1 /* ssl/ssl3.h */ 2 /* Copyright (C) 1995-1998 Eric Young (eay (at) cryptsoft.com) 3 * All rights reserved. 4 * 5 * This package is an SSL implementation written 6 * by Eric Young (eay (at) 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 (at) 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 (at) 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 (at) 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 (at) 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 (at) cryptsoft.com). This product includes software written by Tim 108 * Hudson (tjh (at) 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/buf.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 /* Fallback signalling cipher suite value: not IANA assigned. 131 * See https://tools.ietf.org/html/draft-bmoeller-tls-downgrade-scsv-01 */ 132 #define SSL3_CK_FALLBACK_SCSV 0x03005600 133 134 #define SSL3_CK_RSA_NULL_MD5 0x03000001 135 #define SSL3_CK_RSA_NULL_SHA 0x03000002 136 #define SSL3_CK_RSA_RC4_40_MD5 0x03000003 137 #define SSL3_CK_RSA_RC4_128_MD5 0x03000004 138 #define SSL3_CK_RSA_RC4_128_SHA 0x03000005 139 #define SSL3_CK_RSA_RC2_40_MD5 0x03000006 140 #define SSL3_CK_RSA_IDEA_128_SHA 0x03000007 141 #define SSL3_CK_RSA_DES_40_CBC_SHA 0x03000008 142 #define SSL3_CK_RSA_DES_64_CBC_SHA 0x03000009 143 #define SSL3_CK_RSA_DES_192_CBC3_SHA 0x0300000A 144 145 #define SSL3_CK_DH_DSS_DES_40_CBC_SHA 0x0300000B 146 #define SSL3_CK_DH_DSS_DES_64_CBC_SHA 0x0300000C 147 #define SSL3_CK_DH_DSS_DES_192_CBC3_SHA 0x0300000D 148 #define SSL3_CK_DH_RSA_DES_40_CBC_SHA 0x0300000E 149 #define SSL3_CK_DH_RSA_DES_64_CBC_SHA 0x0300000F 150 #define SSL3_CK_DH_RSA_DES_192_CBC3_SHA 0x03000010 151 152 #define SSL3_CK_EDH_DSS_DES_40_CBC_SHA 0x03000011 153 #define SSL3_CK_EDH_DSS_DES_64_CBC_SHA 0x03000012 154 #define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA 0x03000013 155 #define SSL3_CK_EDH_RSA_DES_40_CBC_SHA 0x03000014 156 #define SSL3_CK_EDH_RSA_DES_64_CBC_SHA 0x03000015 157 #define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA 0x03000016 158 159 #define SSL3_CK_ADH_RC4_40_MD5 0x03000017 160 #define SSL3_CK_ADH_RC4_128_MD5 0x03000018 161 #define SSL3_CK_ADH_DES_40_CBC_SHA 0x03000019 162 #define SSL3_CK_ADH_DES_64_CBC_SHA 0x0300001A 163 #define SSL3_CK_ADH_DES_192_CBC_SHA 0x0300001B 164 165 #define SSL3_TXT_RSA_NULL_MD5 "NULL-MD5" 166 #define SSL3_TXT_RSA_NULL_SHA "NULL-SHA" 167 #define SSL3_TXT_RSA_RC4_40_MD5 "EXP-RC4-MD5" 168 #define SSL3_TXT_RSA_RC4_128_MD5 "RC4-MD5" 169 #define SSL3_TXT_RSA_RC4_128_SHA "RC4-SHA" 170 #define SSL3_TXT_RSA_RC2_40_MD5 "EXP-RC2-CBC-MD5" 171 #define SSL3_TXT_RSA_IDEA_128_SHA "IDEA-CBC-SHA" 172 #define SSL3_TXT_RSA_DES_40_CBC_SHA "EXP-DES-CBC-SHA" 173 #define SSL3_TXT_RSA_DES_64_CBC_SHA "DES-CBC-SHA" 174 #define SSL3_TXT_RSA_DES_192_CBC3_SHA "DES-CBC3-SHA" 175 176 #define SSL3_TXT_DH_DSS_DES_40_CBC_SHA "EXP-DH-DSS-DES-CBC-SHA" 177 #define SSL3_TXT_DH_DSS_DES_64_CBC_SHA "DH-DSS-DES-CBC-SHA" 178 #define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA "DH-DSS-DES-CBC3-SHA" 179 #define SSL3_TXT_DH_RSA_DES_40_CBC_SHA "EXP-DH-RSA-DES-CBC-SHA" 180 #define SSL3_TXT_DH_RSA_DES_64_CBC_SHA "DH-RSA-DES-CBC-SHA" 181 #define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA "DH-RSA-DES-CBC3-SHA" 182 183 #define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA "EXP-EDH-DSS-DES-CBC-SHA" 184 #define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA "EDH-DSS-DES-CBC-SHA" 185 #define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA "EDH-DSS-DES-CBC3-SHA" 186 #define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA "EXP-EDH-RSA-DES-CBC-SHA" 187 #define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA "EDH-RSA-DES-CBC-SHA" 188 #define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA "EDH-RSA-DES-CBC3-SHA" 189 190 #define SSL3_TXT_ADH_RC4_40_MD5 "EXP-ADH-RC4-MD5" 191 #define SSL3_TXT_ADH_RC4_128_MD5 "ADH-RC4-MD5" 192 #define SSL3_TXT_ADH_DES_40_CBC_SHA "EXP-ADH-DES-CBC-SHA" 193 #define SSL3_TXT_ADH_DES_64_CBC_SHA "ADH-DES-CBC-SHA" 194 #define SSL3_TXT_ADH_DES_192_CBC_SHA "ADH-DES-CBC3-SHA" 195 196 #define SSL3_SSL_SESSION_ID_LENGTH 32 197 #define SSL3_MAX_SSL_SESSION_ID_LENGTH 32 198 199 #define SSL3_MASTER_SECRET_SIZE 48 200 #define SSL3_RANDOM_SIZE 32 201 #define SSL3_SESSION_ID_SIZE 32 202 #define SSL3_RT_HEADER_LENGTH 5 203 204 #define SSL3_HM_HEADER_LENGTH 4 205 206 #ifndef SSL3_ALIGN_PAYLOAD 207 /* Some will argue that this increases memory footprint, but it's 208 * not actually true. Point is that malloc has to return at least 209 * 64-bit aligned pointers, meaning that allocating 5 bytes wastes 210 * 3 bytes in either case. Suggested pre-gaping simply moves these 211 * wasted bytes from the end of allocated region to its front, 212 * but makes data payload aligned, which improves performance:-) */ 213 # define SSL3_ALIGN_PAYLOAD 8 214 #else 215 # if (SSL3_ALIGN_PAYLOAD&(SSL3_ALIGN_PAYLOAD-1))!=0 216 # error "insane SSL3_ALIGN_PAYLOAD" 217 # undef SSL3_ALIGN_PAYLOAD 218 # endif 219 #endif 220 221 /* This is the maximum MAC (digest) size used by the SSL library. 222 * Currently maximum of 20 is used by SHA1, but we reserve for 223 * future extension for 512-bit hashes. 224 */ 225 226 #define SSL3_RT_MAX_MD_SIZE 64 227 228 /* Maximum block size used in all ciphersuites. Currently 16 for AES. 229 */ 230 231 #define SSL_RT_MAX_CIPHER_BLOCK_SIZE 16 232 233 #define SSL3_RT_MAX_EXTRA (16384) 234 235 /* Maximum plaintext length: defined by SSL/TLS standards */ 236 #define SSL3_RT_MAX_PLAIN_LENGTH 16384 237 /* Maximum compression overhead: defined by SSL/TLS standards */ 238 #define SSL3_RT_MAX_COMPRESSED_OVERHEAD 1024 239 240 /* The standards give a maximum encryption overhead of 1024 bytes. 241 * In practice the value is lower than this. The overhead is the maximum 242 * number of padding bytes (256) plus the mac size. 243 */ 244 #define SSL3_RT_MAX_ENCRYPTED_OVERHEAD (256 + SSL3_RT_MAX_MD_SIZE) 245 246 /* OpenSSL currently only uses a padding length of at most one block so 247 * the send overhead is smaller. 248 */ 249 250 #define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \ 251 (SSL_RT_MAX_CIPHER_BLOCK_SIZE + SSL3_RT_MAX_MD_SIZE) 252 253 /* If compression isn't used don't include the compression overhead */ 254 255 #define SSL3_RT_MAX_COMPRESSED_LENGTH \ 256 (SSL3_RT_MAX_PLAIN_LENGTH+SSL3_RT_MAX_COMPRESSED_OVERHEAD) 257 #define SSL3_RT_MAX_ENCRYPTED_LENGTH \ 258 (SSL3_RT_MAX_ENCRYPTED_OVERHEAD+SSL3_RT_MAX_COMPRESSED_LENGTH) 259 #define SSL3_RT_MAX_PACKET_SIZE \ 260 (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH) 261 262 #define SSL3_MD_CLIENT_FINISHED_CONST "\x43\x4C\x4E\x54" 263 #define SSL3_MD_SERVER_FINISHED_CONST "\x53\x52\x56\x52" 264 265 #define SSL3_VERSION 0x0300 266 #define SSL3_VERSION_MAJOR 0x03 267 #define SSL3_VERSION_MINOR 0x00 268 269 #define SSL3_RT_CHANGE_CIPHER_SPEC 20 270 #define SSL3_RT_ALERT 21 271 #define SSL3_RT_HANDSHAKE 22 272 #define SSL3_RT_APPLICATION_DATA 23 273 274 /* Pseudo content types to indicate additional parameters */ 275 #define TLS1_RT_CRYPTO 0x1000 276 #define TLS1_RT_CRYPTO_PREMASTER (TLS1_RT_CRYPTO | 0x1) 277 #define TLS1_RT_CRYPTO_CLIENT_RANDOM (TLS1_RT_CRYPTO | 0x2) 278 #define TLS1_RT_CRYPTO_SERVER_RANDOM (TLS1_RT_CRYPTO | 0x3) 279 #define TLS1_RT_CRYPTO_MASTER (TLS1_RT_CRYPTO | 0x4) 280 281 #define TLS1_RT_CRYPTO_READ 0x0000 282 #define TLS1_RT_CRYPTO_WRITE 0x0100 283 #define TLS1_RT_CRYPTO_MAC (TLS1_RT_CRYPTO | 0x5) 284 #define TLS1_RT_CRYPTO_KEY (TLS1_RT_CRYPTO | 0x6) 285 #define TLS1_RT_CRYPTO_IV (TLS1_RT_CRYPTO | 0x7) 286 #define TLS1_RT_CRYPTO_FIXED_IV (TLS1_RT_CRYPTO | 0x8) 287 288 /* Pseudo content type for SSL/TLS header info */ 289 #define SSL3_RT_HEADER 0x100 290 291 #define SSL3_AL_WARNING 1 292 #define SSL3_AL_FATAL 2 293 294 #define SSL3_AD_CLOSE_NOTIFY 0 295 #define SSL3_AD_UNEXPECTED_MESSAGE 10 /* fatal */ 296 #define SSL3_AD_BAD_RECORD_MAC 20 /* fatal */ 297 #define SSL3_AD_DECOMPRESSION_FAILURE 30 /* fatal */ 298 #define SSL3_AD_HANDSHAKE_FAILURE 40 /* fatal */ 299 #define SSL3_AD_NO_CERTIFICATE 41 300 #define SSL3_AD_BAD_CERTIFICATE 42 301 #define SSL3_AD_UNSUPPORTED_CERTIFICATE 43 302 #define SSL3_AD_CERTIFICATE_REVOKED 44 303 #define SSL3_AD_CERTIFICATE_EXPIRED 45 304 #define SSL3_AD_CERTIFICATE_UNKNOWN 46 305 #define SSL3_AD_ILLEGAL_PARAMETER 47 /* fatal */ 306 #define SSL3_AD_INAPPROPRIATE_FALLBACK 86 /* fatal */ 307 308 #ifndef OPENSSL_NO_SSL_INTERN 309 310 typedef struct ssl3_record_st 311 { 312 /*r */ int type; /* type of record */ 313 /*rw*/ unsigned int length; /* How many bytes available */ 314 /*r */ unsigned int off; /* read/write offset into 'buf' */ 315 /*rw*/ unsigned char *data; /* pointer to the record data */ 316 /*rw*/ unsigned char *input; /* where the decode bytes are */ 317 /*r */ unsigned long epoch; /* epoch number, needed by DTLS1 */ 318 /*r */ unsigned char seq_num[8]; /* sequence number, needed by DTLS1 */ 319 } SSL3_RECORD; 320 321 typedef struct ssl3_buffer_st 322 { 323 unsigned char *buf; /* at least SSL3_RT_MAX_PACKET_SIZE bytes, 324 * see ssl3_setup_buffers() */ 325 size_t len; /* buffer size */ 326 int offset; /* where to 'copy from' */ 327 int left; /* how many bytes left */ 328 } SSL3_BUFFER; 329 330 #endif 331 332 #define SSL3_CT_RSA_SIGN 1 333 #define SSL3_CT_DSS_SIGN 2 334 #define SSL3_CT_RSA_FIXED_DH 3 335 #define SSL3_CT_DSS_FIXED_DH 4 336 #define SSL3_CT_RSA_EPHEMERAL_DH 5 337 #define SSL3_CT_DSS_EPHEMERAL_DH 6 338 #define SSL3_CT_FORTEZZA_DMS 20 339 340 341 #define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS 0x0001 342 #define SSL3_FLAGS_POP_BUFFER 0x0004 343 /* TODO(davidben): This flag can probably be merged into s3->change_cipher_spec 344 * to something tri-state. (Normal / Expect CCS / Between CCS and Finished). */ 345 #define SSL3_FLAGS_EXPECT_CCS 0x0080 346 347 #ifndef OPENSSL_NO_SSL_INTERN 348 349 typedef struct ssl3_state_st 350 { 351 long flags; 352 int delay_buf_pop_ret; 353 354 unsigned char read_sequence[8]; 355 int read_mac_secret_size; 356 unsigned char read_mac_secret[EVP_MAX_MD_SIZE]; 357 unsigned char write_sequence[8]; 358 int write_mac_secret_size; 359 unsigned char write_mac_secret[EVP_MAX_MD_SIZE]; 360 361 unsigned char server_random[SSL3_RANDOM_SIZE]; 362 unsigned char client_random[SSL3_RANDOM_SIZE]; 363 364 /* flags for countermeasure against known-IV weakness */ 365 int need_record_splitting; 366 int record_split_done; 367 368 /* The value of 'extra' when the buffers were initialized */ 369 int init_extra; 370 371 SSL3_BUFFER rbuf; /* read IO goes into here */ 372 SSL3_BUFFER wbuf; /* write IO goes into here */ 373 374 SSL3_RECORD rrec; /* each decoded record goes in here */ 375 SSL3_RECORD wrec; /* goes out from here */ 376 377 /* storage for Alert/Handshake protocol data received but not 378 * yet processed by ssl3_read_bytes: */ 379 unsigned char alert_fragment[2]; 380 unsigned int alert_fragment_len; 381 unsigned char handshake_fragment[4]; 382 unsigned int handshake_fragment_len; 383 384 /* partial write - check the numbers match */ 385 unsigned int wnum; /* number of bytes sent so far */ 386 int wpend_tot; /* number bytes written */ 387 int wpend_type; 388 int wpend_ret; /* number of bytes submitted */ 389 const unsigned char *wpend_buf; 390 391 /* used during startup, digest all incoming/outgoing packets */ 392 BIO *handshake_buffer; 393 /* When set of handshake digests is determined, buffer is hashed 394 * and freed and MD_CTX-es for all required digests are stored in 395 * this array */ 396 EVP_MD_CTX **handshake_dgst; 397 /* this is set whenerver we see a change_cipher_spec message 398 * come in when we are not looking for one */ 399 int change_cipher_spec; 400 401 int warn_alert; 402 int fatal_alert; 403 /* we allow one fatal and one warning alert to be outstanding, 404 * send close alert via the warning alert */ 405 int alert_dispatch; 406 unsigned char send_alert[2]; 407 408 /* This flag is set when we should renegotiate ASAP, basically when 409 * there is no more data in the read or write buffers */ 410 int renegotiate; 411 int total_renegotiations; 412 int num_renegotiations; 413 414 int in_read_app_data; 415 416 /* State pertaining to the pending handshake. 417 * 418 * TODO(davidben): State is current spread all over the place. Move 419 * pending handshake state here so it can be managed separately from 420 * established connection state in case of renegotiations. 421 */ 422 struct { 423 /* actually only need to be 16+20 for SSLv3 and 12 for TLS */ 424 unsigned char finish_md[EVP_MAX_MD_SIZE*2]; 425 int finish_md_len; 426 unsigned char peer_finish_md[EVP_MAX_MD_SIZE*2]; 427 int peer_finish_md_len; 428 429 unsigned long message_size; 430 int message_type; 431 432 /* used to hold the new cipher we are going to use */ 433 const SSL_CIPHER *new_cipher; 434 DH *dh; 435 436 EC_KEY *ecdh; /* holds short lived ECDH key */ 437 438 /* used when SSL_ST_FLUSH_DATA is entered */ 439 int next_state; 440 441 int reuse_message; 442 443 /* Client-only: cert_req determines if a client certificate is 444 * to be sent. This is 0 if no client Certificate message is to 445 * be sent, 1 if there is a client certificate, and 2 to send an 446 * empty client Certificate message. */ 447 int cert_req; 448 449 /* Client-only: ca_names contains the list of CAs received in a 450 * CertificateRequest message. */ 451 STACK_OF(X509_NAME) *ca_names; 452 453 /* Client-only: certificate_types contains the set of 454 * certificate types received in a CertificateRequest 455 * message. */ 456 unsigned char *certificate_types; 457 size_t num_certificate_types; 458 459 int key_block_length; 460 unsigned char *key_block; 461 462 const EVP_CIPHER *new_sym_enc; 463 const EVP_AEAD *new_aead; 464 const EVP_MD *new_hash; 465 int new_mac_pkey_type; 466 int new_mac_secret_size; 467 468 /* Server-only: cert_request is true if a client certificate was 469 * requested. */ 470 int cert_request; 471 472 /* certificate_status_expected is true if OCSP stapling was 473 * negotiated and the server is expected to send a 474 * CertificateStatus message. */ 475 char certificate_status_expected; 476 } tmp; 477 478 /* Connection binding to prevent renegotiation attacks */ 479 unsigned char previous_client_finished[EVP_MAX_MD_SIZE]; 480 unsigned char previous_client_finished_len; 481 unsigned char previous_server_finished[EVP_MAX_MD_SIZE]; 482 unsigned char previous_server_finished_len; 483 int send_connection_binding; /* TODOEKR */ 484 485 /* Set if we saw the Next Protocol Negotiation extension from our peer. */ 486 int next_proto_neg_seen; 487 488 /* ALPN information 489 * (we are in the process of transitioning from NPN to ALPN.) */ 490 491 /* In a server these point to the selected ALPN protocol after the 492 * ClientHello has been processed. In a client these contain the 493 * protocol that the server selected once the ServerHello has been 494 * processed. */ 495 uint8_t *alpn_selected; 496 size_t alpn_selected_len; 497 498 /* In a client, this means that the server supported Channel ID and that 499 * a Channel ID was sent. In a server it means that we echoed support 500 * for Channel IDs and that tlsext_channel_id will be valid after the 501 * handshake. */ 502 char tlsext_channel_id_valid; 503 /* tlsext_channel_id_new means that the updated Channel ID extension 504 * was negotiated. This is a temporary hack in the code to support both 505 * forms of Channel ID extension while we transition to the new format, 506 * which fixed a security issue. */ 507 char tlsext_channel_id_new; 508 /* For a server: 509 * If |tlsext_channel_id_valid| is true, then this contains the 510 * verified Channel ID from the client: a P256 point, (x,y), where 511 * each are big-endian values. */ 512 unsigned char tlsext_channel_id[64]; 513 } SSL3_STATE; 514 515 #endif 516 517 /* SSLv3 */ 518 /*client */ 519 /* extra state */ 520 #define SSL3_ST_CW_FLUSH (0x100|SSL_ST_CONNECT) 521 #define SSL3_ST_CUTTHROUGH_COMPLETE (0x101|SSL_ST_CONNECT) 522 /* write to server */ 523 #define SSL3_ST_CW_CLNT_HELLO_A (0x110|SSL_ST_CONNECT) 524 #define SSL3_ST_CW_CLNT_HELLO_B (0x111|SSL_ST_CONNECT) 525 /* read from server */ 526 #define SSL3_ST_CR_SRVR_HELLO_A (0x120|SSL_ST_CONNECT) 527 #define SSL3_ST_CR_SRVR_HELLO_B (0x121|SSL_ST_CONNECT) 528 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_A (0x126|SSL_ST_CONNECT) 529 #define DTLS1_ST_CR_HELLO_VERIFY_REQUEST_B (0x127|SSL_ST_CONNECT) 530 #define SSL3_ST_CR_CERT_A (0x130|SSL_ST_CONNECT) 531 #define SSL3_ST_CR_CERT_B (0x131|SSL_ST_CONNECT) 532 #define SSL3_ST_CR_KEY_EXCH_A (0x140|SSL_ST_CONNECT) 533 #define SSL3_ST_CR_KEY_EXCH_B (0x141|SSL_ST_CONNECT) 534 #define SSL3_ST_CR_CERT_REQ_A (0x150|SSL_ST_CONNECT) 535 #define SSL3_ST_CR_CERT_REQ_B (0x151|SSL_ST_CONNECT) 536 #define SSL3_ST_CR_SRVR_DONE_A (0x160|SSL_ST_CONNECT) 537 #define SSL3_ST_CR_SRVR_DONE_B (0x161|SSL_ST_CONNECT) 538 /* write to server */ 539 #define SSL3_ST_CW_CERT_A (0x170|SSL_ST_CONNECT) 540 #define SSL3_ST_CW_CERT_B (0x171|SSL_ST_CONNECT) 541 #define SSL3_ST_CW_CERT_C (0x172|SSL_ST_CONNECT) 542 #define SSL3_ST_CW_CERT_D (0x173|SSL_ST_CONNECT) 543 #define SSL3_ST_CW_KEY_EXCH_A (0x180|SSL_ST_CONNECT) 544 #define SSL3_ST_CW_KEY_EXCH_B (0x181|SSL_ST_CONNECT) 545 #define SSL3_ST_CW_CERT_VRFY_A (0x190|SSL_ST_CONNECT) 546 #define SSL3_ST_CW_CERT_VRFY_B (0x191|SSL_ST_CONNECT) 547 #define SSL3_ST_CW_CHANGE_A (0x1A0|SSL_ST_CONNECT) 548 #define SSL3_ST_CW_CHANGE_B (0x1A1|SSL_ST_CONNECT) 549 #define SSL3_ST_CW_NEXT_PROTO_A (0x200|SSL_ST_CONNECT) 550 #define SSL3_ST_CW_NEXT_PROTO_B (0x201|SSL_ST_CONNECT) 551 #define SSL3_ST_CW_CHANNEL_ID_A (0x220|SSL_ST_CONNECT) 552 #define SSL3_ST_CW_CHANNEL_ID_B (0x221|SSL_ST_CONNECT) 553 #define SSL3_ST_CW_FINISHED_A (0x1B0|SSL_ST_CONNECT) 554 #define SSL3_ST_CW_FINISHED_B (0x1B1|SSL_ST_CONNECT) 555 /* read from server */ 556 #define SSL3_ST_CR_CHANGE (0x1C0|SSL_ST_CONNECT) 557 #define SSL3_ST_CR_FINISHED_A (0x1D0|SSL_ST_CONNECT) 558 #define SSL3_ST_CR_FINISHED_B (0x1D1|SSL_ST_CONNECT) 559 #define SSL3_ST_CR_SESSION_TICKET_A (0x1E0|SSL_ST_CONNECT) 560 #define SSL3_ST_CR_SESSION_TICKET_B (0x1E1|SSL_ST_CONNECT) 561 #define SSL3_ST_CR_CERT_STATUS_A (0x1F0|SSL_ST_CONNECT) 562 #define SSL3_ST_CR_CERT_STATUS_B (0x1F1|SSL_ST_CONNECT) 563 564 /* server */ 565 /* extra state */ 566 #define SSL3_ST_SW_FLUSH (0x100|SSL_ST_ACCEPT) 567 /* read from client */ 568 /* Do not change the number values, they do matter */ 569 #define SSL3_ST_SR_CLNT_HELLO_A (0x110|SSL_ST_ACCEPT) 570 #define SSL3_ST_SR_CLNT_HELLO_B (0x111|SSL_ST_ACCEPT) 571 #define SSL3_ST_SR_CLNT_HELLO_C (0x112|SSL_ST_ACCEPT) 572 #define SSL3_ST_SR_CLNT_HELLO_D (0x115|SSL_ST_ACCEPT) 573 /* write to client */ 574 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_A (0x113|SSL_ST_ACCEPT) 575 #define DTLS1_ST_SW_HELLO_VERIFY_REQUEST_B (0x114|SSL_ST_ACCEPT) 576 #define SSL3_ST_SW_HELLO_REQ_A (0x120|SSL_ST_ACCEPT) 577 #define SSL3_ST_SW_HELLO_REQ_B (0x121|SSL_ST_ACCEPT) 578 #define SSL3_ST_SW_HELLO_REQ_C (0x122|SSL_ST_ACCEPT) 579 #define SSL3_ST_SW_SRVR_HELLO_A (0x130|SSL_ST_ACCEPT) 580 #define SSL3_ST_SW_SRVR_HELLO_B (0x131|SSL_ST_ACCEPT) 581 #define SSL3_ST_SW_CERT_A (0x140|SSL_ST_ACCEPT) 582 #define SSL3_ST_SW_CERT_B (0x141|SSL_ST_ACCEPT) 583 #define SSL3_ST_SW_KEY_EXCH_A (0x150|SSL_ST_ACCEPT) 584 #define SSL3_ST_SW_KEY_EXCH_B (0x151|SSL_ST_ACCEPT) 585 #define SSL3_ST_SW_CERT_REQ_A (0x160|SSL_ST_ACCEPT) 586 #define SSL3_ST_SW_CERT_REQ_B (0x161|SSL_ST_ACCEPT) 587 #define SSL3_ST_SW_SRVR_DONE_A (0x170|SSL_ST_ACCEPT) 588 #define SSL3_ST_SW_SRVR_DONE_B (0x171|SSL_ST_ACCEPT) 589 /* read from client */ 590 #define SSL3_ST_SR_CERT_A (0x180|SSL_ST_ACCEPT) 591 #define SSL3_ST_SR_CERT_B (0x181|SSL_ST_ACCEPT) 592 #define SSL3_ST_SR_KEY_EXCH_A (0x190|SSL_ST_ACCEPT) 593 #define SSL3_ST_SR_KEY_EXCH_B (0x191|SSL_ST_ACCEPT) 594 #define SSL3_ST_SR_CERT_VRFY_A (0x1A0|SSL_ST_ACCEPT) 595 #define SSL3_ST_SR_CERT_VRFY_B (0x1A1|SSL_ST_ACCEPT) 596 #define SSL3_ST_SR_CHANGE (0x1B0|SSL_ST_ACCEPT) 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 #define SSL3_ST_SR_CHANNEL_ID_A (0x230|SSL_ST_ACCEPT) 600 #define SSL3_ST_SR_CHANNEL_ID_B (0x231|SSL_ST_ACCEPT) 601 #define SSL3_ST_SR_FINISHED_A (0x1C0|SSL_ST_ACCEPT) 602 #define SSL3_ST_SR_FINISHED_B (0x1C1|SSL_ST_ACCEPT) 603 /* write to client */ 604 #define SSL3_ST_SW_CHANGE_A (0x1D0|SSL_ST_ACCEPT) 605 #define SSL3_ST_SW_CHANGE_B (0x1D1|SSL_ST_ACCEPT) 606 #define SSL3_ST_SW_FINISHED_A (0x1E0|SSL_ST_ACCEPT) 607 #define SSL3_ST_SW_FINISHED_B (0x1E1|SSL_ST_ACCEPT) 608 #define SSL3_ST_SW_SESSION_TICKET_A (0x1F0|SSL_ST_ACCEPT) 609 #define SSL3_ST_SW_SESSION_TICKET_B (0x1F1|SSL_ST_ACCEPT) 610 #define SSL3_ST_SW_CERT_STATUS_A (0x200|SSL_ST_ACCEPT) 611 #define SSL3_ST_SW_CERT_STATUS_B (0x201|SSL_ST_ACCEPT) 612 #define SSL3_ST_SW_SUPPLEMENTAL_DATA_A (0x220|SSL_ST_ACCEPT) 613 #define SSL3_ST_SW_SUPPLEMENTAL_DATA_B (0x221|SSL_ST_ACCEPT) 614 615 #define SSL3_MT_HELLO_REQUEST 0 616 #define SSL3_MT_CLIENT_HELLO 1 617 #define SSL3_MT_SERVER_HELLO 2 618 #define SSL3_MT_NEWSESSION_TICKET 4 619 #define SSL3_MT_CERTIFICATE 11 620 #define SSL3_MT_SERVER_KEY_EXCHANGE 12 621 #define SSL3_MT_CERTIFICATE_REQUEST 13 622 #define SSL3_MT_SERVER_DONE 14 623 #define SSL3_MT_CERTIFICATE_VERIFY 15 624 #define SSL3_MT_CLIENT_KEY_EXCHANGE 16 625 #define SSL3_MT_FINISHED 20 626 #define SSL3_MT_CERTIFICATE_STATUS 22 627 #define SSL3_MT_SUPPLEMENTAL_DATA 23 628 #define SSL3_MT_NEXT_PROTO 67 629 #define SSL3_MT_ENCRYPTED_EXTENSIONS 203 630 #define DTLS1_MT_HELLO_VERIFY_REQUEST 3 631 632 633 #define SSL3_MT_CCS 1 634 635 /* These are used when changing over to a new cipher */ 636 #define SSL3_CC_READ 0x01 637 #define SSL3_CC_WRITE 0x02 638 #define SSL3_CC_CLIENT 0x10 639 #define SSL3_CC_SERVER 0x20 640 #define SSL3_CHANGE_CIPHER_CLIENT_WRITE (SSL3_CC_CLIENT|SSL3_CC_WRITE) 641 #define SSL3_CHANGE_CIPHER_SERVER_READ (SSL3_CC_SERVER|SSL3_CC_READ) 642 #define SSL3_CHANGE_CIPHER_CLIENT_READ (SSL3_CC_CLIENT|SSL3_CC_READ) 643 #define SSL3_CHANGE_CIPHER_SERVER_WRITE (SSL3_CC_SERVER|SSL3_CC_WRITE) 644 645 #ifdef __cplusplus 646 } 647 #endif 648 #endif 649
