crypto/openssl-0.9/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) 1998-2001 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_SSL_LOCL_H
 118 #define HEADER_SSL_LOCL_H
 119 #include <stdlib.h>
 120 #include <time.h>
 121 #include <string.h>
 122 #include <errno.h>
 123
 124 #include "e_os.h"
 125
 126 #include <openssl/buffer.h>
 127 #include <openssl/comp.h>
 128 #include <openssl/bio.h>
 129 #include <openssl/stack.h>
 130 #ifndef OPENSSL_NO_RSA
 131 #include <openssl/rsa.h>
 132 #endif
 133 #ifndef OPENSSL_NO_DSA
 134 #include <openssl/dsa.h>
 135 #endif
 136 #include <openssl/err.h>
 137 #include <openssl/ssl.h>
 138 #include <openssl/symhacks.h>
 139
 140 #ifdef OPENSSL_BUILD_SHLIBSSL
 141 # undef OPENSSL_EXTERN
 142 # define OPENSSL_EXTERN OPENSSL_EXPORT
 143 #endif
 144
 145 #define PKCS1_CHECK
 146
 147 #define c2l(c,l)        (l = ((unsigned long)(*((c)++)))     , \
 148                          l|=(((unsigned long)(*((c)++)))<< 8), \
 149                          l|=(((unsigned long)(*((c)++)))<<16), \
 150                          l|=(((unsigned long)(*((c)++)))<<24))
 151
 152 /* NOTE - c is not incremented as per c2l */
 153 #define c2ln(c,l1,l2,n) { \
 154                         c+=n; \
 155                         l1=l2=0; \
 156                         switch (n) { \
 157                         case 8: l2 =((unsigned long)(*(--(c))))<<24; \
 158                         case 7: l2|=((unsigned long)(*(--(c))))<<16; \
 159                         case 6: l2|=((unsigned long)(*(--(c))))<< 8; \
 160                         case 5: l2|=((unsigned long)(*(--(c))));     \
 161                         case 4: l1 =((unsigned long)(*(--(c))))<<24; \
 162                         case 3: l1|=((unsigned long)(*(--(c))))<<16; \
 163                         case 2: l1|=((unsigned long)(*(--(c))))<< 8; \
 164                         case 1: l1|=((unsigned long)(*(--(c))));     \
 165                                 } \
 166                         }
 167
 168 #define l2c(l,c)        (*((c)++)=(unsigned char)(((l)    )&0xff), \
 169                          *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
 170                          *((c)++)=(unsigned char)(((l)>>16)&0xff), \
 171                          *((c)++)=(unsigned char)(((l)>>24)&0xff))
 172
 173 #define n2l(c,l)        (l =((unsigned long)(*((c)++)))<<24, \
 174                          l|=((unsigned long)(*((c)++)))<<16, \
 175                          l|=((unsigned long)(*((c)++)))<< 8, \
 176                          l|=((unsigned long)(*((c)++))))
 177
 178 #define l2n(l,c)        (*((c)++)=(unsigned char)(((l)>>24)&0xff), \
 179                          *((c)++)=(unsigned char)(((l)>>16)&0xff), \
 180                          *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
 181                          *((c)++)=(unsigned char)(((l)    )&0xff))
 182
 183 #define l2n6(l,c)       (*((c)++)=(unsigned char)(((l)>>40)&0xff), \
 184                          *((c)++)=(unsigned char)(((l)>>32)&0xff), \
 185                          *((c)++)=(unsigned char)(((l)>>24)&0xff), \
 186                          *((c)++)=(unsigned char)(((l)>>16)&0xff), \
 187                          *((c)++)=(unsigned char)(((l)>> 8)&0xff), \
 188                          *((c)++)=(unsigned char)(((l)    )&0xff))
 189
 190 #define n2l6(c,l)       (l =((BN_ULLONG)(*((c)++)))<<40, \
 191                          l|=((BN_ULLONG)(*((c)++)))<<32, \
 192                          l|=((BN_ULLONG)(*((c)++)))<<24, \
 193                          l|=((BN_ULLONG)(*((c)++)))<<16, \
 194                          l|=((BN_ULLONG)(*((c)++)))<< 8, \
 195                          l|=((BN_ULLONG)(*((c)++))))
 196
 197 /* NOTE - c is not incremented as per l2c */
 198 #define l2cn(l1,l2,c,n) { \
 199                         c+=n; \
 200                         switch (n) { \
 201                         case 8: *(--(c))=(unsigned char)(((l2)>>24)&0xff); \
 202                         case 7: *(--(c))=(unsigned char)(((l2)>>16)&0xff); \
 203                         case 6: *(--(c))=(unsigned char)(((l2)>> 8)&0xff); \
 204                         case 5: *(--(c))=(unsigned char)(((l2)    )&0xff); \
 205                         case 4: *(--(c))=(unsigned char)(((l1)>>24)&0xff); \
 206                         case 3: *(--(c))=(unsigned char)(((l1)>>16)&0xff); \
 207                         case 2: *(--(c))=(unsigned char)(((l1)>> 8)&0xff); \
 208                         case 1: *(--(c))=(unsigned char)(((l1)    )&0xff); \
 209                                 } \
 210                         }
 211
 212 #define n2s(c,s)        ((s=(((unsigned int)(c[0]))<< 8)| \
 213                             (((unsigned int)(c[1]))    )),c+=2)
 214 #define s2n(s,c)        ((c[0]=(unsigned char)(((s)>> 8)&0xff), \
 215                           c[1]=(unsigned char)(((s)    )&0xff)),c+=2)
 216
 217 #define n2l3(c,l)       ((l =(((unsigned long)(c[0]))<<16)| \
 218                              (((unsigned long)(c[1]))<< 8)| \
 219                              (((unsigned long)(c[2]))    )),c+=3)
 220
 221 #define l2n3(l,c)       ((c[0]=(unsigned char)(((l)>>16)&0xff), \
 222                           c[1]=(unsigned char)(((l)>> 8)&0xff), \
 223                           c[2]=(unsigned char)(((l)    )&0xff)),c+=3)
 224
 225 /* LOCAL STUFF */
 226
 227 #define SSL_DECRYPT     0
 228 #define SSL_ENCRYPT     1
 229
 230 #define TWO_BYTE_BIT    0x80
 231 #define SEC_ESC_BIT     0x40
 232 #define TWO_BYTE_MASK   0x7fff
 233 #define THREE_BYTE_MASK 0x3fff
 234
 235 #define INC32(a)        ((a)=((a)+1)&0xffffffffL)
 236 #define DEC32(a)        ((a)=((a)-1)&0xffffffffL)
 237 #define MAX_MAC_SIZE    20 /* up from 16 for SSLv3 */
 238
 239 /*
 240  * Define the Bitmasks for SSL_CIPHER.algorithms.
 241  * This bits are used packed as dense as possible. If new methods/ciphers
 242  * etc will be added, the bits a likely to change, so this information
 243  * is for internal library use only, even though SSL_CIPHER.algorithms
 244  * can be publicly accessed.
 245  * Use the according functions for cipher management instead.
 246  *
 247  * The bit mask handling in the selection and sorting scheme in
 248  * ssl_create_cipher_list() has only limited capabilities, reflecting
 249  * that the different entities within are mutually exclusive:
 250  * ONLY ONE BIT PER MASK CAN BE SET AT A TIME.
 251  */
 252 #define SSL_MKEY_MASK           0x000000FFL
 253 #define SSL_kRSA                0x00000001L /* RSA key exchange */
 254 #define SSL_kDHr                0x00000002L /* DH cert RSA CA cert */
 255 #define SSL_kDHd                0x00000004L /* DH cert DSA CA cert */
 256 #define SSL_kFZA                0x00000008L
 257 #define SSL_kEDH                0x00000010L /* tmp DH key no DH cert */
 258 #define SSL_kKRB5               0x00000020L /* Kerberos5 key exchange */
 259 #define SSL_kECDH               0x00000040L /* ECDH w/ long-term keys */
 260 #define SSL_kECDHE              0x00000080L /* ephemeral ECDH */
 261 #define SSL_EDH                 (SSL_kEDH|(SSL_AUTH_MASK^SSL_aNULL))
 262
 263 #define SSL_AUTH_MASK           0x00007F00L
 264 #define SSL_aRSA                0x00000100L /* Authenticate with RSA */
 265 #define SSL_aDSS                0x00000200L /* Authenticate with DSS */
 266 #define SSL_DSS                 SSL_aDSS
 267 #define SSL_aFZA                0x00000400L
 268 #define SSL_aNULL               0x00000800L /* no Authenticate, ADH */
 269 #define SSL_aDH                 0x00001000L /* no Authenticate, ADH */
 270 #define SSL_aKRB5               0x00002000L /* Authenticate with KRB5 */
 271 #define SSL_aECDSA              0x00004000L /* Authenticate with ECDSA */
 272
 273 #define SSL_NULL                (SSL_eNULL)
 274 #define SSL_ADH                 (SSL_kEDH|SSL_aNULL)
 275 #define SSL_RSA                 (SSL_kRSA|SSL_aRSA)
 276 #define SSL_DH                  (SSL_kDHr|SSL_kDHd|SSL_kEDH)
 277 #define SSL_ECDH                (SSL_kECDH|SSL_kECDHE)
 278 #define SSL_FZA                 (SSL_aFZA|SSL_kFZA|SSL_eFZA)
 279 #define SSL_KRB5                (SSL_kKRB5|SSL_aKRB5)
 280
 281 #define SSL_ENC_MASK            0x0C3F8000L
 282 #define SSL_DES                 0x00008000L
 283 #define SSL_3DES                0x00010000L
 284 #define SSL_RC4                 0x00020000L
 285 #define SSL_RC2                 0x00040000L
 286 #define SSL_IDEA                0x00080000L
 287 #define SSL_eFZA                0x00100000L
 288 #define SSL_eNULL               0x00200000L
 289 #define SSL_AES                 0x04000000L
 290 #define SSL_CAMELLIA            0x08000000L
 291
 292 #define SSL_MAC_MASK            0x00c00000L
 293 #define SSL_MD5                 0x00400000L
 294 #define SSL_SHA1                0x00800000L
 295 #define SSL_SHA                 (SSL_SHA1)
 296
 297 #define SSL_SSL_MASK            0x03000000L
 298 #define SSL_SSLV2               0x01000000L
 299 #define SSL_SSLV3               0x02000000L
 300 #define SSL_TLSV1               SSL_SSLV3       /* for now */
 301
 302 /* we have used 0fffffff - 4 bits left to go. */
 303
 304 /*
 305  * Export and cipher strength information. For each cipher we have to decide
 306  * whether it is exportable or not. This information is likely to change
 307  * over time, since the export control rules are no static technical issue.
 308  *
 309  * Independent of the export flag the cipher strength is sorted into classes.
 310  * SSL_EXP40 was denoting the 40bit US export limit of past times, which now
 311  * is at 56bit (SSL_EXP56). If the exportable cipher class is going to change
 312  * again (eg. to 64bit) the use of "SSL_EXP*" becomes blurred even more,
 313  * since SSL_EXP64 could be similar to SSL_LOW.
 314  * For this reason SSL_MICRO and SSL_MINI macros are included to widen the
 315  * namespace of SSL_LOW-SSL_HIGH to lower values. As development of speed
 316  * and ciphers goes, another extension to SSL_SUPER and/or SSL_ULTRA would
 317  * be possible.
 318  */
 319 #define SSL_EXP_MASK            0x00000003L
 320 #define SSL_NOT_EXP             0x00000001L
 321 #define SSL_EXPORT              0x00000002L
 322
 323 #define SSL_STRONG_MASK         0x000000fcL
 324 #define SSL_STRONG_NONE         0x00000004L
 325 #define SSL_EXP40               0x00000008L
 326 #define SSL_MICRO               (SSL_EXP40)
 327 #define SSL_EXP56               0x00000010L
 328 #define SSL_MINI                (SSL_EXP56)
 329 #define SSL_LOW                 0x00000020L
 330 #define SSL_MEDIUM              0x00000040L
 331 #define SSL_HIGH                0x00000080L
 332
 333 /* we have used 000000ff - 24 bits left to go */
 334
 335 /*
 336  * Macros to check the export status and cipher strength for export ciphers.
 337  * Even though the macros for EXPORT and EXPORT40/56 have similar names,
 338  * their meaning is different:
 339  * *_EXPORT macros check the 'exportable' status.
 340  * *_EXPORT40/56 macros are used to check whether a certain cipher strength
 341  *          is given.
 342  * Since the SSL_IS_EXPORT* and SSL_EXPORT* macros depend on the correct
 343  * algorithm structure element to be passed (algorithms, algo_strength) and no
 344  * typechecking can be done as they are all of type unsigned long, their
 345  * direct usage is discouraged.
 346  * Use the SSL_C_* macros instead.
 347  */
 348 #define SSL_IS_EXPORT(a)        ((a)&SSL_EXPORT)
 349 #define SSL_IS_EXPORT56(a)      ((a)&SSL_EXP56)
 350 #define SSL_IS_EXPORT40(a)      ((a)&SSL_EXP40)
 351 #define SSL_C_IS_EXPORT(c)      SSL_IS_EXPORT((c)->algo_strength)
 352 #define SSL_C_IS_EXPORT56(c)    SSL_IS_EXPORT56((c)->algo_strength)
 353 #define SSL_C_IS_EXPORT40(c)    SSL_IS_EXPORT40((c)->algo_strength)
 354
 355 #define SSL_EXPORT_KEYLENGTH(a,s)       (SSL_IS_EXPORT40(s) ? 5 : \
 356                                  ((a)&SSL_ENC_MASK) == SSL_DES ? 8 : 7)
 357 #define SSL_EXPORT_PKEYLENGTH(a) (SSL_IS_EXPORT40(a) ? 512 : 1024)
 358 #define SSL_C_EXPORT_KEYLENGTH(c)       SSL_EXPORT_KEYLENGTH((c)->algorithms, \
 359                                 (c)->algo_strength)
 360 #define SSL_C_EXPORT_PKEYLENGTH(c)      SSL_EXPORT_PKEYLENGTH((c)->algo_strength)
 361
 362
 363 #define SSL_ALL                 0xffffffffL
 364 #define SSL_ALL_CIPHERS         (SSL_MKEY_MASK|SSL_AUTH_MASK|SSL_ENC_MASK|\
 365                                 SSL_MAC_MASK)
 366 #define SSL_ALL_STRENGTHS       (SSL_EXP_MASK|SSL_STRONG_MASK)
 367
 368 /* Mostly for SSLv3 */
 369 #define SSL_PKEY_RSA_ENC        0
 370 #define SSL_PKEY_RSA_SIGN       1
 371 #define SSL_PKEY_DSA_SIGN       2
 372 #define SSL_PKEY_DH_RSA         3
 373 #define SSL_PKEY_DH_DSA         4
 374 #define SSL_PKEY_ECC            5
 375 #define SSL_PKEY_NUM            6
 376
 377 /* SSL_kRSA <- RSA_ENC | (RSA_TMP & RSA_SIGN) |
 378  *          <- (EXPORT & (RSA_ENC | RSA_TMP) & RSA_SIGN)
 379  * SSL_kDH  <- DH_ENC & (RSA_ENC | RSA_SIGN | DSA_SIGN)
 380  * SSL_kEDH <- RSA_ENC | RSA_SIGN | DSA_SIGN
 381  * SSL_aRSA <- RSA_ENC | RSA_SIGN
 382  * SSL_aDSS <- DSA_SIGN
 383  */
 384
 385 /*
 386 #define CERT_INVALID            0
 387 #define CERT_PUBLIC_KEY         1
 388 #define CERT_PRIVATE_KEY        2
 389 */
 390
 391 #ifndef OPENSSL_NO_EC
 392 /* From ECC-TLS draft, used in encoding the curve type in
 393  * ECParameters
 394  */
 395 #define EXPLICIT_PRIME_CURVE_TYPE  1
 396 #define EXPLICIT_CHAR2_CURVE_TYPE  2
 397 #define NAMED_CURVE_TYPE           3
 398 #endif  /* OPENSSL_NO_EC */
 399
 400 typedef struct cert_pkey_st
 401         {
 402         X509 *x509;
 403         EVP_PKEY *privatekey;
 404         } CERT_PKEY;
 405
 406 typedef struct cert_st
 407         {
 408         /* Current active set */
 409         CERT_PKEY *key; /* ALWAYS points to an element of the pkeys array
 410                          * Probably it would make more sense to store
 411                          * an index, not a pointer. */
 412
 413         /* The following masks are for the key and auth
 414          * algorithms that are supported by the certs below */
 415         int valid;
 416         unsigned long mask;
 417         unsigned long export_mask;
 418 #ifndef OPENSSL_NO_RSA
 419         RSA *rsa_tmp;
 420         RSA *(*rsa_tmp_cb)(SSL *ssl,int is_export,int keysize);
 421 #endif
 422 #ifndef OPENSSL_NO_DH
 423         DH *dh_tmp;
 424         DH *(*dh_tmp_cb)(SSL *ssl,int is_export,int keysize);
 425 #endif
 426 #ifndef OPENSSL_NO_ECDH
 427         EC_KEY *ecdh_tmp;
 428         /* Callback for generating ephemeral ECDH keys */
 429         EC_KEY *(*ecdh_tmp_cb)(SSL *ssl,int is_export,int keysize);
 430 #endif
 431
 432         CERT_PKEY pkeys[SSL_PKEY_NUM];
 433
 434         int references; /* >1 only if SSL_copy_session_id is used */
 435         } CERT;
 436
 437
 438 typedef struct sess_cert_st
 439         {
 440         STACK_OF(X509) *cert_chain; /* as received from peer (not for SSL2) */
 441
 442         /* The 'peer_...' members are used only by clients. */
 443         int peer_cert_type;
 444
 445         CERT_PKEY *peer_key; /* points to an element of peer_pkeys (never NULL!) */
 446         CERT_PKEY peer_pkeys[SSL_PKEY_NUM];
 447         /* Obviously we don't have the private keys of these,
 448          * so maybe we shouldn't even use the CERT_PKEY type here. */
 449
 450 #ifndef OPENSSL_NO_RSA
 451         RSA *peer_rsa_tmp; /* not used for SSL 2 */
 452 #endif
 453 #ifndef OPENSSL_NO_DH
 454         DH *peer_dh_tmp; /* not used for SSL 2 */
 455 #endif
 456 #ifndef OPENSSL_NO_ECDH
 457         EC_KEY *peer_ecdh_tmp;
 458 #endif
 459
 460         int references; /* actually always 1 at the moment */
 461         } SESS_CERT;
 462
 463
 464 /*#define MAC_DEBUG     */
 465
 466 /*#define ERR_DEBUG     */
 467 /*#define ABORT_DEBUG   */
 468 /*#define PKT_DEBUG 1   */
 469 /*#define DES_DEBUG     */
 470 /*#define DES_OFB_DEBUG */
 471 /*#define SSL_DEBUG     */
 472 /*#define RSA_DEBUG     */
 473 /*#define IDEA_DEBUG    */
 474
 475 #define FP_ICC  (int (*)(const void *,const void *))
 476 #define ssl_put_cipher_by_char(ssl,ciph,ptr) \
 477                 ((ssl)->method->put_cipher_by_char((ciph),(ptr)))
 478 #define ssl_get_cipher_by_char(ssl,ptr) \
 479                 ((ssl)->method->get_cipher_by_char(ptr))
 480
 481 /* This is for the SSLv3/TLSv1.0 differences in crypto/hash stuff
 482  * It is a bit of a mess of functions, but hell, think of it as
 483  * an opaque structure :-) */
 484 typedef struct ssl3_enc_method
 485         {
 486         int (*enc)(SSL *, int);
 487         int (*mac)(SSL *, unsigned char *, int);
 488         int (*setup_key_block)(SSL *);
 489         int (*generate_master_secret)(SSL *, unsigned char *, unsigned char *, int);
 490         int (*change_cipher_state)(SSL *, int);
 491         int (*final_finish_mac)(SSL *, EVP_MD_CTX *, EVP_MD_CTX *, const char *, int, unsigned char *);
 492         int finish_mac_length;
 493         int (*cert_verify_mac)(SSL *, EVP_MD_CTX *, unsigned char *);
 494         const char *client_finished_label;
 495         int client_finished_label_len;
 496         const char *server_finished_label;
 497         int server_finished_label_len;
 498         int (*alert_value)(int);
 499         } SSL3_ENC_METHOD;
 500
 501 /* Used for holding the relevant compression methods loaded into SSL_CTX */
 502 typedef struct ssl3_comp_st
 503         {
 504         int comp_id;    /* The identifier byte for this compression type */
 505         char *name;     /* Text name used for the compression type */
 506         COMP_METHOD *method; /* The method :-) */
 507         } SSL3_COMP;
 508
 509 extern SSL3_ENC_METHOD ssl3_undef_enc_method;
 510 OPENSSL_EXTERN SSL_CIPHER ssl2_ciphers[];
 511 OPENSSL_EXTERN SSL_CIPHER ssl3_ciphers[];
 512
 513
 514 SSL_METHOD *ssl_bad_method(int ver);
 515 SSL_METHOD *sslv2_base_method(void);
 516 SSL_METHOD *sslv23_base_method(void);
 517 SSL_METHOD *sslv3_base_method(void);
 518
 519 extern SSL3_ENC_METHOD TLSv1_enc_data;
 520 extern SSL3_ENC_METHOD SSLv3_enc_data;
 521 extern SSL3_ENC_METHOD DTLSv1_enc_data;
 522
 523 #define IMPLEMENT_tls1_meth_func(func_name, s_accept, s_connect, s_get_meth) \
 524 SSL_METHOD *func_name(void)  \
 525         { \
 526         static SSL_METHOD func_name##_data= { \
 527                 TLS1_VERSION, \
 528                 tls1_new, \
 529                 tls1_clear, \
 530                 tls1_free, \
 531                 s_accept, \
 532                 s_connect, \
 533                 ssl3_read, \
 534                 ssl3_peek, \
 535                 ssl3_write, \
 536                 ssl3_shutdown, \
 537                 ssl3_renegotiate, \
 538                 ssl3_renegotiate_check, \
 539                 ssl3_get_message, \
 540                 ssl3_read_bytes, \
 541                 ssl3_write_bytes, \
 542                 ssl3_dispatch_alert, \
 543                 ssl3_ctrl, \
 544                 ssl3_ctx_ctrl, \
 545                 ssl3_get_cipher_by_char, \
 546                 ssl3_put_cipher_by_char, \
 547                 ssl3_pending, \
 548                 ssl3_num_ciphers, \
 549                 ssl3_get_cipher, \
 550                 s_get_meth, \
 551                 tls1_default_timeout, \
 552                 &TLSv1_enc_data, \
 553                 ssl_undefined_void_function, \
 554                 ssl3_callback_ctrl, \
 555                 ssl3_ctx_callback_ctrl, \
 556         }; \
 557         return &func_name##_data; \
 558         }
 559
 560 #define IMPLEMENT_ssl3_meth_func(func_name, s_accept, s_connect, s_get_meth) \
 561 SSL_METHOD *func_name(void)  \
 562         { \
 563         static SSL_METHOD func_name##_data= { \
 564                 SSL3_VERSION, \
 565                 ssl3_new, \
 566                 ssl3_clear, \
 567                 ssl3_free, \
 568                 s_accept, \
 569                 s_connect, \
 570                 ssl3_read, \
 571                 ssl3_peek, \
 572                 ssl3_write, \
 573                 ssl3_shutdown, \
 574                 ssl3_renegotiate, \
 575                 ssl3_renegotiate_check, \
 576                 ssl3_get_message, \
 577                 ssl3_read_bytes, \
 578                 ssl3_write_bytes, \
 579                 ssl3_dispatch_alert, \
 580                 ssl3_ctrl, \
 581                 ssl3_ctx_ctrl, \
 582                 ssl3_get_cipher_by_char, \
 583                 ssl3_put_cipher_by_char, \
 584                 ssl3_pending, \
 585                 ssl3_num_ciphers, \
 586                 ssl3_get_cipher, \
 587                 s_get_meth, \
 588                 ssl3_default_timeout, \
 589                 &SSLv3_enc_data, \
 590                 ssl_undefined_void_function, \
 591                 ssl3_callback_ctrl, \
 592                 ssl3_ctx_callback_ctrl, \
 593         }; \
 594         return &func_name##_data; \
 595         }
 596
 597 #define IMPLEMENT_ssl23_meth_func(func_name, s_accept, s_connect, s_get_meth) \
 598 SSL_METHOD *func_name(void)  \
 599         { \
 600         static SSL_METHOD func_name##_data= { \
 601         TLS1_VERSION, \
 602         tls1_new, \
 603         tls1_clear, \
 604         tls1_free, \
 605         s_accept, \
 606         s_connect, \
 607         ssl23_read, \
 608         ssl23_peek, \
 609         ssl23_write, \
 610         ssl_undefined_function, \
 611         ssl_undefined_function, \
 612         ssl_ok, \
 613         ssl3_get_message, \
 614         ssl3_read_bytes, \
 615         ssl3_write_bytes, \
 616         ssl3_dispatch_alert, \
 617         ssl3_ctrl, \
 618         ssl3_ctx_ctrl, \
 619         ssl23_get_cipher_by_char, \
 620         ssl23_put_cipher_by_char, \
 621         ssl_undefined_const_function, \
 622         ssl23_num_ciphers, \
 623         ssl23_get_cipher, \
 624         s_get_meth, \
 625         ssl23_default_timeout, \
 626         &ssl3_undef_enc_method, \
 627         ssl_undefined_void_function, \
 628         ssl3_callback_ctrl, \
 629         ssl3_ctx_callback_ctrl, \
 630         }; \
 631         return &func_name##_data; \
 632         }
 633
 634 #define IMPLEMENT_ssl2_meth_func(func_name, s_accept, s_connect, s_get_meth) \
 635 SSL_METHOD *func_name(void)  \
 636         { \
 637         static SSL_METHOD func_name##_data= { \
 638                 SSL2_VERSION, \
 639                 ssl2_new,       /* local */ \
 640                 ssl2_clear,     /* local */ \
 641                 ssl2_free,      /* local */ \
 642                 s_accept, \
 643                 s_connect, \
 644                 ssl2_read, \
 645                 ssl2_peek, \
 646                 ssl2_write, \
 647                 ssl2_shutdown, \
 648                 ssl_ok, /* NULL - renegotiate */ \
 649                 ssl_ok, /* NULL - check renegotiate */ \
 650                 NULL, /* NULL - ssl_get_message */ \
 651                 NULL, /* NULL - ssl_get_record */ \
 652                 NULL, /* NULL - ssl_write_bytes */ \
 653                 NULL, /* NULL - dispatch_alert */ \
 654                 ssl2_ctrl,      /* local */ \
 655                 ssl2_ctx_ctrl,  /* local */ \
 656                 ssl2_get_cipher_by_char, \
 657                 ssl2_put_cipher_by_char, \
 658                 ssl2_pending, \
 659                 ssl2_num_ciphers, \
 660                 ssl2_get_cipher, \
 661                 s_get_meth, \
 662                 ssl2_default_timeout, \
 663                 &ssl3_undef_enc_method, \
 664                 ssl_undefined_void_function, \
 665                 ssl2_callback_ctrl,     /* local */ \
 666                 ssl2_ctx_callback_ctrl, /* local */ \
 667         }; \
 668         return &func_name##_data; \
 669         }
 670
 671 #define IMPLEMENT_dtls1_meth_func(func_name, s_accept, s_connect, s_get_meth) \
 672 SSL_METHOD *func_name(void)  \
 673         { \
 674         static SSL_METHOD func_name##_data= { \
 675                 DTLS1_VERSION, \
 676                 dtls1_new, \
 677                 dtls1_clear, \
 678                 dtls1_free, \
 679                 s_accept, \
 680                 s_connect, \
 681                 ssl3_read, \
 682                 ssl3_peek, \
 683                 ssl3_write, \
 684                 ssl3_shutdown, \
 685                 ssl3_renegotiate, \
 686                 ssl3_renegotiate_check, \
 687                 dtls1_get_message, \
 688                 dtls1_read_bytes, \
 689                 dtls1_write_app_data_bytes, \
 690                 dtls1_dispatch_alert, \
 691                 ssl3_ctrl, \
 692                 ssl3_ctx_ctrl, \
 693                 ssl3_get_cipher_by_char, \
 694                 ssl3_put_cipher_by_char, \
 695                 ssl3_pending, \
 696                 ssl3_num_ciphers, \
 697                 ssl3_get_cipher, \
 698                 s_get_meth, \
 699                 dtls1_default_timeout, \
 700                 &DTLSv1_enc_data, \
 701                 ssl_undefined_void_function, \
 702                 ssl3_callback_ctrl, \
 703                 ssl3_ctx_callback_ctrl, \
 704         }; \
 705         return &func_name##_data; \
 706         }
 707
 708 void ssl_clear_cipher_ctx(SSL *s);
 709 int ssl_clear_bad_session(SSL *s);
 710 CERT *ssl_cert_new(void);
 711 CERT *ssl_cert_dup(CERT *cert);
 712 int ssl_cert_inst(CERT **o);
 713 void ssl_cert_free(CERT *c);
 714 SESS_CERT *ssl_sess_cert_new(void);
 715 void ssl_sess_cert_free(SESS_CERT *sc);
 716 int ssl_set_peer_cert_type(SESS_CERT *c, int type);
 717 int ssl_get_new_session(SSL *s, int session);
 718 int ssl_get_prev_session(SSL *s, unsigned char *session,int len);
 719 int ssl_cipher_id_cmp(const SSL_CIPHER *a,const SSL_CIPHER *b);
 720 int ssl_cipher_ptr_id_cmp(const SSL_CIPHER * const *ap,
 721                         const SSL_CIPHER * const *bp);
 722 STACK_OF(SSL_CIPHER) *ssl_bytes_to_cipher_list(SSL *s,unsigned char *p,int num,
 723                                                STACK_OF(SSL_CIPHER) **skp);
 724 int ssl_cipher_list_to_bytes(SSL *s,STACK_OF(SSL_CIPHER) *sk,unsigned char *p,
 725                              int (*put_cb)(const SSL_CIPHER *, unsigned char *));
 726 STACK_OF(SSL_CIPHER) *ssl_create_cipher_list(const SSL_METHOD *meth,
 727                                              STACK_OF(SSL_CIPHER) **pref,
 728                                              STACK_OF(SSL_CIPHER) **sorted,
 729                                              const char *rule_str);
 730 void ssl_update_cache(SSL *s, int mode);
 731 int ssl_cipher_get_evp(const SSL_SESSION *s,const EVP_CIPHER **enc,
 732                        const EVP_MD **md,SSL_COMP **comp);
 733 int ssl_verify_cert_chain(SSL *s,STACK_OF(X509) *sk);
 734 int ssl_undefined_function(SSL *s);
 735 int ssl_undefined_void_function(void);
 736 int ssl_undefined_const_function(const SSL *s);
 737 X509 *ssl_get_server_send_cert(SSL *);
 738 EVP_PKEY *ssl_get_sign_pkey(SSL *,SSL_CIPHER *);
 739 int ssl_cert_type(X509 *x,EVP_PKEY *pkey);
 740 void ssl_set_cert_masks(CERT *c, SSL_CIPHER *cipher);
 741 STACK_OF(SSL_CIPHER) *ssl_get_ciphers_by_id(SSL *s);
 742 int ssl_verify_alarm_type(long type);
 743 void ssl_load_ciphers(void);
 744
 745 int ssl2_enc_init(SSL *s, int client);
 746 int ssl2_generate_key_material(SSL *s);
 747 void ssl2_enc(SSL *s,int send_data);
 748 void ssl2_mac(SSL *s,unsigned char *mac,int send_data);
 749 SSL_CIPHER *ssl2_get_cipher_by_char(const unsigned char *p);
 750 int ssl2_put_cipher_by_char(const SSL_CIPHER *c,unsigned char *p);
 751 int ssl2_part_read(SSL *s, unsigned long f, int i);
 752 int ssl2_do_write(SSL *s);
 753 int ssl2_set_certificate(SSL *s, int type, int len, const unsigned char *data);
 754 void ssl2_return_error(SSL *s,int reason);
 755 void ssl2_write_error(SSL *s);
 756 int ssl2_num_ciphers(void);
 757 SSL_CIPHER *ssl2_get_cipher(unsigned int u);
 758 int     ssl2_new(SSL *s);
 759 void    ssl2_free(SSL *s);
 760 int     ssl2_accept(SSL *s);
 761 int     ssl2_connect(SSL *s);
 762 int     ssl2_read(SSL *s, void *buf, int len);
 763 int     ssl2_peek(SSL *s, void *buf, int len);
 764 int     ssl2_write(SSL *s, const void *buf, int len);
 765 int     ssl2_shutdown(SSL *s);
 766 void    ssl2_clear(SSL *s);
 767 long    ssl2_ctrl(SSL *s,int cmd, long larg, void *parg);
 768 long    ssl2_ctx_ctrl(SSL_CTX *s,int cmd, long larg, void *parg);
 769 long    ssl2_callback_ctrl(SSL *s,int cmd, void (*fp)(void));
 770 long    ssl2_ctx_callback_ctrl(SSL_CTX *s,int cmd, void (*fp)(void));
 771 int     ssl2_pending(const SSL *s);
 772 long    ssl2_default_timeout(void );
 773
 774 SSL_CIPHER *ssl3_get_cipher_by_char(const unsigned char *p);
 775 int ssl3_put_cipher_by_char(const SSL_CIPHER *c,unsigned char *p);
 776 void ssl3_init_finished_mac(SSL *s);
 777 int ssl3_send_server_certificate(SSL *s);
 778 int ssl3_get_finished(SSL *s,int state_a,int state_b);
 779 int ssl3_setup_key_block(SSL *s);
 780 int ssl3_send_change_cipher_spec(SSL *s,int state_a,int state_b);
 781 int ssl3_change_cipher_state(SSL *s,int which);
 782 void ssl3_cleanup_key_block(SSL *s);
 783 int ssl3_do_write(SSL *s,int type);
 784 void ssl3_send_alert(SSL *s,int level, int desc);
 785 int ssl3_generate_master_secret(SSL *s, unsigned char *out,
 786         unsigned char *p, int len);
 787 int ssl3_get_req_cert_type(SSL *s,unsigned char *p);
 788 long ssl3_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
 789 int ssl3_send_finished(SSL *s, int a, int b, const char *sender,int slen);
 790 int ssl3_num_ciphers(void);
 791 SSL_CIPHER *ssl3_get_cipher(unsigned int u);
 792 int ssl3_renegotiate(SSL *ssl);
 793 int ssl3_renegotiate_check(SSL *ssl);
 794 int ssl3_dispatch_alert(SSL *s);
 795 int ssl3_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
 796 int ssl3_write_bytes(SSL *s, int type, const void *buf, int len);
 797 int ssl3_final_finish_mac(SSL *s, EVP_MD_CTX *ctx1, EVP_MD_CTX *ctx2,
 798         const char *sender, int slen,unsigned char *p);
 799 int ssl3_cert_verify_mac(SSL *s, EVP_MD_CTX *in, unsigned char *p);
 800 void ssl3_finish_mac(SSL *s, const unsigned char *buf, int len);
 801 int ssl3_enc(SSL *s, int send_data);
 802 int ssl3_mac(SSL *ssl, unsigned char *md, int send_data);
 803 unsigned long ssl3_output_cert_chain(SSL *s, X509 *x);
 804 SSL_CIPHER *ssl3_choose_cipher(SSL *ssl,STACK_OF(SSL_CIPHER) *clnt,
 805                                STACK_OF(SSL_CIPHER) *srvr);
 806 int     ssl3_setup_buffers(SSL *s);
 807 int     ssl3_new(SSL *s);
 808 void    ssl3_free(SSL *s);
 809 int     ssl3_accept(SSL *s);
 810 int     ssl3_connect(SSL *s);
 811 int     ssl3_read(SSL *s, void *buf, int len);
 812 int     ssl3_peek(SSL *s, void *buf, int len);
 813 int     ssl3_write(SSL *s, const void *buf, int len);
 814 int     ssl3_shutdown(SSL *s);
 815 void    ssl3_clear(SSL *s);
 816 long    ssl3_ctrl(SSL *s,int cmd, long larg, void *parg);
 817 long    ssl3_ctx_ctrl(SSL_CTX *s,int cmd, long larg, void *parg);
 818 long    ssl3_callback_ctrl(SSL *s,int cmd, void (*fp)(void));
 819 long    ssl3_ctx_callback_ctrl(SSL_CTX *s,int cmd, void (*fp)(void));
 820 int     ssl3_pending(const SSL *s);
 821
 822 void ssl3_record_sequence_update(unsigned char *seq);
 823 int ssl3_do_change_cipher_spec(SSL *ssl);
 824 long ssl3_default_timeout(void );
 825
 826 int ssl23_num_ciphers(void );
 827 SSL_CIPHER *ssl23_get_cipher(unsigned int u);
 828 int ssl23_read(SSL *s, void *buf, int len);
 829 int ssl23_peek(SSL *s, void *buf, int len);
 830 int ssl23_write(SSL *s, const void *buf, int len);
 831 int ssl23_put_cipher_by_char(const SSL_CIPHER *c, unsigned char *p);
 832 SSL_CIPHER *ssl23_get_cipher_by_char(const unsigned char *p);
 833 long ssl23_default_timeout(void );
 834
 835 long tls1_default_timeout(void);
 836 int dtls1_do_write(SSL *s,int type);
 837 int ssl3_read_n(SSL *s, int n, int max, int extend);
 838 int dtls1_read_bytes(SSL *s, int type, unsigned char *buf, int len, int peek);
 839 int ssl3_do_compress(SSL *ssl);
 840 int ssl3_do_uncompress(SSL *ssl);
 841 int ssl3_write_pending(SSL *s, int type, const unsigned char *buf,
 842         unsigned int len);
 843 unsigned char *dtls1_set_message_header(SSL *s,
 844         unsigned char *p, unsigned char mt,     unsigned long len,
 845         unsigned long frag_off, unsigned long frag_len);
 846
 847 int dtls1_write_app_data_bytes(SSL *s, int type, const void *buf, int len);
 848 int dtls1_write_bytes(SSL *s, int type, const void *buf, int len);
 849
 850 int dtls1_send_change_cipher_spec(SSL *s, int a, int b);
 851 int dtls1_send_finished(SSL *s, int a, int b, const char *sender, int slen);
 852 unsigned long dtls1_output_cert_chain(SSL *s, X509 *x);
 853 int dtls1_read_failed(SSL *s, int code);
 854 int dtls1_buffer_message(SSL *s, int ccs);
 855 int dtls1_retransmit_message(SSL *s, unsigned short seq,
 856         unsigned long frag_off, int *found);
 857 void dtls1_clear_record_buffer(SSL *s);
 858 void dtls1_get_message_header(unsigned char *data, struct hm_header_st *msg_hdr);
 859 void dtls1_get_ccs_header(unsigned char *data, struct ccs_header_st *ccs_hdr);
 860 void dtls1_reset_seq_numbers(SSL *s, int rw);
 861 long dtls1_default_timeout(void);
 862
 863
 864 /* some client-only functions */
 865 int ssl3_client_hello(SSL *s);
 866 int ssl3_get_server_hello(SSL *s);
 867 int ssl3_get_certificate_request(SSL *s);
 868 int ssl3_get_server_done(SSL *s);
 869 int ssl3_send_client_verify(SSL *s);
 870 int ssl3_send_client_certificate(SSL *s);
 871 int ssl3_send_client_key_exchange(SSL *s);
 872 int ssl3_get_key_exchange(SSL *s);
 873 int ssl3_get_server_certificate(SSL *s);
 874 int ssl3_check_cert_and_algorithm(SSL *s);
 875
 876 int dtls1_client_hello(SSL *s);
 877 int dtls1_send_client_certificate(SSL *s);
 878 int dtls1_send_client_key_exchange(SSL *s);
 879 int dtls1_send_client_verify(SSL *s);
 880
 881 /* some server-only functions */
 882 int ssl3_get_client_hello(SSL *s);
 883 int ssl3_send_server_hello(SSL *s);
 884 int ssl3_send_hello_request(SSL *s);
 885 int ssl3_send_server_key_exchange(SSL *s);
 886 int ssl3_send_certificate_request(SSL *s);
 887 int ssl3_send_server_done(SSL *s);
 888 int ssl3_check_client_hello(SSL *s);
 889 int ssl3_get_client_certificate(SSL *s);
 890 int ssl3_get_client_key_exchange(SSL *s);
 891 int ssl3_get_cert_verify(SSL *s);
 892
 893 int dtls1_send_hello_request(SSL *s);
 894 int dtls1_send_server_hello(SSL *s);
 895 int dtls1_send_server_certificate(SSL *s);
 896 int dtls1_send_server_key_exchange(SSL *s);
 897 int dtls1_send_certificate_request(SSL *s);
 898 int dtls1_send_server_done(SSL *s);
 899
 900
 901
 902 int ssl23_accept(SSL *s);
 903 int ssl23_connect(SSL *s);
 904 int ssl23_read_bytes(SSL *s, int n);
 905 int ssl23_write_bytes(SSL *s);
 906
 907 int tls1_new(SSL *s);
 908 void tls1_free(SSL *s);
 909 void tls1_clear(SSL *s);
 910 long tls1_ctrl(SSL *s,int cmd, long larg, void *parg);
 911 long tls1_callback_ctrl(SSL *s,int cmd, void (*fp)(void));
 912 SSL_METHOD *tlsv1_base_method(void );
 913
 914 int dtls1_new(SSL *s);
 915 int     dtls1_accept(SSL *s);
 916 int     dtls1_connect(SSL *s);
 917 void dtls1_free(SSL *s);
 918 void dtls1_clear(SSL *s);
 919 long dtls1_ctrl(SSL *s,int cmd, long larg, void *parg);
 920 SSL_METHOD *dtlsv1_base_method(void );
 921
 922 long dtls1_get_message(SSL *s, int st1, int stn, int mt, long max, int *ok);
 923 int dtls1_get_record(SSL *s);
 924 int do_dtls1_write(SSL *s, int type, const unsigned char *buf,
 925         unsigned int len, int create_empty_fragement);
 926 int dtls1_dispatch_alert(SSL *s);
 927 int dtls1_enc(SSL *s, int snd);
 928
 929 int ssl_init_wbio_buffer(SSL *s, int push);
 930 void ssl_free_wbio_buffer(SSL *s);
 931
 932 int tls1_change_cipher_state(SSL *s, int which);
 933 int tls1_setup_key_block(SSL *s);
 934 int tls1_enc(SSL *s, int snd);
 935 int tls1_final_finish_mac(SSL *s, EVP_MD_CTX *in1_ctx, EVP_MD_CTX *in2_ctx,
 936         const char *str, int slen, unsigned char *p);
 937 int tls1_cert_verify_mac(SSL *s, EVP_MD_CTX *in, unsigned char *p);
 938 int tls1_mac(SSL *ssl, unsigned char *md, int snd);
 939 int tls1_generate_master_secret(SSL *s, unsigned char *out,
 940         unsigned char *p, int len);
 941 int tls1_alert_code(int code);
 942 int ssl3_alert_code(int code);
 943 int ssl_ok(SSL *s);
 944
 945 int check_srvr_ecc_cert_and_alg(X509 *x, SSL_CIPHER *cs);
 946
 947 SSL_COMP *ssl3_comp_find(STACK_OF(SSL_COMP) *sk, int n);
 948
 949
 950 #endif