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1/* crypto/engine/engine_int.h */
2/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
3 * project 2000.
4 */
5/* ====================================================================
6 * Copyright (c) 1999 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 * licensing@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_ENGINE_INT_H
60#define HEADER_ENGINE_INT_H
61
62#include <openssl/rsa.h>
63#include <openssl/dsa.h>
64#include <openssl/dh.h>
65#include <openssl/rand.h>
66#include <openssl/bn.h>
67#include <openssl/evp.h>
68
69#ifdef __cplusplus
70extern "C" {
71#endif
72
73/* Bitwise OR-able values for the "flags" variable in ENGINE. */
74#define ENGINE_FLAGS_MALLOCED 0x0001
75
76#ifndef HEADER_ENGINE_H
77/* Regrettably, we need to reproduce the "BN" function types here
78 * because there is no such "BIGNUM_METHOD" as there is with RSA,
79 * DSA, etc. We do this so that we don't have a case where engine.h
80 * and engine_int.h conflict with each other. */
81typedef int (*BN_MOD_EXP)(BIGNUM *r, BIGNUM *a, const BIGNUM *p,
82 const BIGNUM *m, BN_CTX *ctx);
83
84/* private key operation for RSA, provided seperately in case other
85 * RSA implementations wish to use it. */
86typedef int (*BN_MOD_EXP_CRT)(BIGNUM *r, BIGNUM *a, const BIGNUM *p,
87 const BIGNUM *q, const BIGNUM *dmp1, const BIGNUM *dmq1,
88 const BIGNUM *iqmp, BN_CTX *ctx);
89
90/* Generic function pointer */
91typedef int (*ENGINE_GEN_FUNC_PTR)();
92/* Generic function pointer taking no arguments */
93typedef int (*ENGINE_GEN_INT_FUNC_PTR)(void);
94/* Specific control function pointer */
95typedef int (*ENGINE_CTRL_FUNC_PTR)(int cmd, long i, void *p, void (*f)());
96
97#endif
98
99/* This is a structure for storing implementations of various crypto
100 * algorithms and functions. */
101typedef struct engine_st
102 {
103 const char *id;
104 const char *name;
105 RSA_METHOD *rsa_meth;
106 DSA_METHOD *dsa_meth;
107 DH_METHOD *dh_meth;
108 RAND_METHOD *rand_meth;
109 BN_MOD_EXP bn_mod_exp;
110 BN_MOD_EXP_CRT bn_mod_exp_crt;
111 int (*init)(void);
112 int (*finish)(void);
113 int (*ctrl)(int cmd, long i, void *p, void (*f)());
114 EVP_PKEY *(*load_privkey)(const char *key_id, const char *passphrase);
115 EVP_PKEY *(*load_pubkey)(const char *key_id, const char *passphrase);
116 int flags;
117 /* reference count on the structure itself */
118 int struct_ref;
119 /* reference count on usability of the engine type. NB: This
120 * controls the loading and initialisation of any functionlity
121 * required by this engine, whereas the previous count is
122 * simply to cope with (de)allocation of this structure. Hence,
123 * running_ref <= struct_ref at all times. */
124 int funct_ref;
125 /* Used to maintain the linked-list of engines. */
126 struct engine_st *prev;
127 struct engine_st *next;
128 } ENGINE;
129
130/* BUILT-IN ENGINES. (these functions are only ever called once and
131 * do not return references - they are purely for bootstrapping). */
132
133/* Returns a structure of software only methods (the default). */
134ENGINE *ENGINE_openssl();
135
136#ifndef NO_HW
137
138#ifndef NO_HW_CSWIFT
139/* Returns a structure of cswift methods ... NB: This can exist and be
140 * "used" even on non-cswift systems because the "init" will fail if the
141 * card/library are not found. */
142ENGINE *ENGINE_cswift();
143#endif /* !NO_HW_CSWIFT */
144
145#ifndef NO_HW_NCIPHER
146ENGINE *ENGINE_ncipher();
147#endif /* !NO_HW_NCIPHER */
148
149#ifndef NO_HW_ATALLA
150/* Returns a structure of atalla methods. */
151ENGINE *ENGINE_atalla();
152#endif /* !NO_HW_ATALLA */
153
154#endif /* !NO_HW */
155
156#ifdef __cplusplus
157}
158#endif
159
160#endif /* HEADER_ENGINE_INT_H */
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