lib/libcrypto/ecdh/ech_locl.h

   1 /* $OpenBSD: ech_locl.h,v 1.5 2016/12/21 15:49:29 jsing Exp $ */
   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 __BEGIN_HIDDEN_DECLS
  62
  63 struct ecdh_method {
  64         const char *name;
  65         int (*compute_key)(void *key, size_t outlen, const EC_POINT *pub_key, EC_KEY *ecdh,
  66             void *(*KDF)(const void *in, size_t inlen, void *out, size_t *outlen));
  67         int flags;
  68         char *app_data;
  69 };
  70
  71 /* If this flag is set the ECDH method is FIPS compliant and can be used
  72  * in FIPS mode. This is set in the validated module method. If an
  73  * application sets this flag in its own methods it is its responsibility
  74  * to ensure the result is compliant.
  75  */
  76
  77 #define ECDH_FLAG_FIPS_METHOD   0x1
  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 __END_HIDDEN_DECLS
  92
  93 #endif /* HEADER_ECH_LOCL_H */