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authorBob Beck <beck@cvs.openbsd.org>2000-12-15 02:58:47 +0000
committerBob Beck <beck@cvs.openbsd.org>2000-12-15 02:58:47 +0000
commit9865f3ff77de9cfef0c5c8b0470daf6faa2f14af (patch)
tree6ef6db7e6efeadf01e9b710a8328541a09bda4a5 /lib/libcrypto/engine/engine.h
parent24eef031f7cd4e60929330fe787d411d96411dd4 (diff)
import openssl-0.9.7-beta1
Diffstat (limited to 'lib/libcrypto/engine/engine.h')
-rw-r--r--lib/libcrypto/engine/engine.h398
1 files changed, 398 insertions, 0 deletions
diff --git a/lib/libcrypto/engine/engine.h b/lib/libcrypto/engine/engine.h
new file mode 100644
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+++ b/lib/libcrypto/engine/engine.h
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+/* openssl/engine.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_H
+#define HEADER_ENGINE_H
+
+#include <openssl/bn.h>
+#include <openssl/rsa.h>
+#include <openssl/dsa.h>
+#include <openssl/dh.h>
+#include <openssl/rand.h>
+#include <openssl/evp.h>
+#include <openssl/symhacks.h>
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+/* These flags are used to control combinations of algorithm (methods)
+ * by bitwise "OR"ing. */
+#define ENGINE_METHOD_RSA (unsigned int)0x0001
+#define ENGINE_METHOD_DSA (unsigned int)0x0002
+#define ENGINE_METHOD_DH (unsigned int)0x0004
+#define ENGINE_METHOD_RAND (unsigned int)0x0008
+#define ENGINE_METHOD_BN_MOD_EXP (unsigned int)0x0010
+#define ENGINE_METHOD_BN_MOD_EXP_CRT (unsigned int)0x0020
+/* Obvious all-or-nothing cases. */
+#define ENGINE_METHOD_ALL (unsigned int)0xFFFF
+#define ENGINE_METHOD_NONE (unsigned int)0x0000
+
+/* These flags are used to tell the ctrl function what should be done.
+ * All command numbers are shared between all engines, even if some don't
+ * make sense to some engines. In such a case, they do nothing but return
+ * the error ENGINE_R_CTRL_COMMAND_NOT_IMPLEMENTED. */
+#define ENGINE_CTRL_SET_LOGSTREAM 1
+#define ENGINE_CTRL_SET_PASSWORD_CALLBACK 2
+/* Flags specific to the nCipher "chil" engine */
+#define ENGINE_CTRL_CHIL_SET_FORKCHECK 100
+ /* Depending on the value of the (long)i argument, this sets or
+ * unsets the SimpleForkCheck flag in the CHIL API to enable or
+ * disable checking and workarounds for applications that fork().
+ */
+#define ENGINE_CTRL_CHIL_NO_LOCKING 101
+ /* This prevents the initialisation function from providing mutex
+ * callbacks to the nCipher library. */
+
+/* As we're missing a BIGNUM_METHOD, we need a couple of locally
+ * defined function types that engines can implement. */
+
+#ifndef HEADER_ENGINE_INT_H
+/* mod_exp operation, calculates; r = a ^ p mod m
+ * NB: ctx can be NULL, but if supplied, the implementation may use
+ * it if it wishes. */
+typedef int (*BN_MOD_EXP)(BIGNUM *r, BIGNUM *a, const BIGNUM *p,
+ const BIGNUM *m, BN_CTX *ctx);
+
+/* private key operation for RSA, provided seperately in case other
+ * RSA implementations wish to use it. */
+typedef int (*BN_MOD_EXP_CRT)(BIGNUM *r, BIGNUM *a, const BIGNUM *p,
+ const BIGNUM *q, const BIGNUM *dmp1, const BIGNUM *dmq1,
+ const BIGNUM *iqmp, BN_CTX *ctx);
+
+/* Generic function pointer */
+typedef void (*ENGINE_GEN_FUNC_PTR)();
+/* Generic function pointer taking no arguments */
+typedef void (*ENGINE_GEN_INT_FUNC_PTR)(void);
+/* Specific control function pointer */
+typedef int (*ENGINE_CTRL_FUNC_PTR)(int cmd, long i, void *p, void (*f)());
+
+/* The list of "engine" types is a static array of (const ENGINE*)
+ * pointers (not dynamic because static is fine for now and we otherwise
+ * have to hook an appropriate load/unload function in to initialise and
+ * cleanup). */
+typedef struct engine_st ENGINE;
+#endif
+
+/* STRUCTURE functions ... all of these functions deal with pointers to
+ * ENGINE structures where the pointers have a "structural reference".
+ * This means that their reference is to allow access to the structure
+ * but it does not imply that the structure is functional. To simply
+ * increment or decrement the structural reference count, use ENGINE_new
+ * and ENGINE_free. NB: This is not required when iterating using
+ * ENGINE_get_next as it will automatically decrement the structural
+ * reference count of the "current" ENGINE and increment the structural
+ * reference count of the ENGINE it returns (unless it is NULL). */
+
+/* Get the first/last "ENGINE" type available. */
+ENGINE *ENGINE_get_first(void);
+ENGINE *ENGINE_get_last(void);
+/* Iterate to the next/previous "ENGINE" type (NULL = end of the list). */
+ENGINE *ENGINE_get_next(ENGINE *e);
+ENGINE *ENGINE_get_prev(ENGINE *e);
+/* Add another "ENGINE" type into the array. */
+int ENGINE_add(ENGINE *e);
+/* Remove an existing "ENGINE" type from the array. */
+int ENGINE_remove(ENGINE *e);
+/* Retrieve an engine from the list by its unique "id" value. */
+ENGINE *ENGINE_by_id(const char *id);
+
+/* These functions are useful for manufacturing new ENGINE
+ * structures. They don't address reference counting at all -
+ * one uses them to populate an ENGINE structure with personalised
+ * implementations of things prior to using it directly or adding
+ * it to the builtin ENGINE list in OpenSSL. These are also here
+ * so that the ENGINE structure doesn't have to be exposed and
+ * break binary compatibility!
+ *
+ * NB: I'm changing ENGINE_new to force the ENGINE structure to
+ * be allocated from within OpenSSL. See the comment for
+ * ENGINE_get_struct_size().
+ */
+#if 0
+ENGINE *ENGINE_new(ENGINE *e);
+#else
+ENGINE *ENGINE_new(void);
+#endif
+int ENGINE_free(ENGINE *e);
+int ENGINE_set_id(ENGINE *e, const char *id);
+int ENGINE_set_name(ENGINE *e, const char *name);
+int ENGINE_set_RSA(ENGINE *e, RSA_METHOD *rsa_meth);
+int ENGINE_set_DSA(ENGINE *e, DSA_METHOD *dsa_meth);
+int ENGINE_set_DH(ENGINE *e, DH_METHOD *dh_meth);
+int ENGINE_set_RAND(ENGINE *e, RAND_METHOD *rand_meth);
+int ENGINE_set_BN_mod_exp(ENGINE *e, BN_MOD_EXP bn_mod_exp);
+int ENGINE_set_BN_mod_exp_crt(ENGINE *e, BN_MOD_EXP_CRT bn_mod_exp_crt);
+int ENGINE_set_init_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR init_f);
+int ENGINE_set_finish_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR finish_f);
+int ENGINE_set_ctrl_function(ENGINE *e, ENGINE_CTRL_FUNC_PTR ctrl_f);
+
+/* These return values from within the ENGINE structure. These can
+ * be useful with functional references as well as structural
+ * references - it depends which you obtained. Using the result
+ * for functional purposes if you only obtained a structural
+ * reference may be problematic! */
+const char *ENGINE_get_id(ENGINE *e);
+const char *ENGINE_get_name(ENGINE *e);
+RSA_METHOD *ENGINE_get_RSA(ENGINE *e);
+DSA_METHOD *ENGINE_get_DSA(ENGINE *e);
+DH_METHOD *ENGINE_get_DH(ENGINE *e);
+RAND_METHOD *ENGINE_get_RAND(ENGINE *e);
+BN_MOD_EXP ENGINE_get_BN_mod_exp(ENGINE *e);
+BN_MOD_EXP_CRT ENGINE_get_BN_mod_exp_crt(ENGINE *e);
+ENGINE_GEN_INT_FUNC_PTR ENGINE_get_init_function(ENGINE *e);
+ENGINE_GEN_INT_FUNC_PTR ENGINE_get_finish_function(ENGINE *e);
+ENGINE_CTRL_FUNC_PTR ENGINE_get_ctrl_function(ENGINE *e);
+
+/* ENGINE_new is normally passed a NULL in the first parameter because
+ * the calling code doesn't have access to the definition of the ENGINE
+ * structure (for good reason). However, if the caller wishes to use
+ * its own memory allocation or use a static array, the following call
+ * should be used to check the amount of memory the ENGINE structure
+ * will occupy. This will make the code more future-proof.
+ *
+ * NB: I'm "#if 0"-ing this out because it's better to force the use of
+ * internally allocated memory. See similar change in ENGINE_new().
+ */
+#if 0
+int ENGINE_get_struct_size(void);
+#endif
+
+/* FUNCTIONAL functions. These functions deal with ENGINE structures
+ * that have (or will) be initialised for use. Broadly speaking, the
+ * structural functions are useful for iterating the list of available
+ * engine types, creating new engine types, and other "list" operations.
+ * These functions actually deal with ENGINEs that are to be used. As
+ * such these functions can fail (if applicable) when particular
+ * engines are unavailable - eg. if a hardware accelerator is not
+ * attached or not functioning correctly. Each ENGINE has 2 reference
+ * counts; structural and functional. Every time a functional reference
+ * is obtained or released, a corresponding structural reference is
+ * automatically obtained or released too. */
+
+/* Initialise a engine type for use (or up its reference count if it's
+ * already in use). This will fail if the engine is not currently
+ * operational and cannot initialise. */
+int ENGINE_init(ENGINE *e);
+/* Free a functional reference to a engine type. This does not require
+ * a corresponding call to ENGINE_free as it also releases a structural
+ * reference. */
+int ENGINE_finish(ENGINE *e);
+/* Send control parametrised commands to the engine. The possibilities
+ * to send down an integer, a pointer to data or a function pointer are
+ * provided. Any of the parameters may or may not be NULL, depending
+ * on the command number */
+/* WARNING: This is currently experimental and may change radically! */
+int ENGINE_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)());
+
+/* The following functions handle keys that are stored in some secondary
+ * location, handled by the engine. The storage may be on a card or
+ * whatever. */
+EVP_PKEY *ENGINE_load_private_key(ENGINE *e, const char *key_id,
+ const char *passphrase);
+EVP_PKEY *ENGINE_load_public_key(ENGINE *e, const char *key_id,
+ const char *passphrase);
+
+/* This returns a pointer for the current ENGINE structure that
+ * is (by default) performing any RSA operations. The value returned
+ * is an incremented reference, so it should be free'd (ENGINE_finish)
+ * before it is discarded. */
+ENGINE *ENGINE_get_default_RSA(void);
+/* Same for the other "methods" */
+ENGINE *ENGINE_get_default_DSA(void);
+ENGINE *ENGINE_get_default_DH(void);
+ENGINE *ENGINE_get_default_RAND(void);
+ENGINE *ENGINE_get_default_BN_mod_exp(void);
+ENGINE *ENGINE_get_default_BN_mod_exp_crt(void);
+
+/* This sets a new default ENGINE structure for performing RSA
+ * operations. If the result is non-zero (success) then the ENGINE
+ * structure will have had its reference count up'd so the caller
+ * should still free their own reference 'e'. */
+int ENGINE_set_default_RSA(ENGINE *e);
+/* Same for the other "methods" */
+int ENGINE_set_default_DSA(ENGINE *e);
+int ENGINE_set_default_DH(ENGINE *e);
+int ENGINE_set_default_RAND(ENGINE *e);
+int ENGINE_set_default_BN_mod_exp(ENGINE *e);
+int ENGINE_set_default_BN_mod_exp_crt(ENGINE *e);
+
+/* The combination "set" - the flags are bitwise "OR"d from the
+ * ENGINE_METHOD_*** defines above. */
+int ENGINE_set_default(ENGINE *e, unsigned int flags);
+
+/* Obligatory error function. */
+void ERR_load_ENGINE_strings(void);
+
+/*
+ * Error codes for all engine functions. NB: We use "generic"
+ * function names instead of per-implementation ones because this
+ * levels the playing field for externally implemented bootstrapped
+ * support code. As the filename and line number is included, it's
+ * more important to indicate the type of function, so that
+ * bootstrapped code (that can't easily add its own errors in) can
+ * use the same error codes too.
+ */
+
+/* BEGIN ERROR CODES */
+/* The following lines are auto generated by the script mkerr.pl. Any changes
+ * made after this point may be overwritten when the script is next run.
+ */
+
+/* Error codes for the ENGINE functions. */
+
+/* Function codes. */
+#define ENGINE_F_ATALLA_FINISH 135
+#define ENGINE_F_ATALLA_INIT 136
+#define ENGINE_F_ATALLA_MOD_EXP 137
+#define ENGINE_F_ATALLA_RSA_MOD_EXP 138
+#define ENGINE_F_CSWIFT_DSA_SIGN 133
+#define ENGINE_F_CSWIFT_DSA_VERIFY 134
+#define ENGINE_F_CSWIFT_FINISH 100
+#define ENGINE_F_CSWIFT_INIT 101
+#define ENGINE_F_CSWIFT_MOD_EXP 102
+#define ENGINE_F_CSWIFT_MOD_EXP_CRT 103
+#define ENGINE_F_CSWIFT_RSA_MOD_EXP 104
+#define ENGINE_F_ENGINE_ADD 105
+#define ENGINE_F_ENGINE_BY_ID 106
+#define ENGINE_F_ENGINE_CTRL 142
+#define ENGINE_F_ENGINE_FINISH 107
+#define ENGINE_F_ENGINE_FREE 108
+#define ENGINE_F_ENGINE_GET_BN_MOD_EXP 109
+#define ENGINE_F_ENGINE_GET_BN_MOD_EXP_CRT 110
+#define ENGINE_F_ENGINE_GET_CTRL_FUNCTION 144
+#define ENGINE_F_ENGINE_GET_DH 111
+#define ENGINE_F_ENGINE_GET_DSA 112
+#define ENGINE_F_ENGINE_GET_FINISH_FUNCTION 145
+#define ENGINE_F_ENGINE_GET_ID 113
+#define ENGINE_F_ENGINE_GET_INIT_FUNCTION 146
+#define ENGINE_F_ENGINE_GET_NAME 114
+#define ENGINE_F_ENGINE_GET_NEXT 115
+#define ENGINE_F_ENGINE_GET_PREV 116
+#define ENGINE_F_ENGINE_GET_RAND 117
+#define ENGINE_F_ENGINE_GET_RSA 118
+#define ENGINE_F_ENGINE_INIT 119
+#define ENGINE_F_ENGINE_LIST_ADD 120
+#define ENGINE_F_ENGINE_LIST_REMOVE 121
+#define ENGINE_F_ENGINE_LOAD_PRIVATE_KEY 150
+#define ENGINE_F_ENGINE_LOAD_PUBLIC_KEY 151
+#define ENGINE_F_ENGINE_NEW 122
+#define ENGINE_F_ENGINE_REMOVE 123
+#define ENGINE_F_ENGINE_SET_BN_MOD_EXP 124
+#define ENGINE_F_ENGINE_SET_BN_MOD_EXP_CRT 125
+#define ENGINE_F_ENGINE_SET_CTRL_FUNCTION 147
+#define ENGINE_F_ENGINE_SET_DEFAULT_TYPE 126
+#define ENGINE_F_ENGINE_SET_DH 127
+#define ENGINE_F_ENGINE_SET_DSA 128
+#define ENGINE_F_ENGINE_SET_FINISH_FUNCTION 148
+#define ENGINE_F_ENGINE_SET_ID 129
+#define ENGINE_F_ENGINE_SET_INIT_FUNCTION 149
+#define ENGINE_F_ENGINE_SET_NAME 130
+#define ENGINE_F_ENGINE_SET_RAND 131
+#define ENGINE_F_ENGINE_SET_RSA 132
+#define ENGINE_F_ENGINE_UNLOAD_KEY 152
+#define ENGINE_F_HWCRHK_CTRL 143
+#define ENGINE_F_HWCRHK_FINISH 135
+#define ENGINE_F_HWCRHK_GET_PASS 155
+#define ENGINE_F_HWCRHK_INIT 136
+#define ENGINE_F_HWCRHK_LOAD_PRIVKEY 153
+#define ENGINE_F_HWCRHK_LOAD_PUBKEY 154
+#define ENGINE_F_HWCRHK_MOD_EXP 137
+#define ENGINE_F_HWCRHK_MOD_EXP_CRT 138
+#define ENGINE_F_HWCRHK_RAND_BYTES 139
+#define ENGINE_F_HWCRHK_RSA_MOD_EXP 140
+#define ENGINE_F_LOG_MESSAGE 141
+
+/* Reason codes. */
+#define ENGINE_R_ALREADY_LOADED 100
+#define ENGINE_R_BIO_WAS_FREED 121
+#define ENGINE_R_BN_CTX_FULL 101
+#define ENGINE_R_BN_EXPAND_FAIL 102
+#define ENGINE_R_CHIL_ERROR 123
+#define ENGINE_R_CONFLICTING_ENGINE_ID 103
+#define ENGINE_R_CTRL_COMMAND_NOT_IMPLEMENTED 119
+#define ENGINE_R_DSO_FAILURE 104
+#define ENGINE_R_ENGINE_IS_NOT_IN_LIST 105
+#define ENGINE_R_FAILED_LOADING_PRIVATE_KEY 128
+#define ENGINE_R_FAILED_LOADING_PUBLIC_KEY 129
+#define ENGINE_R_FINISH_FAILED 106
+#define ENGINE_R_GET_HANDLE_FAILED 107
+#define ENGINE_R_ID_OR_NAME_MISSING 108
+#define ENGINE_R_INIT_FAILED 109
+#define ENGINE_R_INTERNAL_LIST_ERROR 110
+#define ENGINE_R_MISSING_KEY_COMPONENTS 111
+#define ENGINE_R_NOT_INITIALISED 117
+#define ENGINE_R_NOT_LOADED 112
+#define ENGINE_R_NO_CALLBACK 127
+#define ENGINE_R_NO_CONTROL_FUNCTION 120
+#define ENGINE_R_NO_KEY 124
+#define ENGINE_R_NO_LOAD_FUNCTION 125
+#define ENGINE_R_NO_REFERENCE 130
+#define ENGINE_R_NO_SUCH_ENGINE 116
+#define ENGINE_R_NO_UNLOAD_FUNCTION 126
+#define ENGINE_R_PROVIDE_PARAMETERS 113
+#define ENGINE_R_REQUEST_FAILED 114
+#define ENGINE_R_REQUEST_FALLBACK 118
+#define ENGINE_R_SIZE_TOO_LARGE_OR_TOO_SMALL 122
+#define ENGINE_R_UNIT_FAILURE 115
+
+#ifdef __cplusplus
+}
+#endif
+#endif
+