2006-11-03 15:23:16 +00:00
|
|
|
/*-
|
2008-12-06 13:19:54 +00:00
|
|
|
* Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
|
2012-05-23 11:26:28 +00:00
|
|
|
* Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
|
|
|
|
* Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
|
2006-11-03 15:23:16 +00:00
|
|
|
*
|
|
|
|
* Redistribution and use in source and binary forms, with or without
|
|
|
|
* modification, are permitted provided that the following conditions are met:
|
|
|
|
*
|
|
|
|
* a) Redistributions of source code must retain the above copyright notice,
|
2011-12-17 19:21:40 +00:00
|
|
|
* this list of conditions and the following disclaimer.
|
2006-11-03 15:23:16 +00:00
|
|
|
*
|
|
|
|
* b) Redistributions in binary form must reproduce the above copyright
|
|
|
|
* notice, this list of conditions and the following disclaimer in
|
2011-12-17 19:21:40 +00:00
|
|
|
* the documentation and/or other materials provided with the distribution.
|
2006-11-03 15:23:16 +00:00
|
|
|
*
|
|
|
|
* c) Neither the name of Cisco Systems, Inc. nor the names of its
|
|
|
|
* contributors may be used to endorse or promote products derived
|
|
|
|
* from this software without specific prior written permission.
|
|
|
|
*
|
|
|
|
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
|
|
|
|
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
|
|
|
|
* THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
|
|
|
|
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
|
|
|
|
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
|
|
|
|
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
|
|
|
|
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
|
|
|
|
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
|
|
|
|
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
|
|
|
|
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
|
|
|
|
* THE POSSIBILITY OF SUCH DAMAGE.
|
|
|
|
*/
|
|
|
|
|
|
|
|
#include <sys/cdefs.h>
|
|
|
|
__FBSDID("$FreeBSD$");
|
|
|
|
|
2012-05-23 11:26:28 +00:00
|
|
|
#ifndef _NETINET_SCTP_AUTH_H_
|
|
|
|
#define _NETINET_SCTP_AUTH_H_
|
2006-11-03 15:23:16 +00:00
|
|
|
|
2013-09-02 22:48:41 +00:00
|
|
|
#include <netinet/sctp_os.h>
|
2006-11-03 15:23:16 +00:00
|
|
|
|
|
|
|
/* digest lengths */
|
|
|
|
#define SCTP_AUTH_DIGEST_LEN_SHA1 20
|
|
|
|
#define SCTP_AUTH_DIGEST_LEN_SHA256 32
|
2013-09-02 22:48:41 +00:00
|
|
|
#define SCTP_AUTH_DIGEST_LEN_MAX SCTP_AUTH_DIGEST_LEN_SHA256
|
2006-11-03 15:23:16 +00:00
|
|
|
|
|
|
|
/* random sizes */
|
|
|
|
#define SCTP_AUTH_RANDOM_SIZE_DEFAULT 32
|
|
|
|
#define SCTP_AUTH_RANDOM_SIZE_REQUIRED 32
|
|
|
|
#define SCTP_AUTH_RANDOM_SIZE_MAX 256
|
|
|
|
|
|
|
|
/* union of all supported HMAC algorithm contexts */
|
|
|
|
typedef union sctp_hash_context {
|
2013-09-02 22:48:41 +00:00
|
|
|
SCTP_SHA1_CTX sha1;
|
|
|
|
SCTP_SHA256_CTX sha256;
|
2006-11-03 15:23:16 +00:00
|
|
|
} sctp_hash_context_t;
|
|
|
|
|
|
|
|
typedef struct sctp_key {
|
|
|
|
uint32_t keylen;
|
2010-01-22 07:53:41 +00:00
|
|
|
uint8_t key[];
|
2006-11-03 15:23:16 +00:00
|
|
|
} sctp_key_t;
|
|
|
|
|
|
|
|
typedef struct sctp_shared_key {
|
|
|
|
LIST_ENTRY(sctp_shared_key) next;
|
|
|
|
sctp_key_t *key; /* key text */
|
2008-12-06 13:19:54 +00:00
|
|
|
uint32_t refcount; /* reference count */
|
2006-11-03 15:23:16 +00:00
|
|
|
uint16_t keyid; /* shared key ID */
|
2008-12-06 13:19:54 +00:00
|
|
|
uint8_t deactivated; /* key is deactivated */
|
2006-11-03 15:23:16 +00:00
|
|
|
} sctp_sharedkey_t;
|
|
|
|
|
|
|
|
LIST_HEAD(sctp_keyhead, sctp_shared_key);
|
|
|
|
|
|
|
|
/* authentication chunks list */
|
|
|
|
typedef struct sctp_auth_chklist {
|
|
|
|
uint8_t chunks[256];
|
|
|
|
uint8_t num_chunks;
|
|
|
|
} sctp_auth_chklist_t;
|
|
|
|
|
|
|
|
/* hmac algos supported list */
|
|
|
|
typedef struct sctp_hmaclist {
|
|
|
|
uint16_t max_algo; /* max algorithms allocated */
|
|
|
|
uint16_t num_algo; /* num algorithms used */
|
2010-01-22 07:53:41 +00:00
|
|
|
uint16_t hmac[];
|
2006-11-03 15:23:16 +00:00
|
|
|
} sctp_hmaclist_t;
|
|
|
|
|
|
|
|
/* authentication info */
|
2011-05-06 20:40:33 +00:00
|
|
|
typedef struct sctp_authinformation {
|
2006-11-03 15:23:16 +00:00
|
|
|
sctp_key_t *random; /* local random key (concatenated) */
|
|
|
|
uint32_t random_len; /* local random number length for param */
|
|
|
|
sctp_key_t *peer_random;/* peer's random key (concatenated) */
|
2008-12-06 13:19:54 +00:00
|
|
|
sctp_key_t *assoc_key; /* cached concatenated send key */
|
|
|
|
sctp_key_t *recv_key; /* cached concatenated recv key */
|
|
|
|
uint16_t active_keyid; /* active send keyid */
|
2006-11-03 15:23:16 +00:00
|
|
|
uint16_t assoc_keyid; /* current send keyid (cached) */
|
|
|
|
uint16_t recv_keyid; /* last recv keyid (cached) */
|
2011-05-06 20:40:33 +00:00
|
|
|
} sctp_authinfo_t;
|
2006-11-03 15:23:16 +00:00
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
/*
|
|
|
|
* Macros
|
|
|
|
*/
|
|
|
|
#define sctp_auth_is_required_chunk(chunk, list) ((list == NULL) ? (0) : (list->chunks[chunk] != 0))
|
|
|
|
|
|
|
|
/*
|
|
|
|
* function prototypes
|
|
|
|
*/
|
|
|
|
|
|
|
|
/* socket option api functions */
|
|
|
|
extern sctp_auth_chklist_t *sctp_alloc_chunklist(void);
|
|
|
|
extern void sctp_free_chunklist(sctp_auth_chklist_t * chklist);
|
|
|
|
extern void sctp_clear_chunklist(sctp_auth_chklist_t * chklist);
|
|
|
|
extern sctp_auth_chklist_t *sctp_copy_chunklist(sctp_auth_chklist_t * chklist);
|
|
|
|
extern int sctp_auth_add_chunk(uint8_t chunk, sctp_auth_chklist_t * list);
|
|
|
|
extern int sctp_auth_delete_chunk(uint8_t chunk, sctp_auth_chklist_t * list);
|
2007-02-12 23:24:31 +00:00
|
|
|
extern size_t sctp_auth_get_chklist_size(const sctp_auth_chklist_t * list);
|
2006-11-03 15:23:16 +00:00
|
|
|
extern void sctp_auth_set_default_chunks(sctp_auth_chklist_t * list);
|
2008-12-06 13:19:54 +00:00
|
|
|
extern int
|
|
|
|
sctp_serialize_auth_chunks(const sctp_auth_chklist_t * list,
|
|
|
|
uint8_t * ptr);
|
|
|
|
extern int
|
|
|
|
sctp_pack_auth_chunks(const sctp_auth_chklist_t * list,
|
|
|
|
uint8_t * ptr);
|
|
|
|
extern int
|
2006-11-03 15:23:16 +00:00
|
|
|
sctp_unpack_auth_chunks(const uint8_t * ptr, uint8_t num_chunks,
|
|
|
|
sctp_auth_chklist_t * list);
|
|
|
|
|
|
|
|
/* key handling */
|
|
|
|
extern sctp_key_t *sctp_alloc_key(uint32_t keylen);
|
|
|
|
extern void sctp_free_key(sctp_key_t * key);
|
|
|
|
extern void sctp_print_key(sctp_key_t * key, const char *str);
|
|
|
|
extern void sctp_show_key(sctp_key_t * key, const char *str);
|
|
|
|
extern sctp_key_t *sctp_generate_random_key(uint32_t keylen);
|
|
|
|
extern sctp_key_t *sctp_set_key(uint8_t * key, uint32_t keylen);
|
|
|
|
extern sctp_key_t *
|
|
|
|
sctp_compute_hashkey(sctp_key_t * key1, sctp_key_t * key2,
|
|
|
|
sctp_key_t * shared);
|
|
|
|
|
|
|
|
/* shared key handling */
|
|
|
|
extern sctp_sharedkey_t *sctp_alloc_sharedkey(void);
|
|
|
|
extern void sctp_free_sharedkey(sctp_sharedkey_t * skey);
|
|
|
|
extern sctp_sharedkey_t *
|
2008-12-06 13:19:54 +00:00
|
|
|
sctp_find_sharedkey(struct sctp_keyhead *shared_keys,
|
|
|
|
uint16_t key_id);
|
|
|
|
extern int
|
2006-11-03 15:23:16 +00:00
|
|
|
sctp_insert_sharedkey(struct sctp_keyhead *shared_keys,
|
|
|
|
sctp_sharedkey_t * new_skey);
|
2008-12-06 13:19:54 +00:00
|
|
|
extern int
|
2006-11-03 15:23:16 +00:00
|
|
|
sctp_copy_skeylist(const struct sctp_keyhead *src,
|
|
|
|
struct sctp_keyhead *dest);
|
|
|
|
|
2008-12-06 13:19:54 +00:00
|
|
|
/* ref counts on shared keys, by key id */
|
|
|
|
extern void sctp_auth_key_acquire(struct sctp_tcb *stcb, uint16_t keyid);
|
2011-05-08 09:11:59 +00:00
|
|
|
extern void
|
|
|
|
sctp_auth_key_release(struct sctp_tcb *stcb, uint16_t keyid,
|
|
|
|
int so_locked);
|
2008-12-06 13:19:54 +00:00
|
|
|
|
|
|
|
|
2006-11-03 15:23:16 +00:00
|
|
|
/* hmac list handling */
|
|
|
|
extern sctp_hmaclist_t *sctp_alloc_hmaclist(uint8_t num_hmacs);
|
|
|
|
extern void sctp_free_hmaclist(sctp_hmaclist_t * list);
|
|
|
|
extern int sctp_auth_add_hmacid(sctp_hmaclist_t * list, uint16_t hmac_id);
|
|
|
|
extern sctp_hmaclist_t *sctp_copy_hmaclist(sctp_hmaclist_t * list);
|
|
|
|
extern sctp_hmaclist_t *sctp_default_supported_hmaclist(void);
|
2007-02-12 23:24:31 +00:00
|
|
|
extern uint16_t
|
2006-11-03 15:23:16 +00:00
|
|
|
sctp_negotiate_hmacid(sctp_hmaclist_t * peer,
|
|
|
|
sctp_hmaclist_t * local);
|
|
|
|
extern int sctp_serialize_hmaclist(sctp_hmaclist_t * list, uint8_t * ptr);
|
|
|
|
extern int
|
|
|
|
sctp_verify_hmac_param(struct sctp_auth_hmac_algo *hmacs,
|
|
|
|
uint32_t num_hmacs);
|
|
|
|
|
|
|
|
extern sctp_authinfo_t *sctp_alloc_authinfo(void);
|
|
|
|
extern void sctp_free_authinfo(sctp_authinfo_t * authinfo);
|
|
|
|
|
|
|
|
/* keyed-HMAC functions */
|
|
|
|
extern uint32_t sctp_get_auth_chunk_len(uint16_t hmac_algo);
|
|
|
|
extern uint32_t sctp_get_hmac_digest_len(uint16_t hmac_algo);
|
2008-12-06 13:19:54 +00:00
|
|
|
extern uint32_t
|
2006-11-03 15:23:16 +00:00
|
|
|
sctp_hmac(uint16_t hmac_algo, uint8_t * key, uint32_t keylen,
|
2007-02-12 23:24:31 +00:00
|
|
|
uint8_t * text, uint32_t textlen, uint8_t * digest);
|
2008-12-06 13:19:54 +00:00
|
|
|
extern int
|
2006-11-03 15:23:16 +00:00
|
|
|
sctp_verify_hmac(uint16_t hmac_algo, uint8_t * key, uint32_t keylen,
|
2008-12-06 13:19:54 +00:00
|
|
|
uint8_t * text, uint32_t textlen, uint8_t * digest, uint32_t digestlen);
|
|
|
|
extern uint32_t
|
2006-11-03 15:23:16 +00:00
|
|
|
sctp_compute_hmac(uint16_t hmac_algo, sctp_key_t * key,
|
2007-02-12 23:24:31 +00:00
|
|
|
uint8_t * text, uint32_t textlen, uint8_t * digest);
|
2006-11-03 15:23:16 +00:00
|
|
|
extern int sctp_auth_is_supported_hmac(sctp_hmaclist_t * list, uint16_t id);
|
|
|
|
|
|
|
|
/* mbuf versions */
|
2008-12-06 13:19:54 +00:00
|
|
|
extern uint32_t
|
2006-11-03 15:23:16 +00:00
|
|
|
sctp_hmac_m(uint16_t hmac_algo, uint8_t * key, uint32_t keylen,
|
2007-06-09 13:46:57 +00:00
|
|
|
struct mbuf *m, uint32_t m_offset, uint8_t * digest, uint32_t trailer);
|
2008-12-06 13:19:54 +00:00
|
|
|
extern uint32_t
|
|
|
|
sctp_compute_hmac_m(uint16_t hmac_algo, sctp_key_t * key,
|
|
|
|
struct mbuf *m, uint32_t m_offset, uint8_t * digest);
|
2006-11-03 15:23:16 +00:00
|
|
|
|
|
|
|
/*
|
|
|
|
* authentication routines
|
|
|
|
*/
|
|
|
|
extern void sctp_clear_cachedkeys(struct sctp_tcb *stcb, uint16_t keyid);
|
|
|
|
extern void sctp_clear_cachedkeys_ep(struct sctp_inpcb *inp, uint16_t keyid);
|
|
|
|
extern int sctp_delete_sharedkey(struct sctp_tcb *stcb, uint16_t keyid);
|
|
|
|
extern int sctp_delete_sharedkey_ep(struct sctp_inpcb *inp, uint16_t keyid);
|
|
|
|
extern int sctp_auth_setactivekey(struct sctp_tcb *stcb, uint16_t keyid);
|
|
|
|
extern int sctp_auth_setactivekey_ep(struct sctp_inpcb *inp, uint16_t keyid);
|
2008-12-06 13:19:54 +00:00
|
|
|
extern int sctp_deact_sharedkey(struct sctp_tcb *stcb, uint16_t keyid);
|
|
|
|
extern int sctp_deact_sharedkey_ep(struct sctp_inpcb *inp, uint16_t keyid);
|
2006-11-03 15:23:16 +00:00
|
|
|
|
2008-12-06 13:19:54 +00:00
|
|
|
extern void
|
2006-11-03 15:23:16 +00:00
|
|
|
sctp_auth_get_cookie_params(struct sctp_tcb *stcb, struct mbuf *m,
|
|
|
|
uint32_t offset, uint32_t length);
|
2008-12-06 13:19:54 +00:00
|
|
|
extern void
|
2006-11-03 15:23:16 +00:00
|
|
|
sctp_fill_hmac_digest_m(struct mbuf *m, uint32_t auth_offset,
|
2008-12-06 13:19:54 +00:00
|
|
|
struct sctp_auth_chunk *auth, struct sctp_tcb *stcb, uint16_t key_id);
|
2006-11-03 15:23:16 +00:00
|
|
|
extern struct mbuf *
|
|
|
|
sctp_add_auth_chunk(struct mbuf *m, struct mbuf **m_end,
|
2008-12-06 13:19:54 +00:00
|
|
|
struct sctp_auth_chunk **auth_ret, uint32_t * offset,
|
|
|
|
struct sctp_tcb *stcb, uint8_t chunk);
|
|
|
|
extern int
|
2006-11-03 15:23:16 +00:00
|
|
|
sctp_handle_auth(struct sctp_tcb *stcb, struct sctp_auth_chunk *ch,
|
|
|
|
struct mbuf *m, uint32_t offset);
|
2008-12-06 13:19:54 +00:00
|
|
|
extern void
|
2006-11-03 15:23:16 +00:00
|
|
|
sctp_notify_authentication(struct sctp_tcb *stcb,
|
2008-12-06 13:19:54 +00:00
|
|
|
uint32_t indication, uint16_t keyid, uint16_t alt_keyid, int so_locked);
|
|
|
|
extern int
|
|
|
|
sctp_validate_init_auth_params(struct mbuf *m, int offset,
|
|
|
|
int limit);
|
|
|
|
extern void
|
|
|
|
sctp_initialize_auth_params(struct sctp_inpcb *inp,
|
|
|
|
struct sctp_tcb *stcb);
|
2006-11-03 15:23:16 +00:00
|
|
|
|
|
|
|
/* test functions */
|
|
|
|
#endif /* __SCTP_AUTH_H__ */
|