; /* confounder length
|
|
(normally the same as
|
|
the blocksize) */
|
|
const u32 cksumlength; /* checksum length */
|
|
const u32 keyed_cksum; /* is it a keyed cksum? */
|
|
const u32 keybytes; /* raw key len, in bytes */
|
|
const u32 keylength; /* final key len, in bytes */
|
|
u32 (*encrypt) (struct crypto_skcipher *tfm,
|
|
void *iv, void *in, void *out,
|
|
int length); /* encryption function */
|
|
u32 (*decrypt) (struct crypto_skcipher *tfm,
|
|
void *iv, void *in, void *out,
|
|
int length); /* decryption function */
|
|
u32 (*mk_key) (const struct gss_krb5_enctype *gk5e,
|
|
struct xdr_netobj *in,
|
|
struct xdr_netobj *out); /* complete key generation */
|
|
u32 (*encrypt_v2) (struct krb5_ctx *kctx, u32 offset,
|
|
struct xdr_buf *buf,
|
|
struct page **pages); /* v2 encryption function */
|
|
u32 (*decrypt_v2) (struct krb5_ctx *kctx, u32 offset,
|
|
struct xdr_buf *buf, u32 *headskip,
|
|
u32 *tailskip); /* v2 decryption function */
|
|
};
|
|
|
|
/* krb5_ctx flags definitions */
|
|
#define KRB5_CTX_FLAG_INITIATOR 0x00000001
|
|
#define KRB5_CTX_FLAG_CFX 0x00000002
|
|
#define KRB5_CTX_FLAG_ACCEPTOR_SUBKEY 0x00000004
|
|
|
|
struct krb5_ctx {
|
|
int initiate; /* 1 = initiating, 0 = accepting */
|
|
u32 enctype;
|
|
u32 flags;
|
|
const struct gss_krb5_enctype *gk5e; /* enctype-specific info */
|
|
struct crypto_skcipher *enc;
|
|
struct crypto_skcipher *seq;
|
|
struct crypto_skcipher *acceptor_enc;
|
|
struct crypto_skcipher *initiator_enc;
|
|
struct crypto_skcipher *acceptor_enc_aux;
|
|
struct crypto_skcipher *initiator_enc_aux;
|
|
u8 Ksess[GSS_KRB5_MAX_KEYLEN]; /* session key */
|
|
u8 cksum[GSS_KRB5_MAX_KEYLEN];
|
|
s32 endtime;
|
|
u32 seq_send;
|
|
u64 seq_send64;
|
|
struct xdr_netobj mech_used;
|
|
u8 initiator_sign[GSS_KRB5_MAX_KEYLEN];
|
|
u8 acceptor_sign[GSS_KRB5_MAX_KEYLEN];
|
|
u8 initiator_seal[GSS_KRB5_MAX_KEYLEN];
|
|
u8 acceptor_seal[GSS_KRB5_MAX_KEYLEN];
|
|
u8 initiator_integ[GSS_KRB5_MAX_KEYLEN];
|
|
u8 acceptor_integ[GSS_KRB5_MAX_KEYLEN];
|
|
};
|
|
|
|
extern spinlock_t krb5_seq_lock;
|
|
|
|
/* The length of the Kerberos GSS token header */
|
|
#define GSS_KRB5_TOK_HDR_LEN (16)
|
|
|
|
#define KG_TOK_MIC_MSG 0x0101
|
|
#define KG_TOK_WRAP_MSG 0x0201
|
|
|
|
#define KG2_TOK_INITIAL 0x0101
|
|
#define KG2_TOK_RESPONSE 0x0202
|
|
#define KG2_TOK_MIC 0x0404
|
|
#define KG2_TOK_WRAP 0x0504
|
|
|
|
#define KG2_TOKEN_FLAG_SENTBYACCEPTOR 0x01
|
|
#define KG2_TOKEN_FLAG_SEALED 0x02
|
|
#define KG2_TOKEN_FLAG_ACCEPTORSUBKEY 0x04
|
|
|
|
#define KG2_RESP_FLAG_ERROR 0x0001
|
|
#define KG2_RESP_FLAG_DELEG_OK 0x0002
|
|
|
|
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 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
|
|
#define CKSUMTYPE_HMAC_SHA1_96_AES128 0x000f
|
|
#define CKSUMTYPE_HMAC_SHA1_96_AES256 0x0010
|
|
#define CKSUMTYPE_HMAC_MD5_ARCFOUR -138 /* Microsoft md5 hmac cksumtype */
|
|
|
|
/* 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_AES128_CTS_HMAC_SHA1_96 0x0011
|
|
#define ENCTYPE_AES256_CTS_HMAC_SHA1_96 0x0012
|
|
#define ENCTYPE_ARCFOUR_HMAC 0x0017
|
|
#define ENCTYPE_ARCFOUR_HMAC_EXP 0x0018
|
|
#define ENCTYPE_UNKNOWN 0x01ff
|
|
|
|
/*
|
|
* Constants used for key derivation
|
|
*/
|
|
/* for 3DES */
|
|
#define KG_USAGE_SEAL (22)
|
|
#define KG_USAGE_SIGN (23)
|
|
#define KG_USAGE_SEQ (24)
|
|
|
|
/* from rfc3961 */
|
|
#define KEY_USAGE_SEED_CHECKSUM (0x99)
|
|
#define KEY_USAGE_SEED_ENCRYPTION (0xAA)
|
|
#define KEY_USAGE_SEED_INTEGRITY (0x55)
|
|
|
|
/* from rfc4121 */
|
|
#define KG_USAGE_ACCEPTOR_SEAL (22)
|
|
#define KG_USAGE_ACCEPTOR_SIGN (23)
|
|
#define KG_USAGE_INITIATOR_SEAL (24)
|
|
#define KG_USAGE_INITIATOR_SIGN (25)
|
|
|
|
/*
|
|
* This compile-time check verifies that we will not exceed the
|
|
* slack space allotted by the client and server auth_gss code
|
|
* before they call gss_wrap().
|
|
*/
|
|
#define GSS_KRB5_MAX_SLACK_NEEDED \
|
|
(GSS_KRB5_TOK_HDR_LEN /* gss token header */ \
|
|
+ GSS_KRB5_MAX_CKSUM_LEN /* gss token checksum */ \
|
|
+ GSS_KRB5_MAX_BLOCKSIZE /* confounder */ \
|
|
+ GSS_KRB5_MAX_BLOCKSIZE /* possible padding */ \
|
|
+ GSS_KRB5_TOK_HDR_LEN /* encrypted hdr in v2 token */\
|
|
+ GSS_KRB5_MAX_CKSUM_LEN /* encryption hmac */ \
|
|
+ 4 + 4 /* RPC verifier */ \
|
|
+ GSS_KRB5_TOK_HDR_LEN \
|
|
+ GSS_KRB5_MAX_CKSUM_LEN)
|
|
|
|
u32
|
|
make_checksum(struct krb5_ctx *kctx, char *header, int hdrlen,
|
|
struct xdr_buf *body, int body_offset, u8 *cksumkey,
|
|
unsigned int usage, struct xdr_netobj *cksumout);
|
|
|
|
u32
|
|
make_checksum_v2(struct krb5_ctx *, char *header, int hdrlen,
|
|
struct xdr_buf *body, int body_offset, u8 *key,
|
|
unsigned int usage, 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_skcipher *key,
|
|
void *iv, void *in, void *out, int length);
|
|
|
|
u32
|
|
krb5_decrypt(struct crypto_skcipher *key,
|
|
void *iv, void *in, void *out, int length);
|
|
|
|
int
|
|
gss_encrypt_xdr_buf(struct crypto_skcipher *tfm, struct xdr_buf *outbuf,
|
|
int offset, struct page **pages);
|
|
|
|
int
|
|
gss_decrypt_xdr_buf(struct crypto_skcipher *tfm, struct xdr_buf *inbuf,
|
|
int offset);
|
|
|
|
s32
|
|
krb5_make_seq_num(struct krb5_ctx *kctx,
|
|
struct crypto_skcipher *key,
|
|
int direction,
|
|
u32 seqnum, unsigned char *cksum, unsigned char *buf);
|
|
|
|
s32
|
|
krb5_get_seq_num(struct krb5_ctx *kctx,
|
|
unsigned char *cksum,
|
|
unsigned char *buf, int *direction, u32 *seqnum);
|
|
|
|
int
|
|
xdr_extend_head(struct xdr_buf *buf, unsigned int base, unsigned int shiftlen);
|
|
|
|
u32
|
|
krb5_derive_key(const struct gss_krb5_enctype *gk5e,
|
|
const struct xdr_netobj *inkey,
|
|
struct xdr_netobj *outkey,
|
|
const struct xdr_netobj *in_constant,
|
|
gfp_t gfp_mask);
|
|
|
|
u32
|
|
gss_krb5_des3_make_key(const struct gss_krb5_enctype *gk5e,
|
|
struct xdr_netobj *randombits,
|
|
struct xdr_netobj *key);
|
|
|
|
u32
|
|
gss_krb5_aes_make_key(const struct gss_krb5_enctype *gk5e,
|
|
struct xdr_netobj *randombits,
|
|
struct xdr_netobj *key);
|
|
|
|
u32
|
|
gss_krb5_aes_encrypt(struct krb5_ctx *kctx, u32 offset,
|
|
struct xdr_buf *buf,
|
|
struct page **pages);
|
|
|
|
u32
|
|
gss_krb5_aes_decrypt(struct krb5_ctx *kctx, u32 offset,
|
|
struct xdr_buf *buf, u32 *plainoffset,
|
|
u32 *plainlen);
|
|
|
|
int
|
|
krb5_rc4_setup_seq_key(struct krb5_ctx *kctx,
|
|
struct crypto_skcipher *cipher,
|
|
unsigned char *cksum);
|
|
|
|
int
|
|
krb5_rc4_setup_enc_key(struct krb5_ctx *kctx,
|
|
struct crypto_skcipher *cipher,
|
|
s32 seqnum);
|
|
void
|
|
gss_krb5_make_confounder(char *p, u32 conflen);
|