1 /* crypto/ecdh/ecdh.h */
2 /* ====================================================================
3 * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
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.
9 * The ECC Code is licensed pursuant to the OpenSSL open source
10 * license provided below.
12 * In addition, Sun covenants to all licensees who provide a reciprocal
13 * covenant with respect to their own patents if any, not to sue under
14 * current and future patent claims necessarily infringed by the making,
15 * using, practicing, selling, offering for sale and/or otherwise
16 * disposing of the ECC Code as delivered hereunder (or portions thereof),
17 * provided that such covenant shall not apply:
18 * 1) for code that a licensee deletes from the ECC Code;
19 * 2) separates from the ECC Code; or
20 * 3) for infringements caused by:
21 * i) the modification of the ECC Code or
22 * ii) the combination of the ECC Code with other software or
23 * devices where such combination causes the infringement.
25 * The ECDH software is originally written by Douglas Stebila of
26 * Sun Microsystems Laboratories.
29 /* ====================================================================
30 * Copyright (c) 2000-2002 The OpenSSL Project. All rights reserved.
32 * Redistribution and use in source and binary forms, with or without
33 * modification, are permitted provided that the following conditions
36 * 1. Redistributions of source code must retain the above copyright
37 * notice, this list of conditions and the following disclaimer.
39 * 2. Redistributions in binary form must reproduce the above copyright
40 * notice, this list of conditions and the following disclaimer in
41 * the documentation and/or other materials provided with the
44 * 3. All advertising materials mentioning features or use of this
45 * software must display the following acknowledgment:
46 * "This product includes software developed by the OpenSSL Project
47 * for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
49 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
50 * endorse or promote products derived from this software without
51 * prior written permission. For written permission, please contact
52 * licensing@OpenSSL.org.
54 * 5. Products derived from this software may not be called "OpenSSL"
55 * nor may "OpenSSL" appear in their names without prior written
56 * permission of the OpenSSL Project.
58 * 6. Redistributions of any form whatsoever must retain the following
60 * "This product includes software developed by the OpenSSL Project
61 * for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
63 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
64 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
65 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
66 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
67 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
68 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
69 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
70 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
71 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
72 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
73 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
74 * OF THE POSSIBILITY OF SUCH DAMAGE.
75 * ====================================================================
77 * This product includes cryptographic software written by Eric Young
78 * (eay@cryptsoft.com). This product includes software written by Tim
79 * Hudson (tjh@cryptsoft.com).
85 #ifdef OPENSSL_NO_ECDH
86 #error ECDH is disabled.
89 #include <openssl/bn.h>
90 #include <openssl/ec.h>
91 #include <openssl/ossl_typ.h>
97 typedef struct ecdh_method
100 int (*compute_key)(unsigned char *key,const EC_POINT *pub_key, EC_KEY *ecdh);
102 int (*init)(EC_KEY *eckey);
103 int (*finish)(EC_KEY *eckey);
109 typedef struct ecdh_data_st {
110 /* EC_KEY_METH_DATA part */
111 int (*init)(EC_KEY *);
112 void (*finish)(EC_KEY *);
113 /* method specific part */
116 const ECDH_METHOD *meth;
117 CRYPTO_EX_DATA ex_data;
120 /* ECDH_DATA functions */
121 ECDH_DATA *ECDH_DATA_new(void);
122 ECDH_DATA *ECDH_DATA_new_method(ENGINE *);
123 void ECDH_DATA_free(ECDH_DATA *);
125 ECDH_DATA *ecdh_check(EC_KEY *);
128 const ECDH_METHOD *ECDH_OpenSSL(void);
130 void ECDH_set_default_method(const ECDH_METHOD *);
131 const ECDH_METHOD *ECDH_get_default_method(void);
132 int ECDH_set_method(EC_KEY *, const ECDH_METHOD *);
134 int ECDH_size(const EC_KEY *);
135 int ECDH_compute_key(unsigned char *key,const EC_POINT *pub_key, EC_KEY *ecdh);
138 int ECDH_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new
139 *new_func, CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
140 int ECDH_set_ex_data(EC_KEY *d, int idx, void *arg);
141 void *ECDH_get_ex_data(EC_KEY *d, int idx);
144 /* BEGIN ERROR CODES */
145 /* The following lines are auto generated by the script mkerr.pl. Any changes
146 * made after this point may be overwritten when the script is next run.
148 void ERR_load_ECDH_strings(void);
150 /* Error codes for the ECDH functions. */
152 /* Function codes. */
153 #define ECDH_F_ECDH_COMPUTE_KEY 100
154 #define ECDH_F_ECDH_DATA_NEW 101
157 #define ECDH_R_NO_PRIVATE_VALUE 100
158 #define ECDH_R_POINT_ARITHMETIC_FAILURE 101
159 #define ECDH_R_SHA1_DIGEST_FAILED 102