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netwerk/sctp/src/netinet/sctp_auth.h@6474c204b198 (annotated)

netwerk/sctp/src/netinet/sctp_auth.h

Wed, 31 Dec 2014 06:09:35 +0100

author
Michael Schloh von Bennewitz <michael@schloh.com>
date
Wed, 31 Dec 2014 06:09:35 +0100
changeset 0
6474c204b198
permissions
-rwxr-xr-x

Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.

michael@0 1 /*-
michael@0 2 * Copyright (c) 2001-2008, by Cisco Systems, Inc. All rights reserved.
michael@0 3 * Copyright (c) 2008-2012, by Randall Stewart. All rights reserved.
michael@0 4 * Copyright (c) 2008-2012, by Michael Tuexen. All rights reserved.
michael@0 5 *
michael@0 6 * Redistribution and use in source and binary forms, with or without
michael@0 7 * modification, are permitted provided that the following conditions are met:
michael@0 8 *
michael@0 9 * a) Redistributions of source code must retain the above copyright notice,
michael@0 10 * this list of conditions and the following disclaimer.
michael@0 11 *
michael@0 12 * b) Redistributions in binary form must reproduce the above copyright
michael@0 13 * notice, this list of conditions and the following disclaimer in
michael@0 14 * the documentation and/or other materials provided with the distribution.
michael@0 15 *
michael@0 16 * c) Neither the name of Cisco Systems, Inc. nor the names of its
michael@0 17 * contributors may be used to endorse or promote products derived
michael@0 18 * from this software without specific prior written permission.
michael@0 19 *
michael@0 20 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
michael@0 21 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
michael@0 22 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
michael@0 23 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
michael@0 24 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
michael@0 25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
michael@0 26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
michael@0 27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
michael@0 28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
michael@0 29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
michael@0 30 * THE POSSIBILITY OF SUCH DAMAGE.
michael@0 31 */
michael@0 32
michael@0 33 #ifdef __FreeBSD__
michael@0 34 #include <sys/cdefs.h>
michael@0 35 __FBSDID("$FreeBSD: head/sys/netinet/sctp_auth.h 257804 2013-11-07 18:50:11Z tuexen $");
michael@0 36 #endif
michael@0 37
michael@0 38 #ifndef _NETINET_SCTP_AUTH_H_
michael@0 39 #define _NETINET_SCTP_AUTH_H_
michael@0 40
michael@0 41 #include <netinet/sctp_os.h>
michael@0 42
michael@0 43 /* digest lengths */
michael@0 44 #define SCTP_AUTH_DIGEST_LEN_SHA1 20
michael@0 45 #define SCTP_AUTH_DIGEST_LEN_SHA256 32
michael@0 46 #define SCTP_AUTH_DIGEST_LEN_MAX SCTP_AUTH_DIGEST_LEN_SHA256
michael@0 47
michael@0 48 /* random sizes */
michael@0 49 #define SCTP_AUTH_RANDOM_SIZE_DEFAULT 32
michael@0 50 #define SCTP_AUTH_RANDOM_SIZE_REQUIRED 32
michael@0 51
michael@0 52 /* union of all supported HMAC algorithm contexts */
michael@0 53 typedef union sctp_hash_context {
michael@0 54 SCTP_SHA1_CTX sha1;
michael@0 55 #if defined(SCTP_SUPPORT_HMAC_SHA256)
michael@0 56 SCTP_SHA256_CTX sha256;
michael@0 57 #endif
michael@0 58 } sctp_hash_context_t;
michael@0 59
michael@0 60 typedef struct sctp_key {
michael@0 61 uint32_t keylen;
michael@0 62 uint8_t key[];
michael@0 63 } sctp_key_t;
michael@0 64
michael@0 65 typedef struct sctp_shared_key {
michael@0 66 LIST_ENTRY(sctp_shared_key) next;
michael@0 67 sctp_key_t *key; /* key text */
michael@0 68 uint32_t refcount; /* reference count */
michael@0 69 uint16_t keyid; /* shared key ID */
michael@0 70 uint8_t deactivated; /* key is deactivated */
michael@0 71 } sctp_sharedkey_t;
michael@0 72
michael@0 73 LIST_HEAD(sctp_keyhead, sctp_shared_key);
michael@0 74
michael@0 75 /* authentication chunks list */
michael@0 76 typedef struct sctp_auth_chklist {
michael@0 77 uint8_t chunks[256];
michael@0 78 uint8_t num_chunks;
michael@0 79 } sctp_auth_chklist_t;
michael@0 80
michael@0 81 /* hmac algos supported list */
michael@0 82 typedef struct sctp_hmaclist {
michael@0 83 uint16_t max_algo; /* max algorithms allocated */
michael@0 84 uint16_t num_algo; /* num algorithms used */
michael@0 85 uint16_t hmac[];
michael@0 86 } sctp_hmaclist_t;
michael@0 87
michael@0 88 /* authentication info */
michael@0 89 typedef struct sctp_authinformation {
michael@0 90 sctp_key_t *random; /* local random key (concatenated) */
michael@0 91 uint32_t random_len; /* local random number length for param */
michael@0 92 sctp_key_t *peer_random;/* peer's random key (concatenated) */
michael@0 93 sctp_key_t *assoc_key; /* cached concatenated send key */
michael@0 94 sctp_key_t *recv_key; /* cached concatenated recv key */
michael@0 95 uint16_t active_keyid; /* active send keyid */
michael@0 96 uint16_t assoc_keyid; /* current send keyid (cached) */
michael@0 97 uint16_t recv_keyid; /* last recv keyid (cached) */
michael@0 98 } sctp_authinfo_t;
michael@0 99
michael@0 100
michael@0 101
michael@0 102 /*
michael@0 103 * Macros
michael@0 104 */
michael@0 105 #define sctp_auth_is_required_chunk(chunk, list) ((list == NULL) ? (0) : (list->chunks[chunk] != 0))
michael@0 106
michael@0 107 /*
michael@0 108 * function prototypes
michael@0 109 */
michael@0 110
michael@0 111 /* socket option api functions */
michael@0 112 extern sctp_auth_chklist_t *sctp_alloc_chunklist(void);
michael@0 113 extern void sctp_free_chunklist(sctp_auth_chklist_t *chklist);
michael@0 114 extern void sctp_clear_chunklist(sctp_auth_chklist_t *chklist);
michael@0 115 extern sctp_auth_chklist_t *sctp_copy_chunklist(sctp_auth_chklist_t *chklist);
michael@0 116 extern int sctp_auth_add_chunk(uint8_t chunk, sctp_auth_chklist_t *list);
michael@0 117 extern int sctp_auth_delete_chunk(uint8_t chunk, sctp_auth_chklist_t *list);
michael@0 118 extern size_t sctp_auth_get_chklist_size(const sctp_auth_chklist_t *list);
michael@0 119 extern void sctp_auth_set_default_chunks(sctp_auth_chklist_t *list);
michael@0 120 extern int sctp_serialize_auth_chunks(const sctp_auth_chklist_t *list,
michael@0 121 uint8_t *ptr);
michael@0 122 extern int sctp_pack_auth_chunks(const sctp_auth_chklist_t *list,
michael@0 123 uint8_t *ptr);
michael@0 124 extern int sctp_unpack_auth_chunks(const uint8_t *ptr, uint8_t num_chunks,
michael@0 125 sctp_auth_chklist_t *list);
michael@0 126
michael@0 127 /* key handling */
michael@0 128 extern sctp_key_t *sctp_alloc_key(uint32_t keylen);
michael@0 129 extern void sctp_free_key(sctp_key_t *key);
michael@0 130 extern void sctp_print_key(sctp_key_t *key, const char *str);
michael@0 131 extern void sctp_show_key(sctp_key_t *key, const char *str);
michael@0 132 extern sctp_key_t *sctp_generate_random_key(uint32_t keylen);
michael@0 133 extern sctp_key_t *sctp_set_key(uint8_t *key, uint32_t keylen);
michael@0 134 extern sctp_key_t *sctp_compute_hashkey(sctp_key_t *key1, sctp_key_t *key2,
michael@0 135 sctp_key_t *shared);
michael@0 136
michael@0 137 /* shared key handling */
michael@0 138 extern sctp_sharedkey_t *sctp_alloc_sharedkey(void);
michael@0 139 extern void sctp_free_sharedkey(sctp_sharedkey_t *skey);
michael@0 140 extern sctp_sharedkey_t *sctp_find_sharedkey(struct sctp_keyhead *shared_keys,
michael@0 141 uint16_t key_id);
michael@0 142 extern int sctp_insert_sharedkey(struct sctp_keyhead *shared_keys,
michael@0 143 sctp_sharedkey_t *new_skey);
michael@0 144 extern int sctp_copy_skeylist(const struct sctp_keyhead *src,
michael@0 145 struct sctp_keyhead *dest);
michael@0 146 /* ref counts on shared keys, by key id */
michael@0 147 extern void sctp_auth_key_acquire(struct sctp_tcb *stcb, uint16_t keyid);
michael@0 148 extern void sctp_auth_key_release(struct sctp_tcb *stcb, uint16_t keyid,
michael@0 149 int so_locked);
michael@0 150
michael@0 151
michael@0 152 /* hmac list handling */
michael@0 153 extern sctp_hmaclist_t *sctp_alloc_hmaclist(uint8_t num_hmacs);
michael@0 154 extern void sctp_free_hmaclist(sctp_hmaclist_t *list);
michael@0 155 extern int sctp_auth_add_hmacid(sctp_hmaclist_t *list, uint16_t hmac_id);
michael@0 156 extern sctp_hmaclist_t *sctp_copy_hmaclist(sctp_hmaclist_t *list);
michael@0 157 extern sctp_hmaclist_t *sctp_default_supported_hmaclist(void);
michael@0 158 extern uint16_t sctp_negotiate_hmacid(sctp_hmaclist_t *peer,
michael@0 159 sctp_hmaclist_t *local);
michael@0 160 extern int sctp_serialize_hmaclist(sctp_hmaclist_t *list, uint8_t *ptr);
michael@0 161 extern int sctp_verify_hmac_param(struct sctp_auth_hmac_algo *hmacs,
michael@0 162 uint32_t num_hmacs);
michael@0 163
michael@0 164 extern sctp_authinfo_t *sctp_alloc_authinfo(void);
michael@0 165 extern void sctp_free_authinfo(sctp_authinfo_t *authinfo);
michael@0 166
michael@0 167 /* keyed-HMAC functions */
michael@0 168 extern uint32_t sctp_get_auth_chunk_len(uint16_t hmac_algo);
michael@0 169 extern uint32_t sctp_get_hmac_digest_len(uint16_t hmac_algo);
michael@0 170 extern uint32_t sctp_hmac(uint16_t hmac_algo, uint8_t *key, uint32_t keylen,
michael@0 171 uint8_t *text, uint32_t textlen, uint8_t *digest);
michael@0 172 extern int sctp_verify_hmac(uint16_t hmac_algo, uint8_t *key, uint32_t keylen,
michael@0 173 uint8_t *text, uint32_t textlen, uint8_t *digest, uint32_t digestlen);
michael@0 174 extern uint32_t sctp_compute_hmac(uint16_t hmac_algo, sctp_key_t *key,
michael@0 175 uint8_t *text, uint32_t textlen, uint8_t *digest);
michael@0 176 extern int sctp_auth_is_supported_hmac(sctp_hmaclist_t *list, uint16_t id);
michael@0 177
michael@0 178 /* mbuf versions */
michael@0 179 extern uint32_t sctp_hmac_m(uint16_t hmac_algo, uint8_t *key, uint32_t keylen,
michael@0 180 struct mbuf *m, uint32_t m_offset, uint8_t *digest, uint32_t trailer);
michael@0 181 extern uint32_t sctp_compute_hmac_m(uint16_t hmac_algo, sctp_key_t *key,
michael@0 182 struct mbuf *m, uint32_t m_offset, uint8_t *digest);
michael@0 183
michael@0 184 /*
michael@0 185 * authentication routines
michael@0 186 */
michael@0 187 extern void sctp_clear_cachedkeys(struct sctp_tcb *stcb, uint16_t keyid);
michael@0 188 extern void sctp_clear_cachedkeys_ep(struct sctp_inpcb *inp, uint16_t keyid);
michael@0 189 extern int sctp_delete_sharedkey(struct sctp_tcb *stcb, uint16_t keyid);
michael@0 190 extern int sctp_delete_sharedkey_ep(struct sctp_inpcb *inp, uint16_t keyid);
michael@0 191 extern int sctp_auth_setactivekey(struct sctp_tcb *stcb, uint16_t keyid);
michael@0 192 extern int sctp_auth_setactivekey_ep(struct sctp_inpcb *inp, uint16_t keyid);
michael@0 193 extern int sctp_deact_sharedkey(struct sctp_tcb *stcb, uint16_t keyid);
michael@0 194 extern int sctp_deact_sharedkey_ep(struct sctp_inpcb *inp, uint16_t keyid);
michael@0 195
michael@0 196 extern void sctp_auth_get_cookie_params(struct sctp_tcb *stcb, struct mbuf *m,
michael@0 197 uint32_t offset, uint32_t length);
michael@0 198 extern void sctp_fill_hmac_digest_m(struct mbuf *m, uint32_t auth_offset,
michael@0 199 struct sctp_auth_chunk *auth, struct sctp_tcb *stcb, uint16_t key_id);
michael@0 200 extern struct mbuf *sctp_add_auth_chunk(struct mbuf *m, struct mbuf **m_end,
michael@0 201 struct sctp_auth_chunk **auth_ret, uint32_t *offset,
michael@0 202 struct sctp_tcb *stcb, uint8_t chunk);
michael@0 203 extern int sctp_handle_auth(struct sctp_tcb *stcb, struct sctp_auth_chunk *ch,
michael@0 204 struct mbuf *m, uint32_t offset);
michael@0 205 extern void sctp_notify_authentication(struct sctp_tcb *stcb,
michael@0 206 uint32_t indication, uint16_t keyid, uint16_t alt_keyid, int so_locked);
michael@0 207 extern int sctp_validate_init_auth_params(struct mbuf *m, int offset,
michael@0 208 int limit);
michael@0 209 extern void sctp_initialize_auth_params(struct sctp_inpcb *inp,
michael@0 210 struct sctp_tcb *stcb);
michael@0 211
michael@0 212 /* test functions */
michael@0 213 #ifdef SCTP_HMAC_TEST
michael@0 214 extern void sctp_test_hmac_sha1(void);
michael@0 215 extern void sctp_test_authkey(void);
michael@0 216 #endif
michael@0 217 #endif /* __SCTP_AUTH_H__ */

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