ssl/ssl_locl.h

   1 /* ssl/ssl_locl.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) 1998-2007 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  * Copyright 2005 Nokia. All rights reserved.
 118  *
 119  * The portions of the attached software ("Contribution") is developed by
 120  * Nokia Corporation and is licensed pursuant to the OpenSSL open source
 121  * license.
 122  *
 123  * The Contribution, originally written by Mika Kousa and Pasi Eronen of
 124  * Nokia Corporation, consists of the "PSK" (Pre-Shared Key) ciphersuites
 125  * support (see RFC 4279) to OpenSSL.
 126  *
 127  * No patent licenses or other rights except those expressly stated in
 128  * the OpenSSL open source license shall be deemed granted or received
 129  * expressly, by implication, estoppel, or otherwise.
 130  *
 131  * No assurances are provided by Nokia that the Contribution does not
 132  * infringe the patent or other intellectual property rights of any third
 133  * party or that the license provides you with all the necessary rights
 134  * to make use of the Contribution.
 135  *
 136  * THE SOFTWARE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. IN
 137  * ADDITION TO THE DISCLAIMERS INCLUDED IN THE LICENSE, NOKIA
 138  * SPECIFICALLY DISCLAIMS ANY LIABILITY FOR CLAIMS BROUGHT BY YOU OR ANY
 139  * OTHER ENTITY BASED ON INFRINGEMENT OF INTELLECTUAL PROPERTY RIGHTS OR
 140  * OTHERWISE.
 141  */
 142
 143 #ifndef HEADER_SSL_LOCL_H
 144 #define HEADER_SSL_LOCL_H
 145 #include <stdlib.h>
 146 #include <time.h>
 147 #include <string.h>
 148 #include <errno.h>
 149
 150 #include "e_os.h"
 151
 152 #include <openssl/buffer.h>
 153 #ifndef OPENSSL_NO_COMP
 154 #include <openssl/comp.h>
 155 #endif
 156 #include <openssl/bio.h>
 157 #include <openssl/stack.h>
 158 #ifndef OPENSSL_NO_RSA
 159 #include <openssl/rsa.h>
 160 #endif
 161 #ifndef OPENSSL_NO_DSA
 162 #include <openssl/dsa.h>
 163 #endif
 164 #include <openssl/err.h>
 165 #include <openssl/ssl.h>
 166 #include <openssl/symhacks.h>
 167
 168 #ifdef OPENSSL_BUILD_SHLIBSSL
 169 # undef OPENSSL_EXTERN
 170 # define OPENSSL_EXTERN OPENSSL_EXPORT
 171 #endif
 172
 173 #undef PKCS1_CHECK
 174
 175 #define c2l(c,l)        (l = ((unsigned long)(*((c)++)))     , \
 176                          l|=(((unsigned long)(*((c)++)))<< 8), \
 177                          l|=(((unsigned long)(*((c)++)))<<16), \
 178                          l|=(((unsigned long)(*((c)++)))<<24))
 179
 180 /* NOTE - c is not incremented as per c2l */
 181 #define c2ln(c,l1,l2,n) { \
 182                         c+=n; \
 183                         l1=l2=0; \
 184                         switch (n) { \
 185                         case 8: l2 =((unsigned long)(*(--(c))))<<24; \
 186                         case 7: l2|=((unsigned long)(*(--(c))))<<16; \
 187                         case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
 188                         case 5: l2|=((unsigned long)(*(--(c))));     \
 189                         case 4: l1 =((unsigned long)(*(--(c))))<<24; \
 190                         case 3: l1|=((unsigned long)(*(--(c))))<<16; \
 191                         case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
 192                         case 1: l1|=((unsigned long)(*(--(c))));     \
 193                                 } \
 194                         }
 195
 196 #define l2c(l,c)        (*((c)++)=(unsigned char)(((l)    )&0xff), \
 197                          *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
 198                          *((c)++)=(unsigned char)(((l)>>16)&0xff), \
 199                          *((c)++)=(unsigned char)(((l)>>24)&0xff))
 200
 201 #define n2l(c,l)        (l =((unsigned long)(*((c)++)))<<24, \
 202                          l|=((unsigned long)(*((c)++)))<<16, \
 203                          l|=((unsigned long)(*((c)++)))<< 8, \
 204                          l|=((unsigned long)(*((c)++))))
 205
 206 #define l2n(l,c)        (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
 207                          *((c)++)=(unsigned char)(((l)>>16)&0xff), \
 208                          *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
 209                          *((c)++)=(unsigned char)(((l)    )&0xff))
 210
 211 #define l2n6(l,c)       (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
 212                          *((c)++)=(unsigned char)(((l)>>32)&0xff), \
 213                          *((c)++)=(unsigned char)(((l)>>24)&0xff), \
 214                          *((c)++)=(unsigned char)(((l)>>16)&0xff), \
 215                          *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
 216                          *((c)++)=(unsigned char)(((l)    )&0xff))
 217
 218 #define n2l6(c,l)       (l =((BN_ULLONG)(*((c)++)))<<40, \
 219                          l|=((BN_ULLONG)(*((c)++)))<<32, \
 220                          l|=((BN_ULLONG)(*((c)++)))<<24, \
 221                          l|=((BN_ULLONG)(*((c)++)))<<16, \
 222                          l|=((BN_ULLONG)(*((c)++)))<< 8, \
 223                          l|=((BN_ULLONG)(*((c)++))))
 224
 225 /* NOTE - c is not incremented as per l2c */
 226 #define l2cn(l1,l2,c,n) { \
 227                         c+=n; \
 228                         switch (n) { \
 229                         case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
 230                         case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
 231                         case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
 232                         case 5: *(--(c))=(unsigned char)(((l2)    )&0xff); \
 233                         case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
 234                         case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
 235                         case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
 236                         case 1: *(--(c))=(unsigned char)(((l1)    )&0xff); \
 237                                 } \
 238                         }
 239
 240 #define n2s(c,s)        ((s=(((unsigned int)(c[0]))<< 8)| \
 241                             (((unsigned int)(c[1]))    )),c+=2)
 242 #define s2n(s,c)        ((c[0]=(unsigned char)(((s)>> 8)&0xff), \
 243                           c[1]=(unsigned char)(((s)    )&0xff)),c+=2)
 244
 245 #define n2l3(c,l)       ((l =(((unsigned long)(c[0]))<<16)| \
 246                              (((unsigned long)(c[1]))<< 8)| \
 247                              (((unsigned long)(c[2]))    )),c+=3)
 248
 249 #define l2n3(l,c)       ((c[0]=(unsigned char)(((l)>>16)&0xff), \
 250                           c[1]=(unsigned char)(((l)>> 8)&0xff), \
 251                           c[2]=(unsigned char)(((l)    )&0xff)),c+=3)
 252
 253 /* LOCAL STUFF */
 254
 255 #define SSL_DECRYPT     0
 256 #define SSL_ENCRYPT     1
 257
 258 #define TWO_BYTE_BIT    0x80
 259 #define SEC_ESC_BIT     0x40
 260 #define TWO_BYTE_MASK   0x7fff
 261 #define THREE_BYTE_MASK 0x3fff
 262
 263 #define INC32(a)        ((a)=((a)+1)&0xffffffffL)
 264 #define DEC32(a)        ((a)=((a)-1)&0xffffffffL)
 265 #define MAX_MAC_SIZE    20 /* up from 16 for SSLv3 */
 266
 267 /*
 268  * Define the Bitmasks for SSL_CIPHER.algorithms.
 269  * This bits are used packed as dense as possible. If new methods/ciphers
 270  * etc will be added, the bits a likely to change, so this information
 271  * is for internal library use only, even though SSL_CIPHER.algorithms
 272  * can be publicly accessed.
 273  * Use the according functions for cipher management instead.
 274  *
 275  * The bit mask handling in the selection and sorting scheme in
 276  * ssl_create_cipher_list() has only limited capabilities, reflecting
 277  * that the different entities within are mutually exclusive:
 278  * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
 279  */
 280
 281 /* Bits for algorithm_mkey (key exchange algorithm) */
 282 #define SSL_kRSA                0x00000001L /* RSA key exchange */
 283 #define SSL_kDHr                0x00000002L /* DH cert, RSA CA cert */
 284 #define SSL_kDHd                0x00000004L /* DH cert, DSA CA cert */
 285 #define SSL_kEDH                0x00000008L /* tmp DH key no DH cert */
 286 #define SSL_kKRB5               0x00000010L /* Kerberos5 key exchange */
 287 #define SSL_kECDHr              0x00000020L /* ECDH cert, RSA CA cert */
 288 #define SSL_kECDHe              0x00000040L /* ECDH cert, ECDSA CA cert */
 289 #define SSL_kEECDH              0x00000080L /* ephemeral ECDH */
 290 #define SSL_kPSK                0x00000100L /* PSK */
 291 #define SSL_kGOST       0x00000200L /* GOST key exchange */
 292 #define SSL_kSRP        0x00000400L /* SRP */
 293
 294 /* Bits for algorithm_auth (server authentication) */
 295 #define SSL_aRSA                0x00000001L /* RSA auth */
 296 #define SSL_aDSS                0x00000002L /* DSS auth */
 297 #define SSL_aNULL               0x00000004L /* no auth (i.e. use ADH or AECDH) */
 298 #define SSL_aDH                 0x00000008L /* Fixed DH auth (kDHd or kDHr) */
 299 #define SSL_aECDH               0x00000010L /* Fixed ECDH auth (kECDHe or kECDHr) */
 300 #define SSL_aKRB5               0x00000020L /* KRB5 auth */
 301 #define SSL_aECDSA              0x00000040L /* ECDSA auth*/
 302 #define SSL_aPSK                0x00000080L /* PSK auth */
 303 #define SSL_aGOST94                             0x00000100L /* GOST R 34.10-94 signature auth */
 304 #define SSL_aGOST01                     0x00000200L /* GOST R 34.10-2001 signature auth */
 305
 306
 307 /* Bits for algorithm_enc (symmetric encryption) */
 308 #define SSL_DES                 0x00000001L
 309 #define SSL_3DES                0x00000002L
 310 #define SSL_RC4                 0x00000004L
 311 #define SSL_RC2                 0x00000008L
 312 #define SSL_IDEA                0x00000010L
 313 #define SSL_eNULL               0x00000020L
 314 #define SSL_AES128              0x00000040L
 315 #define SSL_AES256              0x00000080L
 316 #define SSL_CAMELLIA128         0x00000100L
 317 #define SSL_CAMELLIA256         0x00000200L
 318 #define SSL_eGOST2814789CNT     0x00000400L
 319 #define SSL_SEED                0x00000800L
 320 #define SSL_AES128GCM           0x00001000L
 321 #define SSL_AES256GCM           0x00002000L
 322
 323 #define SSL_AES                 (SSL_AES128|SSL_AES256|SSL_AES128GCM|SSL_AES256GCM)
 324 #define SSL_CAMELLIA            (SSL_CAMELLIA128|SSL_CAMELLIA256)
 325
 326
 327 /* Bits for algorithm_mac (symmetric authentication) */
 328
 329 #define SSL_MD5                 0x00000001L
 330 #define SSL_SHA1                0x00000002L
 331 #define SSL_GOST94      0x00000004L
 332 #define SSL_GOST89MAC   0x00000008L
 333 #define SSL_SHA256              0x00000010L
 334 #define SSL_SHA384              0x00000020L
 335 /* Not a real MAC, just an indication it is part of cipher */
 336 #define SSL_AEAD                0x00000040L
 337
 338 /* Bits for algorithm_ssl (protocol version) */
 339 #define SSL_SSLV2               0x00000001L
 340 #define SSL_SSLV3               0x00000002L
 341 #define SSL_TLSV1               SSL_SSLV3       /* for now */
 342 #define SSL_TLSV1_2             0x00000004L
 343
 344
 345 /* Bits for algorithm2 (handshake digests and other extra flags) */
 346
 347 #define SSL_HANDSHAKE_MAC_MD5 0x10
 348 #define SSL_HANDSHAKE_MAC_SHA 0x20
 349 #define SSL_HANDSHAKE_MAC_GOST94 0x40
 350 #define SSL_HANDSHAKE_MAC_SHA256 0x80
 351 #define SSL_HANDSHAKE_MAC_SHA384 0x100
 352 #define SSL_HANDSHAKE_MAC_DEFAULT (SSL_HANDSHAKE_MAC_MD5 | SSL_HANDSHAKE_MAC_SHA)
 353
 354 /* When adding new digest in the ssl_ciph.c and increment SSM_MD_NUM_IDX
 355  * make sure to update this constant too */
 356 #define SSL_MAX_DIGEST 6
 357
 358 #define TLS1_PRF_DGST_SHIFT 10
 359 #define TLS1_PRF_MD5 (SSL_HANDSHAKE_MAC_MD5 << TLS1_PRF_DGST_SHIFT)
 360 #define TLS1_PRF_SHA1 (SSL_HANDSHAKE_MAC_SHA << TLS1_PRF_DGST_SHIFT)
 361 #define TLS1_PRF_SHA256 (SSL_HANDSHAKE_MAC_SHA256 << TLS1_PRF_DGST_SHIFT)
 362 #define TLS1_PRF_SHA384 (SSL_HANDSHAKE_MAC_SHA384 << TLS1_PRF_DGST_SHIFT)
 363 #define TLS1_PRF_GOST94 (SSL_HANDSHAKE_MAC_GOST94 << TLS1_PRF_DGST_SHIFT)
 364 #define TLS1_PRF (TLS1_PRF_MD5 | TLS1_PRF_SHA1)
 365
 366 /* Stream MAC for GOST ciphersuites from cryptopro draft
 367  * (currently this also goes into algorithm2) */
 368 #define TLS1_STREAM_MAC 0x04
 369
 370
 371
 372 /*
 373  * Export and cipher strength information. For each cipher we have to decide
 374  * whether it is exportable or not. This information is likely to change
 375  * over time, since the export control rules are no static technical issue.
 376  *
 377  * Independent of the export flag the cipher strength is sorted into classes.
 378  * SSL_EXP40 was denoting the 40bit US export limit of past times, which now
 379  * is at 56bit (SSL_EXP56). If the exportable cipher class is going to change
 380  * again (eg. to 64bit) the use of "SSL_EXP*" becomes blurred even more,
 381  * since SSL_EXP64 could be similar to SSL_LOW.
 382  * For this reason SSL_MICRO and SSL_MINI macros are included to widen the
 383  * namespace of SSL_LOW-SSL_HIGH to lower values. As development of speed
 384  * and ciphers goes, another extension to SSL_SUPER and/or SSL_ULTRA would
 385  * be possible.
 386  */
 387 #define SSL_EXP_MASK            0x00000003L
 388 #define SSL_STRONG_MASK         0x000001fcL
 389
 390 #define SSL_NOT_EXP             0x00000001L
 391 #define SSL_EXPORT              0x00000002L
 392
 393 #define SSL_STRONG_NONE         0x00000004L
 394 #define SSL_EXP40               0x00000008L
 395 #define SSL_MICRO               (SSL_EXP40)
 396 #define SSL_EXP56               0x00000010L
 397 #define SSL_MINI                (SSL_EXP56)
 398 #define SSL_LOW                 0x00000020L
 399 #define SSL_MEDIUM              0x00000040L
 400 #define SSL_HIGH                0x00000080L
 401 #define SSL_FIPS                0x00000100L
 402
 403 /* we have used 000001ff - 23 bits left to go */
 404
 405 /*
 406  * Macros to check the export status and cipher strength for export ciphers.
 407  * Even though the macros for EXPORT and EXPORT40/56 have similar names,
 408  * their meaning is different:
 409  * *_EXPORT macros check the 'exportable' status.
 410  * *_EXPORT40/56 macros are used to check whether a certain cipher strength
 411  *          is given.
 412  * Since the SSL_IS_EXPORT* and SSL_EXPORT* macros depend on the correct
 413  * algorithm structure element to be passed (algorithms, algo_strength) and no
 414  * typechecking can be done as they are all of type unsigned long, their
 415  * direct usage is discouraged.
 416  * Use the SSL_C_* macros instead.
 417  */
 418 #define SSL_IS_EXPORT(a)        ((a)&SSL_EXPORT)
 419 #define SSL_IS_EXPORT56(a)      ((a)&SSL_EXP56)
 420 #define SSL_IS_EXPORT40(a)      ((a)&SSL_EXP40)
 421 #define SSL_C_IS_EXPORT(c)      SSL_IS_EXPORT((c)->algo_strength)
 422 #define SSL_C_IS_EXPORT56(c)    SSL_IS_EXPORT56((c)->algo_strength)
 423 #define SSL_C_IS_EXPORT40(c)    SSL_IS_EXPORT40((c)->algo_strength)
 424
 425 #define SSL_EXPORT_KEYLENGTH(a,s)       (SSL_IS_EXPORT40(s) ? 5 : \
 426                                  (a) == SSL_DES ? 8 : 7)
 427 #define SSL_EXPORT_PKEYLENGTH(a) (SSL_IS_EXPORT40(a) ? 512 : 1024)
 428 #define SSL_C_EXPORT_KEYLENGTH(c)       SSL_EXPORT_KEYLENGTH((c)->algorithm_enc, \
 429                                 (c)->algo_strength)
 430 #define SSL_C_EXPORT_PKEYLENGTH(c)      SSL_EXPORT_PKEYLENGTH((c)->algo_strength)
 431
 432
 433
 434
 435 /* Mostly for SSLv3 */
 436 #define SSL_PKEY_RSA_ENC        0
 437 #define SSL_PKEY_RSA_SIGN       1
 438 #define SSL_PKEY_DSA_SIGN       2
 439 #define SSL_PKEY_DH_RSA         3
 440 #define SSL_PKEY_DH_DSA         4
 441 #define SSL_PKEY_ECC            5
 442 #define SSL_PKEY_GOST94         6
 443 #define SSL_PKEY_GOST01         7
 444 #define SSL_PKEY_NUM            8
 445
 446 /* SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) |
 447  *          <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN)
 448  * SSL_kDH  <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
 449  * SSL_kEDH <- RSA_ENC | RSA_SIGN | DSA_SIGN
 450  * SSL_aRSA <- RSA_ENC | RSA_SIGN
 451  * SSL_aDSS <- DSA_SIGN
 452  */
 453
 454 /*
 455 #define CERT_INVALID            0
 456 #define CERT_PUBLIC_KEY         1
 457 #define CERT_PRIVATE_KEY        2
 458 */
 459
 460 #ifndef OPENSSL_NO_EC
 461 /* From ECC-TLS draft, used in encoding the curve type in
 462  * ECParameters
 463  */
 464 #define EXPLICIT_PRIME_CURVE_TYPE  1
 465 #define EXPLICIT_CHAR2_CURVE_TYPE  2
 466 #define NAMED_CURVE_TYPE           3
 467 #endif  /* OPENSSL_NO_EC */
 468
 469 typedef struct cert_pkey_st
 470         {
 471         X509 *x509;
 472         EVP_PKEY *privatekey;
 473         /* Digest to use when signing */
 474         const EVP_MD *digest;
 475         /* Chain for this certificate */
 476         STACK_OF(X509) *chain;
 477 #ifndef OPENSSL_NO_TLSEXT
 478         /* authz/authz_length contain authz data for this certificate. The data
 479          * is in wire format, specifically it's a series of records like:
 480          *   uint8_t authz_type;  // (RFC 5878, AuthzDataFormat)
 481          *   uint16_t length;
 482          *   uint8_t data[length]; */
 483         unsigned char *authz;
 484         size_t authz_length;
 485 #endif
 486         } CERT_PKEY;
 487
 488 typedef struct cert_st
 489         {
 490         /* Current active set */
 491         CERT_PKEY *key; /* ALWAYS points to an element of the pkeys array
 492                          * Probably it would make more sense to store
 493                          * an index, not a pointer. */
 494
 495         /* The following masks are for the key and auth
 496          * algorithms that are supported by the certs below */
 497         int valid;
 498         unsigned long mask_k;
 499         unsigned long mask_a;
 500         unsigned long export_mask_k;
 501         unsigned long export_mask_a;
 502 #ifndef OPENSSL_NO_RSA
 503         RSA *rsa_tmp;
 504         RSA *(*rsa_tmp_cb)(SSL *ssl,int is_export,int keysize);
 505 #endif
 506 #ifndef OPENSSL_NO_DH
 507         DH *dh_tmp;
 508         DH *(*dh_tmp_cb)(SSL *ssl,int is_export,int keysize);
 509 #endif
 510 #ifndef OPENSSL_NO_ECDH
 511         EC_KEY *ecdh_tmp;
 512         /* Callback for generating ephemeral ECDH keys */
 513         EC_KEY *(*ecdh_tmp_cb)(SSL *ssl,int is_export,int keysize);
 514         /* Select ECDH parameters automatically */
 515         int ecdh_tmp_auto;
 516 #endif
 517
 518         CERT_PKEY pkeys[SSL_PKEY_NUM];
 519
 520         /* Array of pairs of NIDs for signature algorithm extension */
 521         TLS_SIGALGS *sigalgs;
 522         /* Size of above array */
 523         size_t sigalgslen;
 524
 525         int references; /* >1 only if SSL_copy_session_id is used */
 526         } CERT;
 527
 528
 529 typedef struct sess_cert_st
 530         {
 531         STACK_OF(X509) *cert_chain; /* as received from peer (not for SSL2) */
 532
 533         /* The 'peer_...' members are used only by clients. */
 534         int peer_cert_type;
 535
 536         CERT_PKEY *peer_key; /* points to an element of peer_pkeys (never NULL!) */
 537         CERT_PKEY peer_pkeys[SSL_PKEY_NUM];
 538         /* Obviously we don't have the private keys of these,
 539          * so maybe we shouldn't even use the CERT_PKEY type here. */
 540
 541 #ifndef OPENSSL_NO_RSA
 542         RSA *peer_rsa_tmp; /* not used for SSL 2 */
 543 #endif
 544 #ifndef OPENSSL_NO_DH
 545         DH *peer_dh_tmp; /* not used for SSL 2 */
 546 #endif
 547 #ifndef OPENSSL_NO_ECDH
 548         EC_KEY *peer_ecdh_tmp;
 549 #endif
 550
 551         int references; /* actually always 1 at the moment */
 552         } SESS_CERT;
 553 /* Structure containing decoded values of signature algorithms extension */
 554 struct tls_sigalgs_st
 555         {
 556         /* NID of hash algorithm */
 557         int hash_nid;
 558         /* NID of signature algorithm */
 559         int sign_nid;
 560         /* Combined hash and signature NID */
 561         int signandhash_nid;
 562         /* Raw values used in extension */
 563         unsigned char rsign;
 564         unsigned char rhash;
 565         };
 566
 567 /*#define MAC_DEBUG     */
 568
 569 /*#define ERR_DEBUG     */
 570 /*#define ABORT_DEBUG   */
 571 /*#define PKT_DEBUG 1   */
 572 /*#define DES_DEBUG     */
 573 /*#define DES_OFB_DEBUG */
 574 /*#define SSL_DEBUG     */
 575 /*#define RSA_DEBUG     */
 576 /*#define IDEA_DEBUG    */
 577
 578 #define FP_ICC  (int (*)(const void *,const void *))
 579 #define ssl_put_cipher_by_char(ssl,ciph,ptr) \
 580                 ((ssl)->method->put_cipher_by_char((ciph),(ptr)))
 581 #define ssl_get_cipher_by_char(ssl,ptr) \
 582                 ((ssl)->method->get_cipher_by_char(ptr))
 583
 584 /* This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff
 585  * It is a bit of a mess of functions, but hell, think of it as
 586  * an opaque structure :-) */
 587 typedef struct ssl3_enc_method
 588         {
 589         int (*enc)(SSL *, int);
 590         int (*mac)(SSL *, unsigned char *, int);
 591         int (*setup_key_block)(SSL *);
 592         int (*generate_master_secret)(SSL *, unsigned char *, unsigned char *, int);
 593         int (*change_cipher_state)(SSL *, int);
 594         int (*final_finish_mac)(SSL *,  const char *, int, unsigned char *);
 595         int finish_mac_length;
 596         int (*cert_verify_mac)(SSL *, int, unsigned char *);
 597         const char *client_finished_label;
 598         int client_finished_label_len;
 599         const char *server_finished_label;
 600         int server_finished_label_len;
 601         int (*alert_value)(int);
 602         int (*export_keying_material)(SSL *, unsigned char *, size_t,
 603                                       const char *, size_t,
 604                                       const unsigned char *, size_t,
 605                                       int use_context);
 606         } SSL3_ENC_METHOD;
 607
 608 #ifndef OPENSSL_NO_COMP
 609 /* Used for holding the relevant compression methods loaded into SSL_CTX */
 610 typedef struct ssl3_comp_st
 611         {
 612         int comp_id;    /* The identifier byte for this compression type */
 613         char *name;     /* Text name used for the compression type */
 614         COMP_METHOD *method; /* The method :-) */
 615         } SSL3_COMP;
 616 #endif
 617
 618 #ifndef OPENSSL_NO_BUF_FREELISTS
 619 typedef struct ssl3_buf_freelist_st
 620         {
 621         size_t chunklen;
 622         unsigned int len;
 623         struct ssl3_buf_freelist_entry_st *head;
 624         } SSL3_BUF_FREELIST;
 625
 626 typedef struct ssl3_buf_freelist_entry_st
 627         {
 628         struct ssl3_buf_freelist_entry_st *next;
 629         } SSL3_BUF_FREELIST_ENTRY;
 630 #endif
 631
 632 extern SSL3_ENC_METHOD ssl3_undef_enc_method;
 633 OPENSSL_EXTERN const SSL_CIPHER ssl2_ciphers[];
 634 OPENSSL_EXTERN SSL_CIPHER ssl3_ciphers[];
 635
 636
 637 SSL_METHOD *ssl_bad_method(int ver);
 638
 639 extern SSL3_ENC_METHOD TLSv1_enc_data;
 640 extern SSL3_ENC_METHOD SSLv3_enc_data;
 641 extern SSL3_ENC_METHOD DTLSv1_enc_data;
 642
 643 #define IMPLEMENT_tls_meth_func(version, func_name, s_accept, s_connect, \
 644                                 s_get_meth) \
 645 const SSL_METHOD *func_name(void)  \
 646         { \
 647         static const SSL_METHOD func_name##_data= { \
 648                 version, \
 649                 tls1_new, \
 650                 tls1_clear, \
 651                 tls1_free, \
 652                 s_accept, \
 653                 s_connect, \
 654                 ssl3_read, \
 655                 ssl3_peek, \
 656                 ssl3_write, \
 657                 ssl3_shutdown, \
 658                 ssl3_renegotiate, \
 659                 ssl3_renegotiate_check, \
 660                 ssl3_get_message, \
 661                 ssl3_read_bytes, \
 662                 ssl3_write_bytes, \
 663                 ssl3_dispatch_alert, \
 664                 ssl3_ctrl, \
 665                 ssl3_ctx_ctrl, \
 666                 ssl3_get_cipher_by_char, \
 667                 ssl3_put_cipher_by_char, \
 668                 ssl3_pending, \
 669                 ssl3_num_ciphers, \
 670                 ssl3_get_cipher, \
 671                 s_get_meth, \
 672                 tls1_default_timeout, \
 673                 &TLSv1_enc_data, \
 674                 ssl_undefined_void_function, \
 675                 ssl3_callback_ctrl, \
 676                 ssl3_ctx_callback_ctrl, \
 677         }; \
 678         return &func_name##_data; \
 679         }
 680
 681 #define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect, s_get_meth) \
 682 const SSL_METHOD *func_name(void)  \
 683         { \
 684         static const SSL_METHOD func_name##_data= { \
 685                 SSL3_VERSION, \
 686                 ssl3_new, \
 687                 ssl3_clear, \
 688                 ssl3_free, \
 689                 s_accept, \
 690                 s_connect, \
 691                 ssl3_read, \
 692                 ssl3_peek, \
 693                 ssl3_write, \
 694                 ssl3_shutdown, \
 695                 ssl3_renegotiate, \
 696                 ssl3_renegotiate_check, \
 697                 ssl3_get_message, \
 698                 ssl3_read_bytes, \
 699                 ssl3_write_bytes, \
 700                 ssl3_dispatch_alert, \
 701                 ssl3_ctrl, \
 702                 ssl3_ctx_ctrl, \
 703                 ssl3_get_cipher_by_char, \
 704                 ssl3_put_cipher_by_char, \
 705                 ssl3_pending, \
 706                 ssl3_num_ciphers, \
 707                 ssl3_get_cipher, \
 708                 s_get_meth, \
 709                 ssl3_default_timeout, \
 710                 &SSLv3_enc_data, \
 711                 ssl_undefined_void_function, \
 712                 ssl3_callback_ctrl, \
 713                 ssl3_ctx_callback_ctrl, \
 714         }; \
 715         return &func_name##_data; \
 716         }
 717
 718 #define IMPLEMENT_ssl23_meth_func(func_name, s_accept, s_connect, s_get_meth) \
 719 const SSL_METHOD *func_name(void)  \
 720         { \
 721         static const SSL_METHOD func_name##_data= { \
 722         TLS1_2_VERSION, \
 723         tls1_new, \
 724         tls1_clear, \
 725         tls1_free, \
 726         s_accept, \
 727         s_connect, \
 728         ssl23_read, \
 729         ssl23_peek, \
 730         ssl23_write, \
 731         ssl_undefined_function, \
 732         ssl_undefined_function, \
 733         ssl_ok, \
 734         ssl3_get_message, \
 735         ssl3_read_bytes, \
 736         ssl3_write_bytes, \
 737         ssl3_dispatch_alert, \
 738         ssl3_ctrl, \
 739         ssl3_ctx_ctrl, \
 740         ssl23_get_cipher_by_char, \
 741         ssl23_put_cipher_by_char, \
 742         ssl_undefined_const_function, \
 743         ssl23_num_ciphers, \
 744         ssl23_get_cipher, \
 745         s_get_meth, \
 746         ssl23_default_timeout, \
 747         &ssl3_undef_enc_method, \
 748         ssl_undefined_void_function, \
 749         ssl3_callback_ctrl, \
 750         ssl3_ctx_callback_ctrl, \
 751         }; \
 752         return &func_name##_data; \
 753         }
 754
 755 #define IMPLEMENT_ssl2_meth_func(func_name, s_accept, s_connect, s_get_meth) \
 756 const SSL_METHOD *func_name(void)  \
 757         { \
 758         static const SSL_METHOD func_name##_data= { \
 759                 SSL2_VERSION, \
 760                 ssl2_new,       /* local */ \
 761                 ssl2_clear,     /* local */ \
 762                 ssl2_free,      /* local */ \
 763                 s_accept, \
 764                 s_connect, \
 765                 ssl2_read, \
 766                 ssl2_peek, \
 767                 ssl2_write, \
 768                 ssl2_shutdown, \
 769                 ssl_ok, /* NULL - renegotiate */ \
 770                 ssl_ok, /* NULL - check renegotiate */ \
 771                 NULL, /* NULL - ssl_get_message */ \
 772                 NULL, /* NULL - ssl_get_record */ \
 773                 NULL, /* NULL - ssl_write_bytes */ \
 774                 NULL, /* NULL - dispatch_alert */ \
 775                 ssl2_ctrl,      /* local */ \
 776                 ssl2_ctx_ctrl,  /* local */ \
 777                 ssl2_get_cipher_by_char, \
 778                 ssl2_put_cipher_by_char, \
 779                 ssl2_pending, \
 780                 ssl2_num_ciphers, \
 781                 ssl2_get_cipher, \
 782                 s_get_meth, \
 783                 ssl2_default_timeout, \
 784                 &ssl3_undef_enc_method, \
 785                 ssl_undefined_void_function, \
 786                 ssl2_callback_ctrl,     /* local */ \
 787                 ssl2_ctx_callback_ctrl, /* local */ \
 788         }; \
 789         return &func_name##_data; \
 790         }
 791
 792 #define IMPLEMENT_dtls1_meth_func(func_name, s_accept, s_connect, s_get_meth) \
 793 const SSL_METHOD *func_name(void)  \
 794         { \
 795         static const SSL_METHOD func_name##_data= { \
 796                 DTLS1_VERSION, \
 797                 dtls1_new, \
 798                 dtls1_clear, \
 799                 dtls1_free, \
 800                 s_accept, \
 801                 s_connect, \
 802                 ssl3_read, \
 803                 ssl3_peek, \
 804                 ssl3_write, \
 805                 dtls1_shutdown, \
 806                 ssl3_renegotiate, \
 807                 ssl3_renegotiate_check, \
 808                 dtls1_get_message, \
 809                 dtls1_read_bytes, \
 810                 dtls1_write_app_data_bytes, \
 811                 dtls1_dispatch_alert, \
 812                 dtls1_ctrl, \
 813                 ssl3_ctx_ctrl, \
 814                 ssl3_get_cipher_by_char, \
 815                 ssl3_put_cipher_by_char, \
 816                 ssl3_pending, \
 817                 ssl3_num_ciphers, \
 818                 dtls1_get_cipher, \
 819                 s_get_meth, \
 820                 dtls1_default_timeout, \
 821                 &DTLSv1_enc_data, \
 822                 ssl_undefined_void_function, \
 823                 ssl3_callback_ctrl, \
 824                 ssl3_ctx_callback_ctrl, \
 825         }; \
 826         return &func_name##_data; \
 827         }
 828
 829 void ssl_clear_cipher_ctx(SSL *s);
 830 int ssl_clear_bad_session(SSL *s);
 831 CERT *ssl_cert_new(void);
 832 CERT *ssl_cert_dup(CERT *cert);
 833 int ssl_cert_inst(CERT **o);
 834 void ssl_cert_clear_certs(CERT *c);
 835 void ssl_cert_free(CERT *c);
 836 SESS_CERT *ssl_sess_cert_new(void);
 837 void ssl_sess_cert_free(SESS_CERT *sc);
 838 int ssl_set_peer_cert_type(SESS_CERT *c, int type);
 839 int ssl_get_new_session(SSL *s, int session);
 840 int ssl_get_prev_session(SSL *s, unsigned char *session,int len, const unsigned char *limit);
 841 int ssl_cipher_id_cmp(const SSL_CIPHER *a,const SSL_CIPHER *b);
 842 DECLARE_OBJ_BSEARCH_GLOBAL_CMP_FN(SSL_CIPHER, SSL_CIPHER,
 843                                   ssl_cipher_id);
 844 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
 845                         const SSL_CIPHER * const *bp);
 846 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
 847                                                STACK_OF(SSL_CIPHER) **skp);
 848 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
 849                              int (*put_cb)(const SSL_CIPHER *, unsigned char *));
 850 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth,
 851                                              STACK_OF(SSL_CIPHER) **pref,
 852                                              STACK_OF(SSL_CIPHER) **sorted,
 853                                              const char *rule_str);
 854 void ssl_update_cache(SSL *s, int mode);
 855 int ssl_cipher_get_evp(const SSL_SESSION *s,const EVP_CIPHER **enc,
 856                        const EVP_MD **md,int *mac_pkey_type,int *mac_secret_size, SSL_COMP **comp);
 857 int ssl_get_handshake_digest(int i,long *mask,const EVP_MD **md);
 858 int ssl_cert_set0_chain(CERT *c, STACK_OF(X509) *chain);
 859 int ssl_cert_set1_chain(CERT *c, STACK_OF(X509) *chain);
 860 int ssl_cert_add0_chain_cert(CERT *c, X509 *x);
 861 int ssl_cert_add1_chain_cert(CERT *c, X509 *x);
 862
 863 int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk);
 864 int ssl_add_cert_chain(SSL *s, CERT_PKEY *cpk, unsigned long *l);
 865 int ssl_undefined_function(SSL *s);
 866 int ssl_undefined_void_function(void);
 867 int ssl_undefined_const_function(const SSL *s);
 868 CERT_PKEY *ssl_get_server_send_pkey(SSL *);
 869 unsigned char *ssl_get_authz_data(SSL *s, size_t *authz_length);
 870 EVP_PKEY *ssl_get_sign_pkey(SSL *s,const SSL_CIPHER *c, const EVP_MD **pmd);
 871 int ssl_cert_type(X509 *x,EVP_PKEY *pkey);
 872 void ssl_set_cert_masks(CERT *c, const SSL_CIPHER *cipher);
 873 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
 874 int ssl_verify_alarm_type(long type);
 875 void ssl_load_ciphers(void);
 876
 877 int ssl2_enc_init(SSL *s, int client);
 878 int ssl2_generate_key_material(SSL *s);
 879 void ssl2_enc(SSL *s,int send_data);
 880 void ssl2_mac(SSL *s,unsigned char *mac,int send_data);
 881 const SSL_CIPHER *ssl2_get_cipher_by_char(const unsigned char *p);
 882 int ssl2_put_cipher_by_char(const SSL_CIPHER *c,unsigned char *p);
 883 int ssl2_part_read(SSL *s, unsigned long f, int i);
 884 int ssl2_do_write(SSL *s);
 885 int ssl2_set_certificate(SSL *s, int type, int len, const unsigned char *data);
 886 void ssl2_return_error(SSL *s,int reason);
 887 void ssl2_write_error(SSL *s);
 888 int ssl2_num_ciphers(void);
 889 const SSL_CIPHER *ssl2_get_cipher(unsigned int u);
 890 int     ssl2_new(SSL *s);
 891 void    ssl2_free(SSL *s);
 892 int     ssl2_accept(SSL *s);
 893 int     ssl2_connect(SSL *s);
 894 int     ssl2_read(SSL *s, void *buf, int len);
 895 int     ssl2_peek(SSL *s, void *buf, int len);
 896 int     ssl2_write(SSL *s, const void *buf, int len);
 897 int     ssl2_shutdown(SSL *s);
 898 void    ssl2_clear(SSL *s);
 899 long    ssl2_ctrl(SSL *s,int cmd, long larg, void *parg);
 900 long    ssl2_ctx_ctrl(SSL_CTX *s,int cmd, long larg, void *parg);
 901 long    ssl2_callback_ctrl(SSL *s,int cmd, void (*fp)(void));
 902 long    ssl2_ctx_callback_ctrl(SSL_CTX *s,int cmd, void (*fp)(void));
 903 int     ssl2_pending(const SSL *s);
 904 long    ssl2_default_timeout(void );
 905
 906 const SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
 907 int ssl3_put_cipher_by_char(const SSL_CIPHER *c,unsigned char *p);
 908 void ssl3_init_finished_mac(SSL *s);
 909 int ssl3_send_server_certificate(SSL *s);
 910 int ssl3_send_newsession_ticket(SSL *s);
 911 int ssl3_send_cert_status(SSL *s);
 912 int ssl3_get_finished(SSL *s,int state_a,int state_b);
 913 int ssl3_setup_key_block(SSL *s);
 914 int ssl3_send_change_cipher_spec(SSL *s,int state_a,int state_b);
 915 int ssl3_change_cipher_state(SSL *s,int which);
 916 void ssl3_cleanup_key_block(SSL *s);
 917 int ssl3_do_write(SSL *s,int type);
 918 int ssl3_send_alert(SSL *s,int level, int desc);
 919 int ssl3_generate_master_secret(SSL *s, unsigned char *out,
 920         unsigned char *p, int len);
 921 int ssl3_get_req_cert_type(SSL *s,unsigned char *p);
 922 long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
 923 int ssl3_send_finished(SSL *s, int a, int b, const char *sender,int slen);
 924 int ssl3_num_ciphers(void);
 925 const SSL_CIPHER *ssl3_get_cipher(unsigned int u);
 926 int ssl3_renegotiate(SSL *ssl);
 927 int ssl3_renegotiate_check(SSL *ssl);
 928 int ssl3_dispatch_alert(SSL *s);
 929 int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
 930 int ssl3_write_bytes(SSL *s, int type, const void *buf, int len);
 931 int ssl3_final_finish_mac(SSL *s, const char *sender, int slen,unsigned char *p);
 932 int ssl3_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
 933 void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len);
 934 int ssl3_enc(SSL *s, int send_data);
 935 int n_ssl3_mac(SSL *ssl, unsigned char *md, int send_data);
 936 void ssl3_free_digest_list(SSL *s);
 937 unsigned long ssl3_output_cert_chain(SSL *s, CERT_PKEY *cpk);
 938 SSL_CIPHER *ssl3_choose_cipher(SSL *ssl,STACK_OF(SSL_CIPHER) *clnt,
 939                                STACK_OF(SSL_CIPHER) *srvr);
 940 int     ssl3_setup_buffers(SSL *s);
 941 int     ssl3_setup_read_buffer(SSL *s);
 942 int     ssl3_setup_write_buffer(SSL *s);
 943 int     ssl3_release_read_buffer(SSL *s);
 944 int     ssl3_release_write_buffer(SSL *s);
 945 int     ssl3_digest_cached_records(SSL *s);
 946 int     ssl3_new(SSL *s);
 947 void    ssl3_free(SSL *s);
 948 int     ssl3_accept(SSL *s);
 949 int     ssl3_connect(SSL *s);
 950 int     ssl3_read(SSL *s, void *buf, int len);
 951 int     ssl3_peek(SSL *s, void *buf, int len);
 952 int     ssl3_write(SSL *s, const void *buf, int len);
 953 int     ssl3_shutdown(SSL *s);
 954 void    ssl3_clear(SSL *s);
 955 long    ssl3_ctrl(SSL *s,int cmd, long larg, void *parg);
 956 long    ssl3_ctx_ctrl(SSL_CTX *s,int cmd, long larg, void *parg);
 957 long    ssl3_callback_ctrl(SSL *s,int cmd, void (*fp)(void));
 958 long    ssl3_ctx_callback_ctrl(SSL_CTX *s,int cmd, void (*fp)(void));
 959 int     ssl3_pending(const SSL *s);
 960
 961 void ssl3_record_sequence_update(unsigned char *seq);
 962 int ssl3_do_change_cipher_spec(SSL *ssl);
 963 long ssl3_default_timeout(void );
 964
 965 int ssl23_num_ciphers(void );
 966 const SSL_CIPHER *ssl23_get_cipher(unsigned int u);
 967 int ssl23_read(SSL *s, void *buf, int len);
 968 int ssl23_peek(SSL *s, void *buf, int len);
 969 int ssl23_write(SSL *s, const void *buf, int len);
 970 int ssl23_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
 971 const SSL_CIPHER *ssl23_get_cipher_by_char(const unsigned char *p);
 972 long ssl23_default_timeout(void );
 973
 974 long tls1_default_timeout(void);
 975 int dtls1_do_write(SSL *s,int type);
 976 int ssl3_read_n(SSL *s, int n, int max, int extend);
 977 int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
 978 int ssl3_do_compress(SSL *ssl);
 979 int ssl3_do_uncompress(SSL *ssl);
 980 int ssl3_write_pending(SSL *s, int type, const unsigned char *buf,
 981         unsigned int len);
 982 unsigned char *dtls1_set_message_header(SSL *s,
 983         unsigned char *p, unsigned char mt,     unsigned long len,
 984         unsigned long frag_off, unsigned long frag_len);
 985
 986 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len);
 987 int dtls1_write_bytes(SSL *s, int type, const void *buf, int len);
 988
 989 int dtls1_send_change_cipher_spec(SSL *s, int a, int b);
 990 int dtls1_send_finished(SSL *s, int a, int b, const char *sender, int slen);
 991 unsigned long dtls1_output_cert_chain(SSL *s, CERT_PKEY *cpk);
 992 int dtls1_read_failed(SSL *s, int code);
 993 int dtls1_buffer_message(SSL *s, int ccs);
 994 int dtls1_retransmit_message(SSL *s, unsigned short seq,
 995         unsigned long frag_off, int *found);
 996 int dtls1_get_queue_priority(unsigned short seq, int is_ccs);
 997 int dtls1_retransmit_buffered_messages(SSL *s);
 998 void dtls1_clear_record_buffer(SSL *s);
 999 void dtls1_get_message_header(unsigned char *data, struct hm_header_st *msg_hdr);
1000 void dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr);
1001 void dtls1_reset_seq_numbers(SSL *s, int rw);
1002 long dtls1_default_timeout(void);
1003 struct timeval* dtls1_get_timeout(SSL *s, struct timeval* timeleft);
1004 int dtls1_check_timeout_num(SSL *s);
1005 int dtls1_handle_timeout(SSL *s);
1006 const SSL_CIPHER *dtls1_get_cipher(unsigned int u);
1007 void dtls1_start_timer(SSL *s);
1008 void dtls1_stop_timer(SSL *s);
1009 int dtls1_is_timer_expired(SSL *s);
1010 void dtls1_double_timeout(SSL *s);
1011 int dtls1_send_newsession_ticket(SSL *s);
1012 unsigned int dtls1_min_mtu(void);
1013
1014 /* some client-only functions */
1015 int ssl3_client_hello(SSL *s);
1016 int ssl3_get_server_hello(SSL *s);
1017 int ssl3_get_certificate_request(SSL *s);
1018 int ssl3_get_new_session_ticket(SSL *s);
1019 int ssl3_get_cert_status(SSL *s);
1020 int ssl3_get_server_done(SSL *s);
1021 int ssl3_send_client_verify(SSL *s);
1022 int ssl3_send_client_certificate(SSL *s);
1023 int ssl_do_client_cert_cb(SSL *s, X509 **px509, EVP_PKEY **ppkey);
1024 int ssl3_send_client_key_exchange(SSL *s);
1025 int ssl3_get_key_exchange(SSL *s);
1026 int ssl3_get_server_certificate(SSL *s);
1027 int ssl3_check_cert_and_algorithm(SSL *s);
1028 #ifndef OPENSSL_NO_TLSEXT
1029 int ssl3_check_finished(SSL *s);
1030 # ifndef OPENSSL_NO_NEXTPROTONEG
1031 int ssl3_send_next_proto(SSL *s);
1032 # endif
1033 #endif
1034
1035 int dtls1_client_hello(SSL *s);
1036 int dtls1_send_client_certificate(SSL *s);
1037 int dtls1_send_client_key_exchange(SSL *s);
1038 int dtls1_send_client_verify(SSL *s);
1039
1040 /* some server-only functions */
1041 int ssl3_get_client_hello(SSL *s);
1042 int ssl3_send_server_hello(SSL *s);
1043 int ssl3_send_hello_request(SSL *s);
1044 int ssl3_send_server_key_exchange(SSL *s);
1045 int ssl3_send_certificate_request(SSL *s);
1046 int ssl3_send_server_done(SSL *s);
1047 int ssl3_check_client_hello(SSL *s);
1048 int ssl3_get_client_certificate(SSL *s);
1049 int ssl3_get_client_key_exchange(SSL *s);
1050 int ssl3_get_cert_verify(SSL *s);
1051 #ifndef OPENSSL_NO_NEXTPROTONEG
1052 int ssl3_get_next_proto(SSL *s);
1053 #endif
1054
1055 int dtls1_send_hello_request(SSL *s);
1056 int dtls1_send_server_hello(SSL *s);
1057 int dtls1_send_server_certificate(SSL *s);
1058 int dtls1_send_server_key_exchange(SSL *s);
1059 int dtls1_send_certificate_request(SSL *s);
1060 int dtls1_send_server_done(SSL *s);
1061
1062
1063
1064 int ssl23_accept(SSL *s);
1065 int ssl23_connect(SSL *s);
1066 int ssl23_read_bytes(SSL *s, int n);
1067 int ssl23_write_bytes(SSL *s);
1068
1069 int tls1_new(SSL *s);
1070 void tls1_free(SSL *s);
1071 void tls1_clear(SSL *s);
1072 long tls1_ctrl(SSL *s,int cmd, long larg, void *parg);
1073 long tls1_callback_ctrl(SSL *s,int cmd, void (*fp)(void));
1074
1075 int dtls1_new(SSL *s);
1076 int     dtls1_accept(SSL *s);
1077 int     dtls1_connect(SSL *s);
1078 void dtls1_free(SSL *s);
1079 void dtls1_clear(SSL *s);
1080 long dtls1_ctrl(SSL *s,int cmd, long larg, void *parg);
1081 int dtls1_shutdown(SSL *s);
1082
1083 long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
1084 int dtls1_get_record(SSL *s);
1085 int do_dtls1_write(SSL *s, int type, const unsigned char *buf,
1086         unsigned int len, int create_empty_fragement);
1087 int dtls1_dispatch_alert(SSL *s);
1088 int dtls1_enc(SSL *s, int snd);
1089
1090 int ssl_init_wbio_buffer(SSL *s, int push);
1091 void ssl_free_wbio_buffer(SSL *s);
1092
1093 int tls1_change_cipher_state(SSL *s, int which);
1094 int tls1_setup_key_block(SSL *s);
1095 int tls1_enc(SSL *s, int snd);
1096 int tls1_final_finish_mac(SSL *s,
1097         const char *str, int slen, unsigned char *p);
1098 int tls1_cert_verify_mac(SSL *s, int md_nid, unsigned char *p);
1099 int tls1_mac(SSL *ssl, unsigned char *md, int snd);
1100 int tls1_generate_master_secret(SSL *s, unsigned char *out,
1101         unsigned char *p, int len);
1102 int tls1_export_keying_material(SSL *s, unsigned char *out, size_t olen,
1103         const char *label, size_t llen,
1104         const unsigned char *p, size_t plen, int use_context);
1105 int tls1_alert_code(int code);
1106 int ssl3_alert_code(int code);
1107 int ssl_ok(SSL *s);
1108
1109 #ifndef OPENSSL_NO_ECDH
1110 int ssl_check_srvr_ecc_cert_and_alg(X509 *x, SSL *s);
1111 #endif
1112
1113 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
1114
1115 #ifndef OPENSSL_NO_EC
1116 int tls1_ec_curve_id2nid(int curve_id);
1117 int tls1_ec_nid2curve_id(int nid);
1118 int tls1_shared_curve(SSL *s, int nmatch);
1119 int tls1_set_curves(unsigned char **pext, size_t *pextlen,
1120                         int *curves, size_t ncurves);
1121 int tls1_set_curves_list(unsigned char **pext, size_t *pextlen,
1122                                 const char *str);
1123 int tls1_check_ec_server_key(SSL *s);
1124 int tls1_check_ec_tmp_key(SSL *s);
1125 #endif /* OPENSSL_NO_EC */
1126
1127 #ifndef OPENSSL_NO_TLSEXT
1128 int tls1_shared_list(SSL *s,
1129                         const unsigned char *l1, size_t l1len,
1130                         const unsigned char *l2, size_t l2len,
1131                         int nmatch);
1132 unsigned char *ssl_add_clienthello_tlsext(SSL *s, unsigned char *p, unsigned char *limit);
1133 unsigned char *ssl_add_serverhello_tlsext(SSL *s, unsigned char *p, unsigned char *limit);
1134 int ssl_parse_clienthello_tlsext(SSL *s, unsigned char **data, unsigned char *d, int n);
1135 int ssl_parse_serverhello_tlsext(SSL *s, unsigned char **data, unsigned char *d, int n);
1136 int ssl_prepare_clienthello_tlsext(SSL *s);
1137 int ssl_prepare_serverhello_tlsext(SSL *s);
1138
1139 /* server only */
1140 int tls1_send_server_supplemental_data(SSL *s);
1141 /* client only */
1142 int tls1_get_server_supplemental_data(SSL *s);
1143
1144 #ifndef OPENSSL_NO_HEARTBEATS
1145 int tls1_heartbeat(SSL *s);
1146 int dtls1_heartbeat(SSL *s);
1147 int tls1_process_heartbeat(SSL *s);
1148 int dtls1_process_heartbeat(SSL *s);
1149 #endif
1150
1151 #ifdef OPENSSL_NO_SHA256
1152 #define tlsext_tick_md  EVP_sha1
1153 #else
1154 #define tlsext_tick_md  EVP_sha256
1155 #endif
1156 int tls1_process_ticket(SSL *s, unsigned char *session_id, int len,
1157                                 const unsigned char *limit, SSL_SESSION **ret);
1158
1159 int tls12_get_sigandhash(unsigned char *p, const EVP_PKEY *pk,
1160                                 const EVP_MD *md);
1161 int tls12_get_sigid(const EVP_PKEY *pk);
1162 const EVP_MD *tls12_get_hash(unsigned char hash_alg);
1163
1164 #endif
1165 EVP_MD_CTX* ssl_replace_hash(EVP_MD_CTX **hash,const EVP_MD *md) ;
1166 void ssl_clear_hash_ctx(EVP_MD_CTX **hash);
1167 int ssl_add_serverhello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
1168                                         int maxlen);
1169 int ssl_parse_serverhello_renegotiate_ext(SSL *s, unsigned char *d, int len,
1170                                           int *al);
1171 int ssl_add_clienthello_renegotiate_ext(SSL *s, unsigned char *p, int *len,
1172                                         int maxlen);
1173 int ssl_parse_clienthello_renegotiate_ext(SSL *s, unsigned char *d, int len,
1174                                           int *al);
1175 long ssl_get_algorithm2(SSL *s);
1176 int tls1_process_sigalgs(SSL *s, const unsigned char *data, int dsize);
1177 int tls12_get_req_sig_algs(SSL *s, unsigned char *p);
1178
1179 int ssl_add_clienthello_use_srtp_ext(SSL *s, unsigned char *p, int *len, int maxlen);
1180 int ssl_parse_clienthello_use_srtp_ext(SSL *s, unsigned char *d, int len,int *al);
1181 int ssl_add_serverhello_use_srtp_ext(SSL *s, unsigned char *p, int *len, int maxlen);
1182 int ssl_parse_serverhello_use_srtp_ext(SSL *s, unsigned char *d, int len,int *al);
1183
1184 #endif