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      1 /* crypto/ecdh/ecdh.h */
      2 /* ====================================================================
      3  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
      4  *
      5  * The Elliptic Curve Public-Key Crypto Library (ECC Code) included
      6  * herein is developed by SUN MICROSYSTEMS, INC., and is contributed
      7  * to the OpenSSL project.
      8  *
      9  * The ECC Code is licensed pursuant to the OpenSSL open source
     10  * license provided below.
     11  *
     12  * The ECDH software is originally written by Douglas Stebila of
     13  * Sun Microsystems Laboratories.
     14  *
     15  */
     16 /* ====================================================================
     17  * Copyright (c) 2000-2002 The OpenSSL Project.  All rights reserved.
     18  *
     19  * Redistribution and use in source and binary forms, with or without
     20  * modification, are permitted provided that the following conditions
     21  * are met:
     22  *
     23  * 1. Redistributions of source code must retain the above copyright
     24  *    notice, this list of conditions and the following disclaimer.
     25  *
     26  * 2. Redistributions in binary form must reproduce the above copyright
     27  *    notice, this list of conditions and the following disclaimer in
     28  *    the documentation and/or other materials provided with the
     29  *    distribution.
     30  *
     31  * 3. All advertising materials mentioning features or use of this
     32  *    software must display the following acknowledgment:
     33  *    "This product includes software developed by the OpenSSL Project
     34  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
     35  *
     36  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
     37  *    endorse or promote products derived from this software without
     38  *    prior written permission. For written permission, please contact
     39  *    licensing (at) OpenSSL.org.
     40  *
     41  * 5. Products derived from this software may not be called "OpenSSL"
     42  *    nor may "OpenSSL" appear in their names without prior written
     43  *    permission of the OpenSSL Project.
     44  *
     45  * 6. Redistributions of any form whatsoever must retain the following
     46  *    acknowledgment:
     47  *    "This product includes software developed by the OpenSSL Project
     48  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
     49  *
     50  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
     51  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     52  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     53  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
     54  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
     55  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
     56  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
     57  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     58  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
     59  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     60  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
     61  * OF THE POSSIBILITY OF SUCH DAMAGE.
     62  * ====================================================================
     63  *
     64  * This product includes cryptographic software written by Eric Young
     65  * (eay (at) cryptsoft.com).  This product includes software written by Tim
     66  * Hudson (tjh (at) cryptsoft.com).
     67  *
     68  */
     69 #ifndef HEADER_ECDH_H
     70 #define HEADER_ECDH_H
     71 
     72 #include <openssl/opensslconf.h>
     73 
     74 #ifdef OPENSSL_NO_ECDH
     75 #error ECDH is disabled.
     76 #endif
     77 
     78 #include <openssl/ec.h>
     79 #include <openssl/ossl_typ.h>
     80 #ifndef OPENSSL_NO_DEPRECATED
     81 #include <openssl/bn.h>
     82 #endif
     83 
     84 #ifdef __cplusplus
     85 extern "C" {
     86 #endif
     87 
     88 const ECDH_METHOD *ECDH_OpenSSL(void);
     89 
     90 void	  ECDH_set_default_method(const ECDH_METHOD *);
     91 const ECDH_METHOD *ECDH_get_default_method(void);
     92 int 	  ECDH_set_method(EC_KEY *, const ECDH_METHOD *);
     93 
     94 int ECDH_compute_key(void *out, size_t outlen, const EC_POINT *pub_key, EC_KEY *ecdh,
     95                      void *(*KDF)(const void *in, size_t inlen, void *out, size_t *outlen));
     96 
     97 int 	  ECDH_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new
     98 		*new_func, CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
     99 int 	  ECDH_set_ex_data(EC_KEY *d, int idx, void *arg);
    100 void 	  *ECDH_get_ex_data(EC_KEY *d, int idx);
    101 
    102 
    103 /* BEGIN ERROR CODES */
    104 /* The following lines are auto generated by the script mkerr.pl. Any changes
    105  * made after this point may be overwritten when the script is next run.
    106  */
    107 void ERR_load_ECDH_strings(void);
    108 
    109 /* Error codes for the ECDH functions. */
    110 
    111 /* Function codes. */
    112 #define ECDH_F_ECDH_COMPUTE_KEY				 100
    113 #define ECDH_F_ECDH_DATA_NEW_METHOD			 101
    114 
    115 /* Reason codes. */
    116 #define ECDH_R_KDF_FAILED				 102
    117 #define ECDH_R_NO_PRIVATE_VALUE				 100
    118 #define ECDH_R_POINT_ARITHMETIC_FAILURE			 101
    119 
    120 #ifdef  __cplusplus
    121 }
    122 #endif
    123 #endif
    124