providers/implementations/keymgmt/mac_legacy_kmgmt.c

   1 /*
   2  * Copyright 2020-2021 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 /* We need to use some engine deprecated APIs */
  11 #define OPENSSL_SUPPRESS_DEPRECATED
  12
  13 #include <string.h>
  14 #include <openssl/core_dispatch.h>
  15 #include <openssl/core_names.h>
  16 #include <openssl/params.h>
  17 #include <openssl/err.h>
  18 #include <openssl/evp.h>
  19 #include <openssl/proverr.h>
  20 #include <openssl/param_build.h>
  21 #ifndef FIPS_MODULE
  22 # include <openssl/engine.h>
  23 #endif
  24 #include "internal/param_build_set.h"
  25 #include "prov/implementations.h"
  26 #include "prov/providercommon.h"
  27 #include "prov/provider_ctx.h"
  28 #include "prov/macsignature.h"
  29 #include "internal/e_os.h" /* strcasecmp */
  30
  31 static OSSL_FUNC_keymgmt_new_fn mac_new;
  32 static OSSL_FUNC_keymgmt_free_fn mac_free;
  33 static OSSL_FUNC_keymgmt_gen_init_fn mac_gen_init;
  34 static OSSL_FUNC_keymgmt_gen_fn mac_gen;
  35 static OSSL_FUNC_keymgmt_gen_cleanup_fn mac_gen_cleanup;
  36 static OSSL_FUNC_keymgmt_gen_set_params_fn mac_gen_set_params;
  37 static OSSL_FUNC_keymgmt_gen_settable_params_fn mac_gen_settable_params;
  38 static OSSL_FUNC_keymgmt_get_params_fn mac_get_params;
  39 static OSSL_FUNC_keymgmt_gettable_params_fn mac_gettable_params;
  40 static OSSL_FUNC_keymgmt_set_params_fn mac_set_params;
  41 static OSSL_FUNC_keymgmt_settable_params_fn mac_settable_params;
  42 static OSSL_FUNC_keymgmt_has_fn mac_has;
  43 static OSSL_FUNC_keymgmt_match_fn mac_match;
  44 static OSSL_FUNC_keymgmt_import_fn mac_import;
  45 static OSSL_FUNC_keymgmt_import_types_fn mac_imexport_types;
  46 static OSSL_FUNC_keymgmt_export_fn mac_export;
  47 static OSSL_FUNC_keymgmt_export_types_fn mac_imexport_types;
  48
  49 static OSSL_FUNC_keymgmt_new_fn mac_new_cmac;
  50 static OSSL_FUNC_keymgmt_gettable_params_fn cmac_gettable_params;
  51 static OSSL_FUNC_keymgmt_import_types_fn cmac_imexport_types;
  52 static OSSL_FUNC_keymgmt_export_types_fn cmac_imexport_types;
  53 static OSSL_FUNC_keymgmt_gen_init_fn cmac_gen_init;
  54 static OSSL_FUNC_keymgmt_gen_set_params_fn cmac_gen_set_params;
  55 static OSSL_FUNC_keymgmt_gen_settable_params_fn cmac_gen_settable_params;
  56
  57 struct mac_gen_ctx {
  58     OSSL_LIB_CTX *libctx;
  59     int selection;
  60     unsigned char *priv_key;
  61     size_t priv_key_len;
  62     PROV_CIPHER cipher;
  63 };
  64
  65 MAC_KEY *ossl_mac_key_new(OSSL_LIB_CTX *libctx, int cmac)
  66 {
  67     MAC_KEY *mackey;
  68
  69     if (!ossl_prov_is_running())
  70         return NULL;
  71
  72     mackey = OPENSSL_zalloc(sizeof(*mackey));
  73     if (mackey == NULL)
  74         return NULL;
  75
  76     mackey->lock = CRYPTO_THREAD_lock_new();
  77     if (mackey->lock == NULL) {
  78         OPENSSL_free(mackey);
  79         return NULL;
  80     }
  81     mackey->libctx = libctx;
  82     mackey->refcnt = 1;
  83     mackey->cmac = cmac;
  84
  85     return mackey;
  86 }
  87
  88 void ossl_mac_key_free(MAC_KEY *mackey)
  89 {
  90     int ref = 0;
  91
  92     if (mackey == NULL)
  93         return;
  94
  95     CRYPTO_DOWN_REF(&mackey->refcnt, &ref, mackey->lock);
  96     if (ref > 0)
  97         return;
  98
  99     OPENSSL_secure_clear_free(mackey->priv_key, mackey->priv_key_len);
 100     OPENSSL_free(mackey->properties);
 101     ossl_prov_cipher_reset(&mackey->cipher);
 102     CRYPTO_THREAD_lock_free(mackey->lock);
 103     OPENSSL_free(mackey);
 104 }
 105
 106 int ossl_mac_key_up_ref(MAC_KEY *mackey)
 107 {
 108     int ref = 0;
 109
 110     /* This is effectively doing a new operation on the MAC_KEY and should be
 111      * adequately guarded again modules' error states.  However, both current
 112      * calls here are guarded properly in signature/mac_legacy.c.  Thus, it
 113      * could be removed here.  The concern is that something in the future
 114      * might call this function without adequate guards.  It's a cheap call,
 115      * it seems best to leave it even though it is currently redundant.
 116      */
 117     if (!ossl_prov_is_running())
 118         return 0;
 119
 120     CRYPTO_UP_REF(&mackey->refcnt, &ref, mackey->lock);
 121     return 1;
 122 }
 123
 124 static void *mac_new(void *provctx)
 125 {
 126     return ossl_mac_key_new(PROV_LIBCTX_OF(provctx), 0);
 127 }
 128
 129 static void *mac_new_cmac(void *provctx)
 130 {
 131     return ossl_mac_key_new(PROV_LIBCTX_OF(provctx), 1);
 132 }
 133
 134 static void mac_free(void *mackey)
 135 {
 136     ossl_mac_key_free(mackey);
 137 }
 138
 139 static int mac_has(const void *keydata, int selection)
 140 {
 141     const MAC_KEY *key = keydata;
 142     int ok = 0;
 143
 144     if (ossl_prov_is_running() && key != NULL) {
 145         /*
 146          * MAC keys always have all the parameters they need (i.e. none).
 147          * Therefore we always return with 1, if asked about parameters.
 148          * Similarly for public keys.
 149          */
 150         ok = 1;
 151
 152         if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
 153             ok = key->priv_key != NULL;
 154     }
 155     return ok;
 156 }
 157
 158 static int mac_match(const void *keydata1, const void *keydata2, int selection)
 159 {
 160     const MAC_KEY *key1 = keydata1;
 161     const MAC_KEY *key2 = keydata2;
 162     int ok = 1;
 163
 164     if (!ossl_prov_is_running())
 165         return 0;
 166
 167     if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0) {
 168         if ((key1->priv_key == NULL && key2->priv_key != NULL)
 169                 || (key1->priv_key != NULL && key2->priv_key == NULL)
 170                 || key1->priv_key_len != key2->priv_key_len
 171                 || (key1->cipher.cipher == NULL && key2->cipher.cipher != NULL)
 172                 || (key1->cipher.cipher != NULL && key2->cipher.cipher == NULL))
 173             ok = 0;
 174         else
 175             ok = ok && (key1->priv_key == NULL /* implies key2->privkey == NULL */
 176                         || CRYPTO_memcmp(key1->priv_key, key2->priv_key,
 177                                          key1->priv_key_len) == 0);
 178         if (key1->cipher.cipher != NULL)
 179             ok = ok && EVP_CIPHER_is_a(key1->cipher.cipher,
 180                                        EVP_CIPHER_get0_name(key2->cipher.cipher));
 181     }
 182     return ok;
 183 }
 184
 185 static int mac_key_fromdata(MAC_KEY *key, const OSSL_PARAM params[])
 186 {
 187     const OSSL_PARAM *p;
 188
 189     p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PRIV_KEY);
 190     if (p != NULL) {
 191         if (p->data_type != OSSL_PARAM_OCTET_STRING) {
 192             ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
 193             return 0;
 194         }
 195         OPENSSL_secure_clear_free(key->priv_key, key->priv_key_len);
 196         /* allocate at least one byte to distinguish empty key from no key set */
 197         key->priv_key = OPENSSL_secure_malloc(p->data_size > 0 ? p->data_size : 1);
 198         if (key->priv_key == NULL) {
 199             ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
 200             return 0;
 201         }
 202         memcpy(key->priv_key, p->data, p->data_size);
 203         key->priv_key_len = p->data_size;
 204     }
 205
 206     p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PROPERTIES);
 207     if (p != NULL) {
 208         if (p->data_type != OSSL_PARAM_UTF8_STRING) {
 209             ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
 210             return 0;
 211         }
 212         OPENSSL_free(key->properties);
 213         key->properties = OPENSSL_strdup(p->data);
 214         if (key->properties == NULL) {
 215             ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
 216             return 0;
 217         }
 218     }
 219
 220     if (key->cmac && !ossl_prov_cipher_load_from_params(&key->cipher, params,
 221                                                         key->libctx)) {
 222         ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
 223         return 0;
 224     }
 225
 226     if (key->priv_key != NULL)
 227         return 1;
 228
 229     return 0;
 230 }
 231
 232 static int mac_import(void *keydata, int selection, const OSSL_PARAM params[])
 233 {
 234     MAC_KEY *key = keydata;
 235
 236     if (!ossl_prov_is_running() || key == NULL)
 237         return 0;
 238
 239     if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) == 0)
 240         return 0;
 241
 242     return mac_key_fromdata(key, params);
 243 }
 244
 245 static int key_to_params(MAC_KEY *key, OSSL_PARAM_BLD *tmpl,
 246                          OSSL_PARAM params[])
 247 {
 248     if (key == NULL)
 249         return 0;
 250
 251     if (key->priv_key != NULL
 252         && !ossl_param_build_set_octet_string(tmpl, params,
 253                                               OSSL_PKEY_PARAM_PRIV_KEY,
 254                                               key->priv_key, key->priv_key_len))
 255         return 0;
 256
 257     if (key->cipher.cipher != NULL
 258         && !ossl_param_build_set_utf8_string(tmpl, params,
 259                                              OSSL_PKEY_PARAM_CIPHER,
 260                                              EVP_CIPHER_get0_name(key->cipher.cipher)))
 261         return 0;
 262
 263 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 264     if (key->cipher.engine != NULL
 265         && !ossl_param_build_set_utf8_string(tmpl, params,
 266                                              OSSL_PKEY_PARAM_ENGINE,
 267                                              ENGINE_get_id(key->cipher.engine)))
 268         return 0;
 269 #endif
 270
 271     return 1;
 272 }
 273
 274 static int mac_export(void *keydata, int selection, OSSL_CALLBACK *param_cb,
 275                       void *cbarg)
 276 {
 277     MAC_KEY *key = keydata;
 278     OSSL_PARAM_BLD *tmpl;
 279     OSSL_PARAM *params = NULL;
 280     int ret = 0;
 281
 282     if (!ossl_prov_is_running() || key == NULL)
 283         return 0;
 284
 285     tmpl = OSSL_PARAM_BLD_new();
 286     if (tmpl == NULL)
 287         return 0;
 288
 289     if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0
 290          && !key_to_params(key, tmpl, NULL))
 291         goto err;
 292
 293     params = OSSL_PARAM_BLD_to_param(tmpl);
 294     if (params == NULL)
 295         goto err;
 296
 297     ret = param_cb(params, cbarg);
 298     OSSL_PARAM_free(params);
 299 err:
 300     OSSL_PARAM_BLD_free(tmpl);
 301     return ret;
 302 }
 303
 304 static const OSSL_PARAM mac_key_types[] = {
 305     OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
 306     OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_PROPERTIES, NULL, 0),
 307     OSSL_PARAM_END
 308 };
 309 static const OSSL_PARAM *mac_imexport_types(int selection)
 310 {
 311     if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
 312         return mac_key_types;
 313     return NULL;
 314 }
 315
 316 static const OSSL_PARAM cmac_key_types[] = {
 317     OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
 318     OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_CIPHER, NULL, 0),
 319     OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_ENGINE, NULL, 0),
 320     OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_PROPERTIES, NULL, 0),
 321     OSSL_PARAM_END
 322 };
 323 static const OSSL_PARAM *cmac_imexport_types(int selection)
 324 {
 325     if ((selection & OSSL_KEYMGMT_SELECT_PRIVATE_KEY) != 0)
 326         return cmac_key_types;
 327     return NULL;
 328 }
 329
 330 static int mac_get_params(void *key, OSSL_PARAM params[])
 331 {
 332     return key_to_params(key, NULL, params);
 333 }
 334
 335 static const OSSL_PARAM *mac_gettable_params(void *provctx)
 336 {
 337     static const OSSL_PARAM gettable_params[] = {
 338         OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
 339         OSSL_PARAM_END
 340     };
 341     return gettable_params;
 342 }
 343
 344 static const OSSL_PARAM *cmac_gettable_params(void *provctx)
 345 {
 346     static const OSSL_PARAM gettable_params[] = {
 347         OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
 348         OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_CIPHER, NULL, 0),
 349         OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_ENGINE, NULL, 0),
 350         OSSL_PARAM_END
 351     };
 352     return gettable_params;
 353 }
 354
 355 static int mac_set_params(void *keydata, const OSSL_PARAM params[])
 356 {
 357     MAC_KEY *key = keydata;
 358     const OSSL_PARAM *p;
 359
 360     if (key == NULL)
 361         return 0;
 362
 363     p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PRIV_KEY);
 364     if (p != NULL)
 365         return mac_key_fromdata(key, params);
 366
 367     return 1;
 368 }
 369
 370 static const OSSL_PARAM *mac_settable_params(void *provctx)
 371 {
 372     static const OSSL_PARAM settable_params[] = {
 373         OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
 374         OSSL_PARAM_END
 375     };
 376     return settable_params;
 377 }
 378
 379 static void *mac_gen_init_common(void *provctx, int selection)
 380 {
 381     OSSL_LIB_CTX *libctx = PROV_LIBCTX_OF(provctx);
 382     struct mac_gen_ctx *gctx = NULL;
 383
 384     if (!ossl_prov_is_running())
 385         return NULL;
 386
 387     if ((gctx = OPENSSL_zalloc(sizeof(*gctx))) != NULL) {
 388         gctx->libctx = libctx;
 389         gctx->selection = selection;
 390     }
 391     return gctx;
 392 }
 393
 394 static void *mac_gen_init(void *provctx, int selection,
 395                           const OSSL_PARAM params[])
 396 {
 397     struct mac_gen_ctx *gctx = mac_gen_init_common(provctx, selection);
 398
 399     if (gctx != NULL && !mac_gen_set_params(gctx, params)) {
 400         OPENSSL_free(gctx);
 401         gctx = NULL;
 402     }
 403     return gctx;
 404 }
 405
 406 static void *cmac_gen_init(void *provctx, int selection,
 407                            const OSSL_PARAM params[])
 408 {
 409     struct mac_gen_ctx *gctx = mac_gen_init_common(provctx, selection);
 410
 411     if (gctx != NULL && !cmac_gen_set_params(gctx, params)) {
 412         OPENSSL_free(gctx);
 413         gctx = NULL;
 414     }
 415     return gctx;
 416 }
 417
 418 static int mac_gen_set_params(void *genctx, const OSSL_PARAM params[])
 419 {
 420     struct mac_gen_ctx *gctx = genctx;
 421     const OSSL_PARAM *p;
 422
 423     if (gctx == NULL)
 424         return 0;
 425
 426     p = OSSL_PARAM_locate_const(params, OSSL_PKEY_PARAM_PRIV_KEY);
 427     if (p != NULL) {
 428         if (p->data_type != OSSL_PARAM_OCTET_STRING) {
 429             ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
 430             return 0;
 431         }
 432         gctx->priv_key = OPENSSL_secure_malloc(p->data_size);
 433         if (gctx->priv_key == NULL) {
 434             ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
 435             return 0;
 436         }
 437         memcpy(gctx->priv_key, p->data, p->data_size);
 438         gctx->priv_key_len = p->data_size;
 439     }
 440
 441     return 1;
 442 }
 443
 444 static int cmac_gen_set_params(void *genctx, const OSSL_PARAM params[])
 445 {
 446     struct mac_gen_ctx *gctx = genctx;
 447
 448     if (!mac_gen_set_params(genctx, params))
 449         return 0;
 450
 451     if (!ossl_prov_cipher_load_from_params(&gctx->cipher, params,
 452                                            gctx->libctx)) {
 453         ERR_raise(ERR_LIB_PROV, ERR_R_PASSED_INVALID_ARGUMENT);
 454         return 0;
 455     }
 456
 457     return 1;
 458 }
 459
 460 static const OSSL_PARAM *mac_gen_settable_params(ossl_unused void *genctx,
 461                                                  ossl_unused void *provctx)
 462 {
 463     static OSSL_PARAM settable[] = {
 464         OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
 465         OSSL_PARAM_END
 466     };
 467     return settable;
 468 }
 469
 470 static const OSSL_PARAM *cmac_gen_settable_params(ossl_unused void *genctx,
 471                                                   ossl_unused void *provctx)
 472 {
 473     static OSSL_PARAM settable[] = {
 474         OSSL_PARAM_octet_string(OSSL_PKEY_PARAM_PRIV_KEY, NULL, 0),
 475         OSSL_PARAM_utf8_string(OSSL_PKEY_PARAM_CIPHER, NULL, 0),
 476         OSSL_PARAM_END
 477     };
 478     return settable;
 479 }
 480
 481 static void *mac_gen(void *genctx, OSSL_CALLBACK *cb, void *cbarg)
 482 {
 483     struct mac_gen_ctx *gctx = genctx;
 484     MAC_KEY *key;
 485
 486     if (!ossl_prov_is_running() || gctx == NULL)
 487         return NULL;
 488
 489     if ((key = ossl_mac_key_new(gctx->libctx, 0)) == NULL) {
 490         ERR_raise(ERR_LIB_PROV, ERR_R_MALLOC_FAILURE);
 491         return NULL;
 492     }
 493
 494     /* If we're doing parameter generation then we just return a blank key */
 495     if ((gctx->selection & OSSL_KEYMGMT_SELECT_KEYPAIR) == 0)
 496         return key;
 497
 498     if (gctx->priv_key == NULL) {
 499         ERR_raise(ERR_LIB_PROV, PROV_R_INVALID_KEY);
 500         ossl_mac_key_free(key);
 501         return NULL;
 502     }
 503
 504     /*
 505      * This is horrible but required for backwards compatibility. We don't
 506      * actually do real key generation at all. We simply copy the key that was
 507      * previously set in the gctx. Hopefully at some point in the future all
 508      * of this can be removed and we will only support the EVP_KDF APIs.
 509      */
 510     if (!ossl_prov_cipher_copy(&key->cipher, &gctx->cipher)) {
 511         ossl_mac_key_free(key);
 512         ERR_raise(ERR_LIB_PROV, ERR_R_INTERNAL_ERROR);
 513         return NULL;
 514     }
 515     ossl_prov_cipher_reset(&gctx->cipher);
 516     key->priv_key = gctx->priv_key;
 517     key->priv_key_len = gctx->priv_key_len;
 518     gctx->priv_key_len = 0;
 519     gctx->priv_key = NULL;
 520
 521     return key;
 522 }
 523
 524 static void mac_gen_cleanup(void *genctx)
 525 {
 526     struct mac_gen_ctx *gctx = genctx;
 527
 528     OPENSSL_secure_clear_free(gctx->priv_key, gctx->priv_key_len);
 529     ossl_prov_cipher_reset(&gctx->cipher);
 530     OPENSSL_free(gctx);
 531 }
 532
 533 const OSSL_DISPATCH ossl_mac_legacy_keymgmt_functions[] = {
 534     { OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))mac_new },
 535     { OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))mac_free },
 536     { OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))mac_get_params },
 537     { OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))mac_gettable_params },
 538     { OSSL_FUNC_KEYMGMT_SET_PARAMS, (void (*) (void))mac_set_params },
 539     { OSSL_FUNC_KEYMGMT_SETTABLE_PARAMS, (void (*) (void))mac_settable_params },
 540     { OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))mac_has },
 541     { OSSL_FUNC_KEYMGMT_MATCH, (void (*)(void))mac_match },
 542     { OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))mac_import },
 543     { OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))mac_imexport_types },
 544     { OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))mac_export },
 545     { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))mac_imexport_types },
 546     { OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))mac_gen_init },
 547     { OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS, (void (*)(void))mac_gen_set_params },
 548     { OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS,
 549         (void (*)(void))mac_gen_settable_params },
 550     { OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))mac_gen },
 551     { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))mac_gen_cleanup },
 552     { 0, NULL }
 553 };
 554
 555 const OSSL_DISPATCH ossl_cmac_legacy_keymgmt_functions[] = {
 556     { OSSL_FUNC_KEYMGMT_NEW, (void (*)(void))mac_new_cmac },
 557     { OSSL_FUNC_KEYMGMT_FREE, (void (*)(void))mac_free },
 558     { OSSL_FUNC_KEYMGMT_GET_PARAMS, (void (*) (void))mac_get_params },
 559     { OSSL_FUNC_KEYMGMT_GETTABLE_PARAMS, (void (*) (void))cmac_gettable_params },
 560     { OSSL_FUNC_KEYMGMT_SET_PARAMS, (void (*) (void))mac_set_params },
 561     { OSSL_FUNC_KEYMGMT_SETTABLE_PARAMS, (void (*) (void))mac_settable_params },
 562     { OSSL_FUNC_KEYMGMT_HAS, (void (*)(void))mac_has },
 563     { OSSL_FUNC_KEYMGMT_MATCH, (void (*)(void))mac_match },
 564     { OSSL_FUNC_KEYMGMT_IMPORT, (void (*)(void))mac_import },
 565     { OSSL_FUNC_KEYMGMT_IMPORT_TYPES, (void (*)(void))cmac_imexport_types },
 566     { OSSL_FUNC_KEYMGMT_EXPORT, (void (*)(void))mac_export },
 567     { OSSL_FUNC_KEYMGMT_EXPORT_TYPES, (void (*)(void))cmac_imexport_types },
 568     { OSSL_FUNC_KEYMGMT_GEN_INIT, (void (*)(void))cmac_gen_init },
 569     { OSSL_FUNC_KEYMGMT_GEN_SET_PARAMS, (void (*)(void))cmac_gen_set_params },
 570     { OSSL_FUNC_KEYMGMT_GEN_SETTABLE_PARAMS,
 571         (void (*)(void))cmac_gen_settable_params },
 572     { OSSL_FUNC_KEYMGMT_GEN, (void (*)(void))mac_gen },
 573     { OSSL_FUNC_KEYMGMT_GEN_CLEANUP, (void (*)(void))mac_gen_cleanup },
 574     { 0, NULL }
 575 };
 576