1 /* openssl/engine.h */
   2 /* Written by Geoff Thorpe (geoff@geoffthorpe.net) for the OpenSSL
   3  * project 2000.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 1999-2004 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  * Copyright 2002 Sun Microsystems, Inc. ALL RIGHTS RESERVED.
  60  * ECDH support in OpenSSL originally developed by
  61  * SUN MICROSYSTEMS, INC., and contributed to the OpenSSL project.
  62  */
  63 
  64 #ifndef HEADER_ENGINE_H
  65 #define HEADER_ENGINE_H
  66 
  67 #include <openssl/opensslconf.h>
  68 
  69 #ifdef OPENSSL_NO_ENGINE
  70 #error ENGINE is disabled.
  71 #endif
  72 
  73 #ifndef OPENSSL_NO_DEPRECATED
  74 #include <openssl/bn.h>
  75 #ifndef OPENSSL_NO_RSA
  76 #include <openssl/rsa.h>
  77 #endif
  78 #ifndef OPENSSL_NO_DSA
  79 #include <openssl/dsa.h>
  80 #endif
  81 #ifndef OPENSSL_NO_DH
  82 #include <openssl/dh.h>
  83 #endif
  84 #ifndef OPENSSL_NO_ECDH
  85 #include <openssl/ecdh.h>
  86 #endif
  87 #ifndef OPENSSL_NO_ECDSA
  88 #include <openssl/ecdsa.h>
  89 #endif
  90 #include <openssl/rand.h>
  91 #include <openssl/ui.h>
  92 #include <openssl/err.h>
  93 #endif
  94 
  95 #include <openssl/ossl_typ.h>
  96 #include <openssl/symhacks.h>
  97 
  98 #include <openssl/x509.h>
  99 
 100 #ifdef  __cplusplus
 101 extern "C" {
 102 #endif
 103 
 104 /* These flags are used to control combinations of algorithm (methods)
 105  * by bitwise "OR"ing. */
 106 #define ENGINE_METHOD_RSA               (unsigned int)0x0001
 107 #define ENGINE_METHOD_DSA               (unsigned int)0x0002
 108 #define ENGINE_METHOD_DH                (unsigned int)0x0004
 109 #define ENGINE_METHOD_RAND              (unsigned int)0x0008
 110 #define ENGINE_METHOD_ECDH              (unsigned int)0x0010
 111 #define ENGINE_METHOD_ECDSA             (unsigned int)0x0020
 112 #define ENGINE_METHOD_CIPHERS           (unsigned int)0x0040
 113 #define ENGINE_METHOD_DIGESTS           (unsigned int)0x0080
 114 #define ENGINE_METHOD_STORE             (unsigned int)0x0100
 115 #define ENGINE_METHOD_PKEY_METHS        (unsigned int)0x0200
 116 #define ENGINE_METHOD_PKEY_ASN1_METHS   (unsigned int)0x0400
 117 /* Obvious all-or-nothing cases. */
 118 #define ENGINE_METHOD_ALL               (unsigned int)0xFFFF
 119 #define ENGINE_METHOD_NONE              (unsigned int)0x0000
 120 
 121 /* This(ese) flag(s) controls behaviour of the ENGINE_TABLE mechanism used
 122  * internally to control registration of ENGINE implementations, and can be set
 123  * by ENGINE_set_table_flags(). The "NOINIT" flag prevents attempts to
 124  * initialise registered ENGINEs if they are not already initialised. */
 125 #define ENGINE_TABLE_FLAG_NOINIT        (unsigned int)0x0001
 126 
 127 /* ENGINE flags that can be set by ENGINE_set_flags(). */
 128 /* #define ENGINE_FLAGS_MALLOCED        0x0001 */ /* Not used */
 129 
 130 /* This flag is for ENGINEs that wish to handle the various 'CMD'-related
 131  * control commands on their own. Without this flag, ENGINE_ctrl() handles these
 132  * control commands on behalf of the ENGINE using their "cmd_defns" data. */
 133 #define ENGINE_FLAGS_MANUAL_CMD_CTRL    (int)0x0002
 134 
 135 /* This flag is for ENGINEs who return new duplicate structures when found via
 136  * "ENGINE_by_id()". When an ENGINE must store state (eg. if ENGINE_ctrl()
 137  * commands are called in sequence as part of some stateful process like
 138  * key-generation setup and execution), it can set this flag - then each attempt
 139  * to obtain the ENGINE will result in it being copied into a new structure.
 140  * Normally, ENGINEs don't declare this flag so ENGINE_by_id() just increments
 141  * the existing ENGINE's structural reference count. */
 142 #define ENGINE_FLAGS_BY_ID_COPY         (int)0x0004
 143 
 144 /* This flag if for an ENGINE that does not want its methods registered as
 145  * part of ENGINE_register_all_complete() for example if the methods are
 146  * not usable as default methods.
 147  */
 148 
 149 #define ENGINE_FLAGS_NO_REGISTER_ALL    (int)0x0008
 150 
 151 /* ENGINEs can support their own command types, and these flags are used in
 152  * ENGINE_CTRL_GET_CMD_FLAGS to indicate to the caller what kind of input each
 153  * command expects. Currently only numeric and string input is supported. If a
 154  * control command supports none of the _NUMERIC, _STRING, or _NO_INPUT options,
 155  * then it is regarded as an "internal" control command - and not for use in
 156  * config setting situations. As such, they're not available to the
 157  * ENGINE_ctrl_cmd_string() function, only raw ENGINE_ctrl() access. Changes to
 158  * this list of 'command types' should be reflected carefully in
 159  * ENGINE_cmd_is_executable() and ENGINE_ctrl_cmd_string(). */
 160 
 161 /* accepts a 'long' input value (3rd parameter to ENGINE_ctrl) */
 162 #define ENGINE_CMD_FLAG_NUMERIC         (unsigned int)0x0001
 163 /* accepts string input (cast from 'void*' to 'const char *', 4th parameter to
 164  * ENGINE_ctrl) */
 165 #define ENGINE_CMD_FLAG_STRING          (unsigned int)0x0002
 166 /* Indicates that the control command takes *no* input. Ie. the control command
 167  * is unparameterised. */
 168 #define ENGINE_CMD_FLAG_NO_INPUT        (unsigned int)0x0004
 169 /* Indicates that the control command is internal. This control command won't
 170  * be shown in any output, and is only usable through the ENGINE_ctrl_cmd()
 171  * function. */
 172 #define ENGINE_CMD_FLAG_INTERNAL        (unsigned int)0x0008
 173 
 174 /* NB: These 3 control commands are deprecated and should not be used. ENGINEs
 175  * relying on these commands should compile conditional support for
 176  * compatibility (eg. if these symbols are defined) but should also migrate the
 177  * same functionality to their own ENGINE-specific control functions that can be
 178  * "discovered" by calling applications. The fact these control commands
 179  * wouldn't be "executable" (ie. usable by text-based config) doesn't change the
 180  * fact that application code can find and use them without requiring per-ENGINE
 181  * hacking. */
 182 
 183 /* These flags are used to tell the ctrl function what should be done.
 184  * All command numbers are shared between all engines, even if some don't
 185  * make sense to some engines.  In such a case, they do nothing but return
 186  * the error ENGINE_R_CTRL_COMMAND_NOT_IMPLEMENTED. */
 187 #define ENGINE_CTRL_SET_LOGSTREAM               1
 188 #define ENGINE_CTRL_SET_PASSWORD_CALLBACK       2
 189 #define ENGINE_CTRL_HUP                         3 /* Close and reinitialise any
 190                                                      handles/connections etc. */
 191 #define ENGINE_CTRL_SET_USER_INTERFACE          4 /* Alternative to callback */
 192 #define ENGINE_CTRL_SET_CALLBACK_DATA           5 /* User-specific data, used
 193                                                      when calling the password
 194                                                      callback and the user
 195                                                      interface */
 196 #define ENGINE_CTRL_LOAD_CONFIGURATION          6 /* Load a configuration, given
 197                                                      a string that represents a
 198                                                      file name or so */
 199 #define ENGINE_CTRL_LOAD_SECTION                7 /* Load data from a given
 200                                                      section in the already loaded
 201                                                      configuration */
 202 
 203 /* These control commands allow an application to deal with an arbitrary engine
 204  * in a dynamic way. Warn: Negative return values indicate errors FOR THESE
 205  * COMMANDS because zero is used to indicate 'end-of-list'. Other commands,
 206  * including ENGINE-specific command types, return zero for an error.
 207  *
 208  * An ENGINE can choose to implement these ctrl functions, and can internally
 209  * manage things however it chooses - it does so by setting the
 210  * ENGINE_FLAGS_MANUAL_CMD_CTRL flag (using ENGINE_set_flags()). Otherwise the
 211  * ENGINE_ctrl() code handles this on the ENGINE's behalf using the cmd_defns
 212  * data (set using ENGINE_set_cmd_defns()). This means an ENGINE's ctrl()
 213  * handler need only implement its own commands - the above "meta" commands will
 214  * be taken care of. */
 215 
 216 /* Returns non-zero if the supplied ENGINE has a ctrl() handler. If "not", then
 217  * all the remaining control commands will return failure, so it is worth
 218  * checking this first if the caller is trying to "discover" the engine's
 219  * capabilities and doesn't want errors generated unnecessarily. */
 220 #define ENGINE_CTRL_HAS_CTRL_FUNCTION           10
 221 /* Returns a positive command number for the first command supported by the
 222  * engine. Returns zero if no ctrl commands are supported. */
 223 #define ENGINE_CTRL_GET_FIRST_CMD_TYPE          11
 224 /* The 'long' argument specifies a command implemented by the engine, and the
 225  * return value is the next command supported, or zero if there are no more. */
 226 #define ENGINE_CTRL_GET_NEXT_CMD_TYPE           12
 227 /* The 'void*' argument is a command name (cast from 'const char *'), and the
 228  * return value is the command that corresponds to it. */
 229 #define ENGINE_CTRL_GET_CMD_FROM_NAME           13
 230 /* The next two allow a command to be converted into its corresponding string
 231  * form. In each case, the 'long' argument supplies the command. In the NAME_LEN
 232  * case, the return value is the length of the command name (not counting a
 233  * trailing EOL). In the NAME case, the 'void*' argument must be a string buffer
 234  * large enough, and it will be populated with the name of the command (WITH a
 235  * trailing EOL). */
 236 #define ENGINE_CTRL_GET_NAME_LEN_FROM_CMD       14
 237 #define ENGINE_CTRL_GET_NAME_FROM_CMD           15
 238 /* The next two are similar but give a "short description" of a command. */
 239 #define ENGINE_CTRL_GET_DESC_LEN_FROM_CMD       16
 240 #define ENGINE_CTRL_GET_DESC_FROM_CMD           17
 241 /* With this command, the return value is the OR'd combination of
 242  * ENGINE_CMD_FLAG_*** values that indicate what kind of input a given
 243  * engine-specific ctrl command expects. */
 244 #define ENGINE_CTRL_GET_CMD_FLAGS               18
 245 
 246 /* ENGINE implementations should start the numbering of their own control
 247  * commands from this value. (ie. ENGINE_CMD_BASE, ENGINE_CMD_BASE + 1, etc). */
 248 #define ENGINE_CMD_BASE                         200
 249 
 250 /* NB: These 2 nCipher "chil" control commands are deprecated, and their
 251  * functionality is now available through ENGINE-specific control commands
 252  * (exposed through the above-mentioned 'CMD'-handling). Code using these 2
 253  * commands should be migrated to the more general command handling before these
 254  * are removed. */
 255 
 256 /* Flags specific to the nCipher "chil" engine */
 257 #define ENGINE_CTRL_CHIL_SET_FORKCHECK          100
 258         /* Depending on the value of the (long)i argument, this sets or
 259          * unsets the SimpleForkCheck flag in the CHIL API to enable or
 260          * disable checking and workarounds for applications that fork().
 261          */
 262 #define ENGINE_CTRL_CHIL_NO_LOCKING             101
 263         /* This prevents the initialisation function from providing mutex
 264          * callbacks to the nCipher library. */
 265 
 266 /* If an ENGINE supports its own specific control commands and wishes the
 267  * framework to handle the above 'ENGINE_CMD_***'-manipulation commands on its
 268  * behalf, it should supply a null-terminated array of ENGINE_CMD_DEFN entries
 269  * to ENGINE_set_cmd_defns(). It should also implement a ctrl() handler that
 270  * supports the stated commands (ie. the "cmd_num" entries as described by the
 271  * array). NB: The array must be ordered in increasing order of cmd_num.
 272  * "null-terminated" means that the last ENGINE_CMD_DEFN element has cmd_num set
 273  * to zero and/or cmd_name set to NULL. */
 274 typedef struct ENGINE_CMD_DEFN_st
 275         {
 276         unsigned int cmd_num; /* The command number */
 277         const char *cmd_name; /* The command name itself */
 278         const char *cmd_desc; /* A short description of the command */
 279         unsigned int cmd_flags; /* The input the command expects */
 280         } ENGINE_CMD_DEFN;
 281 
 282 /* Generic function pointer */
 283 typedef int (*ENGINE_GEN_FUNC_PTR)(void);
 284 /* Generic function pointer taking no arguments */
 285 typedef int (*ENGINE_GEN_INT_FUNC_PTR)(ENGINE *);
 286 /* Specific control function pointer */
 287 typedef int (*ENGINE_CTRL_FUNC_PTR)(ENGINE *, int, long, void *, void (*f)(void));
 288 /* Generic load_key function pointer */
 289 typedef EVP_PKEY * (*ENGINE_LOAD_KEY_PTR)(ENGINE *, const char *,
 290         UI_METHOD *ui_method, void *callback_data);
 291 typedef int (*ENGINE_SSL_CLIENT_CERT_PTR)(ENGINE *, SSL *ssl,
 292         STACK_OF(X509_NAME) *ca_dn, X509 **pcert, EVP_PKEY **pkey,
 293         STACK_OF(X509) **pother, UI_METHOD *ui_method, void *callback_data);
 294 /* These callback types are for an ENGINE's handler for cipher and digest logic.
 295  * These handlers have these prototypes;
 296  *   int foo(ENGINE *e, const EVP_CIPHER **cipher, const int **nids, int nid);
 297  *   int foo(ENGINE *e, const EVP_MD **digest, const int **nids, int nid);
 298  * Looking at how to implement these handlers in the case of cipher support, if
 299  * the framework wants the EVP_CIPHER for 'nid', it will call;
 300  *   foo(e, &p_evp_cipher, NULL, nid);    (return zero for failure)
 301  * If the framework wants a list of supported 'nid's, it will call;
 302  *   foo(e, NULL, &p_nids, 0); (returns number of 'nids' or -1 for error)
 303  */
 304 /* Returns to a pointer to the array of supported cipher 'nid's. If the second
 305  * parameter is non-NULL it is set to the size of the returned array. */
 306 typedef int (*ENGINE_CIPHERS_PTR)(ENGINE *, const EVP_CIPHER **, const int **, int);
 307 typedef int (*ENGINE_DIGESTS_PTR)(ENGINE *, const EVP_MD **, const int **, int);
 308 typedef int (*ENGINE_PKEY_METHS_PTR)(ENGINE *, EVP_PKEY_METHOD **, const int **, int);
 309 typedef int (*ENGINE_PKEY_ASN1_METHS_PTR)(ENGINE *, EVP_PKEY_ASN1_METHOD **, const int **, int);
 310 /* STRUCTURE functions ... all of these functions deal with pointers to ENGINE
 311  * structures where the pointers have a "structural reference". This means that
 312  * their reference is to allowed access to the structure but it does not imply
 313  * that the structure is functional. To simply increment or decrement the
 314  * structural reference count, use ENGINE_by_id and ENGINE_free. NB: This is not
 315  * required when iterating using ENGINE_get_next as it will automatically
 316  * decrement the structural reference count of the "current" ENGINE and
 317  * increment the structural reference count of the ENGINE it returns (unless it
 318  * is NULL). */
 319 
 320 /* Get the first/last "ENGINE" type available. */
 321 ENGINE *ENGINE_get_first(void);
 322 ENGINE *ENGINE_get_last(void);
 323 /* Iterate to the next/previous "ENGINE" type (NULL = end of the list). */
 324 ENGINE *ENGINE_get_next(ENGINE *e);
 325 ENGINE *ENGINE_get_prev(ENGINE *e);
 326 /* Add another "ENGINE" type into the array. */
 327 int ENGINE_add(ENGINE *e);
 328 /* Remove an existing "ENGINE" type from the array. */
 329 int ENGINE_remove(ENGINE *e);
 330 /* Retrieve an engine from the list by its unique "id" value. */
 331 ENGINE *ENGINE_by_id(const char *id);
 332 /* Add all the built-in engines. */
 333 void ENGINE_load_openssl(void);
 334 void ENGINE_load_dynamic(void);
 335 #ifndef OPENSSL_NO_STATIC_ENGINE
 336 void ENGINE_load_4758cca(void);
 337 void ENGINE_load_aep(void);
 338 void ENGINE_load_atalla(void);
 339 void ENGINE_load_chil(void);
 340 void ENGINE_load_cswift(void);
 341 void ENGINE_load_nuron(void);
 342 void ENGINE_load_sureware(void);
 343 void ENGINE_load_ubsec(void);
 344 void ENGINE_load_padlock(void);
 345 void ENGINE_load_capi(void);
 346 #ifndef OPENSSL_NO_GMP
 347 void ENGINE_load_gmp(void);
 348 #endif
 349 #ifndef OPENSSL_NO_GOST
 350 void ENGINE_load_gost(void);
 351 #endif
 352 #endif
 353 void ENGINE_load_cryptodev(void);
 354 void ENGINE_load_rsax(void);
 355 void ENGINE_load_rdrand(void);
 356 void ENGINE_load_builtin_engines(void);
 357 
 358 /* Get and set global flags (ENGINE_TABLE_FLAG_***) for the implementation
 359  * "registry" handling. */
 360 unsigned int ENGINE_get_table_flags(void);
 361 void ENGINE_set_table_flags(unsigned int flags);
 362 
 363 /* Manage registration of ENGINEs per "table". For each type, there are 3
 364  * functions;
 365  *   ENGINE_register_***(e) - registers the implementation from 'e' (if it has one)
 366  *   ENGINE_unregister_***(e) - unregister the implementation from 'e'
 367  *   ENGINE_register_all_***() - call ENGINE_register_***() for each 'e' in the list
 368  * Cleanup is automatically registered from each table when required, so
 369  * ENGINE_cleanup() will reverse any "register" operations. */
 370 
 371 int ENGINE_register_RSA(ENGINE *e);
 372 void ENGINE_unregister_RSA(ENGINE *e);
 373 void ENGINE_register_all_RSA(void);
 374 
 375 int ENGINE_register_DSA(ENGINE *e);
 376 void ENGINE_unregister_DSA(ENGINE *e);
 377 void ENGINE_register_all_DSA(void);
 378 
 379 int ENGINE_register_ECDH(ENGINE *e);
 380 void ENGINE_unregister_ECDH(ENGINE *e);
 381 void ENGINE_register_all_ECDH(void);
 382 
 383 int ENGINE_register_ECDSA(ENGINE *e);
 384 void ENGINE_unregister_ECDSA(ENGINE *e);
 385 void ENGINE_register_all_ECDSA(void);
 386 
 387 int ENGINE_register_DH(ENGINE *e);
 388 void ENGINE_unregister_DH(ENGINE *e);
 389 void ENGINE_register_all_DH(void);
 390 
 391 int ENGINE_register_RAND(ENGINE *e);
 392 void ENGINE_unregister_RAND(ENGINE *e);
 393 void ENGINE_register_all_RAND(void);
 394 
 395 int ENGINE_register_STORE(ENGINE *e);
 396 void ENGINE_unregister_STORE(ENGINE *e);
 397 void ENGINE_register_all_STORE(void);
 398 
 399 int ENGINE_register_ciphers(ENGINE *e);
 400 void ENGINE_unregister_ciphers(ENGINE *e);
 401 void ENGINE_register_all_ciphers(void);
 402 
 403 int ENGINE_register_digests(ENGINE *e);
 404 void ENGINE_unregister_digests(ENGINE *e);
 405 void ENGINE_register_all_digests(void);
 406 
 407 int ENGINE_register_pkey_meths(ENGINE *e);
 408 void ENGINE_unregister_pkey_meths(ENGINE *e);
 409 void ENGINE_register_all_pkey_meths(void);
 410 
 411 int ENGINE_register_pkey_asn1_meths(ENGINE *e);
 412 void ENGINE_unregister_pkey_asn1_meths(ENGINE *e);
 413 void ENGINE_register_all_pkey_asn1_meths(void);
 414 
 415 /* These functions register all support from the above categories. Note, use of
 416  * these functions can result in static linkage of code your application may not
 417  * need. If you only need a subset of functionality, consider using more
 418  * selective initialisation. */
 419 int ENGINE_register_complete(ENGINE *e);
 420 int ENGINE_register_all_complete(void);
 421 
 422 /* Send parametrised control commands to the engine. The possibilities to send
 423  * down an integer, a pointer to data or a function pointer are provided. Any of
 424  * the parameters may or may not be NULL, depending on the command number. In
 425  * actuality, this function only requires a structural (rather than functional)
 426  * reference to an engine, but many control commands may require the engine be
 427  * functional. The caller should be aware of trying commands that require an
 428  * operational ENGINE, and only use functional references in such situations. */
 429 int ENGINE_ctrl(ENGINE *e, int cmd, long i, void *p, void (*f)(void));
 430 
 431 /* This function tests if an ENGINE-specific command is usable as a "setting".
 432  * Eg. in an application's config file that gets processed through
 433  * ENGINE_ctrl_cmd_string(). If this returns zero, it is not available to
 434  * ENGINE_ctrl_cmd_string(), only ENGINE_ctrl(). */
 435 int ENGINE_cmd_is_executable(ENGINE *e, int cmd);
 436 
 437 /* This function works like ENGINE_ctrl() with the exception of taking a
 438  * command name instead of a command number, and can handle optional commands.
 439  * See the comment on ENGINE_ctrl_cmd_string() for an explanation on how to
 440  * use the cmd_name and cmd_optional. */
 441 int ENGINE_ctrl_cmd(ENGINE *e, const char *cmd_name,
 442         long i, void *p, void (*f)(void), int cmd_optional);
 443 
 444 /* This function passes a command-name and argument to an ENGINE. The cmd_name
 445  * is converted to a command number and the control command is called using
 446  * 'arg' as an argument (unless the ENGINE doesn't support such a command, in
 447  * which case no control command is called). The command is checked for input
 448  * flags, and if necessary the argument will be converted to a numeric value. If
 449  * cmd_optional is non-zero, then if the ENGINE doesn't support the given
 450  * cmd_name the return value will be success anyway. This function is intended
 451  * for applications to use so that users (or config files) can supply
 452  * engine-specific config data to the ENGINE at run-time to control behaviour of
 453  * specific engines. As such, it shouldn't be used for calling ENGINE_ctrl()
 454  * functions that return data, deal with binary data, or that are otherwise
 455  * supposed to be used directly through ENGINE_ctrl() in application code. Any
 456  * "return" data from an ENGINE_ctrl() operation in this function will be lost -
 457  * the return value is interpreted as failure if the return value is zero,
 458  * success otherwise, and this function returns a boolean value as a result. In
 459  * other words, vendors of 'ENGINE'-enabled devices should write ENGINE
 460  * implementations with parameterisations that work in this scheme, so that
 461  * compliant ENGINE-based applications can work consistently with the same
 462  * configuration for the same ENGINE-enabled devices, across applications. */
 463 int ENGINE_ctrl_cmd_string(ENGINE *e, const char *cmd_name, const char *arg,
 464                                 int cmd_optional);
 465 
 466 /* These functions are useful for manufacturing new ENGINE structures. They
 467  * don't address reference counting at all - one uses them to populate an ENGINE
 468  * structure with personalised implementations of things prior to using it
 469  * directly or adding it to the builtin ENGINE list in OpenSSL. These are also
 470  * here so that the ENGINE structure doesn't have to be exposed and break binary
 471  * compatibility! */
 472 ENGINE *ENGINE_new(void);
 473 int ENGINE_free(ENGINE *e);
 474 int ENGINE_up_ref(ENGINE *e);
 475 int ENGINE_set_id(ENGINE *e, const char *id);
 476 int ENGINE_set_name(ENGINE *e, const char *name);
 477 int ENGINE_set_RSA(ENGINE *e, const RSA_METHOD *rsa_meth);
 478 int ENGINE_set_DSA(ENGINE *e, const DSA_METHOD *dsa_meth);
 479 int ENGINE_set_ECDH(ENGINE *e, const ECDH_METHOD *ecdh_meth);
 480 int ENGINE_set_ECDSA(ENGINE *e, const ECDSA_METHOD *ecdsa_meth);
 481 int ENGINE_set_DH(ENGINE *e, const DH_METHOD *dh_meth);
 482 int ENGINE_set_RAND(ENGINE *e, const RAND_METHOD *rand_meth);
 483 int ENGINE_set_STORE(ENGINE *e, const STORE_METHOD *store_meth);
 484 int ENGINE_set_destroy_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR destroy_f);
 485 int ENGINE_set_init_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR init_f);
 486 int ENGINE_set_finish_function(ENGINE *e, ENGINE_GEN_INT_FUNC_PTR finish_f);
 487 int ENGINE_set_ctrl_function(ENGINE *e, ENGINE_CTRL_FUNC_PTR ctrl_f);
 488 int ENGINE_set_load_privkey_function(ENGINE *e, ENGINE_LOAD_KEY_PTR loadpriv_f);
 489 int ENGINE_set_load_pubkey_function(ENGINE *e, ENGINE_LOAD_KEY_PTR loadpub_f);
 490 int ENGINE_set_load_ssl_client_cert_function(ENGINE *e,
 491                                 ENGINE_SSL_CLIENT_CERT_PTR loadssl_f);
 492 int ENGINE_set_ciphers(ENGINE *e, ENGINE_CIPHERS_PTR f);
 493 int ENGINE_set_digests(ENGINE *e, ENGINE_DIGESTS_PTR f);
 494 int ENGINE_set_pkey_meths(ENGINE *e, ENGINE_PKEY_METHS_PTR f);
 495 int ENGINE_set_pkey_asn1_meths(ENGINE *e, ENGINE_PKEY_ASN1_METHS_PTR f);
 496 int ENGINE_set_flags(ENGINE *e, int flags);
 497 int ENGINE_set_cmd_defns(ENGINE *e, const ENGINE_CMD_DEFN *defns);
 498 /* These functions allow control over any per-structure ENGINE data. */
 499 int ENGINE_get_ex_new_index(long argl, void *argp, CRYPTO_EX_new *new_func,
 500                 CRYPTO_EX_dup *dup_func, CRYPTO_EX_free *free_func);
 501 int ENGINE_set_ex_data(ENGINE *e, int idx, void *arg);
 502 void *ENGINE_get_ex_data(const ENGINE *e, int idx);
 503 
 504 /* This function cleans up anything that needs it. Eg. the ENGINE_add() function
 505  * automatically ensures the list cleanup function is registered to be called
 506  * from ENGINE_cleanup(). Similarly, all ENGINE_register_*** functions ensure
 507  * ENGINE_cleanup() will clean up after them. */
 508 void ENGINE_cleanup(void);
 509 
 510 /* These return values from within the ENGINE structure. These can be useful
 511  * with functional references as well as structural references - it depends
 512  * which you obtained. Using the result for functional purposes if you only
 513  * obtained a structural reference may be problematic! */
 514 const char *ENGINE_get_id(const ENGINE *e);
 515 const char *ENGINE_get_name(const ENGINE *e);
 516 const RSA_METHOD *ENGINE_get_RSA(const ENGINE *e);
 517 const DSA_METHOD *ENGINE_get_DSA(const ENGINE *e);
 518 const ECDH_METHOD *ENGINE_get_ECDH(const ENGINE *e);
 519 const ECDSA_METHOD *ENGINE_get_ECDSA(const ENGINE *e);
 520 const DH_METHOD *ENGINE_get_DH(const ENGINE *e);
 521 const RAND_METHOD *ENGINE_get_RAND(const ENGINE *e);
 522 const STORE_METHOD *ENGINE_get_STORE(const ENGINE *e);
 523 ENGINE_GEN_INT_FUNC_PTR ENGINE_get_destroy_function(const ENGINE *e);
 524 ENGINE_GEN_INT_FUNC_PTR ENGINE_get_init_function(const ENGINE *e);
 525 ENGINE_GEN_INT_FUNC_PTR ENGINE_get_finish_function(const ENGINE *e);
 526 ENGINE_CTRL_FUNC_PTR ENGINE_get_ctrl_function(const ENGINE *e);
 527 ENGINE_LOAD_KEY_PTR ENGINE_get_load_privkey_function(const ENGINE *e);
 528 ENGINE_LOAD_KEY_PTR ENGINE_get_load_pubkey_function(const ENGINE *e);
 529 ENGINE_SSL_CLIENT_CERT_PTR ENGINE_get_ssl_client_cert_function(const ENGINE *e);
 530 ENGINE_CIPHERS_PTR ENGINE_get_ciphers(const ENGINE *e);
 531 ENGINE_DIGESTS_PTR ENGINE_get_digests(const ENGINE *e);
 532 ENGINE_PKEY_METHS_PTR ENGINE_get_pkey_meths(const ENGINE *e);
 533 ENGINE_PKEY_ASN1_METHS_PTR ENGINE_get_pkey_asn1_meths(const ENGINE *e);
 534 const EVP_CIPHER *ENGINE_get_cipher(ENGINE *e, int nid);
 535 const EVP_MD *ENGINE_get_digest(ENGINE *e, int nid);
 536 const EVP_PKEY_METHOD *ENGINE_get_pkey_meth(ENGINE *e, int nid);
 537 const EVP_PKEY_ASN1_METHOD *ENGINE_get_pkey_asn1_meth(ENGINE *e, int nid);
 538 const EVP_PKEY_ASN1_METHOD *ENGINE_get_pkey_asn1_meth_str(ENGINE *e,
 539                                         const char *str, int len);
 540 const EVP_PKEY_ASN1_METHOD *ENGINE_pkey_asn1_find_str(ENGINE **pe,
 541                                         const char *str, int len);
 542 const ENGINE_CMD_DEFN *ENGINE_get_cmd_defns(const ENGINE *e);
 543 int ENGINE_get_flags(const ENGINE *e);
 544 
 545 /* FUNCTIONAL functions. These functions deal with ENGINE structures
 546  * that have (or will) be initialised for use. Broadly speaking, the
 547  * structural functions are useful for iterating the list of available
 548  * engine types, creating new engine types, and other "list" operations.
 549  * These functions actually deal with ENGINEs that are to be used. As
 550  * such these functions can fail (if applicable) when particular
 551  * engines are unavailable - eg. if a hardware accelerator is not
 552  * attached or not functioning correctly. Each ENGINE has 2 reference
 553  * counts; structural and functional. Every time a functional reference
 554  * is obtained or released, a corresponding structural reference is
 555  * automatically obtained or released too. */
 556 
 557 /* Initialise a engine type for use (or up its reference count if it's
 558  * already in use). This will fail if the engine is not currently
 559  * operational and cannot initialise. */
 560 int ENGINE_init(ENGINE *e);
 561 /* Free a functional reference to a engine type. This does not require
 562  * a corresponding call to ENGINE_free as it also releases a structural
 563  * reference. */
 564 int ENGINE_finish(ENGINE *e);
 565 
 566 /* The following functions handle keys that are stored in some secondary
 567  * location, handled by the engine.  The storage may be on a card or
 568  * whatever. */
 569 EVP_PKEY *ENGINE_load_private_key(ENGINE *e, const char *key_id,
 570         UI_METHOD *ui_method, void *callback_data);
 571 EVP_PKEY *ENGINE_load_public_key(ENGINE *e, const char *key_id,
 572         UI_METHOD *ui_method, void *callback_data);
 573 int ENGINE_load_ssl_client_cert(ENGINE *e, SSL *s,
 574         STACK_OF(X509_NAME) *ca_dn, X509 **pcert, EVP_PKEY **ppkey,
 575         STACK_OF(X509) **pother,
 576         UI_METHOD *ui_method, void *callback_data);
 577 
 578 /* This returns a pointer for the current ENGINE structure that
 579  * is (by default) performing any RSA operations. The value returned
 580  * is an incremented reference, so it should be free'd (ENGINE_finish)
 581  * before it is discarded. */
 582 ENGINE *ENGINE_get_default_RSA(void);
 583 /* Same for the other "methods" */
 584 ENGINE *ENGINE_get_default_DSA(void);
 585 ENGINE *ENGINE_get_default_ECDH(void);
 586 ENGINE *ENGINE_get_default_ECDSA(void);
 587 ENGINE *ENGINE_get_default_DH(void);
 588 ENGINE *ENGINE_get_default_RAND(void);
 589 /* These functions can be used to get a functional reference to perform
 590  * ciphering or digesting corresponding to "nid". */
 591 ENGINE *ENGINE_get_cipher_engine(int nid);
 592 ENGINE *ENGINE_get_digest_engine(int nid);
 593 ENGINE *ENGINE_get_pkey_meth_engine(int nid);
 594 ENGINE *ENGINE_get_pkey_asn1_meth_engine(int nid);
 595 
 596 /* This sets a new default ENGINE structure for performing RSA
 597  * operations. If the result is non-zero (success) then the ENGINE
 598  * structure will have had its reference count up'd so the caller
 599  * should still free their own reference 'e'. */
 600 int ENGINE_set_default_RSA(ENGINE *e);
 601 int ENGINE_set_default_string(ENGINE *e, const char *def_list);
 602 /* Same for the other "methods" */
 603 int ENGINE_set_default_DSA(ENGINE *e);
 604 int ENGINE_set_default_ECDH(ENGINE *e);
 605 int ENGINE_set_default_ECDSA(ENGINE *e);
 606 int ENGINE_set_default_DH(ENGINE *e);
 607 int ENGINE_set_default_RAND(ENGINE *e);
 608 int ENGINE_set_default_ciphers(ENGINE *e);
 609 int ENGINE_set_default_digests(ENGINE *e);
 610 int ENGINE_set_default_pkey_meths(ENGINE *e);
 611 int ENGINE_set_default_pkey_asn1_meths(ENGINE *e);
 612 
 613 /* The combination "set" - the flags are bitwise "OR"d from the
 614  * ENGINE_METHOD_*** defines above. As with the "ENGINE_register_complete()"
 615  * function, this function can result in unnecessary static linkage. If your
 616  * application requires only specific functionality, consider using more
 617  * selective functions. */
 618 int ENGINE_set_default(ENGINE *e, unsigned int flags);
 619 
 620 void ENGINE_add_conf_module(void);
 621 
 622 /* Deprecated functions ... */
 623 /* int ENGINE_clear_defaults(void); */
 624 
 625 /**************************/
 626 /* DYNAMIC ENGINE SUPPORT */
 627 /**************************/
 628 
 629 /* Binary/behaviour compatibility levels */
 630 #define OSSL_DYNAMIC_VERSION            (unsigned long)0x00020000
 631 /* Binary versions older than this are too old for us (whether we're a loader or
 632  * a loadee) */
 633 #define OSSL_DYNAMIC_OLDEST             (unsigned long)0x00020000
 634 
 635 /* When compiling an ENGINE entirely as an external shared library, loadable by
 636  * the "dynamic" ENGINE, these types are needed. The 'dynamic_fns' structure
 637  * type provides the calling application's (or library's) error functionality
 638  * and memory management function pointers to the loaded library. These should
 639  * be used/set in the loaded library code so that the loading application's
 640  * 'state' will be used/changed in all operations. The 'static_state' pointer
 641  * allows the loaded library to know if it shares the same static data as the
 642  * calling application (or library), and thus whether these callbacks need to be
 643  * set or not. */
 644 typedef void *(*dyn_MEM_malloc_cb)(size_t);
 645 typedef void *(*dyn_MEM_realloc_cb)(void *, size_t);
 646 typedef void (*dyn_MEM_free_cb)(void *);
 647 typedef struct st_dynamic_MEM_fns {
 648         dyn_MEM_malloc_cb                       malloc_cb;
 649         dyn_MEM_realloc_cb                      realloc_cb;
 650         dyn_MEM_free_cb                         free_cb;
 651         } dynamic_MEM_fns;
 652 /* FIXME: Perhaps the memory and locking code (crypto.h) should declare and use
 653  * these types so we (and any other dependant code) can simplify a bit?? */
 654 typedef void (*dyn_lock_locking_cb)(int,int,const char *,int);
 655 typedef int (*dyn_lock_add_lock_cb)(int*,int,int,const char *,int);
 656 typedef struct CRYPTO_dynlock_value *(*dyn_dynlock_create_cb)(
 657                                                 const char *,int);
 658 typedef void (*dyn_dynlock_lock_cb)(int,struct CRYPTO_dynlock_value *,
 659                                                 const char *,int);
 660 typedef void (*dyn_dynlock_destroy_cb)(struct CRYPTO_dynlock_value *,
 661                                                 const char *,int);
 662 typedef struct st_dynamic_LOCK_fns {
 663         dyn_lock_locking_cb                     lock_locking_cb;
 664         dyn_lock_add_lock_cb                    lock_add_lock_cb;
 665         dyn_dynlock_create_cb                   dynlock_create_cb;
 666         dyn_dynlock_lock_cb                     dynlock_lock_cb;
 667         dyn_dynlock_destroy_cb                  dynlock_destroy_cb;
 668         } dynamic_LOCK_fns;
 669 /* The top-level structure */
 670 typedef struct st_dynamic_fns {
 671         void                                    *static_state;
 672         const ERR_FNS                           *err_fns;
 673         const CRYPTO_EX_DATA_IMPL               *ex_data_fns;
 674         dynamic_MEM_fns                         mem_fns;
 675         dynamic_LOCK_fns                        lock_fns;
 676         } dynamic_fns;
 677 
 678 /* The version checking function should be of this prototype. NB: The
 679  * ossl_version value passed in is the OSSL_DYNAMIC_VERSION of the loading code.
 680  * If this function returns zero, it indicates a (potential) version
 681  * incompatibility and the loaded library doesn't believe it can proceed.
 682  * Otherwise, the returned value is the (latest) version supported by the
 683  * loading library. The loader may still decide that the loaded code's version
 684  * is unsatisfactory and could veto the load. The function is expected to
 685  * be implemented with the symbol name "v_check", and a default implementation
 686  * can be fully instantiated with IMPLEMENT_DYNAMIC_CHECK_FN(). */
 687 typedef unsigned long (*dynamic_v_check_fn)(unsigned long ossl_version);
 688 #define IMPLEMENT_DYNAMIC_CHECK_FN() \
 689         OPENSSL_EXPORT unsigned long v_check(unsigned long v); \
 690         OPENSSL_EXPORT unsigned long v_check(unsigned long v) { \
 691                 if(v >= OSSL_DYNAMIC_OLDEST) return OSSL_DYNAMIC_VERSION; \
 692                 return 0; }
 693 
 694 /* This function is passed the ENGINE structure to initialise with its own
 695  * function and command settings. It should not adjust the structural or
 696  * functional reference counts. If this function returns zero, (a) the load will
 697  * be aborted, (b) the previous ENGINE state will be memcpy'd back onto the
 698  * structure, and (c) the shared library will be unloaded. So implementations
 699  * should do their own internal cleanup in failure circumstances otherwise they
 700  * could leak. The 'id' parameter, if non-NULL, represents the ENGINE id that
 701  * the loader is looking for. If this is NULL, the shared library can choose to
 702  * return failure or to initialise a 'default' ENGINE. If non-NULL, the shared
 703  * library must initialise only an ENGINE matching the passed 'id'. The function
 704  * is expected to be implemented with the symbol name "bind_engine". A standard
 705  * implementation can be instantiated with IMPLEMENT_DYNAMIC_BIND_FN(fn) where
 706  * the parameter 'fn' is a callback function that populates the ENGINE structure
 707  * and returns an int value (zero for failure). 'fn' should have prototype;
 708  *    [static] int fn(ENGINE *e, const char *id); */
 709 typedef int (*dynamic_bind_engine)(ENGINE *e, const char *id,
 710                                 const dynamic_fns *fns);
 711 #define IMPLEMENT_DYNAMIC_BIND_FN(fn) \
 712         OPENSSL_EXPORT \
 713         int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns); \
 714         OPENSSL_EXPORT \
 715         int bind_engine(ENGINE *e, const char *id, const dynamic_fns *fns) { \
 716                 if(ENGINE_get_static_state() == fns->static_state) goto skip_cbs; \
 717                 if(!CRYPTO_set_mem_functions(fns->mem_fns.malloc_cb, \
 718                         fns->mem_fns.realloc_cb, fns->mem_fns.free_cb)) \
 719                         return 0; \
 720                 CRYPTO_set_locking_callback(fns->lock_fns.lock_locking_cb); \
 721                 CRYPTO_set_add_lock_callback(fns->lock_fns.lock_add_lock_cb); \
 722                 CRYPTO_set_dynlock_create_callback(fns->lock_fns.dynlock_create_cb); \
 723                 CRYPTO_set_dynlock_lock_callback(fns->lock_fns.dynlock_lock_cb); \
 724                 CRYPTO_set_dynlock_destroy_callback(fns->lock_fns.dynlock_destroy_cb); \
 725                 if(!CRYPTO_set_ex_data_implementation(fns->ex_data_fns)) \
 726                         return 0; \
 727                 if(!ERR_set_implementation(fns->err_fns)) return 0; \
 728         skip_cbs: \
 729                 if(!fn(e,id)) return 0; \
 730                 return 1; }
 731 
 732 /* If the loading application (or library) and the loaded ENGINE library share
 733  * the same static data (eg. they're both dynamically linked to the same
 734  * libcrypto.so) we need a way to avoid trying to set system callbacks - this
 735  * would fail, and for the same reason that it's unnecessary to try. If the
 736  * loaded ENGINE has (or gets from through the loader) its own copy of the
 737  * libcrypto static data, we will need to set the callbacks. The easiest way to
 738  * detect this is to have a function that returns a pointer to some static data
 739  * and let the loading application and loaded ENGINE compare their respective
 740  * values. */
 741 void *ENGINE_get_static_state(void);
 742 
 743 #if defined(__OpenBSD__) || defined(__FreeBSD__) || defined(HAVE_CRYPTODEV)
 744 void ENGINE_setup_bsd_cryptodev(void);
 745 #endif
 746 
 747 /* BEGIN ERROR CODES */
 748 /* The following lines are auto generated by the script mkerr.pl. Any changes
 749  * made after this point may be overwritten when the script is next run.
 750  */
 751 void ERR_load_ENGINE_strings(void);
 752 
 753 /* Error codes for the ENGINE functions. */
 754 
 755 /* Function codes. */
 756 #define ENGINE_F_DYNAMIC_CTRL                            180
 757 #define ENGINE_F_DYNAMIC_GET_DATA_CTX                    181
 758 #define ENGINE_F_DYNAMIC_LOAD                            182
 759 #define ENGINE_F_DYNAMIC_SET_DATA_CTX                    183
 760 #define ENGINE_F_ENGINE_ADD                              105
 761 #define ENGINE_F_ENGINE_BY_ID                            106
 762 #define ENGINE_F_ENGINE_CMD_IS_EXECUTABLE                170
 763 #define ENGINE_F_ENGINE_CTRL                             142
 764 #define ENGINE_F_ENGINE_CTRL_CMD                         178
 765 #define ENGINE_F_ENGINE_CTRL_CMD_STRING                  171
 766 #define ENGINE_F_ENGINE_FINISH                           107
 767 #define ENGINE_F_ENGINE_FREE_UTIL                        108
 768 #define ENGINE_F_ENGINE_GET_CIPHER                       185
 769 #define ENGINE_F_ENGINE_GET_DEFAULT_TYPE                 177
 770 #define ENGINE_F_ENGINE_GET_DIGEST                       186
 771 #define ENGINE_F_ENGINE_GET_NEXT                         115
 772 #define ENGINE_F_ENGINE_GET_PKEY_ASN1_METH               193
 773 #define ENGINE_F_ENGINE_GET_PKEY_METH                    192
 774 #define ENGINE_F_ENGINE_GET_PREV                         116
 775 #define ENGINE_F_ENGINE_INIT                             119
 776 #define ENGINE_F_ENGINE_LIST_ADD                         120
 777 #define ENGINE_F_ENGINE_LIST_REMOVE                      121
 778 #define ENGINE_F_ENGINE_LOAD_PRIVATE_KEY                 150
 779 #define ENGINE_F_ENGINE_LOAD_PUBLIC_KEY                  151
 780 #define ENGINE_F_ENGINE_LOAD_SSL_CLIENT_CERT             194
 781 #define ENGINE_F_ENGINE_NEW                              122
 782 #define ENGINE_F_ENGINE_REMOVE                           123
 783 #define ENGINE_F_ENGINE_SET_DEFAULT_STRING               189
 784 #define ENGINE_F_ENGINE_SET_DEFAULT_TYPE                 126
 785 #define ENGINE_F_ENGINE_SET_ID                           129
 786 #define ENGINE_F_ENGINE_SET_NAME                         130
 787 #define ENGINE_F_ENGINE_TABLE_REGISTER                   184
 788 #define ENGINE_F_ENGINE_UNLOAD_KEY                       152
 789 #define ENGINE_F_ENGINE_UNLOCKED_FINISH                  191
 790 #define ENGINE_F_ENGINE_UP_REF                           190
 791 #define ENGINE_F_INT_CTRL_HELPER                         172
 792 #define ENGINE_F_INT_ENGINE_CONFIGURE                    188
 793 #define ENGINE_F_INT_ENGINE_MODULE_INIT                  187
 794 #define ENGINE_F_LOG_MESSAGE                             141
 795 
 796 /* Reason codes. */
 797 #define ENGINE_R_ALREADY_LOADED                          100
 798 #define ENGINE_R_ARGUMENT_IS_NOT_A_NUMBER                133
 799 #define ENGINE_R_CMD_NOT_EXECUTABLE                      134
 800 #define ENGINE_R_COMMAND_TAKES_INPUT                     135
 801 #define ENGINE_R_COMMAND_TAKES_NO_INPUT                  136
 802 #define ENGINE_R_CONFLICTING_ENGINE_ID                   103
 803 #define ENGINE_R_CTRL_COMMAND_NOT_IMPLEMENTED            119
 804 #define ENGINE_R_DH_NOT_IMPLEMENTED                      139
 805 #define ENGINE_R_DSA_NOT_IMPLEMENTED                     140
 806 #define ENGINE_R_DSO_FAILURE                             104
 807 #define ENGINE_R_DSO_NOT_FOUND                           132
 808 #define ENGINE_R_ENGINES_SECTION_ERROR                   148
 809 #define ENGINE_R_ENGINE_CONFIGURATION_ERROR              102
 810 #define ENGINE_R_ENGINE_IS_NOT_IN_LIST                   105
 811 #define ENGINE_R_ENGINE_SECTION_ERROR                    149
 812 #define ENGINE_R_FAILED_LOADING_PRIVATE_KEY              128
 813 #define ENGINE_R_FAILED_LOADING_PUBLIC_KEY               129
 814 #define ENGINE_R_FINISH_FAILED                           106
 815 #define ENGINE_R_GET_HANDLE_FAILED                       107
 816 #define ENGINE_R_ID_OR_NAME_MISSING                      108
 817 #define ENGINE_R_INIT_FAILED                             109
 818 #define ENGINE_R_INTERNAL_LIST_ERROR                     110
 819 #define ENGINE_R_INVALID_ARGUMENT                        143
 820 #define ENGINE_R_INVALID_CMD_NAME                        137
 821 #define ENGINE_R_INVALID_CMD_NUMBER                      138
 822 #define ENGINE_R_INVALID_INIT_VALUE                      151
 823 #define ENGINE_R_INVALID_STRING                          150
 824 #define ENGINE_R_NOT_INITIALISED                         117
 825 #define ENGINE_R_NOT_LOADED                              112
 826 #define ENGINE_R_NO_CONTROL_FUNCTION                     120
 827 #define ENGINE_R_NO_INDEX                                144
 828 #define ENGINE_R_NO_LOAD_FUNCTION                        125
 829 #define ENGINE_R_NO_REFERENCE                            130
 830 #define ENGINE_R_NO_SUCH_ENGINE                          116
 831 #define ENGINE_R_NO_UNLOAD_FUNCTION                      126
 832 #define ENGINE_R_PROVIDE_PARAMETERS                      113
 833 #define ENGINE_R_RSA_NOT_IMPLEMENTED                     141
 834 #define ENGINE_R_UNIMPLEMENTED_CIPHER                    146
 835 #define ENGINE_R_UNIMPLEMENTED_DIGEST                    147
 836 #define ENGINE_R_UNIMPLEMENTED_PUBLIC_KEY_METHOD         101
 837 #define ENGINE_R_VERSION_INCOMPATIBILITY                 145
 838 
 839 #ifdef  __cplusplus
 840 }
 841 #endif
 842 #endif