ssl3.h 25 KB

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  1. /* ssl/ssl3.h */
  2. /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
  3. * All rights reserved.
  4. *
  5. * This package is an SSL implementation written
  6. * by Eric Young (eay@cryptsoft.com).
  7. * The implementation was written so as to conform with Netscapes SSL.
  8. *
  9. * This library is free for commercial and non-commercial use as long as
  10. * the following conditions are aheared to. The following conditions
  11. * apply to all code found in this distribution, be it the RC4, RSA,
  12. * lhash, DES, etc., code; not just the SSL code. The SSL documentation
  13. * included with this distribution is covered by the same copyright terms
  14. * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  15. *
  16. * Copyright remains Eric Young's, and as such any Copyright notices in
  17. * the code are not to be removed.
  18. * If this package is used in a product, Eric Young should be given attribution
  19. * as the author of the parts of the library used.
  20. * This can be in the form of a textual message at program startup or
  21. * in documentation (online or textual) provided with the package.
  22. *
  23. * Redistribution and use in source and binary forms, with or without
  24. * modification, are permitted provided that the following conditions
  25. * are met:
  26. * 1. Redistributions of source code must retain the copyright
  27. * notice, this list of conditions and the following disclaimer.
  28. * 2. Redistributions in binary form must reproduce the above copyright
  29. * notice, this list of conditions and the following disclaimer in the
  30. * documentation and/or other materials provided with the distribution.
  31. * 3. All advertising materials mentioning features or use of this software
  32. * must display the following acknowledgement:
  33. * "This product includes cryptographic software written by
  34. * Eric Young (eay@cryptsoft.com)"
  35. * The word 'cryptographic' can be left out if the rouines from the library
  36. * being used are not cryptographic related :-).
  37. * 4. If you include any Windows specific code (or a derivative thereof) from
  38. * the apps directory (application code) you must include an acknowledgement:
  39. * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  40. *
  41. * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  42. * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  43. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  44. * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  45. * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  46. * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  47. * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  48. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  49. * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  50. * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  51. * SUCH DAMAGE.
  52. *
  53. * The licence and distribution terms for any publically available version or
  54. * derivative of this code cannot be changed. i.e. this code cannot simply be
  55. * copied and put under another distribution licence
  56. * [including the GNU Public Licence.]
  57. */
  58. /* ====================================================================
  59. * Copyright (c) 1998-2002 The OpenSSL Project. All rights reserved.
  60. *
  61. * Redistribution and use in source and binary forms, with or without
  62. * modification, are permitted provided that the following conditions
  63. * are met:
  64. *
  65. * 1. Redistributions of source code must retain the above copyright
  66. * notice, this list of conditions and the following disclaimer.
  67. *
  68. * 2. Redistributions in binary form must reproduce the above copyright
  69. * notice, this list of conditions and the following disclaimer in
  70. * the documentation and/or other materials provided with the
  71. * distribution.
  72. *
  73. * 3. All advertising materials mentioning features or use of this
  74. * software must display the following acknowledgment:
  75. * "This product includes software developed by the OpenSSL Project
  76. * for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
  77. *
  78. * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  79. * endorse or promote products derived from this software without
  80. * prior written permission. For written permission, please contact
  81. * openssl-core@openssl.org.
  82. *
  83. * 5. Products derived from this software may not be called "OpenSSL"
  84. * nor may "OpenSSL" appear in their names without prior written
  85. * permission of the OpenSSL Project.
  86. *
  87. * 6. Redistributions of any form whatsoever must retain the following
  88. * acknowledgment:
  89. * "This product includes software developed by the OpenSSL Project
  90. * for use in the OpenSSL Toolkit (http://www.openssl.org/)"
  91. *
  92. * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  93. * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  94. * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  95. * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
  96. * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  97. * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  98. * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  99. * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  100. * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  101. * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  102. * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  103. * OF THE POSSIBILITY OF SUCH DAMAGE.
  104. * ====================================================================
  105. *
  106. * This product includes cryptographic software written by Eric Young
  107. * (eay@cryptsoft.com). This product includes software written by Tim
  108. * Hudson (tjh@cryptsoft.com).
  109. *
  110. */
  111. /* ====================================================================
  112. * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
  113. * ECC cipher suite support in OpenSSL originally developed by
  114. * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
  115. */
  116. #ifndef HEADER_SSL3_H
  117. #define HEADER_SSL3_H
  118. #ifndef OPENSSL_NO_COMP
  119. #include <openssl/comp.h>
  120. #endif
  121. #include <openssl/buffer.h>
  122. #include <openssl/evp.h>
  123. #include <openssl/ssl.h>
  124. #ifdef __cplusplus
  125. extern "C" {
  126. #endif
  127. /* Signalling cipher suite value: from draft-ietf-tls-renegotiation-03.txt */
  128. #define SSL3_CK_SCSV 0x030000FF
  129. #define SSL3_CK_RSA_NULL_MD5 0x03000001
  130. #define SSL3_CK_RSA_NULL_SHA 0x03000002
  131. #define SSL3_CK_RSA_RC4_40_MD5 0x03000003
  132. #define SSL3_CK_RSA_RC4_128_MD5 0x03000004
  133. #define SSL3_CK_RSA_RC4_128_SHA 0x03000005
  134. #define SSL3_CK_RSA_RC2_40_MD5 0x03000006
  135. #define SSL3_CK_RSA_IDEA_128_SHA 0x03000007
  136. #define SSL3_CK_RSA_DES_40_CBC_SHA 0x03000008
  137. #define SSL3_CK_RSA_DES_64_CBC_SHA 0x03000009
  138. #define SSL3_CK_RSA_DES_192_CBC3_SHA 0x0300000A
  139. #define SSL3_CK_DH_DSS_DES_40_CBC_SHA 0x0300000B
  140. #define SSL3_CK_DH_DSS_DES_64_CBC_SHA 0x0300000C
  141. #define SSL3_CK_DH_DSS_DES_192_CBC3_SHA 0x0300000D
  142. #define SSL3_CK_DH_RSA_DES_40_CBC_SHA 0x0300000E
  143. #define SSL3_CK_DH_RSA_DES_64_CBC_SHA 0x0300000F
  144. #define SSL3_CK_DH_RSA_DES_192_CBC3_SHA 0x03000010
  145. #define SSL3_CK_EDH_DSS_DES_40_CBC_SHA 0x03000011
  146. #define SSL3_CK_EDH_DSS_DES_64_CBC_SHA 0x03000012
  147. #define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA 0x03000013
  148. #define SSL3_CK_EDH_RSA_DES_40_CBC_SHA 0x03000014
  149. #define SSL3_CK_EDH_RSA_DES_64_CBC_SHA 0x03000015
  150. #define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA 0x03000016
  151. #define SSL3_CK_ADH_RC4_40_MD5 0x03000017
  152. #define SSL3_CK_ADH_RC4_128_MD5 0x03000018
  153. #define SSL3_CK_ADH_DES_40_CBC_SHA 0x03000019
  154. #define SSL3_CK_ADH_DES_64_CBC_SHA 0x0300001A
  155. #define SSL3_CK_ADH_DES_192_CBC_SHA 0x0300001B
  156. #if 0
  157. #define SSL3_CK_FZA_DMS_NULL_SHA 0x0300001C
  158. #define SSL3_CK_FZA_DMS_FZA_SHA 0x0300001D
  159. #if 0 /* Because it clashes with KRB5, is never used any more, and is safe
  160. to remove according to David Hopwood <david.hopwood@zetnet.co.uk>
  161. of the ietf-tls list */
  162. #define SSL3_CK_FZA_DMS_RC4_SHA 0x0300001E
  163. #endif
  164. #endif
  165. /* VRS Additional Kerberos5 entries
  166. */
  167. #define SSL3_CK_KRB5_DES_64_CBC_SHA 0x0300001E
  168. #define SSL3_CK_KRB5_DES_192_CBC3_SHA 0x0300001F
  169. #define SSL3_CK_KRB5_RC4_128_SHA 0x03000020
  170. #define SSL3_CK_KRB5_IDEA_128_CBC_SHA 0x03000021
  171. #define SSL3_CK_KRB5_DES_64_CBC_MD5 0x03000022
  172. #define SSL3_CK_KRB5_DES_192_CBC3_MD5 0x03000023
  173. #define SSL3_CK_KRB5_RC4_128_MD5 0x03000024
  174. #define SSL3_CK_KRB5_IDEA_128_CBC_MD5 0x03000025
  175. #define SSL3_CK_KRB5_DES_40_CBC_SHA 0x03000026
  176. #define SSL3_CK_KRB5_RC2_40_CBC_SHA 0x03000027
  177. #define SSL3_CK_KRB5_RC4_40_SHA 0x03000028
  178. #define SSL3_CK_KRB5_DES_40_CBC_MD5 0x03000029
  179. #define SSL3_CK_KRB5_RC2_40_CBC_MD5 0x0300002A
  180. #define SSL3_CK_KRB5_RC4_40_MD5 0x0300002B
  181. #define SSL3_TXT_RSA_NULL_MD5 "NULL-MD5"
  182. #define SSL3_TXT_RSA_NULL_SHA "NULL-SHA"
  183. #define SSL3_TXT_RSA_RC4_40_MD5 "EXP-RC4-MD5"
  184. #define SSL3_TXT_RSA_RC4_128_MD5 "RC4-MD5"
  185. #define SSL3_TXT_RSA_RC4_128_SHA "RC4-SHA"
  186. #define SSL3_TXT_RSA_RC2_40_MD5 "EXP-RC2-CBC-MD5"
  187. #define SSL3_TXT_RSA_IDEA_128_SHA "IDEA-CBC-SHA"
  188. #define SSL3_TXT_RSA_DES_40_CBC_SHA "EXP-DES-CBC-SHA"
  189. #define SSL3_TXT_RSA_DES_64_CBC_SHA "DES-CBC-SHA"
  190. #define SSL3_TXT_RSA_DES_192_CBC3_SHA "DES-CBC3-SHA"
  191. #define SSL3_TXT_DH_DSS_DES_40_CBC_SHA "EXP-DH-DSS-DES-CBC-SHA"
  192. #define SSL3_TXT_DH_DSS_DES_64_CBC_SHA "DH-DSS-DES-CBC-SHA"
  193. #define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA "DH-DSS-DES-CBC3-SHA"
  194. #define SSL3_TXT_DH_RSA_DES_40_CBC_SHA "EXP-DH-RSA-DES-CBC-SHA"
  195. #define SSL3_TXT_DH_RSA_DES_64_CBC_SHA "DH-RSA-DES-CBC-SHA"
  196. #define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA "DH-RSA-DES-CBC3-SHA"
  197. #define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA "EXP-EDH-DSS-DES-CBC-SHA"
  198. #define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA "EDH-DSS-DES-CBC-SHA"
  199. #define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA "EDH-DSS-DES-CBC3-SHA"
  200. #define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA "EXP-EDH-RSA-DES-CBC-SHA"
  201. #define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA "EDH-RSA-DES-CBC-SHA"
  202. #define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA "EDH-RSA-DES-CBC3-SHA"
  203. #define SSL3_TXT_ADH_RC4_40_MD5 "EXP-ADH-RC4-MD5"
  204. #define SSL3_TXT_ADH_RC4_128_MD5 "ADH-RC4-MD5"
  205. #define SSL3_TXT_ADH_DES_40_CBC_SHA "EXP-ADH-DES-CBC-SHA"
  206. #define SSL3_TXT_ADH_DES_64_CBC_SHA "ADH-DES-CBC-SHA"
  207. #define SSL3_TXT_ADH_DES_192_CBC_SHA "ADH-DES-CBC3-SHA"
  208. #if 0
  209. #define SSL3_TXT_FZA_DMS_NULL_SHA "FZA-NULL-SHA"
  210. #define SSL3_TXT_FZA_DMS_FZA_SHA "FZA-FZA-CBC-SHA"
  211. #define SSL3_TXT_FZA_DMS_RC4_SHA "FZA-RC4-SHA"
  212. #endif
  213. #define SSL3_TXT_KRB5_DES_64_CBC_SHA "KRB5-DES-CBC-SHA"
  214. #define SSL3_TXT_KRB5_DES_192_CBC3_SHA "KRB5-DES-CBC3-SHA"
  215. #define SSL3_TXT_KRB5_RC4_128_SHA "KRB5-RC4-SHA"
  216. #define SSL3_TXT_KRB5_IDEA_128_CBC_SHA "KRB5-IDEA-CBC-SHA"
  217. #define SSL3_TXT_KRB5_DES_64_CBC_MD5 "KRB5-DES-CBC-MD5"
  218. #define SSL3_TXT_KRB5_DES_192_CBC3_MD5 "KRB5-DES-CBC3-MD5"
  219. #define SSL3_TXT_KRB5_RC4_128_MD5 "KRB5-RC4-MD5"
  220. #define SSL3_TXT_KRB5_IDEA_128_CBC_MD5 "KRB5-IDEA-CBC-MD5"
  221. #define SSL3_TXT_KRB5_DES_40_CBC_SHA "EXP-KRB5-DES-CBC-SHA"
  222. #define SSL3_TXT_KRB5_RC2_40_CBC_SHA "EXP-KRB5-RC2-CBC-SHA"
  223. #define SSL3_TXT_KRB5_RC4_40_SHA "EXP-KRB5-RC4-SHA"
  224. #define SSL3_TXT_KRB5_DES_40_CBC_MD5 "EXP-KRB5-DES-CBC-MD5"
  225. #define SSL3_TXT_KRB5_RC2_40_CBC_MD5 "EXP-KRB5-RC2-CBC-MD5"
  226. #define SSL3_TXT_KRB5_RC4_40_MD5 "EXP-KRB5-RC4-MD5"
  227. #define SSL3_SSL_SESSION_ID_LENGTH 32
  228. #define SSL3_MAX_SSL_SESSION_ID_LENGTH 32
  229. #define SSL3_MASTER_SECRET_SIZE 48
  230. #define SSL3_RANDOM_SIZE 32
  231. #define SSL3_SESSION_ID_SIZE 32
  232. #define SSL3_RT_HEADER_LENGTH 5
  233. #ifndef SSL3_ALIGN_PAYLOAD
  234. /* Some will argue that this increases memory footprint, but it's
  235. * not actually true. Point is that malloc has to return at least
  236. * 64-bit aligned pointers, meaning that allocating 5 bytes wastes
  237. * 3 bytes in either case. Suggested pre-gaping simply moves these
  238. * wasted bytes from the end of allocated region to its front,
  239. * but makes data payload aligned, which improves performance:-) */
  240. # define SSL3_ALIGN_PAYLOAD 8
  241. #else
  242. # if (SSL3_ALIGN_PAYLOAD&(SSL3_ALIGN_PAYLOAD-1))!=0
  243. # error "insane SSL3_ALIGN_PAYLOAD"
  244. # undef SSL3_ALIGN_PAYLOAD
  245. # endif
  246. #endif
  247. /* This is the maximum MAC (digest) size used by the SSL library.
  248. * Currently maximum of 20 is used by SHA1, but we reserve for
  249. * future extension for 512-bit hashes.
  250. */
  251. #define SSL3_RT_MAX_MD_SIZE 64
  252. /* Maximum block size used in all ciphersuites. Currently 16 for AES.
  253. */
  254. #define SSL_RT_MAX_CIPHER_BLOCK_SIZE 16
  255. #define SSL3_RT_MAX_EXTRA (16384)
  256. /* Maximum plaintext length: defined by SSL/TLS standards */
  257. #define SSL3_RT_MAX_PLAIN_LENGTH 16384
  258. /* Maximum compression overhead: defined by SSL/TLS standards */
  259. #define SSL3_RT_MAX_COMPRESSED_OVERHEAD 1024
  260. /* The standards give a maximum encryption overhead of 1024 bytes.
  261. * In practice the value is lower than this. The overhead is the maximum
  262. * number of padding bytes (256) plus the mac size.
  263. */
  264. #define SSL3_RT_MAX_ENCRYPTED_OVERHEAD (256 + SSL3_RT_MAX_MD_SIZE)
  265. /* OpenSSL currently only uses a padding length of at most one block so
  266. * the send overhead is smaller.
  267. */
  268. #define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \
  269. (SSL_RT_MAX_CIPHER_BLOCK_SIZE + SSL3_RT_MAX_MD_SIZE)
  270. /* If compression isn't used don't include the compression overhead */
  271. #ifdef OPENSSL_NO_COMP
  272. #define SSL3_RT_MAX_COMPRESSED_LENGTH SSL3_RT_MAX_PLAIN_LENGTH
  273. #else
  274. #define SSL3_RT_MAX_COMPRESSED_LENGTH \
  275. (SSL3_RT_MAX_PLAIN_LENGTH+SSL3_RT_MAX_COMPRESSED_OVERHEAD)
  276. #endif
  277. #define SSL3_RT_MAX_ENCRYPTED_LENGTH \
  278. (SSL3_RT_MAX_ENCRYPTED_OVERHEAD+SSL3_RT_MAX_COMPRESSED_LENGTH)
  279. #define SSL3_RT_MAX_PACKET_SIZE \
  280. (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH)
  281. #define SSL3_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54"
  282. #define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52"
  283. #define SSL3_VERSION 0x0300
  284. #define SSL3_VERSION_MAJOR 0x03
  285. #define SSL3_VERSION_MINOR 0x00
  286. #define SSL3_RT_CHANGE_CIPHER_SPEC 20
  287. #define SSL3_RT_ALERT 21
  288. #define SSL3_RT_HANDSHAKE 22
  289. #define SSL3_RT_APPLICATION_DATA 23
  290. #define SSL3_AL_WARNING 1
  291. #define SSL3_AL_FATAL 2
  292. #define SSL3_AD_CLOSE_NOTIFY 0
  293. #define SSL3_AD_UNEXPECTED_MESSAGE 10 /* fatal */
  294. #define SSL3_AD_BAD_RECORD_MAC 20 /* fatal */
  295. #define SSL3_AD_DECOMPRESSION_FAILURE 30 /* fatal */
  296. #define SSL3_AD_HANDSHAKE_FAILURE 40 /* fatal */
  297. #define SSL3_AD_NO_CERTIFICATE 41
  298. #define SSL3_AD_BAD_CERTIFICATE 42
  299. #define SSL3_AD_UNSUPPORTED_CERTIFICATE 43
  300. #define SSL3_AD_CERTIFICATE_REVOKED 44
  301. #define SSL3_AD_CERTIFICATE_EXPIRED 45
  302. #define SSL3_AD_CERTIFICATE_UNKNOWN 46
  303. #define SSL3_AD_ILLEGAL_PARAMETER 47 /* fatal */
  304. typedef struct ssl3_record_st
  305. {
  306. /*r */ int type; /* type of record */
  307. /*rw*/ unsigned int length; /* How many bytes available */
  308. /*r */ unsigned int off; /* read/write offset into 'buf' */
  309. /*rw*/ unsigned char *data; /* pointer to the record data */
  310. /*rw*/ unsigned char *input; /* where the decode bytes are */
  311. /*r */ unsigned char *comp; /* only used with decompression - malloc()ed */
  312. /*r */ unsigned long epoch; /* epoch number, needed by DTLS1 */
  313. /*r */ unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */
  314. } SSL3_RECORD;
  315. typedef struct ssl3_buffer_st
  316. {
  317. unsigned char *buf; /* at least SSL3_RT_MAX_PACKET_SIZE bytes,
  318. * see ssl3_setup_buffers() */
  319. size_t len; /* buffer size */
  320. int offset; /* where to 'copy from' */
  321. int left; /* how many bytes left */
  322. } SSL3_BUFFER;
  323. #define SSL3_CT_RSA_SIGN 1
  324. #define SSL3_CT_DSS_SIGN 2
  325. #define SSL3_CT_RSA_FIXED_DH 3
  326. #define SSL3_CT_DSS_FIXED_DH 4
  327. #define SSL3_CT_RSA_EPHEMERAL_DH 5
  328. #define SSL3_CT_DSS_EPHEMERAL_DH 6
  329. #define SSL3_CT_FORTEZZA_DMS 20
  330. /* SSL3_CT_NUMBER is used to size arrays and it must be large
  331. * enough to contain all of the cert types defined either for
  332. * SSLv3 and TLSv1.
  333. */
  334. #define SSL3_CT_NUMBER 9
  335. #define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS 0x0001
  336. #define SSL3_FLAGS_DELAY_CLIENT_FINISHED 0x0002
  337. #define SSL3_FLAGS_POP_BUFFER 0x0004
  338. #define TLS1_FLAGS_TLS_PADDING_BUG 0x0008
  339. #define TLS1_FLAGS_SKIP_CERT_VERIFY 0x0010
  340. typedef struct ssl3_state_st
  341. {
  342. long flags;
  343. int delay_buf_pop_ret;
  344. unsigned char read_sequence[8];
  345. int read_mac_secret_size;
  346. unsigned char read_mac_secret[EVP_MAX_MD_SIZE];
  347. unsigned char write_sequence[8];
  348. int write_mac_secret_size;
  349. unsigned char write_mac_secret[EVP_MAX_MD_SIZE];
  350. unsigned char server_random[SSL3_RANDOM_SIZE];
  351. unsigned char client_random[SSL3_RANDOM_SIZE];
  352. /* flags for countermeasure against known-IV weakness */
  353. int need_empty_fragments;
  354. int empty_fragment_done;
  355. /* The value of 'extra' when the buffers were initialized */
  356. int init_extra;
  357. SSL3_BUFFER rbuf; /* read IO goes into here */
  358. SSL3_BUFFER wbuf; /* write IO goes into here */
  359. SSL3_RECORD rrec; /* each decoded record goes in here */
  360. SSL3_RECORD wrec; /* goes out from here */
  361. /* storage for Alert/Handshake protocol data received but not
  362. * yet processed by ssl3_read_bytes: */
  363. unsigned char alert_fragment[2];
  364. unsigned int alert_fragment_len;
  365. unsigned char handshake_fragment[4];
  366. unsigned int handshake_fragment_len;
  367. /* partial write - check the numbers match */
  368. unsigned int wnum; /* number of bytes sent so far */
  369. int wpend_tot; /* number bytes written */
  370. int wpend_type;
  371. int wpend_ret; /* number of bytes submitted */
  372. const unsigned char *wpend_buf;
  373. /* used during startup, digest all incoming/outgoing packets */
  374. BIO *handshake_buffer;
  375. /* When set of handshake digests is determined, buffer is hashed
  376. * and freed and MD_CTX-es for all required digests are stored in
  377. * this array */
  378. EVP_MD_CTX **handshake_dgst;
  379. /* this is set whenerver we see a change_cipher_spec message
  380. * come in when we are not looking for one */
  381. int change_cipher_spec;
  382. int warn_alert;
  383. int fatal_alert;
  384. /* we allow one fatal and one warning alert to be outstanding,
  385. * send close alert via the warning alert */
  386. int alert_dispatch;
  387. unsigned char send_alert[2];
  388. /* This flag is set when we should renegotiate ASAP, basically when
  389. * there is no more data in the read or write buffers */
  390. int renegotiate;
  391. int total_renegotiations;
  392. int num_renegotiations;
  393. int in_read_app_data;
  394. /* Opaque PRF input as used for the current handshake.
  395. * These fields are used only if TLSEXT_TYPE_opaque_prf_input is defined
  396. * (otherwise, they are merely present to improve binary compatibility) */
  397. void *client_opaque_prf_input;
  398. size_t client_opaque_prf_input_len;
  399. void *server_opaque_prf_input;
  400. size_t server_opaque_prf_input_len;
  401. #ifndef OPENSSL_NO_NEXTPROTONEG
  402. /* Set if we saw the Next Protocol Negotiation extension from
  403. our peer. */
  404. int next_proto_neg_seen;
  405. #endif
  406. struct {
  407. /* actually only needs to be 16+20 */
  408. unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2];
  409. /* actually only need to be 16+20 for SSLv3 and 12 for TLS */
  410. unsigned char finish_md[EVP_MAX_MD_SIZE*2];
  411. int finish_md_len;
  412. unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2];
  413. int peer_finish_md_len;
  414. unsigned long message_size;
  415. int message_type;
  416. /* used to hold the new cipher we are going to use */
  417. const SSL_CIPHER *new_cipher;
  418. #ifndef OPENSSL_NO_DH
  419. DH *dh;
  420. #endif
  421. #ifndef OPENSSL_NO_ECDH
  422. EC_KEY *ecdh; /* holds short lived ECDH key */
  423. #endif
  424. /* used when SSL_ST_FLUSH_DATA is entered */
  425. int next_state;
  426. int reuse_message;
  427. /* used for certificate requests */
  428. int cert_req;
  429. int ctype_num;
  430. char ctype[SSL3_CT_NUMBER];
  431. STACK_OF(X509_NAME) *ca_names;
  432. int use_rsa_tmp;
  433. int key_block_length;
  434. unsigned char *key_block;
  435. const EVP_CIPHER *new_sym_enc;
  436. const EVP_MD *new_hash;
  437. int new_mac_pkey_type;
  438. int new_mac_secret_size;
  439. #ifndef OPENSSL_NO_COMP
  440. const SSL_COMP *new_compression;
  441. #else
  442. char *new_compression;
  443. #endif
  444. int cert_request;
  445. } tmp;
  446. /* Connection binding to prevent renegotiation attacks */
  447. unsigned char previous_client_finished[EVP_MAX_MD_SIZE];
  448. unsigned char previous_client_finished_len;
  449. unsigned char previous_server_finished[EVP_MAX_MD_SIZE];
  450. unsigned char previous_server_finished_len;
  451. int send_connection_binding; /* TODOEKR */
  452. } SSL3_STATE;
  453. /* SSLv3 */
  454. /*client */
  455. /* extra state */
  456. #define SSL3_ST_CW_FLUSH (0x100|SSL_ST_CONNECT)
  457. /* write to server */
  458. #define SSL3_ST_CW_CLNT_HELLO_A (0x110|SSL_ST_CONNECT)
  459. #define SSL3_ST_CW_CLNT_HELLO_B (0x111|SSL_ST_CONNECT)
  460. /* read from server */
  461. #define SSL3_ST_CR_SRVR_HELLO_A (0x120|SSL_ST_CONNECT)
  462. #define SSL3_ST_CR_SRVR_HELLO_B (0x121|SSL_ST_CONNECT)
  463. #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126|SSL_ST_CONNECT)
  464. #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127|SSL_ST_CONNECT)
  465. #define SSL3_ST_CR_CERT_A (0x130|SSL_ST_CONNECT)
  466. #define SSL3_ST_CR_CERT_B (0x131|SSL_ST_CONNECT)
  467. #define SSL3_ST_CR_KEY_EXCH_A (0x140|SSL_ST_CONNECT)
  468. #define SSL3_ST_CR_KEY_EXCH_B (0x141|SSL_ST_CONNECT)
  469. #define SSL3_ST_CR_CERT_REQ_A (0x150|SSL_ST_CONNECT)
  470. #define SSL3_ST_CR_CERT_REQ_B (0x151|SSL_ST_CONNECT)
  471. #define SSL3_ST_CR_SRVR_DONE_A (0x160|SSL_ST_CONNECT)
  472. #define SSL3_ST_CR_SRVR_DONE_B (0x161|SSL_ST_CONNECT)
  473. /* write to server */
  474. #define SSL3_ST_CW_CERT_A (0x170|SSL_ST_CONNECT)
  475. #define SSL3_ST_CW_CERT_B (0x171|SSL_ST_CONNECT)
  476. #define SSL3_ST_CW_CERT_C (0x172|SSL_ST_CONNECT)
  477. #define SSL3_ST_CW_CERT_D (0x173|SSL_ST_CONNECT)
  478. #define SSL3_ST_CW_KEY_EXCH_A (0x180|SSL_ST_CONNECT)
  479. #define SSL3_ST_CW_KEY_EXCH_B (0x181|SSL_ST_CONNECT)
  480. #define SSL3_ST_CW_CERT_VRFY_A (0x190|SSL_ST_CONNECT)
  481. #define SSL3_ST_CW_CERT_VRFY_B (0x191|SSL_ST_CONNECT)
  482. #define SSL3_ST_CW_CHANGE_A (0x1A0|SSL_ST_CONNECT)
  483. #define SSL3_ST_CW_CHANGE_B (0x1A1|SSL_ST_CONNECT)
  484. #ifndef OPENSSL_NO_NEXTPROTONEG
  485. #define SSL3_ST_CW_NEXT_PROTO_A (0x200|SSL_ST_CONNECT)
  486. #define SSL3_ST_CW_NEXT_PROTO_B (0x201|SSL_ST_CONNECT)
  487. #endif
  488. #define SSL3_ST_CW_FINISHED_A (0x1B0|SSL_ST_CONNECT)
  489. #define SSL3_ST_CW_FINISHED_B (0x1B1|SSL_ST_CONNECT)
  490. /* read from server */
  491. #define SSL3_ST_CR_CHANGE_A (0x1C0|SSL_ST_CONNECT)
  492. #define SSL3_ST_CR_CHANGE_B (0x1C1|SSL_ST_CONNECT)
  493. #define SSL3_ST_CR_FINISHED_A (0x1D0|SSL_ST_CONNECT)
  494. #define SSL3_ST_CR_FINISHED_B (0x1D1|SSL_ST_CONNECT)
  495. #define SSL3_ST_CR_SESSION_TICKET_A (0x1E0|SSL_ST_CONNECT)
  496. #define SSL3_ST_CR_SESSION_TICKET_B (0x1E1|SSL_ST_CONNECT)
  497. #define SSL3_ST_CR_CERT_STATUS_A (0x1F0|SSL_ST_CONNECT)
  498. #define SSL3_ST_CR_CERT_STATUS_B (0x1F1|SSL_ST_CONNECT)
  499. /* server */
  500. /* extra state */
  501. #define SSL3_ST_SW_FLUSH (0x100|SSL_ST_ACCEPT)
  502. /* read from client */
  503. /* Do not change the number values, they do matter */
  504. #define SSL3_ST_SR_CLNT_HELLO_A (0x110|SSL_ST_ACCEPT)
  505. #define SSL3_ST_SR_CLNT_HELLO_B (0x111|SSL_ST_ACCEPT)
  506. #define SSL3_ST_SR_CLNT_HELLO_C (0x112|SSL_ST_ACCEPT)
  507. /* a new state to remember that we have already receive a ClientHello without srp username extension */
  508. #define SSL3_ST_SR_CLNT_HELLO_SRP_USERNAME (0x1E2|SSL_ST_ACCEPT)
  509. /* write to client */
  510. #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A (0x113|SSL_ST_ACCEPT)
  511. #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B (0x114|SSL_ST_ACCEPT)
  512. #define SSL3_ST_SW_HELLO_REQ_A (0x120|SSL_ST_ACCEPT)
  513. #define SSL3_ST_SW_HELLO_REQ_B (0x121|SSL_ST_ACCEPT)
  514. #define SSL3_ST_SW_HELLO_REQ_C (0x122|SSL_ST_ACCEPT)
  515. #define SSL3_ST_SW_SRVR_HELLO_A (0x130|SSL_ST_ACCEPT)
  516. #define SSL3_ST_SW_SRVR_HELLO_B (0x131|SSL_ST_ACCEPT)
  517. #define SSL3_ST_SW_CERT_A (0x140|SSL_ST_ACCEPT)
  518. #define SSL3_ST_SW_CERT_B (0x141|SSL_ST_ACCEPT)
  519. #define SSL3_ST_SW_KEY_EXCH_A (0x150|SSL_ST_ACCEPT)
  520. #define SSL3_ST_SW_KEY_EXCH_B (0x151|SSL_ST_ACCEPT)
  521. #define SSL3_ST_SW_CERT_REQ_A (0x160|SSL_ST_ACCEPT)
  522. #define SSL3_ST_SW_CERT_REQ_B (0x161|SSL_ST_ACCEPT)
  523. #define SSL3_ST_SW_SRVR_DONE_A (0x170|SSL_ST_ACCEPT)
  524. #define SSL3_ST_SW_SRVR_DONE_B (0x171|SSL_ST_ACCEPT)
  525. /* read from client */
  526. #define SSL3_ST_SR_CERT_A (0x180|SSL_ST_ACCEPT)
  527. #define SSL3_ST_SR_CERT_B (0x181|SSL_ST_ACCEPT)
  528. #define SSL3_ST_SR_KEY_EXCH_A (0x190|SSL_ST_ACCEPT)
  529. #define SSL3_ST_SR_KEY_EXCH_B (0x191|SSL_ST_ACCEPT)
  530. #define SSL3_ST_SR_CERT_VRFY_A (0x1A0|SSL_ST_ACCEPT)
  531. #define SSL3_ST_SR_CERT_VRFY_B (0x1A1|SSL_ST_ACCEPT)
  532. #define SSL3_ST_SR_CHANGE_A (0x1B0|SSL_ST_ACCEPT)
  533. #define SSL3_ST_SR_CHANGE_B (0x1B1|SSL_ST_ACCEPT)
  534. #ifndef OPENSSL_NO_NEXTPROTONEG
  535. #define SSL3_ST_SR_NEXT_PROTO_A (0x210|SSL_ST_ACCEPT)
  536. #define SSL3_ST_SR_NEXT_PROTO_B (0x211|SSL_ST_ACCEPT)
  537. #endif
  538. #define SSL3_ST_SR_FINISHED_A (0x1C0|SSL_ST_ACCEPT)
  539. #define SSL3_ST_SR_FINISHED_B (0x1C1|SSL_ST_ACCEPT)
  540. /* write to client */
  541. #define SSL3_ST_SW_CHANGE_A (0x1D0|SSL_ST_ACCEPT)
  542. #define SSL3_ST_SW_CHANGE_B (0x1D1|SSL_ST_ACCEPT)
  543. #define SSL3_ST_SW_FINISHED_A (0x1E0|SSL_ST_ACCEPT)
  544. #define SSL3_ST_SW_FINISHED_B (0x1E1|SSL_ST_ACCEPT)
  545. #define SSL3_ST_SW_SESSION_TICKET_A (0x1F0|SSL_ST_ACCEPT)
  546. #define SSL3_ST_SW_SESSION_TICKET_B (0x1F1|SSL_ST_ACCEPT)
  547. #define SSL3_ST_SW_CERT_STATUS_A (0x200|SSL_ST_ACCEPT)
  548. #define SSL3_ST_SW_CERT_STATUS_B (0x201|SSL_ST_ACCEPT)
  549. #define SSL3_MT_HELLO_REQUEST 0
  550. #define SSL3_MT_CLIENT_HELLO 1
  551. #define SSL3_MT_SERVER_HELLO 2
  552. #define SSL3_MT_NEWSESSION_TICKET 4
  553. #define SSL3_MT_CERTIFICATE 11
  554. #define SSL3_MT_SERVER_KEY_EXCHANGE 12
  555. #define SSL3_MT_CERTIFICATE_REQUEST 13
  556. #define SSL3_MT_SERVER_DONE 14
  557. #define SSL3_MT_CERTIFICATE_VERIFY 15
  558. #define SSL3_MT_CLIENT_KEY_EXCHANGE 16
  559. #define SSL3_MT_FINISHED 20
  560. #define SSL3_MT_CERTIFICATE_STATUS 22
  561. #ifndef OPENSSL_NO_NEXTPROTONEG
  562. #define SSL3_MT_NEXT_PROTO 67
  563. #endif
  564. #define DTLS1_MT_HELLO_VERIFY_REQUEST 3
  565. #define SSL3_MT_CCS 1
  566. /* These are used when changing over to a new cipher */
  567. #define SSL3_CC_READ 0x01
  568. #define SSL3_CC_WRITE 0x02
  569. #define SSL3_CC_CLIENT 0x10
  570. #define SSL3_CC_SERVER 0x20
  571. #define SSL3_CHANGE_CIPHER_CLIENT_WRITE (SSL3_CC_CLIENT|SSL3_CC_WRITE)
  572. #define SSL3_CHANGE_CIPHER_SERVER_READ (SSL3_CC_SERVER|SSL3_CC_READ)
  573. #define SSL3_CHANGE_CIPHER_CLIENT_READ (SSL3_CC_CLIENT|SSL3_CC_READ)
  574. #define SSL3_CHANGE_CIPHER_SERVER_WRITE (SSL3_CC_SERVER|SSL3_CC_WRITE)
  575. #ifdef __cplusplus
  576. }
  577. #endif
  578. #endif