403 lines
17 KiB
C
403 lines
17 KiB
C
/* openssl/engine.h */
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/* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
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* project 2000.
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*/
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/* ====================================================================
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* Copyright (c) 1999 The OpenSSL Project. All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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*
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* 3. All advertising materials mentioning features or use of this
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* software must display the following acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
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*
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* 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
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* endorse or promote products derived from this software without
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* prior written permission. For written permission, please contact
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* licensing@OpenSSL.org.
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*
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* 5. Products derived from this software may not be called "OpenSSL"
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* nor may "OpenSSL" appear in their names without prior written
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* permission of the OpenSSL Project.
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*
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* 6. Redistributions of any form whatsoever must retain the following
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* acknowledgment:
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* "This product includes software developed by the OpenSSL Project
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* for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
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*
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* THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
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* EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
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* OF THE POSSIBILITY OF SUCH DAMAGE.
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* ====================================================================
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*
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* This product includes cryptographic software written by Eric Young
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* (eay@cryptsoft.com). This product includes software written by Tim
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* Hudson (tjh@cryptsoft.com).
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*
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*/
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#ifndef HEADER_ENGINE_H
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#define HEADER_ENGINE_H
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#include <openssl/bn.h>
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#include <openssl/rsa.h>
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#include <openssl/dsa.h>
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#include <openssl/dh.h>
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#include <openssl/rand.h>
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#include <openssl/evp.h>
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#include <openssl/symhacks.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* These flags are used to control combinations of algorithm (methods)
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* by bitwise "OR"ing. */
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#define ENGINE_METHOD_RSA (unsigned int)0x0001
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#define ENGINE_METHOD_DSA (unsigned int)0x0002
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#define ENGINE_METHOD_DH (unsigned int)0x0004
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#define ENGINE_METHOD_RAND (unsigned int)0x0008
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#define ENGINE_METHOD_BN_MOD_EXP (unsigned int)0x0010
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#define ENGINE_METHOD_BN_MOD_EXP_CRT (unsigned int)0x0020
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/* Obvious all-or-nothing cases. */
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#define ENGINE_METHOD_ALL (unsigned int)0xFFFF
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#define ENGINE_METHOD_NONE (unsigned int)0x0000
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/* These flags are used to tell the ctrl function what should be done.
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* All command numbers are shared between all engines, even if some don't
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* make sense to some engines. In such a case, they do nothing but return
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* the error ENGINE_R_CTRL_COMMAND_NOT_IMPLEMENTED. */
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#define ENGINE_CTRL_SET_LOGSTREAM 1
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#define ENGINE_CTRL_SET_PASSWORD_CALLBACK 2
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/* Flags specific to the nCipher "chil" engine */
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#define ENGINE_CTRL_CHIL_SET_FORKCHECK 100
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/* Depending on the value of the (long)i argument, this sets or
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* unsets the SimpleForkCheck flag in the CHIL API to enable or
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* disable checking and workarounds for applications that fork().
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*/
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#define ENGINE_CTRL_CHIL_NO_LOCKING 101
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/* This prevents the initialisation function from providing mutex
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* callbacks to the nCipher library. */
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/* As we're missing a BIGNUM_METHOD, we need a couple of locally
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* defined function types that engines can implement. */
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#ifndef HEADER_ENGINE_INT_H
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/* mod_exp operation, calculates; r = a ^ p mod m
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* NB: ctx can be NULL, but if supplied, the implementation may use
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* it if it wishes. */
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typedef int (*BN_MOD_EXP)(BIGNUM *r, BIGNUM *a, const BIGNUM *p,
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const BIGNUM *m, BN_CTX *ctx);
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/* private key operation for RSA, provided seperately in case other
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* RSA implementations wish to use it. */
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typedef int (*BN_MOD_EXP_CRT)(BIGNUM *r, BIGNUM *a, const BIGNUM *p,
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const BIGNUM *q, const BIGNUM *dmp1, const BIGNUM *dmq1,
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const BIGNUM *iqmp, BN_CTX *ctx);
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/* Generic function pointer */
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typedef void (*ENGINE_GEN_FUNC_PTR)();
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/* Generic function pointer taking no arguments */
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typedef void (*ENGINE_GEN_INT_FUNC_PTR)(void);
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/* Specific control function pointer */
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typedef int (*ENGINE_CTRL_FUNC_PTR)(int cmd, long i, void *p, void (*f)());
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/* The list of "engine" types is a static array of (const ENGINE*)
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* pointers (not dynamic because static is fine for now and we otherwise
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* have to hook an appropriate load/unload function in to initialise and
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* cleanup). */
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typedef struct engine_st ENGINE;
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#endif
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/* STRUCTURE functions ... all of these functions deal with pointers to
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* ENGINE structures where the pointers have a "structural reference".
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* This means that their reference is to allow access to the structure
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* but it does not imply that the structure is functional. To simply
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* increment or decrement the structural reference count, use ENGINE_new
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* and ENGINE_free. NB: This is not required when iterating using
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* ENGINE_get_next as it will automatically decrement the structural
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* reference count of the "current" ENGINE and increment the structural
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* reference count of the ENGINE it returns (unless it is NULL). */
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/* Get the first/last "ENGINE" type available. */
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ENGINE *ENGINE_get_first(void);
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ENGINE *ENGINE_get_last(void);
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/* Iterate to the next/previous "ENGINE" type (NULL = end of the list). */
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ENGINE *ENGINE_get_next(ENGINE *e);
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ENGINE *ENGINE_get_prev(ENGINE *e);
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/* Add another "ENGINE" type into the array. */
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int ENGINE_add(ENGINE *e);
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/* Remove an existing "ENGINE" type from the array. */
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int ENGINE_remove(ENGINE *e);
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/* Retrieve an engine from the list by its unique "id" value. */
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ENGINE *ENGINE_by_id(const char *id);
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/* These functions are useful for manufacturing new ENGINE
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* structures. They don't address reference counting at all -
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* one uses them to populate an ENGINE structure with personalised
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* implementations of things prior to using it directly or adding
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* it to the builtin ENGINE list in OpenSSL. These are also here
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* so that the ENGINE structure doesn't have to be exposed and
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* break binary compatibility!
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*
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* NB: I'm changing ENGINE_new to force the ENGINE structure to
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* be allocated from within OpenSSL. See the comment for
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* ENGINE_get_struct_size().
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*/
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#if 0
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ENGINE *ENGINE_new(ENGINE *e);
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#else
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ENGINE *ENGINE_new(void);
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#endif
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int ENGINE_free(ENGINE *e);
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int ENGINE_set_id(ENGINE *e, const char *id);
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int ENGINE_set_name(ENGINE *e, const char *name);
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int ENGINE_set_RSA(ENGINE *e, RSA_METHOD *rsa_meth);
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int ENGINE_set_DSA(ENGINE *e, DSA_METHOD *dsa_meth);
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int ENGINE_set_DH(ENGINE *e, DH_METHOD *dh_meth);
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int ENGINE_set_RAND(ENGINE *e, RAND_METHOD *rand_meth);
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int ENGINE_set_BN_mod_exp(ENGINE *e, BN_MOD_EXP bn_mod_exp);
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int ENGINE_set_BN_mod_exp_crt(ENGINE *e, BN_MOD_EXP_CRT bn_mod_exp_crt);
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int ENGINE_set_init_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR init_f);
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int ENGINE_set_finish_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR finish_f);
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int ENGINE_set_ctrl_function(ENGINE *e, ENGINE_CTRL_FUNC_PTR ctrl_f);
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/* These return values from within the ENGINE structure. These can
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* be useful with functional references as well as structural
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* references - it depends which you obtained. Using the result
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* for functional purposes if you only obtained a structural
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* reference may be problematic! */
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const char *ENGINE_get_id(ENGINE *e);
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const char *ENGINE_get_name(ENGINE *e);
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RSA_METHOD *ENGINE_get_RSA(ENGINE *e);
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DSA_METHOD *ENGINE_get_DSA(ENGINE *e);
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DH_METHOD *ENGINE_get_DH(ENGINE *e);
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RAND_METHOD *ENGINE_get_RAND(ENGINE *e);
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BN_MOD_EXP ENGINE_get_BN_mod_exp(ENGINE *e);
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BN_MOD_EXP_CRT ENGINE_get_BN_mod_exp_crt(ENGINE *e);
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ENGINE_GEN_INT_FUNC_PTR ENGINE_get_init_function(ENGINE *e);
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ENGINE_GEN_INT_FUNC_PTR ENGINE_get_finish_function(ENGINE *e);
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ENGINE_CTRL_FUNC_PTR ENGINE_get_ctrl_function(ENGINE *e);
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/* ENGINE_new is normally passed a NULL in the first parameter because
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* the calling code doesn't have access to the definition of the ENGINE
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* structure (for good reason). However, if the caller wishes to use
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* its own memory allocation or use a static array, the following call
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* should be used to check the amount of memory the ENGINE structure
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* will occupy. This will make the code more future-proof.
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*
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* NB: I'm "#if 0"-ing this out because it's better to force the use of
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* internally allocated memory. See similar change in ENGINE_new().
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*/
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#if 0
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int ENGINE_get_struct_size(void);
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#endif
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/* FUNCTIONAL functions. These functions deal with ENGINE structures
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* that have (or will) be initialised for use. Broadly speaking, the
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* structural functions are useful for iterating the list of available
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* engine types, creating new engine types, and other "list" operations.
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* These functions actually deal with ENGINEs that are to be used. As
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* such these functions can fail (if applicable) when particular
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* engines are unavailable - eg. if a hardware accelerator is not
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* attached or not functioning correctly. Each ENGINE has 2 reference
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* counts; structural and functional. Every time a functional reference
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* is obtained or released, a corresponding structural reference is
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* automatically obtained or released too. */
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/* Initialise a engine type for use (or up its reference count if it's
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* already in use). This will fail if the engine is not currently
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* operational and cannot initialise. */
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int ENGINE_init(ENGINE *e);
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/* Free a functional reference to a engine type. This does not require
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* a corresponding call to ENGINE_free as it also releases a structural
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* reference. */
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int ENGINE_finish(ENGINE *e);
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/* Send control parametrised commands to the engine. The possibilities
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* to send down an integer, a pointer to data or a function pointer are
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* provided. Any of the parameters may or may not be NULL, depending
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* on the command number */
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/* WARNING: This is currently experimental and may change radically! */
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int ENGINE_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)());
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/* The following functions handle keys that are stored in some secondary
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* location, handled by the engine. The storage may be on a card or
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* whatever. */
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EVP_PKEY *ENGINE_load_private_key(ENGINE *e, const char *key_id,
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const char *passphrase);
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EVP_PKEY *ENGINE_load_public_key(ENGINE *e, const char *key_id,
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const char *passphrase);
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/* This returns a pointer for the current ENGINE structure that
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* is (by default) performing any RSA operations. The value returned
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* is an incremented reference, so it should be free'd (ENGINE_finish)
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* before it is discarded. */
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ENGINE *ENGINE_get_default_RSA(void);
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/* Same for the other "methods" */
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ENGINE *ENGINE_get_default_DSA(void);
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ENGINE *ENGINE_get_default_DH(void);
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ENGINE *ENGINE_get_default_RAND(void);
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ENGINE *ENGINE_get_default_BN_mod_exp(void);
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ENGINE *ENGINE_get_default_BN_mod_exp_crt(void);
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/* This sets a new default ENGINE structure for performing RSA
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* operations. If the result is non-zero (success) then the ENGINE
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* structure will have had its reference count up'd so the caller
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* should still free their own reference 'e'. */
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int ENGINE_set_default_RSA(ENGINE *e);
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/* Same for the other "methods" */
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int ENGINE_set_default_DSA(ENGINE *e);
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int ENGINE_set_default_DH(ENGINE *e);
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int ENGINE_set_default_RAND(ENGINE *e);
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int ENGINE_set_default_BN_mod_exp(ENGINE *e);
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int ENGINE_set_default_BN_mod_exp_crt(ENGINE *e);
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/* The combination "set" - the flags are bitwise "OR"d from the
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* ENGINE_METHOD_*** defines above. */
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int ENGINE_set_default(ENGINE *e, unsigned int flags);
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/* Obligatory error function. */
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void ERR_load_ENGINE_strings(void);
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/*
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* Error codes for all engine functions. NB: We use "generic"
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* function names instead of per-implementation ones because this
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* levels the playing field for externally implemented bootstrapped
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* support code. As the filename and line number is included, it's
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* more important to indicate the type of function, so that
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* bootstrapped code (that can't easily add its own errors in) can
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* use the same error codes too.
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*/
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/* BEGIN ERROR CODES */
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/* The following lines are auto generated by the script mkerr.pl. Any changes
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* made after this point may be overwritten when the script is next run.
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*/
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/* Error codes for the ENGINE functions. */
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/* Function codes. */
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#define ENGINE_F_ATALLA_FINISH 135
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#define ENGINE_F_ATALLA_INIT 136
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#define ENGINE_F_ATALLA_MOD_EXP 137
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#define ENGINE_F_ATALLA_RSA_MOD_EXP 138
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#define ENGINE_F_CSWIFT_DSA_SIGN 133
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#define ENGINE_F_CSWIFT_DSA_VERIFY 134
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#define ENGINE_F_CSWIFT_FINISH 100
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#define ENGINE_F_CSWIFT_INIT 101
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#define ENGINE_F_CSWIFT_MOD_EXP 102
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#define ENGINE_F_CSWIFT_MOD_EXP_CRT 103
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#define ENGINE_F_CSWIFT_RSA_MOD_EXP 104
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#define ENGINE_F_ENGINE_ADD 105
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#define ENGINE_F_ENGINE_BY_ID 106
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#define ENGINE_F_ENGINE_CTRL 142
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#define ENGINE_F_ENGINE_FINISH 107
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#define ENGINE_F_ENGINE_FREE 108
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#define ENGINE_F_ENGINE_GET_BN_MOD_EXP 109
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#define ENGINE_F_ENGINE_GET_BN_MOD_EXP_CRT 110
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#define ENGINE_F_ENGINE_GET_CTRL_FUNCTION 144
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#define ENGINE_F_ENGINE_GET_DH 111
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#define ENGINE_F_ENGINE_GET_DSA 112
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#define ENGINE_F_ENGINE_GET_FINISH_FUNCTION 145
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#define ENGINE_F_ENGINE_GET_ID 113
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#define ENGINE_F_ENGINE_GET_INIT_FUNCTION 146
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#define ENGINE_F_ENGINE_GET_NAME 114
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#define ENGINE_F_ENGINE_GET_NEXT 115
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#define ENGINE_F_ENGINE_GET_PREV 116
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#define ENGINE_F_ENGINE_GET_RAND 117
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#define ENGINE_F_ENGINE_GET_RSA 118
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#define ENGINE_F_ENGINE_INIT 119
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#define ENGINE_F_ENGINE_LIST_ADD 120
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#define ENGINE_F_ENGINE_LIST_REMOVE 121
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#define ENGINE_F_ENGINE_LOAD_PRIVATE_KEY 150
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#define ENGINE_F_ENGINE_LOAD_PUBLIC_KEY 151
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#define ENGINE_F_ENGINE_NEW 122
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#define ENGINE_F_ENGINE_REMOVE 123
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#define ENGINE_F_ENGINE_SET_BN_MOD_EXP 124
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#define ENGINE_F_ENGINE_SET_BN_MOD_EXP_CRT 125
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#define ENGINE_F_ENGINE_SET_CTRL_FUNCTION 147
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#define ENGINE_F_ENGINE_SET_DEFAULT_TYPE 126
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#define ENGINE_F_ENGINE_SET_DH 127
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#define ENGINE_F_ENGINE_SET_DSA 128
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#define ENGINE_F_ENGINE_SET_FINISH_FUNCTION 148
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#define ENGINE_F_ENGINE_SET_ID 129
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#define ENGINE_F_ENGINE_SET_INIT_FUNCTION 149
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#define ENGINE_F_ENGINE_SET_NAME 130
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#define ENGINE_F_ENGINE_SET_RAND 131
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#define ENGINE_F_ENGINE_SET_RSA 132
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#define ENGINE_F_ENGINE_UNLOAD_KEY 152
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#define ENGINE_F_HWCRHK_CTRL 143
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#define ENGINE_F_HWCRHK_FINISH 135
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#define ENGINE_F_HWCRHK_GET_PASS 155
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#define ENGINE_F_HWCRHK_INIT 136
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#define ENGINE_F_HWCRHK_LOAD_PRIVKEY 153
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#define ENGINE_F_HWCRHK_LOAD_PUBKEY 154
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#define ENGINE_F_HWCRHK_MOD_EXP 137
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#define ENGINE_F_HWCRHK_MOD_EXP_CRT 138
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#define ENGINE_F_HWCRHK_RAND_BYTES 139
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#define ENGINE_F_HWCRHK_RSA_MOD_EXP 140
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#define ENGINE_F_LOG_MESSAGE 141
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#define ENGINE_F_NURON_FINISH 157
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#define ENGINE_F_NURON_INIT 156
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#define ENGINE_F_NURON_MOD_EXP 158
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/* Reason codes. */
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#define ENGINE_R_ALREADY_LOADED 100
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#define ENGINE_R_BIO_WAS_FREED 121
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#define ENGINE_R_BN_CTX_FULL 101
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#define ENGINE_R_BN_EXPAND_FAIL 102
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#define ENGINE_R_CHIL_ERROR 123
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#define ENGINE_R_CONFLICTING_ENGINE_ID 103
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#define ENGINE_R_CTRL_COMMAND_NOT_IMPLEMENTED 119
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#define ENGINE_R_DSO_FAILURE 104
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#define ENGINE_R_DSO_FUNCTION_NOT_FOUND 131
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#define ENGINE_R_DSO_NOT_FOUND 132
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#define ENGINE_R_ENGINE_IS_NOT_IN_LIST 105
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#define ENGINE_R_FAILED_LOADING_PRIVATE_KEY 128
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#define ENGINE_R_FAILED_LOADING_PUBLIC_KEY 129
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#define ENGINE_R_FINISH_FAILED 106
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#define ENGINE_R_GET_HANDLE_FAILED 107
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#define ENGINE_R_ID_OR_NAME_MISSING 108
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#define ENGINE_R_INIT_FAILED 109
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#define ENGINE_R_INTERNAL_LIST_ERROR 110
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#define ENGINE_R_MISSING_KEY_COMPONENTS 111
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#define ENGINE_R_NOT_INITIALISED 117
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#define ENGINE_R_NOT_LOADED 112
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#define ENGINE_R_NO_CALLBACK 127
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#define ENGINE_R_NO_CONTROL_FUNCTION 120
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#define ENGINE_R_NO_KEY 124
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#define ENGINE_R_NO_LOAD_FUNCTION 125
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#define ENGINE_R_NO_REFERENCE 130
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#define ENGINE_R_NO_SUCH_ENGINE 116
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#define ENGINE_R_NO_UNLOAD_FUNCTION 126
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#define ENGINE_R_PROVIDE_PARAMETERS 113
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#define ENGINE_R_REQUEST_FAILED 114
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#define ENGINE_R_REQUEST_FALLBACK 118
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#define ENGINE_R_SIZE_TOO_LARGE_OR_TOO_SMALL 122
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#define ENGINE_R_UNIT_FAILURE 115
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#ifdef __cplusplus
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}
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#endif
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#endif
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