crypto/ecdh/ech_locl.h

   1 /* crypto/ecdh/ech_locl.h */
   2 /* ====================================================================
   3  * Copyright (c) 2000-2005 The OpenSSL Project.  All rights reserved.
   4  *
   5  * Redistribution and use in source and binary forms, with or without
   6  * modification, are permitted provided that the following conditions
   7  * are met:
   8  *
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  *
  12  * 2. Redistributions in binary form must reproduce the above copyright
  13  *    notice, this list of conditions and the following disclaimer in
  14  *    the documentation and/or other materials provided with the
  15  *    distribution.
  16  *
  17  * 3. All advertising materials mentioning features or use of this
  18  *    software must display the following acknowledgment:
  19  *    "This product includes software developed by the OpenSSL Project
  20  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  21  *
  22  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  23  *    endorse or promote products derived from this software without
  24  *    prior written permission. For written permission, please contact
  25  *    licensing@OpenSSL.org.
  26  *
  27  * 5. Products derived from this software may not be called "OpenSSL"
  28  *    nor may "OpenSSL" appear in their names without prior written
  29  *    permission of the OpenSSL Project.
  30  *
  31  * 6. Redistributions of any form whatsoever must retain the following
  32  *    acknowledgment:
  33  *    "This product includes software developed by the OpenSSL Project
  34  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  35  *
  36  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  37  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  38  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  39  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  40  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  41  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  42  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  43  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  44  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  45  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  46  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  47  * OF THE POSSIBILITY OF SUCH DAMAGE.
  48  * ====================================================================
  49  *
  50  * This product includes cryptographic software written by Eric Young
  51  * (eay@cryptsoft.com).  This product includes software written by Tim
  52  * Hudson (tjh@cryptsoft.com).
  53  *
  54  */
  55
  56 #ifndef HEADER_ECH_LOCL_H
  57 # define HEADER_ECH_LOCL_H
  58
  59 # include <openssl/ecdh.h>
  60
  61 #ifdef  __cplusplus
  62 extern "C" {
  63 #endif
  64
  65 struct ecdh_method {
  66     const char *name;
  67     int (*compute_key) (void *key, size_t outlen, const EC_POINT *pub_key,
  68                         EC_KEY *ecdh, void *(*KDF) (const void *in,
  69                                                     size_t inlen, void *out,
  70                                                     size_t *outlen));
  71 # if 0
  72     int (*init) (EC_KEY *eckey);
  73     int (*finish) (EC_KEY *eckey);
  74 # endif
  75     int flags;
  76     char *app_data;
  77 };
  78
  79 typedef struct ecdh_data_st {
  80     /* EC_KEY_METH_DATA part */
  81     int (*init) (EC_KEY *);
  82     /* method specific part */
  83     ENGINE *engine;
  84     int flags;
  85     const ECDH_METHOD *meth;
  86     CRYPTO_EX_DATA ex_data;
  87 } ECDH_DATA;
  88
  89 ECDH_DATA *ecdh_check(EC_KEY *);
  90
  91 #ifdef  __cplusplus
  92 }
  93 #endif
  94
  95 #endif                          /* HEADER_ECH_LOCL_H */