1 /* $OpenBSD: ssl3.h,v 1.28 2014/10/31 15:34:06 jsing Exp $ */ 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 */ 116 117 #ifndef HEADER_SSL3_H 118 #define HEADER_SSL3_H 119 120 #include <openssl/buffer.h> 121 #include <openssl/evp.h> 122 #include <openssl/ssl.h> 123 124 #ifdef __cplusplus 125 extern "C" { 126 #endif 127 128 /* Signalling cipher suite value: from draft-ietf-tls-renegotiation-03.txt */ 129 #define SSL3_CK_SCSV 0x030000FF 130 131 #define SSL3_CK_RSA_NULL_MD5 0x03000001 132 #define SSL3_CK_RSA_NULL_SHA 0x03000002 133 #define SSL3_CK_RSA_RC4_40_MD5 0x03000003 134 #define SSL3_CK_RSA_RC4_128_MD5 0x03000004 135 #define SSL3_CK_RSA_RC4_128_SHA 0x03000005 136 #define SSL3_CK_RSA_RC2_40_MD5 0x03000006 137 #define SSL3_CK_RSA_IDEA_128_SHA 0x03000007 138 #define SSL3_CK_RSA_DES_40_CBC_SHA 0x03000008 139 #define SSL3_CK_RSA_DES_64_CBC_SHA 0x03000009 140 #define SSL3_CK_RSA_DES_192_CBC3_SHA 0x0300000A 141 142 #define SSL3_CK_DH_DSS_DES_40_CBC_SHA 0x0300000B 143 #define SSL3_CK_DH_DSS_DES_64_CBC_SHA 0x0300000C 144 #define SSL3_CK_DH_DSS_DES_192_CBC3_SHA 0x0300000D 145 #define SSL3_CK_DH_RSA_DES_40_CBC_SHA 0x0300000E 146 #define SSL3_CK_DH_RSA_DES_64_CBC_SHA 0x0300000F 147 #define SSL3_CK_DH_RSA_DES_192_CBC3_SHA 0x03000010 148 149 #define SSL3_CK_EDH_DSS_DES_40_CBC_SHA 0x03000011 150 #define SSL3_CK_EDH_DSS_DES_64_CBC_SHA 0x03000012 151 #define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA 0x03000013 152 #define SSL3_CK_EDH_RSA_DES_40_CBC_SHA 0x03000014 153 #define SSL3_CK_EDH_RSA_DES_64_CBC_SHA 0x03000015 154 #define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA 0x03000016 155 156 #define SSL3_CK_ADH_RC4_40_MD5 0x03000017 157 #define SSL3_CK_ADH_RC4_128_MD5 0x03000018 158 #define SSL3_CK_ADH_DES_40_CBC_SHA 0x03000019 159 #define SSL3_CK_ADH_DES_64_CBC_SHA 0x0300001A 160 #define SSL3_CK_ADH_DES_192_CBC_SHA 0x0300001B 161 162 /* VRS Additional Kerberos5 entries 163 */ 164 #define SSL3_CK_KRB5_DES_64_CBC_SHA 0x0300001E 165 #define SSL3_CK_KRB5_DES_192_CBC3_SHA 0x0300001F 166 #define SSL3_CK_KRB5_RC4_128_SHA 0x03000020 167 #define SSL3_CK_KRB5_IDEA_128_CBC_SHA 0x03000021 168 #define SSL3_CK_KRB5_DES_64_CBC_MD5 0x03000022 169 #define SSL3_CK_KRB5_DES_192_CBC3_MD5 0x03000023 170 #define SSL3_CK_KRB5_RC4_128_MD5 0x03000024 171 #define SSL3_CK_KRB5_IDEA_128_CBC_MD5 0x03000025 172 173 #define SSL3_CK_KRB5_DES_40_CBC_SHA 0x03000026 174 #define SSL3_CK_KRB5_RC2_40_CBC_SHA 0x03000027 175 #define SSL3_CK_KRB5_RC4_40_SHA 0x03000028 176 #define SSL3_CK_KRB5_DES_40_CBC_MD5 0x03000029 177 #define SSL3_CK_KRB5_RC2_40_CBC_MD5 0x0300002A 178 #define SSL3_CK_KRB5_RC4_40_MD5 0x0300002B 179 180 #define SSL3_TXT_RSA_NULL_MD5 "NULL-MD5" 181 #define SSL3_TXT_RSA_NULL_SHA "NULL-SHA" 182 #define SSL3_TXT_RSA_RC4_40_MD5 "EXP-RC4-MD5" 183 #define SSL3_TXT_RSA_RC4_128_MD5 "RC4-MD5" 184 #define SSL3_TXT_RSA_RC4_128_SHA "RC4-SHA" 185 #define SSL3_TXT_RSA_RC2_40_MD5 "EXP-RC2-CBC-MD5" 186 #define SSL3_TXT_RSA_IDEA_128_SHA "IDEA-CBC-SHA" 187 #define SSL3_TXT_RSA_DES_40_CBC_SHA "EXP-DES-CBC-SHA" 188 #define SSL3_TXT_RSA_DES_64_CBC_SHA "DES-CBC-SHA" 189 #define SSL3_TXT_RSA_DES_192_CBC3_SHA "DES-CBC3-SHA" 190 191 #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" 197 198 #define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA "EXP-EDH-DSS-DES-CBC-SHA" 199 #define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA "EDH-DSS-DES-CBC-SHA" 200 #define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA "EDH-DSS-DES-CBC3-SHA" 201 #define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA "EXP-EDH-RSA-DES-CBC-SHA" 202 #define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA "EDH-RSA-DES-CBC-SHA" 203 #define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA "EDH-RSA-DES-CBC3-SHA" 204 205 #define SSL3_TXT_ADH_RC4_40_MD5 "EXP-ADH-RC4-MD5" 206 #define SSL3_TXT_ADH_RC4_128_MD5 "ADH-RC4-MD5" 207 #define SSL3_TXT_ADH_DES_40_CBC_SHA "EXP-ADH-DES-CBC-SHA" 208 #define SSL3_TXT_ADH_DES_64_CBC_SHA "ADH-DES-CBC-SHA" 209 #define SSL3_TXT_ADH_DES_192_CBC_SHA "ADH-DES-CBC3-SHA" 210 211 #define SSL3_TXT_KRB5_DES_64_CBC_SHA "KRB5-DES-CBC-SHA" 212 #define SSL3_TXT_KRB5_DES_192_CBC3_SHA "KRB5-DES-CBC3-SHA" 213 #define SSL3_TXT_KRB5_RC4_128_SHA "KRB5-RC4-SHA" 214 #define SSL3_TXT_KRB5_IDEA_128_CBC_SHA "KRB5-IDEA-CBC-SHA" 215 #define SSL3_TXT_KRB5_DES_64_CBC_MD5 "KRB5-DES-CBC-MD5" 216 #define SSL3_TXT_KRB5_DES_192_CBC3_MD5 "KRB5-DES-CBC3-MD5" 217 #define SSL3_TXT_KRB5_RC4_128_MD5 "KRB5-RC4-MD5" 218 #define SSL3_TXT_KRB5_IDEA_128_CBC_MD5 "KRB5-IDEA-CBC-MD5" 219 220 #define SSL3_TXT_KRB5_DES_40_CBC_SHA "EXP-KRB5-DES-CBC-SHA" 221 #define SSL3_TXT_KRB5_RC2_40_CBC_SHA "EXP-KRB5-RC2-CBC-SHA" 222 #define SSL3_TXT_KRB5_RC4_40_SHA "EXP-KRB5-RC4-SHA" 223 #define SSL3_TXT_KRB5_DES_40_CBC_MD5 "EXP-KRB5-DES-CBC-MD5" 224 #define SSL3_TXT_KRB5_RC2_40_CBC_MD5 "EXP-KRB5-RC2-CBC-MD5" 225 #define SSL3_TXT_KRB5_RC4_40_MD5 "EXP-KRB5-RC4-MD5" 226 227 #define SSL3_SSL_SESSION_ID_LENGTH 32 228 #define SSL3_MAX_SSL_SESSION_ID_LENGTH 32 229 230 #define SSL3_MASTER_SECRET_SIZE 48 231 #define SSL3_RANDOM_SIZE 32 232 #define SSL3_SEQUENCE_SIZE 8 233 #define SSL3_SESSION_ID_SIZE 32 234 #define SSL3_RT_HEADER_LENGTH 5 235 #define SSL3_CIPHER_VALUE_SIZE 2 236 237 #ifndef SSL3_ALIGN_PAYLOAD 238 /* Some will argue that this increases memory footprint, but it's 239 * not actually true. Point is that malloc has to return at least 240 * 64-bit aligned pointers, meaning that allocating 5 bytes wastes 241 * 3 bytes in either case. Suggested pre-gaping simply moves these 242 * wasted bytes from the end of allocated region to its front, 243 * but makes data payload aligned, which improves performance:-) */ 244 # define SSL3_ALIGN_PAYLOAD 8 245 #else 246 # if (SSL3_ALIGN_PAYLOAD&(SSL3_ALIGN_PAYLOAD-1))!=0 247 # error "insane SSL3_ALIGN_PAYLOAD" 248 # undef SSL3_ALIGN_PAYLOAD 249 # endif 250 #endif 251 252 /* This is the maximum MAC (digest) size used by the SSL library. 253 * Currently maximum of 20 is used by SHA1, but we reserve for 254 * future extension for 512-bit hashes. 255 */ 256 257 #define SSL3_RT_MAX_MD_SIZE 64 258 259 /* Maximum block size used in all ciphersuites. Currently 16 for AES. 260 */ 261 262 #define SSL_RT_MAX_CIPHER_BLOCK_SIZE 16 263 264 #define SSL3_RT_MAX_EXTRA (16384) 265 266 /* Maximum plaintext length: defined by SSL/TLS standards */ 267 #define SSL3_RT_MAX_PLAIN_LENGTH 16384 268 /* Maximum compression overhead: defined by SSL/TLS standards */ 269 #define SSL3_RT_MAX_COMPRESSED_OVERHEAD 1024 270 271 /* The standards give a maximum encryption overhead of 1024 bytes. 272 * In practice the value is lower than this. The overhead is the maximum 273 * number of padding bytes (256) plus the mac size. 274 */ 275 #define SSL3_RT_MAX_ENCRYPTED_OVERHEAD (256 + SSL3_RT_MAX_MD_SIZE) 276 277 /* OpenSSL currently only uses a padding length of at most one block so 278 * the send overhead is smaller. 279 */ 280 281 #define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \ 282 (SSL_RT_MAX_CIPHER_BLOCK_SIZE + SSL3_RT_MAX_MD_SIZE) 283 284 /* If compression isn't used don't include the compression overhead */ 285 #define SSL3_RT_MAX_COMPRESSED_LENGTH SSL3_RT_MAX_PLAIN_LENGTH 286 #define SSL3_RT_MAX_ENCRYPTED_LENGTH \ 287 (SSL3_RT_MAX_ENCRYPTED_OVERHEAD+SSL3_RT_MAX_COMPRESSED_LENGTH) 288 #define SSL3_RT_MAX_PACKET_SIZE \ 289 (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH) 290 291 #define SSL3_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54" 292 #define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52" 293 294 #define SSL3_VERSION 0x0300 295 #define SSL3_VERSION_MAJOR 0x03 296 #define SSL3_VERSION_MINOR 0x00 297 298 #define SSL3_RT_CHANGE_CIPHER_SPEC 20 299 #define SSL3_RT_ALERT 21 300 #define SSL3_RT_HANDSHAKE 22 301 #define SSL3_RT_APPLICATION_DATA 23 302 #define TLS1_RT_HEARTBEAT 24 303 304 #define SSL3_AL_WARNING 1 305 #define SSL3_AL_FATAL 2 306 307 #define SSL3_AD_CLOSE_NOTIFY 0 308 #define SSL3_AD_UNEXPECTED_MESSAGE 10 /* fatal */ 309 #define SSL3_AD_BAD_RECORD_MAC 20 /* fatal */ 310 #define SSL3_AD_DECOMPRESSION_FAILURE 30 /* fatal */ 311 #define SSL3_AD_HANDSHAKE_FAILURE 40 /* fatal */ 312 #define SSL3_AD_NO_CERTIFICATE 41 313 #define SSL3_AD_BAD_CERTIFICATE 42 314 #define SSL3_AD_UNSUPPORTED_CERTIFICATE 43 315 #define SSL3_AD_CERTIFICATE_REVOKED 44 316 #define SSL3_AD_CERTIFICATE_EXPIRED 45 317 #define SSL3_AD_CERTIFICATE_UNKNOWN 46 318 #define SSL3_AD_ILLEGAL_PARAMETER 47 /* fatal */ 319 320 #define TLS1_HB_REQUEST 1 321 #define TLS1_HB_RESPONSE 2 322 323 #ifndef OPENSSL_NO_SSL_INTERN 324 325 typedef struct ssl3_record_st { 326 /*r */ int type; /* type of record */ 327 /*rw*/ unsigned int length; /* How many bytes available */ 328 /*r */ unsigned int off; /* read/write offset into 'buf' */ 329 /*rw*/ unsigned char *data; /* pointer to the record data */ 330 /*rw*/ unsigned char *input; /* where the decode bytes are */ 331 /*r */ unsigned long epoch; /* epoch number, needed by DTLS1 */ 332 /*r */ unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */ 333 } SSL3_RECORD; 334 335 typedef struct ssl3_buffer_st { 336 unsigned char *buf; /* at least SSL3_RT_MAX_PACKET_SIZE bytes, 337 * see ssl3_setup_buffers() */ 338 size_t len; /* buffer size */ 339 int offset; /* where to 'copy from' */ 340 int left; /* how many bytes left */ 341 } SSL3_BUFFER; 342 343 #endif 344 345 #define SSL3_CT_RSA_SIGN 1 346 #define SSL3_CT_DSS_SIGN 2 347 #define SSL3_CT_RSA_FIXED_DH 3 348 #define SSL3_CT_DSS_FIXED_DH 4 349 #define SSL3_CT_RSA_EPHEMERAL_DH 5 350 #define SSL3_CT_DSS_EPHEMERAL_DH 6 351 #define SSL3_CT_FORTEZZA_DMS 20 352 /* SSL3_CT_NUMBER is used to size arrays and it must be large 353 * enough to contain all of the cert types defined either for 354 * SSLv3 and TLSv1. 355 */ 356 #define SSL3_CT_NUMBER 9 357 358 359 #define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS 0x0001 360 #define SSL3_FLAGS_DELAY_CLIENT_FINISHED 0x0002 361 #define SSL3_FLAGS_POP_BUFFER 0x0004 362 #define TLS1_FLAGS_TLS_PADDING_BUG 0x0008 363 #define TLS1_FLAGS_SKIP_CERT_VERIFY 0x0010 364 #define TLS1_FLAGS_KEEP_HANDSHAKE 0x0020 365 #define SSL3_FLAGS_CCS_OK 0x0080 366 367 /* SSL3_FLAGS_SGC_RESTART_DONE is set when we 368 * restart a handshake because of MS SGC and so prevents us 369 * from restarting the handshake in a loop. It's reset on a 370 * renegotiation, so effectively limits the client to one restart 371 * per negotiation. This limits the possibility of a DDoS 372 * attack where the client handshakes in a loop using SGC to 373 * restart. Servers which permit renegotiation can still be 374 * effected, but we can't prevent that. 375 */ 376 #define SSL3_FLAGS_SGC_RESTART_DONE 0x0040 377 378 #ifndef OPENSSL_NO_SSL_INTERN 379 380 typedef struct ssl3_state_st { 381 long flags; 382 int delay_buf_pop_ret; 383 384 unsigned char read_sequence[SSL3_SEQUENCE_SIZE]; 385 int read_mac_secret_size; 386 unsigned char read_mac_secret[EVP_MAX_MD_SIZE]; 387 unsigned char write_sequence[SSL3_SEQUENCE_SIZE]; 388 int write_mac_secret_size; 389 unsigned char write_mac_secret[EVP_MAX_MD_SIZE]; 390 391 unsigned char server_random[SSL3_RANDOM_SIZE]; 392 unsigned char client_random[SSL3_RANDOM_SIZE]; 393 394 /* flags for countermeasure against known-IV weakness */ 395 int need_empty_fragments; 396 int empty_fragment_done; 397 398 /* The value of 'extra' when the buffers were initialized */ 399 int init_extra; 400 401 SSL3_BUFFER rbuf; /* read IO goes into here */ 402 SSL3_BUFFER wbuf; /* write IO goes into here */ 403 404 SSL3_RECORD rrec; /* each decoded record goes in here */ 405 SSL3_RECORD wrec; /* goes out from here */ 406 407 /* storage for Alert/Handshake protocol data received but not 408 * yet processed by ssl3_read_bytes: */ 409 unsigned char alert_fragment[2]; 410 unsigned int alert_fragment_len; 411 unsigned char handshake_fragment[4]; 412 unsigned int handshake_fragment_len; 413 414 /* partial write - check the numbers match */ 415 unsigned int wnum; /* number of bytes sent so far */ 416 int wpend_tot; /* number bytes written */ 417 int wpend_type; 418 int wpend_ret; /* number of bytes submitted */ 419 const unsigned char *wpend_buf; 420 421 /* used during startup, digest all incoming/outgoing packets */ 422 BIO *handshake_buffer; 423 /* When set of handshake digests is determined, buffer is hashed 424 * and freed and MD_CTX-es for all required digests are stored in 425 * this array */ 426 EVP_MD_CTX **handshake_dgst; 427 /* this is set whenerver we see a change_cipher_spec message 428 * come in when we are not looking for one */ 429 int change_cipher_spec; 430 431 int warn_alert; 432 int fatal_alert; 433 /* we allow one fatal and one warning alert to be outstanding, 434 * send close alert via the warning alert */ 435 int alert_dispatch; 436 unsigned char send_alert[2]; 437 438 /* This flag is set when we should renegotiate ASAP, basically when 439 * there is no more data in the read or write buffers */ 440 int renegotiate; 441 int total_renegotiations; 442 int num_renegotiations; 443 444 int in_read_app_data; 445 446 struct { 447 /* actually only needs to be 16+20 */ 448 unsigned char cert_verify_md[EVP_MAX_MD_SIZE*2]; 449 450 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */ 451 unsigned char finish_md[EVP_MAX_MD_SIZE*2]; 452 int finish_md_len; 453 unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2]; 454 int peer_finish_md_len; 455 456 unsigned long message_size; 457 int message_type; 458 459 /* used to hold the new cipher we are going to use */ 460 const SSL_CIPHER *new_cipher; 461 DH *dh; 462 463 EC_KEY *ecdh; /* holds short lived ECDH key */ 464 465 /* used when SSL_ST_FLUSH_DATA is entered */ 466 int next_state; 467 468 int reuse_message; 469 470 /* used for certificate requests */ 471 int cert_req; 472 int ctype_num; 473 char ctype[SSL3_CT_NUMBER]; 474 STACK_OF(X509_NAME) *ca_names; 475 476 int key_block_length; 477 unsigned char *key_block; 478 479 const EVP_CIPHER *new_sym_enc; 480 const EVP_AEAD *new_aead; 481 const EVP_MD *new_hash; 482 int new_mac_pkey_type; 483 int new_mac_secret_size; 484 int cert_request; 485 } tmp; 486 487 /* Connection binding to prevent renegotiation attacks */ 488 unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; 489 unsigned char previous_client_finished_len; 490 unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; 491 unsigned char previous_server_finished_len; 492 int send_connection_binding; /* TODOEKR */ 493 494 #ifndef OPENSSL_NO_NEXTPROTONEG 495 /* Set if we saw the Next Protocol Negotiation extension from our peer. 496 */ 497 int next_proto_neg_seen; 498 #endif 499 500 /* This is set to true if we believe that this is a version of Safari 501 * running on OS X 10.6 or newer. We wish to know this because Safari 502 * on 10.8 .. 10.8.3 has broken ECDHE-ECDSA support. */ 503 char is_probably_safari; 504 } SSL3_STATE; 505 506 #endif 507 508 /* SSLv3 */ 509 /*client */ 510 /* extra state */ 511 #define SSL3_ST_CW_FLUSH (0x100|SSL_ST_CONNECT) 512 #ifndef OPENSSL_NO_SCTP 513 #define DTLS1_SCTP_ST_CW_WRITE_SOCK (0x310|SSL_ST_CONNECT) 514 #define DTLS1_SCTP_ST_CR_READ_SOCK (0x320|SSL_ST_CONNECT) 515 #endif 516 /* write to server */ 517 #define SSL3_ST_CW_CLNT_HELLO_A (0x110|SSL_ST_CONNECT) 518 #define SSL3_ST_CW_CLNT_HELLO_B (0x111|SSL_ST_CONNECT) 519 /* read from server */ 520 #define SSL3_ST_CR_SRVR_HELLO_A (0x120|SSL_ST_CONNECT) 521 #define SSL3_ST_CR_SRVR_HELLO_B (0x121|SSL_ST_CONNECT) 522 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126|SSL_ST_CONNECT) 523 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127|SSL_ST_CONNECT) 524 #define SSL3_ST_CR_CERT_A (0x130|SSL_ST_CONNECT) 525 #define SSL3_ST_CR_CERT_B (0x131|SSL_ST_CONNECT) 526 #define SSL3_ST_CR_KEY_EXCH_A (0x140|SSL_ST_CONNECT) 527 #define SSL3_ST_CR_KEY_EXCH_B (0x141|SSL_ST_CONNECT) 528 #define SSL3_ST_CR_CERT_REQ_A (0x150|SSL_ST_CONNECT) 529 #define SSL3_ST_CR_CERT_REQ_B (0x151|SSL_ST_CONNECT) 530 #define SSL3_ST_CR_SRVR_DONE_A (0x160|SSL_ST_CONNECT) 531 #define SSL3_ST_CR_SRVR_DONE_B (0x161|SSL_ST_CONNECT) 532 /* write to server */ 533 #define SSL3_ST_CW_CERT_A (0x170|SSL_ST_CONNECT) 534 #define SSL3_ST_CW_CERT_B (0x171|SSL_ST_CONNECT) 535 #define SSL3_ST_CW_CERT_C (0x172|SSL_ST_CONNECT) 536 #define SSL3_ST_CW_CERT_D (0x173|SSL_ST_CONNECT) 537 #define SSL3_ST_CW_KEY_EXCH_A (0x180|SSL_ST_CONNECT) 538 #define SSL3_ST_CW_KEY_EXCH_B (0x181|SSL_ST_CONNECT) 539 #define SSL3_ST_CW_CERT_VRFY_A (0x190|SSL_ST_CONNECT) 540 #define SSL3_ST_CW_CERT_VRFY_B (0x191|SSL_ST_CONNECT) 541 #define SSL3_ST_CW_CHANGE_A (0x1A0|SSL_ST_CONNECT) 542 #define SSL3_ST_CW_CHANGE_B (0x1A1|SSL_ST_CONNECT) 543 #ifndef OPENSSL_NO_NEXTPROTONEG 544 #define SSL3_ST_CW_NEXT_PROTO_A (0x200|SSL_ST_CONNECT) 545 #define SSL3_ST_CW_NEXT_PROTO_B (0x201|SSL_ST_CONNECT) 546 #endif 547 #define SSL3_ST_CW_FINISHED_A (0x1B0|SSL_ST_CONNECT) 548 #define SSL3_ST_CW_FINISHED_B (0x1B1|SSL_ST_CONNECT) 549 /* read from server */ 550 #define SSL3_ST_CR_CHANGE_A (0x1C0|SSL_ST_CONNECT) 551 #define SSL3_ST_CR_CHANGE_B (0x1C1|SSL_ST_CONNECT) 552 #define SSL3_ST_CR_FINISHED_A (0x1D0|SSL_ST_CONNECT) 553 #define SSL3_ST_CR_FINISHED_B (0x1D1|SSL_ST_CONNECT) 554 #define SSL3_ST_CR_SESSION_TICKET_A (0x1E0|SSL_ST_CONNECT) 555 #define SSL3_ST_CR_SESSION_TICKET_B (0x1E1|SSL_ST_CONNECT) 556 #define SSL3_ST_CR_CERT_STATUS_A (0x1F0|SSL_ST_CONNECT) 557 #define SSL3_ST_CR_CERT_STATUS_B (0x1F1|SSL_ST_CONNECT) 558 559 /* server */ 560 /* extra state */ 561 #define SSL3_ST_SW_FLUSH (0x100|SSL_ST_ACCEPT) 562 #ifndef OPENSSL_NO_SCTP 563 #define DTLS1_SCTP_ST_SW_WRITE_SOCK (0x310|SSL_ST_ACCEPT) 564 #define DTLS1_SCTP_ST_SR_READ_SOCK (0x320|SSL_ST_ACCEPT) 565 #endif 566 /* read from client */ 567 /* Do not change the number values, they do matter */ 568 #define SSL3_ST_SR_CLNT_HELLO_A (0x110|SSL_ST_ACCEPT) 569 #define SSL3_ST_SR_CLNT_HELLO_B (0x111|SSL_ST_ACCEPT) 570 #define SSL3_ST_SR_CLNT_HELLO_C (0x112|SSL_ST_ACCEPT) 571 /* write to client */ 572 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A (0x113|SSL_ST_ACCEPT) 573 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B (0x114|SSL_ST_ACCEPT) 574 #define SSL3_ST_SW_HELLO_REQ_A (0x120|SSL_ST_ACCEPT) 575 #define SSL3_ST_SW_HELLO_REQ_B (0x121|SSL_ST_ACCEPT) 576 #define SSL3_ST_SW_HELLO_REQ_C (0x122|SSL_ST_ACCEPT) 577 #define SSL3_ST_SW_SRVR_HELLO_A (0x130|SSL_ST_ACCEPT) 578 #define SSL3_ST_SW_SRVR_HELLO_B (0x131|SSL_ST_ACCEPT) 579 #define SSL3_ST_SW_CERT_A (0x140|SSL_ST_ACCEPT) 580 #define SSL3_ST_SW_CERT_B (0x141|SSL_ST_ACCEPT) 581 #define SSL3_ST_SW_KEY_EXCH_A (0x150|SSL_ST_ACCEPT) 582 #define SSL3_ST_SW_KEY_EXCH_B (0x151|SSL_ST_ACCEPT) 583 #define SSL3_ST_SW_CERT_REQ_A (0x160|SSL_ST_ACCEPT) 584 #define SSL3_ST_SW_CERT_REQ_B (0x161|SSL_ST_ACCEPT) 585 #define SSL3_ST_SW_SRVR_DONE_A (0x170|SSL_ST_ACCEPT) 586 #define SSL3_ST_SW_SRVR_DONE_B (0x171|SSL_ST_ACCEPT) 587 /* read from client */ 588 #define SSL3_ST_SR_CERT_A (0x180|SSL_ST_ACCEPT) 589 #define SSL3_ST_SR_CERT_B (0x181|SSL_ST_ACCEPT) 590 #define SSL3_ST_SR_KEY_EXCH_A (0x190|SSL_ST_ACCEPT) 591 #define SSL3_ST_SR_KEY_EXCH_B (0x191|SSL_ST_ACCEPT) 592 #define SSL3_ST_SR_CERT_VRFY_A (0x1A0|SSL_ST_ACCEPT) 593 #define SSL3_ST_SR_CERT_VRFY_B (0x1A1|SSL_ST_ACCEPT) 594 #define SSL3_ST_SR_CHANGE_A (0x1B0|SSL_ST_ACCEPT) 595 #define SSL3_ST_SR_CHANGE_B (0x1B1|SSL_ST_ACCEPT) 596 #ifndef OPENSSL_NO_NEXTPROTONEG 597 #define SSL3_ST_SR_NEXT_PROTO_A (0x210|SSL_ST_ACCEPT) 598 #define SSL3_ST_SR_NEXT_PROTO_B (0x211|SSL_ST_ACCEPT) 599 #endif 600 #define SSL3_ST_SR_FINISHED_A (0x1C0|SSL_ST_ACCEPT) 601 #define SSL3_ST_SR_FINISHED_B (0x1C1|SSL_ST_ACCEPT) 602 /* write to client */ 603 #define SSL3_ST_SW_CHANGE_A (0x1D0|SSL_ST_ACCEPT) 604 #define SSL3_ST_SW_CHANGE_B (0x1D1|SSL_ST_ACCEPT) 605 #define SSL3_ST_SW_FINISHED_A (0x1E0|SSL_ST_ACCEPT) 606 #define SSL3_ST_SW_FINISHED_B (0x1E1|SSL_ST_ACCEPT) 607 #define SSL3_ST_SW_SESSION_TICKET_A (0x1F0|SSL_ST_ACCEPT) 608 #define SSL3_ST_SW_SESSION_TICKET_B (0x1F1|SSL_ST_ACCEPT) 609 #define SSL3_ST_SW_CERT_STATUS_A (0x200|SSL_ST_ACCEPT) 610 #define SSL3_ST_SW_CERT_STATUS_B (0x201|SSL_ST_ACCEPT) 611 612 #define SSL3_MT_HELLO_REQUEST 0 613 #define SSL3_MT_CLIENT_HELLO 1 614 #define SSL3_MT_SERVER_HELLO 2 615 #define SSL3_MT_NEWSESSION_TICKET 4 616 #define SSL3_MT_CERTIFICATE 11 617 #define SSL3_MT_SERVER_KEY_EXCHANGE 12 618 #define SSL3_MT_CERTIFICATE_REQUEST 13 619 #define SSL3_MT_SERVER_DONE 14 620 #define SSL3_MT_CERTIFICATE_VERIFY 15 621 #define SSL3_MT_CLIENT_KEY_EXCHANGE 16 622 #define SSL3_MT_FINISHED 20 623 #define SSL3_MT_CERTIFICATE_STATUS 22 624 625 #ifndef OPENSSL_NO_NEXTPROTONEG 626 #define SSL3_MT_NEXT_PROTO 67 627 #endif 628 629 #define DTLS1_MT_HELLO_VERIFY_REQUEST 3 630 631 #define SSL3_MT_CCS 1 632 633 /* These are used when changing over to a new cipher */ 634 #define SSL3_CC_READ 0x01 635 #define SSL3_CC_WRITE 0x02 636 #define SSL3_CC_CLIENT 0x10 637 #define SSL3_CC_SERVER 0x20 638 #define SSL3_CHANGE_CIPHER_CLIENT_WRITE (SSL3_CC_CLIENT|SSL3_CC_WRITE) 639 #define SSL3_CHANGE_CIPHER_SERVER_READ (SSL3_CC_SERVER|SSL3_CC_READ) 640 #define SSL3_CHANGE_CIPHER_CLIENT_READ (SSL3_CC_CLIENT|SSL3_CC_READ) 641 #define SSL3_CHANGE_CIPHER_SERVER_WRITE (SSL3_CC_SERVER|SSL3_CC_WRITE) 642 643 #ifdef __cplusplus 644 } 645 #endif 646 #endif 647