path: root/include/openssl/ssl3.h

/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
 * All rights reserved.
 *
 * This package is an SSL implementation written
 * by Eric Young (eay@cryptsoft.com).
 * The implementation was written so as to conform with Netscapes SSL.
 *
 * This library is free for commercial and non-commercial use as long as
 * the following conditions are aheared to.  The following conditions
 * apply to all code found in this distribution, be it the RC4, RSA,
 * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
 * included with this distribution is covered by the same copyright terms
 * except that the holder is Tim Hudson (tjh@cryptsoft.com).
 *
 * Copyright remains Eric Young's, and as such any Copyright notices in
 * the code are not to be removed.
 * If this package is used in a product, Eric Young should be given attribution
 * as the author of the parts of the library used.
 * This can be in the form of a textual message at program startup or
 * in documentation (online or textual) provided with the package.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *    "This product includes cryptographic software written by
 *     Eric Young (eay@cryptsoft.com)"
 *    The word 'cryptographic' can be left out if the rouines from the library
 *    being used are not cryptographic related :-).
 * 4. If you include any Windows specific code (or a derivative thereof) from
 *    the apps directory (application code) you must include an acknowledgement:
 *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
 *
 * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 *
 * The licence and distribution terms for any publically available version or
 * derivative of this code cannot be changed.  i.e. this code cannot simply be
 * copied and put under another distribution licence
 * [including the GNU Public Licence.]
 */
/* ====================================================================
 * Copyright (c) 1998-2002 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    openssl-core@openssl.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 *
 * This product includes cryptographic software written by Eric Young
 * (eay@cryptsoft.com).  This product includes software written by Tim
 * Hudson (tjh@cryptsoft.com).
 *
 */
/* ====================================================================
 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
 * ECC cipher suite support in OpenSSL originally developed by
 * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
 */

#ifndef HEADER_SSL3_H
# define HEADER_SSL3_H

# ifndef OPENSSL_NO_COMP
#  include <openssl/comp.h>
# endif
# include <openssl/buffer.h>
# include <openssl/evp.h>
# include <openssl/ssl.h>

#ifdef  __cplusplus
extern "C" {
#endif

/*
 * Signalling cipher suite value from RFC 5746
 * (TLS_EMPTY_RENEGOTIATION_INFO_SCSV)
 */
# define SSL3_CK_SCSV                            0x030000FF

/*
 * Signalling cipher suite value from draft-ietf-tls-downgrade-scsv-00
 * (TLS_FALLBACK_SCSV)
 */
# define SSL3_CK_FALLBACK_SCSV                   0x03005600

# define SSL3_CK_RSA_NULL_MD5                    0x03000001
# define SSL3_CK_RSA_NULL_SHA                    0x03000002
# define SSL3_CK_RSA_RC4_40_MD5                  0x03000003
# define SSL3_CK_RSA_RC4_128_MD5                 0x03000004
# define SSL3_CK_RSA_RC4_128_SHA                 0x03000005
# define SSL3_CK_RSA_RC2_40_MD5                  0x03000006
# define SSL3_CK_RSA_IDEA_128_SHA                0x03000007
# define SSL3_CK_RSA_DES_40_CBC_SHA              0x03000008
# define SSL3_CK_RSA_DES_64_CBC_SHA              0x03000009
# define SSL3_CK_RSA_DES_192_CBC3_SHA            0x0300000A

# define SSL3_CK_DH_DSS_DES_40_CBC_SHA           0x0300000B
# define SSL3_CK_DH_DSS_DES_64_CBC_SHA           0x0300000C
# define SSL3_CK_DH_DSS_DES_192_CBC3_SHA         0x0300000D
# define SSL3_CK_DH_RSA_DES_40_CBC_SHA           0x0300000E
# define SSL3_CK_DH_RSA_DES_64_CBC_SHA           0x0300000F
# define SSL3_CK_DH_RSA_DES_192_CBC3_SHA         0x03000010

# define SSL3_CK_DHE_DSS_DES_40_CBC_SHA          0x03000011
# define SSL3_CK_EDH_DSS_DES_40_CBC_SHA          SSL3_CK_DHE_DSS_DES_40_CBC_SHA
# define SSL3_CK_DHE_DSS_DES_64_CBC_SHA          0x03000012
# define SSL3_CK_EDH_DSS_DES_64_CBC_SHA          SSL3_CK_DHE_DSS_DES_64_CBC_SHA
# define SSL3_CK_DHE_DSS_DES_192_CBC3_SHA        0x03000013
# define SSL3_CK_EDH_DSS_DES_192_CBC3_SHA        SSL3_CK_DHE_DSS_DES_192_CBC3_SHA
# define SSL3_CK_DHE_RSA_DES_40_CBC_SHA          0x03000014
# define SSL3_CK_EDH_RSA_DES_40_CBC_SHA          SSL3_CK_DHE_RSA_DES_40_CBC_SHA
# define SSL3_CK_DHE_RSA_DES_64_CBC_SHA          0x03000015
# define SSL3_CK_EDH_RSA_DES_64_CBC_SHA          SSL3_CK_DHE_RSA_DES_64_CBC_SHA
# define SSL3_CK_DHE_RSA_DES_192_CBC3_SHA        0x03000016
# define SSL3_CK_EDH_RSA_DES_192_CBC3_SHA        SSL3_CK_DHE_RSA_DES_192_CBC3_SHA

# define SSL3_CK_ADH_RC4_40_MD5                  0x03000017
# define SSL3_CK_ADH_RC4_128_MD5                 0x03000018
# define SSL3_CK_ADH_DES_40_CBC_SHA              0x03000019
# define SSL3_CK_ADH_DES_64_CBC_SHA              0x0300001A
# define SSL3_CK_ADH_DES_192_CBC_SHA             0x0300001B

# define SSL3_TXT_RSA_NULL_MD5                   "NULL-MD5"
# define SSL3_TXT_RSA_NULL_SHA                   "NULL-SHA"
# define SSL3_TXT_RSA_RC4_40_MD5                 "EXP-RC4-MD5"
# define SSL3_TXT_RSA_RC4_128_MD5                "RC4-MD5"
# define SSL3_TXT_RSA_RC4_128_SHA                "RC4-SHA"
# define SSL3_TXT_RSA_RC2_40_MD5                 "EXP-RC2-CBC-MD5"
# define SSL3_TXT_RSA_IDEA_128_SHA               "IDEA-CBC-SHA"
# define SSL3_TXT_RSA_DES_40_CBC_SHA             "EXP-DES-CBC-SHA"
# define SSL3_TXT_RSA_DES_64_CBC_SHA             "DES-CBC-SHA"
# define SSL3_TXT_RSA_DES_192_CBC3_SHA           "DES-CBC3-SHA"

# define SSL3_TXT_DH_DSS_DES_40_CBC_SHA          "EXP-DH-DSS-DES-CBC-SHA"
# define SSL3_TXT_DH_DSS_DES_64_CBC_SHA          "DH-DSS-DES-CBC-SHA"
# define SSL3_TXT_DH_DSS_DES_192_CBC3_SHA        "DH-DSS-DES-CBC3-SHA"
# define SSL3_TXT_DH_RSA_DES_40_CBC_SHA          "EXP-DH-RSA-DES-CBC-SHA"
# define SSL3_TXT_DH_RSA_DES_64_CBC_SHA          "DH-RSA-DES-CBC-SHA"
# define SSL3_TXT_DH_RSA_DES_192_CBC3_SHA        "DH-RSA-DES-CBC3-SHA"

# define SSL3_TXT_DHE_DSS_DES_40_CBC_SHA         "EXP-DHE-DSS-DES-CBC-SHA"
# define SSL3_TXT_DHE_DSS_DES_64_CBC_SHA         "DHE-DSS-DES-CBC-SHA"
# define SSL3_TXT_DHE_DSS_DES_192_CBC3_SHA       "DHE-DSS-DES-CBC3-SHA"
# define SSL3_TXT_DHE_RSA_DES_40_CBC_SHA         "EXP-DHE-RSA-DES-CBC-SHA"
# define SSL3_TXT_DHE_RSA_DES_64_CBC_SHA         "DHE-RSA-DES-CBC-SHA"
# define SSL3_TXT_DHE_RSA_DES_192_CBC3_SHA       "DHE-RSA-DES-CBC3-SHA"

/*
 * This next block of six "EDH" labels is for backward compatibility with
 * older versions of OpenSSL.  New code should use the six "DHE" labels above
 * instead:
 */
# define SSL3_TXT_EDH_DSS_DES_40_CBC_SHA         "EXP-EDH-DSS-DES-CBC-SHA"
# define SSL3_TXT_EDH_DSS_DES_64_CBC_SHA         "EDH-DSS-DES-CBC-SHA"
# define SSL3_TXT_EDH_DSS_DES_192_CBC3_SHA       "EDH-DSS-DES-CBC3-SHA"
# define SSL3_TXT_EDH_RSA_DES_40_CBC_SHA         "EXP-EDH-RSA-DES-CBC-SHA"
# define SSL3_TXT_EDH_RSA_DES_64_CBC_SHA         "EDH-RSA-DES-CBC-SHA"
# define SSL3_TXT_EDH_RSA_DES_192_CBC3_SHA       "EDH-RSA-DES-CBC3-SHA"

# define SSL3_TXT_ADH_RC4_40_MD5                 "EXP-ADH-RC4-MD5"
# define SSL3_TXT_ADH_RC4_128_MD5                "ADH-RC4-MD5"
# define SSL3_TXT_ADH_DES_40_CBC_SHA             "EXP-ADH-DES-CBC-SHA"
# define SSL3_TXT_ADH_DES_64_CBC_SHA             "ADH-DES-CBC-SHA"
# define SSL3_TXT_ADH_DES_192_CBC_SHA            "ADH-DES-CBC3-SHA"

# define SSL3_SSL_SESSION_ID_LENGTH              32
# define SSL3_MAX_SSL_SESSION_ID_LENGTH          32

# define SSL3_MASTER_SECRET_SIZE                 48
# define SSL3_RANDOM_SIZE                        32
# define SSL3_SESSION_ID_SIZE                    32
# define SSL3_RT_HEADER_LENGTH                   5

# define SSL3_HM_HEADER_LENGTH                  4

# ifndef SSL3_ALIGN_PAYLOAD
 /*
  * Some will argue that this increases memory footprint, but it's not
  * actually true. Point is that malloc has to return at least 64-bit aligned
  * pointers, meaning that allocating 5 bytes wastes 3 bytes in either case.
  * Suggested pre-gaping simply moves these wasted bytes from the end of
  * allocated region to its front, but makes data payload aligned, which
  * improves performance:-)
  */
#  define SSL3_ALIGN_PAYLOAD                     8
# else
#  if (SSL3_ALIGN_PAYLOAD&(SSL3_ALIGN_PAYLOAD-1))!=0
#   error "insane SSL3_ALIGN_PAYLOAD"
#   undef SSL3_ALIGN_PAYLOAD
#  endif
# endif

/*
 * This is the maximum MAC (digest) size used by the SSL library. Currently
 * maximum of 20 is used by SHA1, but we reserve for future extension for
 * 512-bit hashes.
 */

# define SSL3_RT_MAX_MD_SIZE                     64

/*
 * Maximum block size used in all ciphersuites. Currently 16 for AES.
 */

# define SSL_RT_MAX_CIPHER_BLOCK_SIZE            16

# define SSL3_RT_MAX_EXTRA                       (16384)

/* Maximum plaintext length: defined by SSL/TLS standards */
# define SSL3_RT_MAX_PLAIN_LENGTH                16384
/* Maximum compression overhead: defined by SSL/TLS standards */
# define SSL3_RT_MAX_COMPRESSED_OVERHEAD         1024

/*
 * The standards give a maximum encryption overhead of 1024 bytes. In
 * practice the value is lower than this. The overhead is the maximum number
 * of padding bytes (256) plus the mac size.
 */
# define SSL3_RT_MAX_ENCRYPTED_OVERHEAD  (256 + SSL3_RT_MAX_MD_SIZE)

/*
 * OpenSSL currently only uses a padding length of at most one block so the
 * send overhead is smaller.
 */

# define SSL3_RT_SEND_MAX_ENCRYPTED_OVERHEAD \
                        (SSL_RT_MAX_CIPHER_BLOCK_SIZE + SSL3_RT_MAX_MD_SIZE)

/* If compression isn't used don't include the compression overhead */

# ifdef OPENSSL_NO_COMP
#  define SSL3_RT_MAX_COMPRESSED_LENGTH           SSL3_RT_MAX_PLAIN_LENGTH
# else
#  define SSL3_RT_MAX_COMPRESSED_LENGTH   \
                (SSL3_RT_MAX_PLAIN_LENGTH+SSL3_RT_MAX_COMPRESSED_OVERHEAD)
# endif
# define SSL3_RT_MAX_ENCRYPTED_LENGTH    \
                (SSL3_RT_MAX_ENCRYPTED_OVERHEAD+SSL3_RT_MAX_COMPRESSED_LENGTH)
# define SSL3_RT_MAX_PACKET_SIZE         \
                (SSL3_RT_MAX_ENCRYPTED_LENGTH+SSL3_RT_HEADER_LENGTH)

# define SSL3_MD_CLIENT_FINISHED_CONST   "\x43\x4C\x4E\x54"
# define SSL3_MD_SERVER_FINISHED_CONST   "\x53\x52\x56\x52"

# define SSL3_VERSION                    0x0300
# define SSL3_VERSION_MAJOR              0x03
# define SSL3_VERSION_MINOR              0x00

# define SSL3_RT_CHANGE_CIPHER_SPEC      20
# define SSL3_RT_ALERT                   21
# define SSL3_RT_HANDSHAKE               22
# define SSL3_RT_APPLICATION_DATA        23
# define DTLS1_RT_HEARTBEAT              24

/* Pseudo content types to indicate additional parameters */
# define TLS1_RT_CRYPTO                  0x1000
# define TLS1_RT_CRYPTO_PREMASTER        (TLS1_RT_CRYPTO | 0x1)
# define TLS1_RT_CRYPTO_CLIENT_RANDOM    (TLS1_RT_CRYPTO | 0x2)
# define TLS1_RT_CRYPTO_SERVER_RANDOM    (TLS1_RT_CRYPTO | 0x3)
# define TLS1_RT_CRYPTO_MASTER           (TLS1_RT_CRYPTO | 0x4)

# define TLS1_RT_CRYPTO_READ             0x0000
# define TLS1_RT_CRYPTO_WRITE            0x0100
# define TLS1_RT_CRYPTO_MAC              (TLS1_RT_CRYPTO | 0x5)
# define TLS1_RT_CRYPTO_KEY              (TLS1_RT_CRYPTO | 0x6)
# define TLS1_RT_CRYPTO_IV               (TLS1_RT_CRYPTO | 0x7)
# define TLS1_RT_CRYPTO_FIXED_IV         (TLS1_RT_CRYPTO | 0x8)

/* Pseudo content type for SSL/TLS header info */
# define SSL3_RT_HEADER                  0x100

# define SSL3_AL_WARNING                 1
# define SSL3_AL_FATAL                   2

# define SSL3_AD_CLOSE_NOTIFY             0
# define SSL3_AD_UNEXPECTED_MESSAGE      10/* fatal */
# define SSL3_AD_BAD_RECORD_MAC          20/* fatal */
# define SSL3_AD_DECOMPRESSION_FAILURE   30/* fatal */
# define SSL3_AD_HANDSHAKE_FAILURE       40/* fatal */
# define SSL3_AD_NO_CERTIFICATE          41
# define SSL3_AD_BAD_CERTIFICATE         42
# define SSL3_AD_UNSUPPORTED_CERTIFICATE 43
# define SSL3_AD_CERTIFICATE_REVOKED     44
# define SSL3_AD_CERTIFICATE_EXPIRED     45
# define SSL3_AD_CERTIFICATE_UNKNOWN     46
# define SSL3_AD_ILLEGAL_PARAMETER       47/* fatal */

# define TLS1_HB_REQUEST         1
# define TLS1_HB_RESPONSE        2


# define SSL3_CT_RSA_SIGN                        1
# define SSL3_CT_DSS_SIGN                        2
# define SSL3_CT_RSA_FIXED_DH                    3
# define SSL3_CT_DSS_FIXED_DH                    4
# define SSL3_CT_RSA_EPHEMERAL_DH                5
# define SSL3_CT_DSS_EPHEMERAL_DH                6
# define SSL3_CT_FORTEZZA_DMS                    20
/*
 * SSL3_CT_NUMBER is used to size arrays and it must be large enough to
 * contain all of the cert types defined either for SSLv3 and TLSv1.
 */
# define SSL3_CT_NUMBER                  9

# define SSL3_FLAGS_NO_RENEGOTIATE_CIPHERS       0x0001

/* Removed from OpenSSL 1.1.0 */
# define TLS1_FLAGS_TLS_PADDING_BUG              0x0

# define TLS1_FLAGS_SKIP_CERT_VERIFY             0x0010

/* Set if we encrypt then mac instead of usual mac then encrypt */
# define TLS1_FLAGS_ENCRYPT_THEN_MAC             0x0100

/* Set if extended master secret extension received from peer */
# define TLS1_FLAGS_RECEIVED_EXTMS               0x0200

# define SSL3_MT_HELLO_REQUEST                   0
# define SSL3_MT_CLIENT_HELLO                    1
# define SSL3_MT_SERVER_HELLO                    2
# define SSL3_MT_NEWSESSION_TICKET               4
# define SSL3_MT_CERTIFICATE                     11
# define SSL3_MT_SERVER_KEY_EXCHANGE             12
# define SSL3_MT_CERTIFICATE_REQUEST             13
# define SSL3_MT_SERVER_DONE                     14
# define SSL3_MT_CERTIFICATE_VERIFY              15
# define SSL3_MT_CLIENT_KEY_EXCHANGE             16
# define SSL3_MT_FINISHED                        20
# define SSL3_MT_CERTIFICATE_STATUS              22
# ifndef OPENSSL_NO_NEXTPROTONEG
#  define SSL3_MT_NEXT_PROTO                      67
# endif
# define DTLS1_MT_HELLO_VERIFY_REQUEST    3

/* Dummy message type for handling CCS like a normal handshake message */
# define SSL3_MT_CHANGE_CIPHER_SPEC              0x0101

# define SSL3_MT_CCS                             1

/* These are used when changing over to a new cipher */
# define SSL3_CC_READ            0x01
# define SSL3_CC_WRITE           0x02
# define SSL3_CC_CLIENT          0x10
# define SSL3_CC_SERVER          0x20
# define SSL3_CHANGE_CIPHER_CLIENT_WRITE (SSL3_CC_CLIENT|SSL3_CC_WRITE)
# define SSL3_CHANGE_CIPHER_SERVER_READ  (SSL3_CC_SERVER|SSL3_CC_READ)
# define SSL3_CHANGE_CIPHER_CLIENT_READ  (SSL3_CC_CLIENT|SSL3_CC_READ)
# define SSL3_CHANGE_CIPHER_SERVER_WRITE (SSL3_CC_SERVER|SSL3_CC_WRITE)

#ifdef  __cplusplus
}
#endif
#endif