crypto/evp/pmeth_lib.c

   1 /*
   2  * Copyright 2006-2021 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 /*
  11  * Low level key APIs (DH etc) are deprecated for public use, but still ok for
  12  * internal use.
  13  */
  14 #include "internal/deprecated.h"
  15
  16 #include <stdio.h>
  17 #include <stdlib.h>
  18 #ifndef FIPS_MODULE
  19 # include <openssl/engine.h>
  20 #endif
  21 #include <openssl/evp.h>
  22 #include <openssl/core_names.h>
  23 #include <openssl/dh.h>
  24 #include <openssl/rsa.h>
  25 #include <openssl/kdf.h>
  26 #include "internal/cryptlib.h"
  27 #ifndef FIPS_MODULE
  28 # include "crypto/asn1.h"
  29 #endif
  30 #include "crypto/evp.h"
  31 #include "crypto/dh.h"
  32 #include "crypto/ec.h"
  33 #include "internal/ffc.h"
  34 #include "internal/numbers.h"
  35 #include "internal/provider.h"
  36 #include "evp_local.h"
  37
  38 #ifndef FIPS_MODULE
  39
  40 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
  41                                           int keytype, int optype,
  42                                           int cmd, const char *name,
  43                                           const void *data, size_t data_len);
  44 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
  45                                           int cmd, const char *name);
  46 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx);
  47
  48 typedef const EVP_PKEY_METHOD *(*pmeth_fn)(void);
  49 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
  50
  51 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
  52
  53 /* This array needs to be in order of NIDs */
  54 static pmeth_fn standard_methods[] = {
  55     ossl_rsa_pkey_method,
  56 # ifndef OPENSSL_NO_DH
  57     ossl_dh_pkey_method,
  58 # endif
  59 # ifndef OPENSSL_NO_DSA
  60     ossl_dsa_pkey_method,
  61 # endif
  62 # ifndef OPENSSL_NO_EC
  63     ossl_ec_pkey_method,
  64 # endif
  65     ossl_rsa_pss_pkey_method,
  66 # ifndef OPENSSL_NO_DH
  67     ossl_dhx_pkey_method,
  68 # endif
  69 # ifndef OPENSSL_NO_EC
  70     ossl_ecx25519_pkey_method,
  71     ossl_ecx448_pkey_method,
  72 # endif
  73 # ifndef OPENSSL_NO_EC
  74     ossl_ed25519_pkey_method,
  75     ossl_ed448_pkey_method,
  76 # endif
  77 };
  78
  79 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  80
  81 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
  82 {
  83     return ((*a)->pkey_id - ((**b)())->pkey_id);
  84 }
  85
  86 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  87
  88 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  89                      const EVP_PKEY_METHOD *const *b)
  90 {
  91     return ((*a)->pkey_id - (*b)->pkey_id);
  92 }
  93
  94 static const EVP_PKEY_METHOD *evp_pkey_meth_find_added_by_application(int type)
  95 {
  96     if (app_pkey_methods != NULL) {
  97         int idx;
  98         EVP_PKEY_METHOD tmp;
  99
 100         tmp.pkey_id = type;
 101         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
 102         if (idx >= 0)
 103             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 104     }
 105     return NULL;
 106 }
 107
 108 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
 109 {
 110     pmeth_fn *ret;
 111     EVP_PKEY_METHOD tmp;
 112     const EVP_PKEY_METHOD *t;
 113
 114     if ((t = evp_pkey_meth_find_added_by_application(type)) != NULL)
 115         return t;
 116
 117     tmp.pkey_id = type;
 118     t = &tmp;
 119     ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
 120                                  OSSL_NELEM(standard_methods));
 121     if (ret == NULL || *ret == NULL)
 122         return NULL;
 123     return (**ret)();
 124 }
 125
 126 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 127 {
 128     EVP_PKEY_METHOD *pmeth;
 129
 130     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 131     if (pmeth == NULL) {
 132         ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 133         return NULL;
 134     }
 135
 136     pmeth->pkey_id = id;
 137     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 138     return pmeth;
 139 }
 140
 141 static void help_get_legacy_alg_type_from_keymgmt(const char *keytype,
 142                                                   void *arg)
 143 {
 144     int *type = arg;
 145
 146     if (*type == NID_undef)
 147         *type = evp_pkey_name2type(keytype);
 148 }
 149
 150 static int get_legacy_alg_type_from_keymgmt(const EVP_KEYMGMT *keymgmt)
 151 {
 152     int type = NID_undef;
 153
 154     EVP_KEYMGMT_names_do_all(keymgmt, help_get_legacy_alg_type_from_keymgmt,
 155                              &type);
 156     return type;
 157 }
 158 #endif /* FIPS_MODULE */
 159
 160 int evp_pkey_ctx_state(const EVP_PKEY_CTX *ctx)
 161 {
 162     if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
 163         return EVP_PKEY_STATE_UNKNOWN;
 164
 165     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 166          && ctx->op.kex.algctx != NULL)
 167         || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 168             && ctx->op.sig.algctx != NULL)
 169         || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 170             && ctx->op.ciph.algctx != NULL)
 171         || (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 172             && ctx->op.keymgmt.genctx != NULL)
 173         || (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 174             && ctx->op.encap.algctx != NULL))
 175         return EVP_PKEY_STATE_PROVIDER;
 176
 177     return EVP_PKEY_STATE_LEGACY;
 178 }
 179
 180 static EVP_PKEY_CTX *int_ctx_new(OSSL_LIB_CTX *libctx,
 181                                  EVP_PKEY *pkey, ENGINE *e,
 182                                  const char *keytype, const char *propquery,
 183                                  int id)
 184
 185 {
 186     EVP_PKEY_CTX *ret = NULL;
 187     const EVP_PKEY_METHOD *pmeth = NULL, *app_pmeth = NULL;
 188     EVP_KEYMGMT *keymgmt = NULL;
 189
 190     /* Code below to be removed when legacy support is dropped. */
 191     /* BEGIN legacy */
 192     if (id == -1) {
 193         if (pkey != NULL && !evp_pkey_is_provided(pkey)) {
 194             id = pkey->type;
 195         } else {
 196             if (pkey != NULL) {
 197                 /* Must be provided if we get here */
 198                 keytype = EVP_KEYMGMT_get0_name(pkey->keymgmt);
 199             }
 200 #ifndef FIPS_MODULE
 201             if (keytype != NULL) {
 202                 id = evp_pkey_name2type(keytype);
 203                 if (id == NID_undef)
 204                     id = -1;
 205             }
 206 #endif
 207         }
 208     }
 209     /* If no ID was found here, we can only resort to find a keymgmt */
 210     if (id == -1) {
 211 #ifndef FIPS_MODULE
 212         /* Using engine with a key without id will not work */
 213         if (e != NULL) {
 214             ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
 215             return NULL;
 216         }
 217 #endif
 218         goto common;
 219     }
 220
 221 #ifndef FIPS_MODULE
 222     /*
 223      * Here, we extract what information we can for the purpose of
 224      * supporting usage with implementations from providers, to make
 225      * for a smooth transition from legacy stuff to provider based stuff.
 226      *
 227      * If an engine is given, this is entirely legacy, and we should not
 228      * pretend anything else, so we clear the name.
 229      */
 230     if (e != NULL)
 231         keytype = NULL;
 232     if (e == NULL && (pkey == NULL || pkey->foreign == 0))
 233         keytype = OBJ_nid2sn(id);
 234
 235 # ifndef OPENSSL_NO_ENGINE
 236     if (e == NULL && pkey != NULL)
 237         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 238     /* Try to find an ENGINE which implements this method */
 239     if (e != NULL) {
 240         if (!ENGINE_init(e)) {
 241             ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
 242             return NULL;
 243         }
 244     } else {
 245         e = ENGINE_get_pkey_meth_engine(id);
 246     }
 247
 248     /*
 249      * If an ENGINE handled this method look it up. Otherwise use internal
 250      * tables.
 251      */
 252     if (e != NULL)
 253         pmeth = ENGINE_get_pkey_meth(e, id);
 254     else if (pkey != NULL && pkey->foreign)
 255         pmeth = EVP_PKEY_meth_find(id);
 256     else
 257 # endif
 258         app_pmeth = pmeth = evp_pkey_meth_find_added_by_application(id);
 259
 260     /* END legacy */
 261 #endif /* FIPS_MODULE */
 262  common:
 263     /*
 264      * If there's no engine and no app supplied pmeth and there's a name, we try
 265      * fetching a provider implementation.
 266      */
 267     if (e == NULL && app_pmeth == NULL && keytype != NULL) {
 268         keymgmt = EVP_KEYMGMT_fetch(libctx, keytype, propquery);
 269         if (keymgmt == NULL)
 270             return NULL;   /* EVP_KEYMGMT_fetch() recorded an error */
 271
 272 #ifndef FIPS_MODULE
 273         /*
 274          * Chase down the legacy NID, as that might be needed for diverse
 275          * purposes, such as ensure that EVP_PKEY_type() can return sensible
 276          * values. We go through all keymgmt names, because the keytype
 277          * that's passed to this function doesn't necessarily translate
 278          * directly.
 279          */
 280         if (keymgmt != NULL) {
 281             int tmp_id = get_legacy_alg_type_from_keymgmt(keymgmt);
 282
 283             if (tmp_id != NID_undef) {
 284                 if (id == -1) {
 285                     id = tmp_id;
 286                 } else {
 287                     /*
 288                      * It really really shouldn't differ.  If it still does,
 289                      * something is very wrong.
 290                      */
 291                     if (!ossl_assert(id == tmp_id)) {
 292                         ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
 293                         EVP_KEYMGMT_free(keymgmt);
 294                         return NULL;
 295                     }
 296                 }
 297             }
 298         }
 299 #endif
 300     }
 301
 302     if (pmeth == NULL && keymgmt == NULL) {
 303         ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
 304     } else {
 305         ret = OPENSSL_zalloc(sizeof(*ret));
 306         if (ret == NULL)
 307             ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 308     }
 309
 310 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 311     if ((ret == NULL || pmeth == NULL) && e != NULL)
 312         ENGINE_finish(e);
 313 #endif
 314
 315     if (ret == NULL) {
 316         EVP_KEYMGMT_free(keymgmt);
 317         return NULL;
 318     }
 319     if (propquery != NULL) {
 320         ret->propquery = OPENSSL_strdup(propquery);
 321         if (ret->propquery == NULL) {
 322             OPENSSL_free(ret);
 323             EVP_KEYMGMT_free(keymgmt);
 324             return NULL;
 325         }
 326     }
 327     ret->libctx = libctx;
 328     ret->keytype = keytype;
 329     ret->keymgmt = keymgmt;
 330     ret->legacy_keytype = id;
 331     ret->engine = e;
 332     ret->pmeth = pmeth;
 333     ret->operation = EVP_PKEY_OP_UNDEFINED;
 334     ret->pkey = pkey;
 335     if (pkey != NULL)
 336         EVP_PKEY_up_ref(pkey);
 337
 338     if (pmeth != NULL && pmeth->init != NULL) {
 339         if (pmeth->init(ret) <= 0) {
 340             ret->pmeth = NULL;
 341             EVP_PKEY_CTX_free(ret);
 342             return NULL;
 343         }
 344     }
 345
 346     return ret;
 347 }
 348
 349 /*- All methods below can also be used in FIPS_MODULE */
 350
 351 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OSSL_LIB_CTX *libctx,
 352                                          const char *name,
 353                                          const char *propquery)
 354 {
 355     return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
 356 }
 357
 358 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OSSL_LIB_CTX *libctx, EVP_PKEY *pkey,
 359                                          const char *propquery)
 360 {
 361     return int_ctx_new(libctx, pkey, NULL, NULL, propquery, -1);
 362 }
 363
 364 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
 365 {
 366     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 367         if (ctx->op.sig.algctx != NULL && ctx->op.sig.signature != NULL)
 368             ctx->op.sig.signature->freectx(ctx->op.sig.algctx);
 369         EVP_SIGNATURE_free(ctx->op.sig.signature);
 370         ctx->op.sig.algctx = NULL;
 371         ctx->op.sig.signature = NULL;
 372     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 373         if (ctx->op.kex.algctx != NULL && ctx->op.kex.exchange != NULL)
 374             ctx->op.kex.exchange->freectx(ctx->op.kex.algctx);
 375         EVP_KEYEXCH_free(ctx->op.kex.exchange);
 376         ctx->op.kex.algctx = NULL;
 377         ctx->op.kex.exchange = NULL;
 378     } else if (EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
 379         if (ctx->op.encap.algctx != NULL && ctx->op.encap.kem != NULL)
 380             ctx->op.encap.kem->freectx(ctx->op.encap.algctx);
 381         EVP_KEM_free(ctx->op.encap.kem);
 382         ctx->op.encap.algctx = NULL;
 383         ctx->op.encap.kem = NULL;
 384     }
 385     else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
 386         if (ctx->op.ciph.algctx != NULL && ctx->op.ciph.cipher != NULL)
 387             ctx->op.ciph.cipher->freectx(ctx->op.ciph.algctx);
 388         EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
 389         ctx->op.ciph.algctx = NULL;
 390         ctx->op.ciph.cipher = NULL;
 391     } else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
 392         if (ctx->op.keymgmt.genctx != NULL && ctx->keymgmt != NULL)
 393             evp_keymgmt_gen_cleanup(ctx->keymgmt, ctx->op.keymgmt.genctx);
 394     }
 395 }
 396
 397 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 398 {
 399     if (ctx == NULL)
 400         return;
 401     if (ctx->pmeth && ctx->pmeth->cleanup)
 402         ctx->pmeth->cleanup(ctx);
 403
 404     evp_pkey_ctx_free_old_ops(ctx);
 405 #ifndef FIPS_MODULE
 406     evp_pkey_ctx_free_all_cached_data(ctx);
 407 #endif
 408     EVP_KEYMGMT_free(ctx->keymgmt);
 409
 410     OPENSSL_free(ctx->propquery);
 411     EVP_PKEY_free(ctx->pkey);
 412     EVP_PKEY_free(ctx->peerkey);
 413 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 414     ENGINE_finish(ctx->engine);
 415 #endif
 416     BN_free(ctx->rsa_pubexp);
 417     OPENSSL_free(ctx);
 418 }
 419
 420 #ifndef FIPS_MODULE
 421
 422 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 423                              const EVP_PKEY_METHOD *meth)
 424 {
 425     if (ppkey_id)
 426         *ppkey_id = meth->pkey_id;
 427     if (pflags)
 428         *pflags = meth->flags;
 429 }
 430
 431 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 432 {
 433     int pkey_id = dst->pkey_id;
 434     int flags = dst->flags;
 435
 436     *dst = *src;
 437
 438     /* We only copy the function pointers so restore the other values */
 439     dst->pkey_id = pkey_id;
 440     dst->flags = flags;
 441 }
 442
 443 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 444 {
 445     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 446         OPENSSL_free(pmeth);
 447 }
 448
 449 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 450 {
 451     return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
 452 }
 453
 454 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 455 {
 456     return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
 457 }
 458
 459 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 460 {
 461     EVP_PKEY_CTX *rctx;
 462
 463 # ifndef OPENSSL_NO_ENGINE
 464     /* Make sure it's safe to copy a pkey context using an ENGINE */
 465     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 466         ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
 467         return 0;
 468     }
 469 # endif
 470     rctx = OPENSSL_zalloc(sizeof(*rctx));
 471     if (rctx == NULL) {
 472         ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 473         return NULL;
 474     }
 475
 476     if (pctx->pkey != NULL)
 477         EVP_PKEY_up_ref(pctx->pkey);
 478     rctx->pkey = pctx->pkey;
 479     rctx->operation = pctx->operation;
 480     rctx->libctx = pctx->libctx;
 481     rctx->keytype = pctx->keytype;
 482     rctx->propquery = NULL;
 483     if (pctx->propquery != NULL) {
 484         rctx->propquery = OPENSSL_strdup(pctx->propquery);
 485         if (rctx->propquery == NULL)
 486             goto err;
 487     }
 488     rctx->legacy_keytype = pctx->legacy_keytype;
 489
 490     if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
 491         if (pctx->op.kex.exchange != NULL) {
 492             rctx->op.kex.exchange = pctx->op.kex.exchange;
 493             if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange))
 494                 goto err;
 495         }
 496         if (pctx->op.kex.algctx != NULL) {
 497             if (!ossl_assert(pctx->op.kex.exchange != NULL))
 498                 goto err;
 499             rctx->op.kex.algctx
 500                 = pctx->op.kex.exchange->dupctx(pctx->op.kex.algctx);
 501             if (rctx->op.kex.algctx == NULL) {
 502                 EVP_KEYEXCH_free(rctx->op.kex.exchange);
 503                 goto err;
 504             }
 505             return rctx;
 506         }
 507     } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
 508         if (pctx->op.sig.signature != NULL) {
 509             rctx->op.sig.signature = pctx->op.sig.signature;
 510             if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature))
 511                 goto err;
 512         }
 513         if (pctx->op.sig.algctx != NULL) {
 514             if (!ossl_assert(pctx->op.sig.signature != NULL))
 515                 goto err;
 516             rctx->op.sig.algctx
 517                 = pctx->op.sig.signature->dupctx(pctx->op.sig.algctx);
 518             if (rctx->op.sig.algctx == NULL) {
 519                 EVP_SIGNATURE_free(rctx->op.sig.signature);
 520                 goto err;
 521             }
 522             return rctx;
 523         }
 524     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
 525         if (pctx->op.ciph.cipher != NULL) {
 526             rctx->op.ciph.cipher = pctx->op.ciph.cipher;
 527             if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher))
 528                 goto err;
 529         }
 530         if (pctx->op.ciph.algctx != NULL) {
 531             if (!ossl_assert(pctx->op.ciph.cipher != NULL))
 532                 goto err;
 533             rctx->op.ciph.algctx
 534                 = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.algctx);
 535             if (rctx->op.ciph.algctx == NULL) {
 536                 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
 537                 goto err;
 538             }
 539             return rctx;
 540         }
 541     } else if (EVP_PKEY_CTX_IS_KEM_OP(pctx)) {
 542         if (pctx->op.encap.kem != NULL) {
 543             rctx->op.encap.kem = pctx->op.encap.kem;
 544             if (!EVP_KEM_up_ref(rctx->op.encap.kem))
 545                 goto err;
 546         }
 547         if (pctx->op.encap.algctx != NULL) {
 548             if (!ossl_assert(pctx->op.encap.kem != NULL))
 549                 goto err;
 550             rctx->op.encap.algctx
 551                 = pctx->op.encap.kem->dupctx(pctx->op.encap.algctx);
 552             if (rctx->op.encap.algctx == NULL) {
 553                 EVP_KEM_free(rctx->op.encap.kem);
 554                 goto err;
 555             }
 556             return rctx;
 557         }
 558     } else if (EVP_PKEY_CTX_IS_GEN_OP(pctx)) {
 559         /* Not supported - This would need a gen_dupctx() to work */
 560         goto err;
 561     }
 562
 563     rctx->pmeth = pctx->pmeth;
 564 # ifndef OPENSSL_NO_ENGINE
 565     rctx->engine = pctx->engine;
 566 # endif
 567
 568     if (pctx->peerkey != NULL)
 569         EVP_PKEY_up_ref(pctx->peerkey);
 570     rctx->peerkey = pctx->peerkey;
 571
 572     if (pctx->pmeth == NULL) {
 573         if (rctx->operation == EVP_PKEY_OP_UNDEFINED) {
 574             EVP_KEYMGMT *tmp_keymgmt = pctx->keymgmt;
 575             void *provkey;
 576
 577             provkey = evp_pkey_export_to_provider(pctx->pkey, pctx->libctx,
 578                                                   &tmp_keymgmt, pctx->propquery);
 579             if (provkey == NULL)
 580                 goto err;
 581             if (!EVP_KEYMGMT_up_ref(tmp_keymgmt))
 582                 goto err;
 583             EVP_KEYMGMT_free(rctx->keymgmt);
 584             rctx->keymgmt = tmp_keymgmt;
 585             return rctx;
 586         }
 587     } else if (pctx->pmeth->copy(rctx, pctx) > 0) {
 588         return rctx;
 589     }
 590 err:
 591     rctx->pmeth = NULL;
 592     EVP_PKEY_CTX_free(rctx);
 593     return NULL;
 594 }
 595
 596 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 597 {
 598     if (app_pkey_methods == NULL) {
 599         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 600         if (app_pkey_methods == NULL){
 601             ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 602             return 0;
 603         }
 604     }
 605     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 606         ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 607         return 0;
 608     }
 609     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 610     return 1;
 611 }
 612
 613 void evp_app_cleanup_int(void)
 614 {
 615     if (app_pkey_methods != NULL)
 616         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 617 }
 618
 619 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 620 {
 621     const EVP_PKEY_METHOD *ret;
 622
 623     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 624
 625     return ret == NULL ? 0 : 1;
 626 }
 627
 628 size_t EVP_PKEY_meth_get_count(void)
 629 {
 630     size_t rv = OSSL_NELEM(standard_methods);
 631
 632     if (app_pkey_methods)
 633         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 634     return rv;
 635 }
 636
 637 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 638 {
 639     if (idx < OSSL_NELEM(standard_methods))
 640         return (standard_methods[idx])();
 641     if (app_pkey_methods == NULL)
 642         return NULL;
 643     idx -= OSSL_NELEM(standard_methods);
 644     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 645         return NULL;
 646     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 647 }
 648 #endif
 649
 650 int EVP_PKEY_CTX_is_a(EVP_PKEY_CTX *ctx, const char *keytype)
 651 {
 652 #ifndef FIPS_MODULE
 653     if (evp_pkey_ctx_is_legacy(ctx))
 654         return (ctx->pmeth->pkey_id == evp_pkey_name2type(keytype));
 655 #endif
 656     return EVP_KEYMGMT_is_a(ctx->keymgmt, keytype);
 657 }
 658
 659 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, const OSSL_PARAM *params)
 660 {
 661     switch (evp_pkey_ctx_state(ctx)) {
 662     case EVP_PKEY_STATE_PROVIDER:
 663         if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 664             && ctx->op.kex.exchange != NULL
 665             && ctx->op.kex.exchange->set_ctx_params != NULL)
 666             return
 667                 ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.algctx,
 668                                                      params);
 669         if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 670             && ctx->op.sig.signature != NULL
 671             && ctx->op.sig.signature->set_ctx_params != NULL)
 672             return
 673                 ctx->op.sig.signature->set_ctx_params(ctx->op.sig.algctx,
 674                                                       params);
 675         if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 676             && ctx->op.ciph.cipher != NULL
 677             && ctx->op.ciph.cipher->set_ctx_params != NULL)
 678             return
 679                 ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.algctx,
 680                                                     params);
 681         if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 682             && ctx->keymgmt != NULL
 683             && ctx->keymgmt->gen_set_params != NULL)
 684             return
 685                 evp_keymgmt_gen_set_params(ctx->keymgmt, ctx->op.keymgmt.genctx,
 686                                            params);
 687         if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 688             && ctx->op.encap.kem != NULL
 689             && ctx->op.encap.kem->set_ctx_params != NULL)
 690             return
 691                 ctx->op.encap.kem->set_ctx_params(ctx->op.encap.algctx,
 692                                                   params);
 693         break;
 694 #ifndef FIPS_MODULE
 695     case EVP_PKEY_STATE_UNKNOWN:
 696     case EVP_PKEY_STATE_LEGACY:
 697         return evp_pkey_ctx_set_params_to_ctrl(ctx, params);
 698 #endif
 699     }
 700     return 0;
 701 }
 702
 703 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 704 {
 705     switch (evp_pkey_ctx_state(ctx)) {
 706     case EVP_PKEY_STATE_PROVIDER:
 707         if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 708             && ctx->op.kex.exchange != NULL
 709             && ctx->op.kex.exchange->get_ctx_params != NULL)
 710             return
 711                 ctx->op.kex.exchange->get_ctx_params(ctx->op.kex.algctx,
 712                                                      params);
 713         if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 714             && ctx->op.sig.signature != NULL
 715             && ctx->op.sig.signature->get_ctx_params != NULL)
 716             return
 717                 ctx->op.sig.signature->get_ctx_params(ctx->op.sig.algctx,
 718                                                       params);
 719         if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 720             && ctx->op.ciph.cipher != NULL
 721             && ctx->op.ciph.cipher->get_ctx_params != NULL)
 722             return
 723                 ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.algctx,
 724                                                     params);
 725         if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 726             && ctx->op.encap.kem != NULL
 727             && ctx->op.encap.kem->get_ctx_params != NULL)
 728             return
 729                 ctx->op.encap.kem->get_ctx_params(ctx->op.encap.algctx,
 730                                                   params);
 731         break;
 732 #ifndef FIPS_MODULE
 733     case EVP_PKEY_STATE_UNKNOWN:
 734     case EVP_PKEY_STATE_LEGACY:
 735         return evp_pkey_ctx_get_params_to_ctrl(ctx, params);
 736 #endif
 737     }
 738     return 0;
 739 }
 740
 741 #ifndef FIPS_MODULE
 742 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(const EVP_PKEY_CTX *ctx)
 743 {
 744     void *provctx;
 745
 746     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 747             && ctx->op.kex.exchange != NULL
 748             && ctx->op.kex.exchange->gettable_ctx_params != NULL) {
 749         provctx = ossl_provider_ctx(EVP_KEYEXCH_get0_provider(ctx->op.kex.exchange));
 750         return ctx->op.kex.exchange->gettable_ctx_params(ctx->op.kex.algctx,
 751                                                          provctx);
 752     }
 753     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 754             && ctx->op.sig.signature != NULL
 755             && ctx->op.sig.signature->gettable_ctx_params != NULL) {
 756         provctx = ossl_provider_ctx(
 757                       EVP_SIGNATURE_get0_provider(ctx->op.sig.signature));
 758         return ctx->op.sig.signature->gettable_ctx_params(ctx->op.sig.algctx,
 759                                                           provctx);
 760     }
 761     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 762             && ctx->op.ciph.cipher != NULL
 763             && ctx->op.ciph.cipher->gettable_ctx_params != NULL) {
 764         provctx = ossl_provider_ctx(
 765                       EVP_ASYM_CIPHER_get0_provider(ctx->op.ciph.cipher));
 766         return ctx->op.ciph.cipher->gettable_ctx_params(ctx->op.ciph.algctx,
 767                                                         provctx);
 768     }
 769     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 770         && ctx->op.encap.kem != NULL
 771         && ctx->op.encap.kem->gettable_ctx_params != NULL) {
 772         provctx = ossl_provider_ctx(EVP_KEM_get0_provider(ctx->op.encap.kem));
 773         return ctx->op.encap.kem->gettable_ctx_params(ctx->op.encap.algctx,
 774                                                       provctx);
 775     }
 776     return NULL;
 777 }
 778
 779 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(const EVP_PKEY_CTX *ctx)
 780 {
 781     void *provctx;
 782
 783     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 784             && ctx->op.kex.exchange != NULL
 785             && ctx->op.kex.exchange->settable_ctx_params != NULL) {
 786         provctx = ossl_provider_ctx(EVP_KEYEXCH_get0_provider(ctx->op.kex.exchange));
 787         return ctx->op.kex.exchange->settable_ctx_params(ctx->op.kex.algctx,
 788                                                          provctx);
 789     }
 790     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 791             && ctx->op.sig.signature != NULL
 792             && ctx->op.sig.signature->settable_ctx_params != NULL) {
 793         provctx = ossl_provider_ctx(
 794                       EVP_SIGNATURE_get0_provider(ctx->op.sig.signature));
 795         return ctx->op.sig.signature->settable_ctx_params(ctx->op.sig.algctx,
 796                                                           provctx);
 797     }
 798     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 799             && ctx->op.ciph.cipher != NULL
 800             && ctx->op.ciph.cipher->settable_ctx_params != NULL) {
 801         provctx = ossl_provider_ctx(
 802                       EVP_ASYM_CIPHER_get0_provider(ctx->op.ciph.cipher));
 803         return ctx->op.ciph.cipher->settable_ctx_params(ctx->op.ciph.algctx,
 804                                                         provctx);
 805     }
 806     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 807             && ctx->keymgmt != NULL
 808             && ctx->keymgmt->gen_settable_params != NULL) {
 809         provctx = ossl_provider_ctx(EVP_KEYMGMT_get0_provider(ctx->keymgmt));
 810         return ctx->keymgmt->gen_settable_params(ctx->op.keymgmt.genctx,
 811                                                  provctx);
 812     }
 813     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 814         && ctx->op.encap.kem != NULL
 815         && ctx->op.encap.kem->settable_ctx_params != NULL) {
 816         provctx = ossl_provider_ctx(EVP_KEM_get0_provider(ctx->op.encap.kem));
 817         return ctx->op.encap.kem->settable_ctx_params(ctx->op.encap.algctx,
 818                                                       provctx);
 819     }
 820     return NULL;
 821 }
 822
 823 /*
 824  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
 825  *
 826  * Return 1 on success, 0 or negative for errors.
 827  *
 828  * In particular they return -2 if any of the params is not supported.
 829  *
 830  * They are not available in FIPS_MODULE as they depend on
 831  *      - EVP_PKEY_CTX_{get,set}_params()
 832  *      - EVP_PKEY_CTX_{gettable,settable}_params()
 833  *
 834  */
 835 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 836 {
 837     if (ctx == NULL || params == NULL)
 838         return 0;
 839
 840     /*
 841      * We only check for provider side EVP_PKEY_CTX.  For #legacy, we
 842      * depend on the translation that happens in EVP_PKEY_CTX_set_params()
 843      * call, and that the resulting ctrl call will return -2 if it doesn't
 844      * known the ctrl command number.
 845      */
 846     if (evp_pkey_ctx_is_provided(ctx)) {
 847         const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
 848         const OSSL_PARAM *p;
 849
 850         for (p = params; p->key != NULL; p++) {
 851             /* Check the ctx actually understands this parameter */
 852             if (OSSL_PARAM_locate_const(settable, p->key) == NULL )
 853                 return -2;
 854         }
 855     }
 856
 857     return EVP_PKEY_CTX_set_params(ctx, params);
 858 }
 859
 860 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 861 {
 862     if (ctx == NULL || params == NULL)
 863         return 0;
 864
 865     /*
 866      * We only check for provider side EVP_PKEY_CTX.  For #legacy, we
 867      * depend on the translation that happens in EVP_PKEY_CTX_get_params()
 868      * call, and that the resulting ctrl call will return -2 if it doesn't
 869      * known the ctrl command number.
 870      */
 871     if (evp_pkey_ctx_is_provided(ctx)) {
 872         const OSSL_PARAM *gettable = EVP_PKEY_CTX_gettable_params(ctx);
 873         const OSSL_PARAM *p;
 874
 875         for (p = params; p->key != NULL; p++ ) {
 876             /* Check the ctx actually understands this parameter */
 877             if (OSSL_PARAM_locate_const(gettable, p->key) == NULL )
 878                 return -2;
 879         }
 880     }
 881
 882     return EVP_PKEY_CTX_get_params(ctx, params);
 883 }
 884
 885 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
 886 {
 887     OSSL_PARAM sig_md_params[2], *p = sig_md_params;
 888     /* 80 should be big enough */
 889     char name[80] = "";
 890     const EVP_MD *tmp;
 891
 892     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 893         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 894         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 895         return -2;
 896     }
 897
 898     if (ctx->op.sig.algctx == NULL)
 899         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 900                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
 901
 902     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 903                                             name,
 904                                             sizeof(name));
 905     *p = OSSL_PARAM_construct_end();
 906
 907     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
 908         return 0;
 909
 910     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
 911     if (tmp == NULL)
 912         return 0;
 913
 914     *md = tmp;
 915
 916     return 1;
 917 }
 918
 919 static int evp_pkey_ctx_set_md(EVP_PKEY_CTX *ctx, const EVP_MD *md,
 920                                int fallback, const char *param, int op,
 921                                int ctrl)
 922 {
 923     OSSL_PARAM md_params[2], *p = md_params;
 924     const char *name;
 925
 926     if (ctx == NULL || (ctx->operation & op) == 0) {
 927         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 928         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 929         return -2;
 930     }
 931
 932     if (fallback)
 933         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, 0, (void *)(md));
 934
 935     if (md == NULL) {
 936         name = "";
 937     } else {
 938         name = EVP_MD_get0_name(md);
 939     }
 940
 941     *p++ = OSSL_PARAM_construct_utf8_string(param,
 942                                             /*
 943                                              * Cast away the const. This is read
 944                                              * only so should be safe
 945                                              */
 946                                             (char *)name, 0);
 947     *p = OSSL_PARAM_construct_end();
 948
 949     return EVP_PKEY_CTX_set_params(ctx, md_params);
 950 }
 951
 952 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 953 {
 954     return evp_pkey_ctx_set_md(ctx, md, ctx->op.sig.algctx == NULL,
 955                                OSSL_SIGNATURE_PARAM_DIGEST,
 956                                EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD);
 957 }
 958
 959 int EVP_PKEY_CTX_set_tls1_prf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 960 {
 961     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.algctx == NULL,
 962                                OSSL_KDF_PARAM_DIGEST,
 963                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_TLS_MD);
 964 }
 965
 966 static int evp_pkey_ctx_set1_octet_string(EVP_PKEY_CTX *ctx, int fallback,
 967                                           const char *param, int op, int ctrl,
 968                                           const unsigned char *data,
 969                                           int datalen)
 970 {
 971     OSSL_PARAM octet_string_params[2], *p = octet_string_params;
 972
 973     if (ctx == NULL || (ctx->operation & op) == 0) {
 974         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 975         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 976         return -2;
 977     }
 978
 979     /* Code below to be removed when legacy support is dropped. */
 980     if (fallback)
 981         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, datalen, (void *)(data));
 982     /* end of legacy support */
 983
 984     if (datalen < 0) {
 985         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_LENGTH);
 986         return 0;
 987     }
 988
 989     *p++ = OSSL_PARAM_construct_octet_string(param,
 990                                             /*
 991                                              * Cast away the const. This is read
 992                                              * only so should be safe
 993                                              */
 994                                             (unsigned char *)data,
 995                                             (size_t)datalen);
 996     *p = OSSL_PARAM_construct_end();
 997
 998     return EVP_PKEY_CTX_set_params(ctx, octet_string_params);
 999 }
1000
1001 int EVP_PKEY_CTX_set1_tls1_prf_secret(EVP_PKEY_CTX *ctx,
1002                                       const unsigned char *sec, int seclen)
1003 {
1004     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1005                                           OSSL_KDF_PARAM_SECRET,
1006                                           EVP_PKEY_OP_DERIVE,
1007                                           EVP_PKEY_CTRL_TLS_SECRET,
1008                                           sec, seclen);
1009 }
1010
1011 int EVP_PKEY_CTX_add1_tls1_prf_seed(EVP_PKEY_CTX *ctx,
1012                                     const unsigned char *seed, int seedlen)
1013 {
1014     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1015                                           OSSL_KDF_PARAM_SEED,
1016                                           EVP_PKEY_OP_DERIVE,
1017                                           EVP_PKEY_CTRL_TLS_SEED,
1018                                           seed, seedlen);
1019 }
1020
1021 int EVP_PKEY_CTX_set_hkdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
1022 {
1023     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.algctx == NULL,
1024                                OSSL_KDF_PARAM_DIGEST,
1025                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_HKDF_MD);
1026 }
1027
1028 int EVP_PKEY_CTX_set1_hkdf_salt(EVP_PKEY_CTX *ctx,
1029                                 const unsigned char *salt, int saltlen)
1030 {
1031     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1032                                           OSSL_KDF_PARAM_SALT,
1033                                           EVP_PKEY_OP_DERIVE,
1034                                           EVP_PKEY_CTRL_HKDF_SALT,
1035                                           salt, saltlen);
1036 }
1037
1038 int EVP_PKEY_CTX_set1_hkdf_key(EVP_PKEY_CTX *ctx,
1039                                       const unsigned char *key, int keylen)
1040 {
1041     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1042                                           OSSL_KDF_PARAM_KEY,
1043                                           EVP_PKEY_OP_DERIVE,
1044                                           EVP_PKEY_CTRL_HKDF_KEY,
1045                                           key, keylen);
1046 }
1047
1048 int EVP_PKEY_CTX_add1_hkdf_info(EVP_PKEY_CTX *ctx,
1049                                       const unsigned char *info, int infolen)
1050 {
1051     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1052                                           OSSL_KDF_PARAM_INFO,
1053                                           EVP_PKEY_OP_DERIVE,
1054                                           EVP_PKEY_CTRL_HKDF_INFO,
1055                                           info, infolen);
1056 }
1057
1058 int EVP_PKEY_CTX_set_hkdf_mode(EVP_PKEY_CTX *ctx, int mode)
1059 {
1060     OSSL_PARAM int_params[2], *p = int_params;
1061
1062     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1063         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1064         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1065         return -2;
1066     }
1067
1068     /* Code below to be removed when legacy support is dropped. */
1069     if (ctx->op.kex.algctx == NULL)
1070         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_DERIVE,
1071                                  EVP_PKEY_CTRL_HKDF_MODE, mode, NULL);
1072     /* end of legacy support */
1073
1074     if (mode < 0) {
1075         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1076         return 0;
1077     }
1078
1079     *p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_MODE, &mode);
1080     *p = OSSL_PARAM_construct_end();
1081
1082     return EVP_PKEY_CTX_set_params(ctx, int_params);
1083 }
1084
1085 int EVP_PKEY_CTX_set1_pbe_pass(EVP_PKEY_CTX *ctx, const char *pass,
1086                                int passlen)
1087 {
1088     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1089                                           OSSL_KDF_PARAM_PASSWORD,
1090                                           EVP_PKEY_OP_DERIVE,
1091                                           EVP_PKEY_CTRL_PASS,
1092                                           (const unsigned char *)pass, passlen);
1093 }
1094
1095 int EVP_PKEY_CTX_set1_scrypt_salt(EVP_PKEY_CTX *ctx,
1096                                   const unsigned char *salt, int saltlen)
1097 {
1098     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.algctx == NULL,
1099                                           OSSL_KDF_PARAM_SALT,
1100                                           EVP_PKEY_OP_DERIVE,
1101                                           EVP_PKEY_CTRL_SCRYPT_SALT,
1102                                           salt, saltlen);
1103 }
1104
1105 static int evp_pkey_ctx_set_uint64(EVP_PKEY_CTX *ctx, const char *param,
1106                                    int op, int ctrl, uint64_t val)
1107 {
1108     OSSL_PARAM uint64_params[2], *p = uint64_params;
1109
1110     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1111         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1112         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1113         return -2;
1114     }
1115
1116     /* Code below to be removed when legacy support is dropped. */
1117     if (ctx->op.kex.algctx == NULL)
1118         return EVP_PKEY_CTX_ctrl_uint64(ctx, -1, op, ctrl, val);
1119     /* end of legacy support */
1120
1121     *p++ = OSSL_PARAM_construct_uint64(param, &val);
1122     *p = OSSL_PARAM_construct_end();
1123
1124     return EVP_PKEY_CTX_set_params(ctx, uint64_params);
1125 }
1126
1127 int EVP_PKEY_CTX_set_scrypt_N(EVP_PKEY_CTX *ctx, uint64_t n)
1128 {
1129     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_N,
1130                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_N,
1131                                    n);
1132 }
1133
1134 int EVP_PKEY_CTX_set_scrypt_r(EVP_PKEY_CTX *ctx, uint64_t r)
1135 {
1136     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_R,
1137                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_R,
1138                                    r);
1139 }
1140
1141 int EVP_PKEY_CTX_set_scrypt_p(EVP_PKEY_CTX *ctx, uint64_t p)
1142 {
1143     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_P,
1144                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_P,
1145                                    p);
1146 }
1147
1148 int EVP_PKEY_CTX_set_scrypt_maxmem_bytes(EVP_PKEY_CTX *ctx,
1149                                          uint64_t maxmem_bytes)
1150 {
1151     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_MAXMEM,
1152                                    EVP_PKEY_OP_DERIVE,
1153                                    EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES,
1154                                    maxmem_bytes);
1155 }
1156
1157 int EVP_PKEY_CTX_set_mac_key(EVP_PKEY_CTX *ctx, const unsigned char *key,
1158                              int keylen)
1159 {
1160     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.keymgmt.genctx == NULL,
1161                                           OSSL_PKEY_PARAM_PRIV_KEY,
1162                                           EVP_PKEY_OP_KEYGEN,
1163                                           EVP_PKEY_CTRL_SET_MAC_KEY,
1164                                           key, keylen);
1165 }
1166
1167 int EVP_PKEY_CTX_set_kem_op(EVP_PKEY_CTX *ctx, const char *op)
1168 {
1169     OSSL_PARAM params[2], *p = params;
1170
1171     if (ctx == NULL || op == NULL) {
1172         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1173         return 0;
1174     }
1175     if (!EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
1176         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1177         return -2;
1178     }
1179     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KEM_PARAM_OPERATION,
1180                                             (char *)op, 0);
1181     *p = OSSL_PARAM_construct_end();
1182     return EVP_PKEY_CTX_set_params(ctx, params);
1183 }
1184
1185 int evp_pkey_ctx_set1_id_prov(EVP_PKEY_CTX *ctx, const void *id, int len)
1186 {
1187     OSSL_PARAM params[2], *p = params;
1188     int ret;
1189
1190     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1191         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1192         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1193         return -2;
1194     }
1195
1196     *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_DIST_ID,
1197                                              /*
1198                                               * Cast away the const. This is
1199                                               * read only so should be safe
1200                                               */
1201                                              (void *)id, (size_t)len);
1202     *p++ = OSSL_PARAM_construct_end();
1203
1204     ret = evp_pkey_ctx_set_params_strict(ctx, params);
1205     if (ret == -2)
1206         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1207     return ret;
1208 }
1209
1210 int EVP_PKEY_CTX_set1_id(EVP_PKEY_CTX *ctx, const void *id, int len)
1211 {
1212     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1213                              EVP_PKEY_CTRL_SET1_ID, (int)len, (void*)(id));
1214 }
1215
1216 static int get1_id_data(EVP_PKEY_CTX *ctx, void *id, size_t *id_len)
1217 {
1218     int ret;
1219     void *tmp_id = NULL;
1220     OSSL_PARAM params[2], *p = params;
1221
1222     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1223         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1224         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1225         return -2;
1226     }
1227
1228     *p++ = OSSL_PARAM_construct_octet_ptr(OSSL_PKEY_PARAM_DIST_ID,
1229                                           &tmp_id, 0);
1230     *p++ = OSSL_PARAM_construct_end();
1231
1232     ret = evp_pkey_ctx_get_params_strict(ctx, params);
1233     if (ret == -2) {
1234         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1235     } else if (ret > 0) {
1236         size_t tmp_id_len = params[0].return_size;
1237
1238         if (id != NULL)
1239             memcpy(id, tmp_id, tmp_id_len);
1240         if (id_len != NULL)
1241             *id_len = tmp_id_len;
1242     }
1243     return ret;
1244 }
1245
1246 int evp_pkey_ctx_get1_id_prov(EVP_PKEY_CTX *ctx, void *id)
1247 {
1248     return get1_id_data(ctx, id, NULL);
1249 }
1250
1251 int evp_pkey_ctx_get1_id_len_prov(EVP_PKEY_CTX *ctx, size_t *id_len)
1252 {
1253     return get1_id_data(ctx, NULL, id_len);
1254 }
1255
1256 int EVP_PKEY_CTX_get1_id(EVP_PKEY_CTX *ctx, void *id)
1257 {
1258     return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_GET1_ID, 0, (void*)id);
1259 }
1260
1261 int EVP_PKEY_CTX_get1_id_len(EVP_PKEY_CTX *ctx, size_t *id_len)
1262 {
1263     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1264                              EVP_PKEY_CTRL_GET1_ID_LEN, 0, (void*)id_len);
1265 }
1266
1267 static int evp_pkey_ctx_ctrl_int(EVP_PKEY_CTX *ctx, int keytype, int optype,
1268                                  int cmd, int p1, void *p2)
1269 {
1270     int ret = 0;
1271
1272     /*
1273      * If the method has a |digest_custom| function, we can relax the
1274      * operation type check, since this can be called before the operation
1275      * is initialized.
1276      */
1277     if (ctx->pmeth == NULL || ctx->pmeth->digest_custom == NULL) {
1278         if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
1279             ERR_raise(ERR_LIB_EVP, EVP_R_NO_OPERATION_SET);
1280             return -1;
1281         }
1282
1283         if ((optype != -1) && !(ctx->operation & optype)) {
1284             ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1285             return -1;
1286         }
1287     }
1288
1289     switch (evp_pkey_ctx_state(ctx)) {
1290     case EVP_PKEY_STATE_PROVIDER:
1291         return evp_pkey_ctx_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
1292     case EVP_PKEY_STATE_UNKNOWN:
1293     case EVP_PKEY_STATE_LEGACY:
1294         if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
1295             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1296             return -2;
1297         }
1298         if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
1299             return -1;
1300
1301         ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
1302
1303         if (ret == -2)
1304             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1305         break;
1306     }
1307     return ret;
1308 }
1309
1310 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
1311                       int cmd, int p1, void *p2)
1312 {
1313     int ret = 0;
1314
1315     if (ctx == NULL) {
1316         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1317         return -2;
1318     }
1319     /* If unsupported, we don't want that reported here */
1320     ERR_set_mark();
1321     ret = evp_pkey_ctx_store_cached_data(ctx, keytype, optype,
1322                                          cmd, NULL, p2, p1);
1323     if (ret == -2) {
1324         ERR_pop_to_mark();
1325     } else {
1326         ERR_clear_last_mark();
1327         /*
1328          * If there was an error, there was an error.
1329          * If the operation isn't initialized yet, we also return, as
1330          * the saved values will be used then anyway.
1331          */
1332         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1333             return ret;
1334     }
1335     return evp_pkey_ctx_ctrl_int(ctx, keytype, optype, cmd, p1, p2);
1336 }
1337
1338 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
1339                              int cmd, uint64_t value)
1340 {
1341     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
1342 }
1343
1344
1345 static int evp_pkey_ctx_ctrl_str_int(EVP_PKEY_CTX *ctx,
1346                                      const char *name, const char *value)
1347 {
1348     int ret = 0;
1349
1350     if (ctx == NULL) {
1351         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1352         return -2;
1353     }
1354
1355     switch (evp_pkey_ctx_state(ctx)) {
1356     case EVP_PKEY_STATE_PROVIDER:
1357         return evp_pkey_ctx_ctrl_str_to_param(ctx, name, value);
1358     case EVP_PKEY_STATE_UNKNOWN:
1359     case EVP_PKEY_STATE_LEGACY:
1360         if (ctx == NULL || ctx->pmeth == NULL || ctx->pmeth->ctrl_str == NULL) {
1361             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1362             return -2;
1363         }
1364         if (strcmp(name, "digest") == 0)
1365             ret = EVP_PKEY_CTX_md(ctx,
1366                                   EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT,
1367                                   EVP_PKEY_CTRL_MD, value);
1368         else
1369             ret = ctx->pmeth->ctrl_str(ctx, name, value);
1370         break;
1371     }
1372
1373     return ret;
1374 }
1375
1376 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
1377                           const char *name, const char *value)
1378 {
1379     int ret = 0;
1380
1381     /* If unsupported, we don't want that reported here */
1382     ERR_set_mark();
1383     ret = evp_pkey_ctx_store_cached_data(ctx, -1, -1, -1,
1384                                          name, value, strlen(value) + 1);
1385     if (ret == -2) {
1386         ERR_pop_to_mark();
1387     } else {
1388         ERR_clear_last_mark();
1389         /*
1390          * If there was an error, there was an error.
1391          * If the operation isn't initialized yet, we also return, as
1392          * the saved values will be used then anyway.
1393          */
1394         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1395             return ret;
1396     }
1397
1398     return evp_pkey_ctx_ctrl_str_int(ctx, name, value);
1399 }
1400
1401 static int decode_cmd(int cmd, const char *name)
1402 {
1403     if (cmd == -1) {
1404         /*
1405          * The consequence of the assertion not being true is that this
1406          * function will return -1, which will cause the calling functions
1407          * to signal that the command is unsupported...  in non-debug mode.
1408          */
1409         if (ossl_assert(name != NULL))
1410             if (strcmp(name, "distid") == 0 || strcmp(name, "hexdistid") == 0)
1411                 cmd = EVP_PKEY_CTRL_SET1_ID;
1412     }
1413
1414     return cmd;
1415 }
1416
1417 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
1418                                           int keytype, int optype,
1419                                           int cmd, const char *name,
1420                                           const void *data, size_t data_len)
1421 {
1422     /*
1423      * Check that it's one of the supported commands.  The ctrl commands
1424      * number cases here must correspond to the cases in the bottom switch
1425      * in this function.
1426      */
1427     switch (cmd = decode_cmd(cmd, name)) {
1428     case EVP_PKEY_CTRL_SET1_ID:
1429         break;
1430     default:
1431         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1432         return -2;
1433     }
1434
1435     if (keytype != -1) {
1436         switch (evp_pkey_ctx_state(ctx)) {
1437         case EVP_PKEY_STATE_PROVIDER:
1438             if (ctx->keymgmt == NULL) {
1439                 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1440                 return -2;
1441             }
1442             if (!EVP_KEYMGMT_is_a(ctx->keymgmt,
1443                                   evp_pkey_type2name(keytype))) {
1444                 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1445                 return -1;
1446             }
1447             break;
1448         case EVP_PKEY_STATE_UNKNOWN:
1449         case EVP_PKEY_STATE_LEGACY:
1450             if (ctx->pmeth == NULL) {
1451                 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1452                 return -2;
1453             }
1454             if (EVP_PKEY_type(ctx->pmeth->pkey_id) != EVP_PKEY_type(keytype)) {
1455                 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1456                 return -1;
1457             }
1458             break;
1459         }
1460     }
1461     if (optype != -1 && (ctx->operation & optype) == 0) {
1462         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1463         return -1;
1464     }
1465
1466     switch (cmd) {
1467     case EVP_PKEY_CTRL_SET1_ID:
1468         evp_pkey_ctx_free_cached_data(ctx, cmd, name);
1469         if (name != NULL) {
1470             ctx->cached_parameters.dist_id_name = OPENSSL_strdup(name);
1471             if (ctx->cached_parameters.dist_id_name == NULL) {
1472                 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1473                 return 0;
1474             }
1475         }
1476         if (data_len > 0) {
1477             ctx->cached_parameters.dist_id = OPENSSL_memdup(data, data_len);
1478             if (ctx->cached_parameters.dist_id == NULL) {
1479                 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1480                 return 0;
1481             }
1482         }
1483         ctx->cached_parameters.dist_id_set = 1;
1484         ctx->cached_parameters.dist_id_len = data_len;
1485         break;
1486     }
1487     return 1;
1488 }
1489
1490 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
1491                                           int cmd, const char *name)
1492 {
1493     cmd = decode_cmd(cmd, name);
1494     switch (cmd) {
1495     case EVP_PKEY_CTRL_SET1_ID:
1496         OPENSSL_free(ctx->cached_parameters.dist_id);
1497         OPENSSL_free(ctx->cached_parameters.dist_id_name);
1498         ctx->cached_parameters.dist_id = NULL;
1499         ctx->cached_parameters.dist_id_name = NULL;
1500         break;
1501     }
1502 }
1503
1504 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx)
1505 {
1506     evp_pkey_ctx_free_cached_data(ctx, EVP_PKEY_CTRL_SET1_ID, NULL);
1507 }
1508
1509 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx)
1510 {
1511     int ret = 1;
1512
1513     if (ret && ctx->cached_parameters.dist_id_set) {
1514         const char *name = ctx->cached_parameters.dist_id_name;
1515         const void *val = ctx->cached_parameters.dist_id;
1516         size_t len = ctx->cached_parameters.dist_id_len;
1517
1518         if (name != NULL)
1519             ret = evp_pkey_ctx_ctrl_str_int(ctx, name, val);
1520         else
1521             ret = evp_pkey_ctx_ctrl_int(ctx, -1, ctx->operation,
1522                                         EVP_PKEY_CTRL_SET1_ID,
1523                                         (int)len, (void *)val);
1524     }
1525
1526     return ret;
1527 }
1528
1529 OSSL_LIB_CTX *EVP_PKEY_CTX_get0_libctx(EVP_PKEY_CTX *ctx)
1530 {
1531     return ctx->libctx;
1532 }
1533
1534 const char *EVP_PKEY_CTX_get0_propq(EVP_PKEY_CTX *ctx)
1535 {
1536     return ctx->propquery;
1537 }
1538
1539 /* Utility functions to send a string of hex string to a ctrl */
1540
1541 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
1542 {
1543     size_t len;
1544
1545     len = strlen(str);
1546     if (len > INT_MAX)
1547         return -1;
1548     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
1549 }
1550
1551 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
1552 {
1553     unsigned char *bin;
1554     long binlen;
1555     int rv = -1;
1556
1557     bin = OPENSSL_hexstr2buf(hex, &binlen);
1558     if (bin == NULL)
1559         return 0;
1560     if (binlen <= INT_MAX)
1561         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
1562     OPENSSL_free(bin);
1563     return rv;
1564 }
1565
1566 /* Pass a message digest to a ctrl */
1567 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
1568 {
1569     const EVP_MD *m;
1570
1571     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
1572         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_DIGEST);
1573         return 0;
1574     }
1575     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
1576 }
1577
1578 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
1579 {
1580     return ctx->operation;
1581 }
1582
1583 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
1584 {
1585     ctx->keygen_info = dat;
1586     ctx->keygen_info_count = datlen;
1587 }
1588
1589 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
1590 {
1591     ctx->data = data;
1592 }
1593
1594 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
1595 {
1596     return ctx->data;
1597 }
1598
1599 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
1600 {
1601     return ctx->pkey;
1602 }
1603
1604 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
1605 {
1606     return ctx->peerkey;
1607 }
1608
1609 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
1610 {
1611     ctx->app_data = data;
1612 }
1613
1614 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
1615 {
1616     return ctx->app_data;
1617 }
1618
1619 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1620                             int (*init) (EVP_PKEY_CTX *ctx))
1621 {
1622     pmeth->init = init;
1623 }
1624
1625 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1626                             int (*copy) (EVP_PKEY_CTX *dst,
1627                                          const EVP_PKEY_CTX *src))
1628 {
1629     pmeth->copy = copy;
1630 }
1631
1632 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1633                                void (*cleanup) (EVP_PKEY_CTX *ctx))
1634 {
1635     pmeth->cleanup = cleanup;
1636 }
1637
1638 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1639                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1640                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
1641                                                  EVP_PKEY *pkey))
1642 {
1643     pmeth->paramgen_init = paramgen_init;
1644     pmeth->paramgen = paramgen;
1645 }
1646
1647 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1648                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
1649                               int (*keygen) (EVP_PKEY_CTX *ctx,
1650                                              EVP_PKEY *pkey))
1651 {
1652     pmeth->keygen_init = keygen_init;
1653     pmeth->keygen = keygen;
1654 }
1655
1656 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1657                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1658                             int (*sign) (EVP_PKEY_CTX *ctx,
1659                                          unsigned char *sig, size_t *siglen,
1660                                          const unsigned char *tbs,
1661                                          size_t tbslen))
1662 {
1663     pmeth->sign_init = sign_init;
1664     pmeth->sign = sign;
1665 }
1666
1667 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1668                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1669                               int (*verify) (EVP_PKEY_CTX *ctx,
1670                                              const unsigned char *sig,
1671                                              size_t siglen,
1672                                              const unsigned char *tbs,
1673                                              size_t tbslen))
1674 {
1675     pmeth->verify_init = verify_init;
1676     pmeth->verify = verify;
1677 }
1678
1679 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1680                                       int (*verify_recover_init) (EVP_PKEY_CTX
1681                                                                   *ctx),
1682                                       int (*verify_recover) (EVP_PKEY_CTX
1683                                                              *ctx,
1684                                                              unsigned char
1685                                                              *sig,
1686                                                              size_t *siglen,
1687                                                              const unsigned
1688                                                              char *tbs,
1689                                                              size_t tbslen))
1690 {
1691     pmeth->verify_recover_init = verify_recover_init;
1692     pmeth->verify_recover = verify_recover;
1693 }
1694
1695 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1696                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1697                                                     EVP_MD_CTX *mctx),
1698                                int (*signctx) (EVP_PKEY_CTX *ctx,
1699                                                unsigned char *sig,
1700                                                size_t *siglen,
1701                                                EVP_MD_CTX *mctx))
1702 {
1703     pmeth->signctx_init = signctx_init;
1704     pmeth->signctx = signctx;
1705 }
1706
1707 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1708                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1709                                                         EVP_MD_CTX *mctx),
1710                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1711                                                    const unsigned char *sig,
1712                                                    int siglen,
1713                                                    EVP_MD_CTX *mctx))
1714 {
1715     pmeth->verifyctx_init = verifyctx_init;
1716     pmeth->verifyctx = verifyctx;
1717 }
1718
1719 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1720                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1721                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1722                                                  unsigned char *out,
1723                                                  size_t *outlen,
1724                                                  const unsigned char *in,
1725                                                  size_t inlen))
1726 {
1727     pmeth->encrypt_init = encrypt_init;
1728     pmeth->encrypt = encryptfn;
1729 }
1730
1731 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1732                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1733                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1734                                                unsigned char *out,
1735                                                size_t *outlen,
1736                                                const unsigned char *in,
1737                                                size_t inlen))
1738 {
1739     pmeth->decrypt_init = decrypt_init;
1740     pmeth->decrypt = decrypt;
1741 }
1742
1743 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1744                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1745                               int (*derive) (EVP_PKEY_CTX *ctx,
1746                                              unsigned char *key,
1747                                              size_t *keylen))
1748 {
1749     pmeth->derive_init = derive_init;
1750     pmeth->derive = derive;
1751 }
1752
1753 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1754                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1755                                          void *p2),
1756                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1757                                              const char *type,
1758                                              const char *value))
1759 {
1760     pmeth->ctrl = ctrl;
1761     pmeth->ctrl_str = ctrl_str;
1762 }
1763
1764 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1765     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1766                        const unsigned char *tbs, size_t tbslen))
1767 {
1768     pmeth->digestsign = digestsign;
1769 }
1770
1771 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1772     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1773                          size_t siglen, const unsigned char *tbs,
1774                          size_t tbslen))
1775 {
1776     pmeth->digestverify = digestverify;
1777 }
1778
1779 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1780                              int (*check) (EVP_PKEY *pkey))
1781 {
1782     pmeth->check = check;
1783 }
1784
1785 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1786                                     int (*check) (EVP_PKEY *pkey))
1787 {
1788     pmeth->public_check = check;
1789 }
1790
1791 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1792                                    int (*check) (EVP_PKEY *pkey))
1793 {
1794     pmeth->param_check = check;
1795 }
1796
1797 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1798                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
1799                                                            EVP_MD_CTX *mctx))
1800 {
1801     pmeth->digest_custom = digest_custom;
1802 }
1803
1804 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1805                             int (**pinit) (EVP_PKEY_CTX *ctx))
1806 {
1807     *pinit = pmeth->init;
1808 }
1809
1810 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
1811                             int (**pcopy) (EVP_PKEY_CTX *dst,
1812                                            const EVP_PKEY_CTX *src))
1813 {
1814     *pcopy = pmeth->copy;
1815 }
1816
1817 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
1818                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
1819 {
1820     *pcleanup = pmeth->cleanup;
1821 }
1822
1823 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
1824                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
1825                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
1826                                                    EVP_PKEY *pkey))
1827 {
1828     if (pparamgen_init)
1829         *pparamgen_init = pmeth->paramgen_init;
1830     if (pparamgen)
1831         *pparamgen = pmeth->paramgen;
1832 }
1833
1834 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
1835                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
1836                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
1837                                                EVP_PKEY *pkey))
1838 {
1839     if (pkeygen_init)
1840         *pkeygen_init = pmeth->keygen_init;
1841     if (pkeygen)
1842         *pkeygen = pmeth->keygen;
1843 }
1844
1845 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
1846                             int (**psign_init) (EVP_PKEY_CTX *ctx),
1847                             int (**psign) (EVP_PKEY_CTX *ctx,
1848                                            unsigned char *sig, size_t *siglen,
1849                                            const unsigned char *tbs,
1850                                            size_t tbslen))
1851 {
1852     if (psign_init)
1853         *psign_init = pmeth->sign_init;
1854     if (psign)
1855         *psign = pmeth->sign;
1856 }
1857
1858 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
1859                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
1860                               int (**pverify) (EVP_PKEY_CTX *ctx,
1861                                                const unsigned char *sig,
1862                                                size_t siglen,
1863                                                const unsigned char *tbs,
1864                                                size_t tbslen))
1865 {
1866     if (pverify_init)
1867         *pverify_init = pmeth->verify_init;
1868     if (pverify)
1869         *pverify = pmeth->verify;
1870 }
1871
1872 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
1873                                       int (**pverify_recover_init) (EVP_PKEY_CTX
1874                                                                     *ctx),
1875                                       int (**pverify_recover) (EVP_PKEY_CTX
1876                                                                *ctx,
1877                                                                unsigned char
1878                                                                *sig,
1879                                                                size_t *siglen,
1880                                                                const unsigned
1881                                                                char *tbs,
1882                                                                size_t tbslen))
1883 {
1884     if (pverify_recover_init)
1885         *pverify_recover_init = pmeth->verify_recover_init;
1886     if (pverify_recover)
1887         *pverify_recover = pmeth->verify_recover;
1888 }
1889
1890 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
1891                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
1892                                                       EVP_MD_CTX *mctx),
1893                                int (**psignctx) (EVP_PKEY_CTX *ctx,
1894                                                  unsigned char *sig,
1895                                                  size_t *siglen,
1896                                                  EVP_MD_CTX *mctx))
1897 {
1898     if (psignctx_init)
1899         *psignctx_init = pmeth->signctx_init;
1900     if (psignctx)
1901         *psignctx = pmeth->signctx;
1902 }
1903
1904 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
1905                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
1906                                                           EVP_MD_CTX *mctx),
1907                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
1908                                                      const unsigned char *sig,
1909                                                      int siglen,
1910                                                      EVP_MD_CTX *mctx))
1911 {
1912     if (pverifyctx_init)
1913         *pverifyctx_init = pmeth->verifyctx_init;
1914     if (pverifyctx)
1915         *pverifyctx = pmeth->verifyctx;
1916 }
1917
1918 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
1919                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
1920                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
1921                                                    unsigned char *out,
1922                                                    size_t *outlen,
1923                                                    const unsigned char *in,
1924                                                    size_t inlen))
1925 {
1926     if (pencrypt_init)
1927         *pencrypt_init = pmeth->encrypt_init;
1928     if (pencryptfn)
1929         *pencryptfn = pmeth->encrypt;
1930 }
1931
1932 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
1933                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
1934                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
1935                                                  unsigned char *out,
1936                                                  size_t *outlen,
1937                                                  const unsigned char *in,
1938                                                  size_t inlen))
1939 {
1940     if (pdecrypt_init)
1941         *pdecrypt_init = pmeth->decrypt_init;
1942     if (pdecrypt)
1943         *pdecrypt = pmeth->decrypt;
1944 }
1945
1946 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
1947                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
1948                               int (**pderive) (EVP_PKEY_CTX *ctx,
1949                                                unsigned char *key,
1950                                                size_t *keylen))
1951 {
1952     if (pderive_init)
1953         *pderive_init = pmeth->derive_init;
1954     if (pderive)
1955         *pderive = pmeth->derive;
1956 }
1957
1958 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
1959                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1960                                            void *p2),
1961                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
1962                                                const char *type,
1963                                                const char *value))
1964 {
1965     if (pctrl)
1966         *pctrl = pmeth->ctrl;
1967     if (pctrl_str)
1968         *pctrl_str = pmeth->ctrl_str;
1969 }
1970
1971 void EVP_PKEY_meth_get_digestsign(EVP_PKEY_METHOD *pmeth,
1972     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1973                         const unsigned char *tbs, size_t tbslen))
1974 {
1975     if (digestsign)
1976         *digestsign = pmeth->digestsign;
1977 }
1978
1979 void EVP_PKEY_meth_get_digestverify(EVP_PKEY_METHOD *pmeth,
1980     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1981                           size_t siglen, const unsigned char *tbs,
1982                           size_t tbslen))
1983 {
1984     if (digestverify)
1985         *digestverify = pmeth->digestverify;
1986 }
1987
1988 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
1989                              int (**pcheck) (EVP_PKEY *pkey))
1990 {
1991     if (pcheck != NULL)
1992         *pcheck = pmeth->check;
1993 }
1994
1995 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
1996                                     int (**pcheck) (EVP_PKEY *pkey))
1997 {
1998     if (pcheck != NULL)
1999         *pcheck = pmeth->public_check;
2000 }
2001
2002 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
2003                                    int (**pcheck) (EVP_PKEY *pkey))
2004 {
2005     if (pcheck != NULL)
2006         *pcheck = pmeth->param_check;
2007 }
2008
2009 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
2010                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
2011                                                              EVP_MD_CTX *mctx))
2012 {
2013     if (pdigest_custom != NULL)
2014         *pdigest_custom = pmeth->digest_custom;
2015 }
2016
2017 #endif /* FIPS_MODULE */