include/openssl/dtls1.h

   1 /*
   2  * DTLS implementation written by Nagendra Modadugu
   3  * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 1999-2005 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    openssl-core@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58
  59 #ifndef HEADER_DTLS1_H
  60 # define HEADER_DTLS1_H
  61
  62 #ifdef  __cplusplus
  63 extern "C" {
  64 #endif
  65
  66 # define DTLS1_VERSION                   0xFEFF
  67 # define DTLS1_2_VERSION                 0xFEFD
  68 # define DTLS_MIN_VERSION                DTLS1_VERSION
  69 # define DTLS_MAX_VERSION                DTLS1_2_VERSION
  70 # define DTLS1_VERSION_MAJOR             0xFE
  71
  72 # define DTLS1_BAD_VER                   0x0100
  73
  74 /* Special value for method supporting multiple versions */
  75 # define DTLS_ANY_VERSION                0x1FFFF
  76
  77 /* lengths of messages */
  78 # define DTLS1_COOKIE_LENGTH                     256
  79
  80 # define DTLS1_RT_HEADER_LENGTH                  13
  81
  82 # define DTLS1_HM_HEADER_LENGTH                  12
  83
  84 # define DTLS1_HM_BAD_FRAGMENT                   -2
  85 # define DTLS1_HM_FRAGMENT_RETRY                 -3
  86
  87 # define DTLS1_CCS_HEADER_LENGTH                  1
  88
  89 # ifdef DTLS1_AD_MISSING_HANDSHAKE_MESSAGE
  90 #  define DTLS1_AL_HEADER_LENGTH                   7
  91 # else
  92 #  define DTLS1_AL_HEADER_LENGTH                   2
  93 # endif
  94
  95
  96 /* Timeout multipliers (timeout slice is defined in apps/timeouts.h */
  97 # define DTLS1_TMO_READ_COUNT                      2
  98 # define DTLS1_TMO_WRITE_COUNT                     2
  99
 100 # define DTLS1_TMO_ALERT_COUNT                     12
 101
 102 #ifdef  __cplusplus
 103 }
 104 #endif
 105 #endif