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/* crypto/engine/engine_int.h */
/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
* project 2000.
*/
/* ====================================================================
* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. All advertising materials mentioning features or use of this
* software must display the following acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
*
* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
* endorse or promote products derived from this software without
* prior written permission. For written permission, please contact
* licensing@OpenSSL.org.
*
* 5. Products derived from this software may not be called "OpenSSL"
* nor may "OpenSSL" appear in their names without prior written
* permission of the OpenSSL Project.
*
* 6. Redistributions of any form whatsoever must retain the following
* acknowledgment:
* "This product includes software developed by the OpenSSL Project
* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
*
* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
* OF THE POSSIBILITY OF SUCH DAMAGE.
* ====================================================================
*
* This product includes cryptographic software written by Eric Young
* (eay@cryptsoft.com). This product includes software written by Tim
* Hudson (tjh@cryptsoft.com).
*
*/
#ifndef HEADER_ENGINE_INT_H
#define HEADER_ENGINE_INT_H
/* Take public definitions from engine.h */
#include <openssl/engine.h>
#ifdef __cplusplus
extern "C" {
#endif
/* If we compile with this symbol defined, then both reference counts in the
* ENGINE structure will be monitored with a line of output on stderr for each
* change. This prints the engine's pointer address (truncated to unsigned int),
* "struct" or "funct" to indicate the reference type, the before and after
* reference count, and the file:line-number pair. The "engine_ref_debug"
* statements must come *after* the change. */
#ifdef ENGINE_REF_COUNT_DEBUG
#define engine_ref_debug(e, isfunct, diff) \
fprintf(stderr, "engine: %08x %s from %d to %d (%s:%d)\n", \
(unsigned int)(e), (isfunct ? "funct" : "struct"), \
((isfunct) ? ((e)->funct_ref - (diff)) : ((e)->struct_ref - (diff))), \
((isfunct) ? (e)->funct_ref : (e)->struct_ref), \
(__FILE__), (__LINE__));
#else
#define engine_ref_debug(e, isfunct, diff)
#endif
typedef struct engine_evp_cipher_st
{
const EVP_CIPHER *cipher;
} ENGINE_EVP_CIPHER;
DECLARE_STACK_OF(ENGINE_EVP_CIPHER)
void ENGINE_free_engine_cipher(ENGINE_EVP_CIPHER *p);
/* NB: Bitwise OR-able values for the "flags" variable in ENGINE are now exposed
* in engine.h. */
/* This is a structure for storing implementations of various crypto
* algorithms and functions. */
struct engine_st
{
const char *id;
const char *name;
const RSA_METHOD *rsa_meth;
const DSA_METHOD *dsa_meth;
const DH_METHOD *dh_meth;
const RAND_METHOD *rand_meth;
BN_MOD_EXP bn_mod_exp;
BN_MOD_EXP_CRT bn_mod_exp_crt;
ENGINE_GEN_INT_FUNC_PTR init;
ENGINE_GEN_INT_FUNC_PTR finish;
ENGINE_CTRL_FUNC_PTR ctrl;
ENGINE_LOAD_KEY_PTR load_privkey;
ENGINE_LOAD_KEY_PTR load_pubkey;
STACK_OF(ENGINE_EVP_CIPHER) *ciphers;
const ENGINE_CMD_DEFN *cmd_defns;
int flags;
/* reference count on the structure itself */
int struct_ref;
/* reference count on usability of the engine type. NB: This
* controls the loading and initialisation of any functionlity
* required by this engine, whereas the previous count is
* simply to cope with (de)allocation of this structure. Hence,
* running_ref <= struct_ref at all times. */
int funct_ref;
/* A place to store per-key data */
CRYPTO_EX_DATA ex_data;
/* Used to maintain the linked-list of engines. */
struct engine_st *prev;
struct engine_st *next;
};
/* BUILT-IN ENGINES. (these functions are only ever called once and
* do not return references - they are purely for bootstrapping). */
/* Returns a structure of software only methods (the default). */
ENGINE *ENGINE_openssl(void);
/* Returns the "dynamic" ENGINE for loading entire ENGINE implementations from
* shared libraries. */
ENGINE *ENGINE_dynamic(void);
#ifndef OPENSSL_NO_HW
#ifndef OPENSSL_NO_HW_CSWIFT
/* Returns a structure of cswift methods ... NB: This can exist and be
* "used" even on non-cswift systems because the "init" will fail if the
* card/library are not found. */
ENGINE *ENGINE_cswift(void);
#endif /* !OPENSSL_NO_HW_CSWIFT */
#ifndef OPENSSL_NO_HW_NCIPHER
ENGINE *ENGINE_ncipher(void);
#endif /* !OPENSSL_NO_HW_NCIPHER */
#ifndef OPENSSL_NO_HW_ATALLA
/* Returns a structure of atalla methods. */
ENGINE *ENGINE_atalla(void);
#endif /* !OPENSSL_NO_HW_ATALLA */
#ifndef OPENSSL_NO_HW_NURON
ENGINE *ENGINE_nuron(void);
#endif /* !OPENSSL_NO_HW_NURON */
#ifndef OPENSSL_NO_HW_UBSEC
ENGINE *ENGINE_ubsec(void);
#endif /* !OPENSSL_NO_HW_UBSEC */
#ifdef OPENSSL_OPENBSD_DEV_CRYPTO
ENGINE *ENGINE_openbsd_dev_crypto(void);
#endif
#endif /* !OPENSSL_NO_HW */
#ifdef __cplusplus
}
#endif
#endif /* HEADER_ENGINE_INT_H */
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