include/openssl/core_numbers.h

   1 /*
   2  * Copyright 2019 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #ifndef OSSL_CORE_NUMBERS_H
  11 # define OSSL_CORE_NUMBERS_H
  12
  13 # include <stdarg.h>
  14 # include <openssl/core.h>
  15
  16 # ifdef __cplusplus
  17 extern "C" {
  18 # endif
  19
  20 /*-
  21  * Identities
  22  * ----------
  23  *
  24  * All series start with 1, to allow 0 to be an array terminator.
  25  * For any FUNC identity, we also provide a function signature typedef
  26  * and a static inline function to extract a function pointer from a
  27  * OSSL_DISPATCH element in a type safe manner.
  28  *
  29  * Names:
  30  * for any function base name 'foo' (uppercase form 'FOO'), we will have
  31  * the following:
  32  * - a macro for the identity with the name OSSL_FUNC_'FOO' or derivates
  33  *   thereof (to be specified further down)
  34  * - a function signature typedef with the name OSSL_'foo'_fn
  35  * - a function pointer extractor function with the name OSSL_'foo'
  36  */
  37
  38 /*
  39  * Helper macro to create the function signature typedef and the extractor
  40  * |type| is the return-type of the function, |name| is the name of the
  41  * function to fetch, and |args| is a parenthesized list of parameters
  42  * for the function (that is, it is |name|'s function signature).
  43  */
  44 #define OSSL_CORE_MAKE_FUNC(type,name,args)                             \
  45     typedef type (OSSL_##name##_fn)args;                                \
  46     static ossl_inline \
  47     OSSL_##name##_fn *OSSL_get_##name(const OSSL_DISPATCH *opf)         \
  48     {                                                                   \
  49         return (OSSL_##name##_fn *)opf->function;                       \
  50     }
  51
  52 /*
  53  * Core function identities, for the two OSSL_DISPATCH tables being passed
  54  * in the OSSL_provider_init call.
  55  *
  56  * 0 serves as a marker for the end of the OSSL_DISPATCH array, and must
  57  * therefore NEVER be used as a function identity.
  58  */
  59 /* Functions provided by the Core to the provider, reserved numbers 1-1023 */
  60 # define OSSL_FUNC_CORE_GETTABLE_PARAMS        1
  61 OSSL_CORE_MAKE_FUNC(const OSSL_PARAM *,
  62                     core_gettable_params,(const OSSL_PROVIDER *prov))
  63 # define OSSL_FUNC_CORE_GET_PARAMS             2
  64 OSSL_CORE_MAKE_FUNC(int,core_get_params,(const OSSL_PROVIDER *prov,
  65                                          OSSL_PARAM params[]))
  66 # define OSSL_FUNC_CORE_THREAD_START           3
  67 OSSL_CORE_MAKE_FUNC(int,core_thread_start,(const OSSL_PROVIDER *prov,
  68                                            OSSL_thread_stop_handler_fn handfn))
  69 # define OSSL_FUNC_CORE_GET_LIBRARY_CONTEXT    4
  70 OSSL_CORE_MAKE_FUNC(OPENSSL_CTX *,core_get_library_context,
  71                     (const OSSL_PROVIDER *prov))
  72 # define OSSL_FUNC_CORE_NEW_ERROR              5
  73 OSSL_CORE_MAKE_FUNC(void,core_new_error,(const OSSL_PROVIDER *prov))
  74 # define OSSL_FUNC_CORE_SET_ERROR_DEBUG        6
  75 OSSL_CORE_MAKE_FUNC(void,core_set_error_debug,
  76                     (const OSSL_PROVIDER *prov,
  77                      const char *file, int line, const char *func))
  78 # define OSSL_FUNC_CORE_VSET_ERROR             7
  79 OSSL_CORE_MAKE_FUNC(void,core_vset_error,
  80                     (const OSSL_PROVIDER *prov,
  81                      uint32_t reason, const char *fmt, va_list args))
  82
  83 /* Memory allocation, freeing, clearing. */
  84 #define OSSL_FUNC_CRYPTO_MALLOC               10
  85 OSSL_CORE_MAKE_FUNC(void *,
  86         CRYPTO_malloc, (size_t num, const char *file, int line))
  87 #define OSSL_FUNC_CRYPTO_ZALLOC               11
  88 OSSL_CORE_MAKE_FUNC(void *,
  89         CRYPTO_zalloc, (size_t num, const char *file, int line))
  90 #define OSSL_FUNC_CRYPTO_FREE                 12
  91 OSSL_CORE_MAKE_FUNC(void,
  92         CRYPTO_free, (void *ptr, const char *file, int line))
  93 #define OSSL_FUNC_CRYPTO_CLEAR_FREE           13
  94 OSSL_CORE_MAKE_FUNC(void,
  95         CRYPTO_clear_free, (void *ptr, size_t num, const char *file, int line))
  96 #define OSSL_FUNC_CRYPTO_REALLOC              14
  97 OSSL_CORE_MAKE_FUNC(void *,
  98         CRYPTO_realloc, (void *addr, size_t num, const char *file, int line))
  99 #define OSSL_FUNC_CRYPTO_CLEAR_REALLOC        15
 100 OSSL_CORE_MAKE_FUNC(void *,
 101         CRYPTO_clear_realloc, (void *addr, size_t old_num, size_t num,
 102                                const char *file, int line))
 103 #define OSSL_FUNC_CRYPTO_SECURE_MALLOC        16
 104 OSSL_CORE_MAKE_FUNC(void *,
 105         CRYPTO_secure_malloc, (size_t num, const char *file, int line))
 106 #define OSSL_FUNC_CRYPTO_SECURE_ZALLOC        17
 107 OSSL_CORE_MAKE_FUNC(void *,
 108         CRYPTO_secure_zalloc, (size_t num, const char *file, int line))
 109 #define OSSL_FUNC_CRYPTO_SECURE_FREE          18
 110 OSSL_CORE_MAKE_FUNC(void,
 111         CRYPTO_secure_free, (void *ptr, const char *file, int line))
 112 #define OSSL_FUNC_CRYPTO_SECURE_CLEAR_FREE    19
 113 OSSL_CORE_MAKE_FUNC(void,
 114         CRYPTO_secure_clear_free, (void *ptr, size_t num, const char *file,
 115                                    int line))
 116 #define OSSL_FUNC_CRYPTO_SECURE_ALLOCATED     20
 117 OSSL_CORE_MAKE_FUNC(int,
 118         CRYPTO_secure_allocated, (const void *ptr))
 119 #define OSSL_FUNC_OPENSSL_CLEANSE             21
 120 OSSL_CORE_MAKE_FUNC(void,
 121         OPENSSL_cleanse, (void *ptr, size_t len))
 122
 123 /* Bio functions provided by the core */
 124 #define OSSL_FUNC_BIO_NEW_FILE                22
 125 #define OSSL_FUNC_BIO_NEW_MEMBUF              23
 126 #define OSSL_FUNC_BIO_READ                    24
 127 #define OSSL_FUNC_BIO_FREE                    25
 128
 129 OSSL_CORE_MAKE_FUNC(BIO *, BIO_new_file, (const char *filename, const char *mode))
 130 OSSL_CORE_MAKE_FUNC(BIO *, BIO_new_membuf, (const void *buf, int len))
 131 OSSL_CORE_MAKE_FUNC(int, BIO_read, (BIO *bio, void *data, size_t data_len,
 132                                     size_t *bytes_read))
 133 OSSL_CORE_MAKE_FUNC(int, BIO_free, (BIO *bio))
 134
 135 /* Functions provided by the provider to the Core, reserved numbers 1024-1535 */
 136 # define OSSL_FUNC_PROVIDER_TEARDOWN         1024
 137 OSSL_CORE_MAKE_FUNC(void,provider_teardown,(void *provctx))
 138 # define OSSL_FUNC_PROVIDER_GETTABLE_PARAMS  1025
 139 OSSL_CORE_MAKE_FUNC(const OSSL_PARAM *,
 140                     provider_gettable_params,(void *provctx))
 141 # define OSSL_FUNC_PROVIDER_GET_PARAMS       1026
 142 OSSL_CORE_MAKE_FUNC(int,provider_get_params,(void *provctx,
 143                                              OSSL_PARAM params[]))
 144 # define OSSL_FUNC_PROVIDER_QUERY_OPERATION  1027
 145 OSSL_CORE_MAKE_FUNC(const OSSL_ALGORITHM *,provider_query_operation,
 146                     (void *provctx, int operation_id, const int *no_store))
 147 # define OSSL_FUNC_PROVIDER_GET_REASON_STRINGS 1028
 148 OSSL_CORE_MAKE_FUNC(const OSSL_ITEM *,provider_get_reason_strings,
 149                     (void *provctx))
 150
 151 /* Operations */
 152
 153 # define OSSL_OP_DIGEST                              1
 154 # define OSSL_OP_CIPHER                              2   /* Symmetric Ciphers */
 155 # define OSSL_OP_MAC                                 3
 156 # define OSSL_OP_KEYMGMT                            10
 157 # define OSSL_OP_KEYEXCH                            11
 158 /* Highest known operation number */
 159 # define OSSL_OP__HIGHEST                           11
 160
 161 /* Digests */
 162
 163 # define OSSL_FUNC_DIGEST_NEWCTX                     1
 164 # define OSSL_FUNC_DIGEST_INIT                       2
 165 # define OSSL_FUNC_DIGEST_UPDATE                     3
 166 # define OSSL_FUNC_DIGEST_FINAL                      4
 167 # define OSSL_FUNC_DIGEST_DIGEST                     5
 168 # define OSSL_FUNC_DIGEST_FREECTX                    6
 169 # define OSSL_FUNC_DIGEST_DUPCTX                     7
 170 # define OSSL_FUNC_DIGEST_GET_PARAMS                 8
 171 # define OSSL_FUNC_DIGEST_SET_CTX_PARAMS             9
 172 # define OSSL_FUNC_DIGEST_GET_CTX_PARAMS            10
 173 # define OSSL_FUNC_DIGEST_GETTABLE_PARAMS           11
 174 # define OSSL_FUNC_DIGEST_SETTABLE_CTX_PARAMS       12
 175 # define OSSL_FUNC_DIGEST_GETTABLE_CTX_PARAMS       13
 176
 177 OSSL_CORE_MAKE_FUNC(void *, OP_digest_newctx, (void *provctx))
 178 OSSL_CORE_MAKE_FUNC(int, OP_digest_init, (void *dctx))
 179 OSSL_CORE_MAKE_FUNC(int, OP_digest_update,
 180                     (void *dctx, const unsigned char *in, size_t inl))
 181 OSSL_CORE_MAKE_FUNC(int, OP_digest_final,
 182                     (void *dctx,
 183                      unsigned char *out, size_t *outl, size_t outsz))
 184 OSSL_CORE_MAKE_FUNC(int, OP_digest_digest,
 185                     (void *provctx, const unsigned char *in, size_t inl,
 186                      unsigned char *out, size_t *outl, size_t outsz))
 187
 188 OSSL_CORE_MAKE_FUNC(void, OP_digest_freectx, (void *dctx))
 189 OSSL_CORE_MAKE_FUNC(void *, OP_digest_dupctx, (void *dctx))
 190
 191 OSSL_CORE_MAKE_FUNC(int, OP_digest_get_params, (OSSL_PARAM params[]))
 192 OSSL_CORE_MAKE_FUNC(int, OP_digest_set_ctx_params,
 193                     (void *vctx, const OSSL_PARAM params[]))
 194 OSSL_CORE_MAKE_FUNC(int, OP_digest_get_ctx_params,
 195                     (void *vctx, OSSL_PARAM params[]))
 196 OSSL_CORE_MAKE_FUNC(const OSSL_PARAM *, OP_digest_gettable_params, (void))
 197 OSSL_CORE_MAKE_FUNC(const OSSL_PARAM *, OP_digest_settable_ctx_params, (void))
 198 OSSL_CORE_MAKE_FUNC(const OSSL_PARAM *, OP_digest_gettable_ctx_params, (void))
 199
 200 /* Symmetric Ciphers */
 201
 202 # define OSSL_FUNC_CIPHER_NEWCTX                     1
 203 # define OSSL_FUNC_CIPHER_ENCRYPT_INIT               2
 204 # define OSSL_FUNC_CIPHER_DECRYPT_INIT               3
 205 # define OSSL_FUNC_CIPHER_UPDATE                     4
 206 # define OSSL_FUNC_CIPHER_FINAL                      5
 207 # define OSSL_FUNC_CIPHER_CIPHER                     6
 208 # define OSSL_FUNC_CIPHER_FREECTX                    7
 209 # define OSSL_FUNC_CIPHER_DUPCTX                     8
 210 # define OSSL_FUNC_CIPHER_GET_PARAMS                 9
 211 # define OSSL_FUNC_CIPHER_GET_CTX_PARAMS            10
 212 # define OSSL_FUNC_CIPHER_SET_CTX_PARAMS            11
 213 # define OSSL_FUNC_CIPHER_GETTABLE_PARAMS           12
 214 # define OSSL_FUNC_CIPHER_GETTABLE_CTX_PARAMS       13
 215 # define OSSL_FUNC_CIPHER_SETTABLE_CTX_PARAMS       14
 216
 217 OSSL_CORE_MAKE_FUNC(void *, OP_cipher_newctx, (void *provctx))
 218 OSSL_CORE_MAKE_FUNC(int, OP_cipher_encrypt_init, (void *cctx,
 219                                                   const unsigned char *key,
 220                                                   size_t keylen,
 221                                                   const unsigned char *iv,
 222                                                   size_t ivlen))
 223 OSSL_CORE_MAKE_FUNC(int, OP_cipher_decrypt_init, (void *cctx,
 224                                                   const unsigned char *key,
 225                                                   size_t keylen,
 226                                                   const unsigned char *iv,
 227                                                   size_t ivlen))
 228 OSSL_CORE_MAKE_FUNC(int, OP_cipher_update,
 229                     (void *cctx,
 230                      unsigned char *out, size_t *outl, size_t outsize,
 231                      const unsigned char *in, size_t inl))
 232 OSSL_CORE_MAKE_FUNC(int, OP_cipher_final,
 233                     (void *cctx,
 234                      unsigned char *out, size_t *outl, size_t outsize))
 235 OSSL_CORE_MAKE_FUNC(int, OP_cipher_cipher,
 236                     (void *cctx,
 237                      unsigned char *out, size_t *outl, size_t outsize,
 238                      const unsigned char *in, size_t inl))
 239 OSSL_CORE_MAKE_FUNC(void, OP_cipher_freectx, (void *cctx))
 240 OSSL_CORE_MAKE_FUNC(void *, OP_cipher_dupctx, (void *cctx))
 241 OSSL_CORE_MAKE_FUNC(int, OP_cipher_get_params, (OSSL_PARAM params[]))
 242 OSSL_CORE_MAKE_FUNC(int, OP_cipher_get_ctx_params, (void *cctx,
 243                                                     OSSL_PARAM params[]))
 244 OSSL_CORE_MAKE_FUNC(int, OP_cipher_set_ctx_params, (void *cctx,
 245                                                     const OSSL_PARAM params[]))
 246 OSSL_CORE_MAKE_FUNC(const OSSL_PARAM *, OP_cipher_gettable_params,     (void))
 247 OSSL_CORE_MAKE_FUNC(const OSSL_PARAM *, OP_cipher_settable_ctx_params, (void))
 248 OSSL_CORE_MAKE_FUNC(const OSSL_PARAM *, OP_cipher_gettable_ctx_params, (void))
 249
 250 /* MACs */
 251
 252 # define OSSL_FUNC_MAC_NEWCTX                        1
 253 # define OSSL_FUNC_MAC_DUPCTX                        2
 254 # define OSSL_FUNC_MAC_FREECTX                       3
 255 # define OSSL_FUNC_MAC_INIT                          4
 256 # define OSSL_FUNC_MAC_UPDATE                        5
 257 # define OSSL_FUNC_MAC_FINAL                         6
 258 # define OSSL_FUNC_MAC_GET_PARAMS                    7
 259 # define OSSL_FUNC_MAC_GET_CTX_PARAMS                8
 260 # define OSSL_FUNC_MAC_SET_CTX_PARAMS                9
 261 # define OSSL_FUNC_MAC_GETTABLE_PARAMS              10
 262 # define OSSL_FUNC_MAC_GETTABLE_CTX_PARAMS          11
 263 # define OSSL_FUNC_MAC_SETTABLE_CTX_PARAMS          12
 264
 265 OSSL_CORE_MAKE_FUNC(void *, OP_mac_newctx, (void *provctx))
 266 OSSL_CORE_MAKE_FUNC(void *, OP_mac_dupctx, (void *src))
 267 OSSL_CORE_MAKE_FUNC(void, OP_mac_freectx, (void *mctx))
 268 OSSL_CORE_MAKE_FUNC(size_t, OP_mac_size, (void *mctx))
 269 OSSL_CORE_MAKE_FUNC(int, OP_mac_init, (void *mctx))
 270 OSSL_CORE_MAKE_FUNC(int, OP_mac_update,
 271                     (void *mctx, const unsigned char *in, size_t inl))
 272 OSSL_CORE_MAKE_FUNC(int, OP_mac_final,
 273                     (void *mctx,
 274                      unsigned char *out, size_t *outl, size_t outsize))
 275 OSSL_CORE_MAKE_FUNC(const OSSL_PARAM *, OP_mac_gettable_params, (void))
 276 OSSL_CORE_MAKE_FUNC(const OSSL_PARAM *, OP_mac_gettable_ctx_params, (void))
 277 OSSL_CORE_MAKE_FUNC(const OSSL_PARAM *, OP_mac_settable_ctx_params, (void))
 278 OSSL_CORE_MAKE_FUNC(int, OP_mac_get_params, (OSSL_PARAM params[]))
 279 OSSL_CORE_MAKE_FUNC(int, OP_mac_get_ctx_params,
 280                     (void *mctx, OSSL_PARAM params[]))
 281 OSSL_CORE_MAKE_FUNC(int, OP_mac_set_ctx_params,
 282                     (void *mctx, const OSSL_PARAM params[]))
 283
 284 /* KDFs and PRFs */
 285 # define OSSL_OP_KDF                                 4
 286
 287 # define OSSL_FUNC_KDF_NEWCTX                        1
 288 # define OSSL_FUNC_KDF_DUPCTX                        2
 289 # define OSSL_FUNC_KDF_FREECTX                       3
 290 # define OSSL_FUNC_KDF_RESET                         4
 291 # define OSSL_FUNC_KDF_DERIVE                        5
 292 # define OSSL_FUNC_KDF_GETTABLE_PARAMS               6
 293 # define OSSL_FUNC_KDF_GETTABLE_CTX_PARAMS           7
 294 # define OSSL_FUNC_KDF_SETTABLE_CTX_PARAMS           8
 295 # define OSSL_FUNC_KDF_GET_PARAMS                    9
 296 # define OSSL_FUNC_KDF_GET_CTX_PARAMS               10
 297 # define OSSL_FUNC_KDF_SET_CTX_PARAMS               11
 298
 299 OSSL_CORE_MAKE_FUNC(void *, OP_kdf_newctx, (void *provctx))
 300 OSSL_CORE_MAKE_FUNC(void *, OP_kdf_dupctx, (void *src))
 301 OSSL_CORE_MAKE_FUNC(void, OP_kdf_freectx, (void *kctx))
 302 OSSL_CORE_MAKE_FUNC(void, OP_kdf_reset, (void *kctx))
 303 OSSL_CORE_MAKE_FUNC(int, OP_kdf_derive, (void *kctx, unsigned char *key,
 304                                           size_t keylen))
 305 OSSL_CORE_MAKE_FUNC(const OSSL_PARAM *, OP_kdf_gettable_params, (void))
 306 OSSL_CORE_MAKE_FUNC(const OSSL_PARAM *, OP_kdf_gettable_ctx_params, (void))
 307 OSSL_CORE_MAKE_FUNC(const OSSL_PARAM *, OP_kdf_settable_ctx_params, (void))
 308 OSSL_CORE_MAKE_FUNC(int, OP_kdf_get_params, (OSSL_PARAM params[]))
 309 OSSL_CORE_MAKE_FUNC(int, OP_kdf_get_ctx_params,
 310                     (void *kctx, OSSL_PARAM params[]))
 311 OSSL_CORE_MAKE_FUNC(int, OP_kdf_set_ctx_params,
 312                     (void *kctx, const OSSL_PARAM params[]))
 313
 314 /*-
 315  * Key management
 316  *
 317  * Key domain parameter references can be created in several manners:
 318  * - by importing the domain parameter material via an OSSL_PARAM array.
 319  * - by generating key domain parameters, given input via an OSSL_PARAM
 320  *   array.
 321  *
 322  * Key references can be created in several manners:
 323  * - by importing the key material via an OSSL_PARAM array.
 324  * - by generating a key, given optional domain parameters and
 325  *   additional keygen parameters.
 326  *   If domain parameters are given, they must have been generated using
 327  *   the domain parameter generator functions.
 328  *   If the domain parameters comes from a different provider, results
 329  *   are undefined.
 330  *   THE CALLER MUST ENSURE THAT CORRECT DOMAIN PARAMETERS ARE USED.
 331  * - by loading an internal key, given a binary blob that forms an identity.
 332  *   THE CALLER MUST ENSURE THAT A CORRECT IDENTITY IS USED.
 333  */
 334
 335 /* Key domain parameter creation and destruction */
 336 # define OSSL_FUNC_KEYMGMT_IMPORTDOMPARAMS          1
 337 # define OSSL_FUNC_KEYMGMT_GENDOMPARAMS             2
 338 # define OSSL_FUNC_KEYMGMT_FREEDOMPARAMS            3
 339 OSSL_CORE_MAKE_FUNC(void *, OP_keymgmt_importdomparams,
 340                     (void *provctx, const OSSL_PARAM params[]))
 341 OSSL_CORE_MAKE_FUNC(void *, OP_keymgmt_gendomparams,
 342                     (void *provctx, const OSSL_PARAM params[]))
 343 OSSL_CORE_MAKE_FUNC(void, OP_keymgmt_freedomparams, (void *domparams))
 344
 345 /* Key domain parameter export */
 346 # define OSSL_FUNC_KEYMGMT_EXPORTDOMPARAMS          4
 347 OSSL_CORE_MAKE_FUNC(int, OP_keymgmt_exportdomparams,
 348                     (void *domparams, OSSL_PARAM params[]))
 349
 350 /* Key domain parameter discovery */
 351 # define OSSL_FUNC_KEYMGMT_IMPORTDOMPARAM_TYPES     5
 352 # define OSSL_FUNC_KEYMGMT_EXPORTDOMPARAM_TYPES     6
 353 OSSL_CORE_MAKE_FUNC(const OSSL_PARAM *, OP_keymgmt_importdomparam_types,
 354                     (void))
 355 OSSL_CORE_MAKE_FUNC(const OSSL_PARAM *, OP_keymgmt_exportdomparam_types,
 356                     (void))
 357
 358 /* Key creation and destruction */
 359 # define OSSL_FUNC_KEYMGMT_IMPORTKEY               10
 360 # define OSSL_FUNC_KEYMGMT_GENKEY                  11
 361 # define OSSL_FUNC_KEYMGMT_LOADKEY                 12
 362 # define OSSL_FUNC_KEYMGMT_FREEKEY                 13
 363 OSSL_CORE_MAKE_FUNC(void *, OP_keymgmt_importkey,
 364                     (void *provctx, const OSSL_PARAM params[]))
 365 OSSL_CORE_MAKE_FUNC(void *, OP_keymgmt_genkey,
 366                     (void *provctx,
 367                      void *domparams, const OSSL_PARAM genkeyparams[]))
 368 OSSL_CORE_MAKE_FUNC(void *, OP_keymgmt_loadkey,
 369                     (void *provctx, void *id, size_t idlen))
 370 OSSL_CORE_MAKE_FUNC(void, OP_keymgmt_freekey, (void *key))
 371
 372 /* Key export */
 373 # define OSSL_FUNC_KEYMGMT_EXPORTKEY               14
 374 OSSL_CORE_MAKE_FUNC(int, OP_keymgmt_exportkey,
 375                     (void *key, OSSL_PARAM params[]))
 376
 377 /* Key discovery */
 378 # define OSSL_FUNC_KEYMGMT_IMPORTKEY_TYPES         15
 379 # define OSSL_FUNC_KEYMGMT_EXPORTKEY_TYPES         16
 380 OSSL_CORE_MAKE_FUNC(const OSSL_PARAM *, OP_keymgmt_importkey_types, (void))
 381 OSSL_CORE_MAKE_FUNC(const OSSL_PARAM *, OP_keymgmt_exportkey_types, (void))
 382
 383 /* Key Exchange */
 384
 385 # define OSSL_FUNC_KEYEXCH_NEWCTX                      1
 386 # define OSSL_FUNC_KEYEXCH_INIT                        2
 387 # define OSSL_FUNC_KEYEXCH_DERIVE                      3
 388 # define OSSL_FUNC_KEYEXCH_SET_PEER                    4
 389 # define OSSL_FUNC_KEYEXCH_FREECTX                     5
 390 # define OSSL_FUNC_KEYEXCH_DUPCTX                      6
 391 # define OSSL_FUNC_KEYEXCH_SET_PARAMS                  7
 392
 393 OSSL_CORE_MAKE_FUNC(void *, OP_keyexch_newctx, (void *provctx))
 394 OSSL_CORE_MAKE_FUNC(int, OP_keyexch_init, (void *ctx, void *provkey))
 395 OSSL_CORE_MAKE_FUNC(int, OP_keyexch_derive, (void *ctx,  unsigned char *secret,
 396                                              size_t *secretlen, size_t outlen))
 397 OSSL_CORE_MAKE_FUNC(int, OP_keyexch_set_peer, (void *ctx, void *provkey))
 398 OSSL_CORE_MAKE_FUNC(void, OP_keyexch_freectx, (void *ctx))
 399 OSSL_CORE_MAKE_FUNC(void *, OP_keyexch_dupctx, (void *ctx))
 400 OSSL_CORE_MAKE_FUNC(int, OP_keyexch_set_params, (void *ctx,
 401                                                  const OSSL_PARAM params[]))
 402
 403 # ifdef __cplusplus
 404 }
 405 # endif
 406
 407 #endif