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 /*
  * Copyright 1995-2023 The OpenSSL Project Authors. All Rights Reserved.
  * Copyright (c) 2002, Oracle and/or its affiliates. All rights reserved
  *
  * Licensed under the Apache License 2.0 (the "License").  You may not use
  * this file except in compliance with the License.  You can obtain a copy
  * in the file LICENSE in the source distribution or at
  * https://www.openssl.org/source/license.html
  */
 
 #ifndef OPENSSL_SSL3_H
 # define OPENSSL_SSL3_H
 # pragma once
 
 # include <openssl/macros.h>
 # ifndef OPENSSL_NO_DEPRECATED_3_0
 #  define HEADER_SSL3_H
 # endif
 
 # include <openssl/comp.h>
 # 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
 
 /* a bundle of RFC standard cipher names, generated from ssl3_ciphers[] */
 # define SSL3_RFC_RSA_NULL_MD5                   "TLS_RSA_WITH_NULL_MD5"
 # define SSL3_RFC_RSA_NULL_SHA                   "TLS_RSA_WITH_NULL_SHA"
 # define SSL3_RFC_RSA_DES_192_CBC3_SHA           "TLS_RSA_WITH_3DES_EDE_CBC_SHA"
 # define SSL3_RFC_DHE_DSS_DES_192_CBC3_SHA       "TLS_DHE_DSS_WITH_3DES_EDE_CBC_SHA"
 # define SSL3_RFC_DHE_RSA_DES_192_CBC3_SHA       "TLS_DHE_RSA_WITH_3DES_EDE_CBC_SHA"
 # define SSL3_RFC_ADH_DES_192_CBC_SHA            "TLS_DH_anon_WITH_3DES_EDE_CBC_SHA"
 # define SSL3_RFC_RSA_IDEA_128_SHA               "TLS_RSA_WITH_IDEA_CBC_SHA"
 # define SSL3_RFC_RSA_RC4_128_MD5                "TLS_RSA_WITH_RC4_128_MD5"
 # define SSL3_RFC_RSA_RC4_128_SHA                "TLS_RSA_WITH_RC4_128_SHA"
 # define SSL3_RFC_ADH_RC4_128_MD5                "TLS_DH_anon_WITH_RC4_128_MD5"
 
 # 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)
 # define SSL3_RT_MAX_TLS13_ENCRYPTED_OVERHEAD  256
 
 /*
  * 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_TLS13_ENCRYPTED_LENGTH \
             (SSL3_RT_MAX_PLAIN_LENGTH + SSL3_RT_MAX_TLS13_ENCRYPTED_OVERHEAD)
 # 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"
 
 /* SSL3_VERSION is defined in prov_ssl.h */
 # 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
 
 /* 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 types for SSL/TLS header info */
 # define SSL3_RT_HEADER                  0x100
 # define SSL3_RT_INNER_CONTENT_TYPE      0x101
 
 /* Pseudo content types for QUIC */
 # define SSL3_RT_QUIC_DATAGRAM            0x200
 # define SSL3_RT_QUIC_PACKET              0x201
 # define SSL3_RT_QUIC_FRAME_FULL          0x202
 # define SSL3_RT_QUIC_FRAME_HEADER        0x203
 # define SSL3_RT_QUIC_FRAME_PADDING       0x204
 
 # 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 for *either* SSLv3 and TLSv1.
  */
 # define SSL3_CT_NUMBER                  12
 
 # if defined(TLS_CT_NUMBER)
 #  if TLS_CT_NUMBER != SSL3_CT_NUMBER
 #    error "SSL/TLS CT_NUMBER values do not match"
 #  endif
 # endif
 
 /* No longer used as of OpenSSL 1.1.1 */
 # 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_READ        0x0100
 # define TLS1_FLAGS_ENCRYPT_THEN_MAC             TLS1_FLAGS_ENCRYPT_THEN_MAC_READ
 
 /* Set if extended master secret extension received from peer */
 # define TLS1_FLAGS_RECEIVED_EXTMS               0x0200
 
 # define TLS1_FLAGS_ENCRYPT_THEN_MAC_WRITE       0x0400
 
 # define TLS1_FLAGS_STATELESS                    0x0800
 
 /* Set if extended master secret extension required on renegotiation */
 # define TLS1_FLAGS_REQUIRED_EXTMS               0x1000
 
 /* 0x2000 is reserved for TLS1_FLAGS_QUIC (internal) */
 
 # 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_END_OF_EARLY_DATA               5
 # define SSL3_MT_ENCRYPTED_EXTENSIONS            8
 # 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_URL                 21
 # define SSL3_MT_CERTIFICATE_STATUS              22
 # define SSL3_MT_SUPPLEMENTAL_DATA               23
 # define SSL3_MT_KEY_UPDATE                      24
 # define SSL3_MT_COMPRESSED_CERTIFICATE          25
 # ifndef OPENSSL_NO_NEXTPROTONEG
 #  define SSL3_MT_NEXT_PROTO                     67
 # endif
 # define SSL3_MT_MESSAGE_HASH                    254
 # 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            0x001
 # define SSL3_CC_WRITE           0x002
 # define SSL3_CC_CLIENT          0x010
 # define SSL3_CC_SERVER          0x020
 # define SSL3_CC_EARLY           0x040
 # define SSL3_CC_HANDSHAKE       0x080
 # define SSL3_CC_APPLICATION     0x100
 # 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

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