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 #include <openssl/engine.h>
  19 #include <openssl/evp.h>
  20 #include <openssl/x509v3.h>
  21 #include <openssl/core_names.h>
  22 #include <openssl/dh.h>
  23 #include <openssl/rsa.h>
  24 #include <openssl/kdf.h>
  25 #include "internal/cryptlib.h"
  26 #include "crypto/asn1.h"
  27 #include "crypto/evp.h"
  28 #include "crypto/dh.h"
  29 #include "crypto/ec.h"
  30 #include "internal/ffc.h"
  31 #include "internal/numbers.h"
  32 #include "internal/provider.h"
  33 #include "evp_local.h"
  34
  35 #ifndef FIPS_MODULE
  36
  37 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
  38                                           int keytype, int optype,
  39                                           int cmd, const char *name,
  40                                           const void *data, size_t data_len);
  41 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
  42                                           int cmd, const char *name);
  43 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx);
  44
  45 typedef const EVP_PKEY_METHOD *(*pmeth_fn)(void);
  46 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
  47
  48 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
  49
  50 /* This array needs to be in order of NIDs */
  51 static pmeth_fn standard_methods[] = {
  52     ossl_rsa_pkey_method,
  53 # ifndef OPENSSL_NO_DH
  54     ossl_dh_pkey_method,
  55 # endif
  56 # ifndef OPENSSL_NO_DSA
  57     dsa_pkey_method,
  58 # endif
  59 # ifndef OPENSSL_NO_EC
  60     ec_pkey_method,
  61 # endif
  62     ossl_rsa_pss_pkey_method,
  63 # ifndef OPENSSL_NO_DH
  64     ossl_dhx_pkey_method,
  65 # endif
  66 # ifndef OPENSSL_NO_EC
  67     ecx25519_pkey_method,
  68     ecx448_pkey_method,
  69 # endif
  70 # ifndef OPENSSL_NO_EC
  71     ed25519_pkey_method,
  72     ed448_pkey_method,
  73 # endif
  74 };
  75
  76 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  77
  78 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
  79 {
  80     return ((*a)->pkey_id - ((**b)())->pkey_id);
  81 }
  82
  83 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  84
  85 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  86                      const EVP_PKEY_METHOD *const *b)
  87 {
  88     return ((*a)->pkey_id - (*b)->pkey_id);
  89 }
  90
  91 static const EVP_PKEY_METHOD *evp_pkey_meth_find_added_by_application(int type)
  92 {
  93     if (app_pkey_methods != NULL) {
  94         int idx;
  95         EVP_PKEY_METHOD tmp;
  96
  97         tmp.pkey_id = type;
  98         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
  99         if (idx >= 0)
 100             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 101     }
 102     return NULL;
 103 }
 104
 105 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
 106 {
 107     pmeth_fn *ret;
 108     EVP_PKEY_METHOD tmp;
 109     const EVP_PKEY_METHOD *t;
 110
 111     if ((t = evp_pkey_meth_find_added_by_application(type)) != NULL)
 112         return t;
 113
 114     tmp.pkey_id = type;
 115     t = &tmp;
 116     ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
 117                                  OSSL_NELEM(standard_methods));
 118     if (ret == NULL || *ret == NULL)
 119         return NULL;
 120     return (**ret)();
 121 }
 122
 123 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 124 {
 125     EVP_PKEY_METHOD *pmeth;
 126
 127     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 128     if (pmeth == NULL) {
 129         ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 130         return NULL;
 131     }
 132
 133     pmeth->pkey_id = id;
 134     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 135     return pmeth;
 136 }
 137
 138 static void help_get_legacy_alg_type_from_keymgmt(const char *keytype,
 139                                                   void *arg)
 140 {
 141     int *type = arg;
 142
 143     if (*type == NID_undef)
 144         *type = evp_pkey_name2type(keytype);
 145 }
 146
 147 static int get_legacy_alg_type_from_keymgmt(const EVP_KEYMGMT *keymgmt)
 148 {
 149     int type = NID_undef;
 150
 151     EVP_KEYMGMT_names_do_all(keymgmt, help_get_legacy_alg_type_from_keymgmt,
 152                              &type);
 153     return type;
 154 }
 155 #endif /* FIPS_MODULE */
 156
 157 int evp_pkey_ctx_state(const EVP_PKEY_CTX *ctx)
 158 {
 159     if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
 160         return EVP_PKEY_STATE_UNKNOWN;
 161
 162     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 163          && ctx->op.kex.exchprovctx != NULL)
 164         || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 165             && ctx->op.sig.sigprovctx != NULL)
 166         || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 167             && ctx->op.ciph.ciphprovctx != NULL)
 168         || (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 169             && ctx->op.keymgmt.genctx != NULL)
 170         || (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 171             && ctx->op.encap.kemprovctx != NULL))
 172         return EVP_PKEY_STATE_PROVIDER;
 173
 174     return EVP_PKEY_STATE_LEGACY;
 175 }
 176
 177 static EVP_PKEY_CTX *int_ctx_new(OSSL_LIB_CTX *libctx,
 178                                  EVP_PKEY *pkey, ENGINE *e,
 179                                  const char *keytype, const char *propquery,
 180                                  int id)
 181
 182 {
 183     EVP_PKEY_CTX *ret = NULL;
 184     const EVP_PKEY_METHOD *pmeth = NULL;
 185     EVP_KEYMGMT *keymgmt = NULL;
 186
 187     /*
 188      * If the given |pkey| is provided, we extract the keytype from its
 189      * keymgmt and skip over the legacy code.
 190      */
 191     if (pkey != NULL && evp_pkey_is_provided(pkey)) {
 192         /* If we have an engine, something went wrong somewhere... */
 193         if (!ossl_assert(e == NULL))
 194             return NULL;
 195         keytype = evp_first_name(pkey->keymgmt->prov, pkey->keymgmt->name_id);
 196         goto common;
 197     }
 198
 199 #ifndef FIPS_MODULE
 200     /*
 201      * TODO(3.0) This legacy code section should be removed when we stop
 202      * supporting engines
 203      */
 204     /* BEGIN legacy */
 205     if (id == -1) {
 206         if (pkey != NULL)
 207             id = pkey->type;
 208         else if (keytype != NULL)
 209             id = evp_pkey_name2type(keytype);
 210         if (id == NID_undef)
 211             id = -1;
 212     }
 213     /* If no ID was found here, we can only resort to find a keymgmt */
 214     if (id == -1)
 215         goto common;
 216
 217     /*
 218      * Here, we extract what information we can for the purpose of
 219      * supporting usage with implementations from providers, to make
 220      * for a smooth transition from legacy stuff to provider based stuff.
 221      *
 222      * If an engine is given, this is entirely legacy, and we should not
 223      * pretend anything else, so we only set the name when no engine is
 224      * given.  If both are already given, someone made a mistake, and
 225      * since that can only happen internally, it's safe to make an
 226      * assertion.
 227      */
 228     if (!ossl_assert(e == NULL || keytype == NULL))
 229         return NULL;
 230     if (e == NULL)
 231         keytype = OBJ_nid2sn(id);
 232
 233 # ifndef OPENSSL_NO_ENGINE
 234     if (e == NULL && pkey != NULL)
 235         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 236     /* Try to find an ENGINE which implements this method */
 237     if (e) {
 238         if (!ENGINE_init(e)) {
 239             ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
 240             return NULL;
 241         }
 242     } else {
 243         e = ENGINE_get_pkey_meth_engine(id);
 244     }
 245
 246     /*
 247      * If an ENGINE handled this method look it up. Otherwise use internal
 248      * tables.
 249      */
 250     if (e != NULL)
 251         pmeth = ENGINE_get_pkey_meth(e, id);
 252     else
 253 # endif
 254         pmeth = evp_pkey_meth_find_added_by_application(id);
 255
 256     /* END legacy */
 257 #endif /* FIPS_MODULE */
 258  common:
 259     /*
 260      * If there's no engine and there's a name, we try fetching a provider
 261      * implementation.
 262      */
 263     if (e == NULL && keytype != NULL) {
 264         keymgmt = EVP_KEYMGMT_fetch(libctx, keytype, propquery);
 265         if (keymgmt == NULL)
 266             return NULL;   /* EVP_KEYMGMT_fetch() recorded an error */
 267
 268 #ifndef FIPS_MODULE
 269         /*
 270          * Chase down the legacy NID, as that might be needed for diverse
 271          * purposes, such as ensure that EVP_PKEY_type() can return sensible
 272          * values, or that there's a better chance to "downgrade" a key when
 273          * needed.  We go through all keymgmt names, because the keytype
 274          * that's passed to this function doesn't necessarily translate
 275          * directly.
 276          * TODO: Remove this when #legacy keys are gone.
 277          */
 278         if (keymgmt != NULL) {
 279             int tmp_id = get_legacy_alg_type_from_keymgmt(keymgmt);
 280
 281             if (tmp_id != NID_undef) {
 282                 if (id == -1) {
 283                     id = tmp_id;
 284                 } else {
 285                     /*
 286                      * It really really shouldn't differ.  If it still does,
 287                      * something is very wrong.
 288                      */
 289                     if (!ossl_assert(id == tmp_id)) {
 290                         ERR_raise(ERR_LIB_EVP, ERR_R_INTERNAL_ERROR);
 291                         EVP_KEYMGMT_free(keymgmt);
 292                         return NULL;
 293                     }
 294                 }
 295             }
 296         }
 297 #endif
 298     }
 299
 300     if (pmeth == NULL && keymgmt == NULL) {
 301         ERR_raise(ERR_LIB_EVP, EVP_R_UNSUPPORTED_ALGORITHM);
 302     } else {
 303         ret = OPENSSL_zalloc(sizeof(*ret));
 304         if (ret == NULL)
 305             ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 306     }
 307
 308 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 309     if ((ret == NULL || pmeth == NULL) && e != NULL)
 310         ENGINE_finish(e);
 311 #endif
 312
 313     if (ret == NULL) {
 314         EVP_KEYMGMT_free(keymgmt);
 315         return NULL;
 316     }
 317     if (propquery != NULL) {
 318         ret->propquery = OPENSSL_strdup(propquery);
 319         if (ret->propquery == NULL) {
 320             EVP_KEYMGMT_free(keymgmt);
 321             return NULL;
 322         }
 323     }
 324     ret->libctx = libctx;
 325     ret->keytype = keytype;
 326     ret->keymgmt = keymgmt;
 327     ret->legacy_keytype = id;   /* TODO: Remove when #legacy key are gone */
 328     ret->engine = e;
 329     ret->pmeth = pmeth;
 330     ret->operation = EVP_PKEY_OP_UNDEFINED;
 331     ret->pkey = pkey;
 332     if (pkey != NULL)
 333         EVP_PKEY_up_ref(pkey);
 334
 335     if (pmeth != NULL && pmeth->init != NULL) {
 336         if (pmeth->init(ret) <= 0) {
 337             ret->pmeth = NULL;
 338             EVP_PKEY_CTX_free(ret);
 339             return NULL;
 340         }
 341     }
 342
 343     return ret;
 344 }
 345
 346 /*- All methods below can also be used in FIPS_MODULE */
 347
 348 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OSSL_LIB_CTX *libctx,
 349                                          const char *name,
 350                                          const char *propquery)
 351 {
 352     return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
 353 }
 354
 355 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OSSL_LIB_CTX *libctx, EVP_PKEY *pkey,
 356                                          const char *propquery)
 357 {
 358     return int_ctx_new(libctx, pkey, NULL, NULL, propquery, -1);
 359 }
 360
 361 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
 362 {
 363     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 364         if (ctx->op.sig.sigprovctx != NULL && ctx->op.sig.signature != NULL)
 365             ctx->op.sig.signature->freectx(ctx->op.sig.sigprovctx);
 366         EVP_SIGNATURE_free(ctx->op.sig.signature);
 367         ctx->op.sig.sigprovctx = NULL;
 368         ctx->op.sig.signature = NULL;
 369     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 370         if (ctx->op.kex.exchprovctx != NULL && ctx->op.kex.exchange != NULL)
 371             ctx->op.kex.exchange->freectx(ctx->op.kex.exchprovctx);
 372         EVP_KEYEXCH_free(ctx->op.kex.exchange);
 373         ctx->op.kex.exchprovctx = NULL;
 374         ctx->op.kex.exchange = NULL;
 375     } else if (EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
 376         if (ctx->op.encap.kemprovctx != NULL && ctx->op.encap.kem != NULL)
 377             ctx->op.encap.kem->freectx(ctx->op.encap.kemprovctx);
 378         EVP_KEM_free(ctx->op.encap.kem);
 379         ctx->op.encap.kemprovctx = NULL;
 380         ctx->op.encap.kem = NULL;
 381     }
 382     else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
 383         if (ctx->op.ciph.ciphprovctx != NULL && ctx->op.ciph.cipher != NULL)
 384             ctx->op.ciph.cipher->freectx(ctx->op.ciph.ciphprovctx);
 385         EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
 386         ctx->op.ciph.ciphprovctx = NULL;
 387         ctx->op.ciph.cipher = NULL;
 388     } else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
 389         if (ctx->op.keymgmt.genctx != NULL && ctx->keymgmt != NULL)
 390             evp_keymgmt_gen_cleanup(ctx->keymgmt, ctx->op.keymgmt.genctx);
 391     }
 392 }
 393
 394 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 395 {
 396     if (ctx == NULL)
 397         return;
 398     if (ctx->pmeth && ctx->pmeth->cleanup)
 399         ctx->pmeth->cleanup(ctx);
 400
 401     evp_pkey_ctx_free_old_ops(ctx);
 402 #ifndef FIPS_MODULE
 403     evp_pkey_ctx_free_all_cached_data(ctx);
 404 #endif
 405     EVP_KEYMGMT_free(ctx->keymgmt);
 406
 407     OPENSSL_free(ctx->propquery);
 408     EVP_PKEY_free(ctx->pkey);
 409     EVP_PKEY_free(ctx->peerkey);
 410 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 411     ENGINE_finish(ctx->engine);
 412 #endif
 413     BN_free(ctx->rsa_pubexp);
 414     OPENSSL_free(ctx);
 415 }
 416
 417 #ifndef FIPS_MODULE
 418
 419 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 420                              const EVP_PKEY_METHOD *meth)
 421 {
 422     if (ppkey_id)
 423         *ppkey_id = meth->pkey_id;
 424     if (pflags)
 425         *pflags = meth->flags;
 426 }
 427
 428 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 429 {
 430     int pkey_id = dst->pkey_id;
 431     int flags = dst->flags;
 432
 433     *dst = *src;
 434
 435     /* We only copy the function pointers so restore the other values */
 436     dst->pkey_id = pkey_id;
 437     dst->flags = flags;
 438 }
 439
 440 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 441 {
 442     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 443         OPENSSL_free(pmeth);
 444 }
 445
 446 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 447 {
 448     return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
 449 }
 450
 451 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 452 {
 453     return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
 454 }
 455
 456 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 457 {
 458     EVP_PKEY_CTX *rctx;
 459
 460 # ifndef OPENSSL_NO_ENGINE
 461     /* Make sure it's safe to copy a pkey context using an ENGINE */
 462     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 463         ERR_raise(ERR_LIB_EVP, ERR_R_ENGINE_LIB);
 464         return 0;
 465     }
 466 # endif
 467     rctx = OPENSSL_zalloc(sizeof(*rctx));
 468     if (rctx == NULL) {
 469         ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 470         return NULL;
 471     }
 472
 473     if (pctx->pkey != NULL)
 474         EVP_PKEY_up_ref(pctx->pkey);
 475     rctx->pkey = pctx->pkey;
 476     rctx->operation = pctx->operation;
 477     rctx->libctx = pctx->libctx;
 478     rctx->keytype = pctx->keytype;
 479     rctx->propquery = NULL;
 480     if (pctx->propquery != NULL) {
 481         rctx->propquery = OPENSSL_strdup(pctx->propquery);
 482         if (rctx->propquery == NULL)
 483             goto err;
 484     }
 485     rctx->legacy_keytype = pctx->legacy_keytype;
 486
 487     if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
 488         if (pctx->op.kex.exchange != NULL) {
 489             rctx->op.kex.exchange = pctx->op.kex.exchange;
 490             if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange))
 491                 goto err;
 492         }
 493         if (pctx->op.kex.exchprovctx != NULL) {
 494             if (!ossl_assert(pctx->op.kex.exchange != NULL))
 495                 goto err;
 496             rctx->op.kex.exchprovctx
 497                 = pctx->op.kex.exchange->dupctx(pctx->op.kex.exchprovctx);
 498             if (rctx->op.kex.exchprovctx == NULL) {
 499                 EVP_KEYEXCH_free(rctx->op.kex.exchange);
 500                 goto err;
 501             }
 502             return rctx;
 503         }
 504     } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
 505         if (pctx->op.sig.signature != NULL) {
 506             rctx->op.sig.signature = pctx->op.sig.signature;
 507             if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature))
 508                 goto err;
 509         }
 510         if (pctx->op.sig.sigprovctx != NULL) {
 511             if (!ossl_assert(pctx->op.sig.signature != NULL))
 512                 goto err;
 513             rctx->op.sig.sigprovctx
 514                 = pctx->op.sig.signature->dupctx(pctx->op.sig.sigprovctx);
 515             if (rctx->op.sig.sigprovctx == NULL) {
 516                 EVP_SIGNATURE_free(rctx->op.sig.signature);
 517                 goto err;
 518             }
 519             return rctx;
 520         }
 521     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
 522         if (pctx->op.ciph.cipher != NULL) {
 523             rctx->op.ciph.cipher = pctx->op.ciph.cipher;
 524             if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher))
 525                 goto err;
 526         }
 527         if (pctx->op.ciph.ciphprovctx != NULL) {
 528             if (!ossl_assert(pctx->op.ciph.cipher != NULL))
 529                 goto err;
 530             rctx->op.ciph.ciphprovctx
 531                 = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.ciphprovctx);
 532             if (rctx->op.ciph.ciphprovctx == NULL) {
 533                 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
 534                 goto err;
 535             }
 536             return rctx;
 537         }
 538     } else if (EVP_PKEY_CTX_IS_KEM_OP(pctx)) {
 539         if (pctx->op.encap.kem != NULL) {
 540             rctx->op.encap.kem = pctx->op.encap.kem;
 541             if (!EVP_KEM_up_ref(rctx->op.encap.kem))
 542                 goto err;
 543         }
 544         if (pctx->op.encap.kemprovctx != NULL) {
 545             if (!ossl_assert(pctx->op.encap.kem != NULL))
 546                 goto err;
 547             rctx->op.encap.kemprovctx
 548                 = pctx->op.encap.kem->dupctx(pctx->op.encap.kemprovctx);
 549             if (rctx->op.encap.kemprovctx == NULL) {
 550                 EVP_KEM_free(rctx->op.encap.kem);
 551                 goto err;
 552             }
 553             return rctx;
 554         }
 555     } else if (EVP_PKEY_CTX_IS_GEN_OP(pctx)) {
 556         /* Not supported - This would need a gen_dupctx() to work */
 557         goto err;
 558     }
 559
 560     rctx->pmeth = pctx->pmeth;
 561 # ifndef OPENSSL_NO_ENGINE
 562     rctx->engine = pctx->engine;
 563 # endif
 564
 565     if (pctx->peerkey != NULL)
 566         EVP_PKEY_up_ref(pctx->peerkey);
 567     rctx->peerkey = pctx->peerkey;
 568
 569     if (pctx->pmeth == NULL) {
 570         if (rctx->operation == EVP_PKEY_OP_UNDEFINED) {
 571             EVP_KEYMGMT *tmp_keymgmt = pctx->keymgmt;
 572             void *provkey;
 573
 574             provkey = evp_pkey_export_to_provider(pctx->pkey, pctx->libctx,
 575                                                   &tmp_keymgmt, pctx->propquery);
 576             if (provkey == NULL)
 577                 goto err;
 578             if (!EVP_KEYMGMT_up_ref(tmp_keymgmt))
 579                 goto err;
 580             EVP_KEYMGMT_free(rctx->keymgmt);
 581             rctx->keymgmt = tmp_keymgmt;
 582             return rctx;
 583         }
 584     } else if (pctx->pmeth->copy(rctx, pctx) > 0) {
 585         return rctx;
 586     }
 587 err:
 588     rctx->pmeth = NULL;
 589     EVP_PKEY_CTX_free(rctx);
 590     return NULL;
 591 }
 592
 593 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 594 {
 595     if (app_pkey_methods == NULL) {
 596         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 597         if (app_pkey_methods == NULL){
 598             ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 599             return 0;
 600         }
 601     }
 602     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 603         ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
 604         return 0;
 605     }
 606     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 607     return 1;
 608 }
 609
 610 void evp_app_cleanup_int(void)
 611 {
 612     if (app_pkey_methods != NULL)
 613         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 614 }
 615
 616 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 617 {
 618     const EVP_PKEY_METHOD *ret;
 619
 620     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 621
 622     return ret == NULL ? 0 : 1;
 623 }
 624
 625 size_t EVP_PKEY_meth_get_count(void)
 626 {
 627     size_t rv = OSSL_NELEM(standard_methods);
 628
 629     if (app_pkey_methods)
 630         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 631     return rv;
 632 }
 633
 634 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 635 {
 636     if (idx < OSSL_NELEM(standard_methods))
 637         return (standard_methods[idx])();
 638     if (app_pkey_methods == NULL)
 639         return NULL;
 640     idx -= OSSL_NELEM(standard_methods);
 641     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 642         return NULL;
 643     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 644 }
 645 #endif
 646
 647 int EVP_PKEY_CTX_is_a(EVP_PKEY_CTX *ctx, const char *keytype)
 648 {
 649 #ifndef FIPS_MODULE
 650     if (evp_pkey_ctx_is_legacy(ctx))
 651         return (ctx->pmeth->pkey_id == evp_pkey_name2type(keytype));
 652 #endif
 653     return EVP_KEYMGMT_is_a(ctx->keymgmt, keytype);
 654 }
 655
 656 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 657 {
 658     switch (evp_pkey_ctx_state(ctx)) {
 659     case EVP_PKEY_STATE_PROVIDER:
 660         if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 661             && ctx->op.kex.exchange != NULL
 662             && ctx->op.kex.exchange->set_ctx_params != NULL)
 663             return
 664                 ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.exchprovctx,
 665                                                      params);
 666         if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 667             && ctx->op.sig.signature != NULL
 668             && ctx->op.sig.signature->set_ctx_params != NULL)
 669             return
 670                 ctx->op.sig.signature->set_ctx_params(ctx->op.sig.sigprovctx,
 671                                                       params);
 672         if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 673             && ctx->op.ciph.cipher != NULL
 674             && ctx->op.ciph.cipher->set_ctx_params != NULL)
 675             return
 676                 ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.ciphprovctx,
 677                                                     params);
 678         if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 679             && ctx->keymgmt != NULL
 680             && ctx->keymgmt->gen_set_params != NULL)
 681             return
 682                 evp_keymgmt_gen_set_params(ctx->keymgmt, ctx->op.keymgmt.genctx,
 683                                            params);
 684         if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 685             && ctx->op.encap.kem != NULL
 686             && ctx->op.encap.kem->set_ctx_params != NULL)
 687             return
 688                 ctx->op.encap.kem->set_ctx_params(ctx->op.encap.kemprovctx,
 689                                                   params);
 690         break;
 691 #ifndef FIPS_MODULE
 692     case EVP_PKEY_STATE_UNKNOWN:
 693     case EVP_PKEY_STATE_LEGACY:
 694         return evp_pkey_ctx_set_params_to_ctrl(ctx, params);
 695 #endif
 696     }
 697     return 0;
 698 }
 699
 700 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 701 {
 702     switch (evp_pkey_ctx_state(ctx)) {
 703     case EVP_PKEY_STATE_PROVIDER:
 704         if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 705             && ctx->op.kex.exchange != NULL
 706             && ctx->op.kex.exchange->get_ctx_params != NULL)
 707             return
 708                 ctx->op.kex.exchange->get_ctx_params(ctx->op.kex.exchprovctx,
 709                                                      params);
 710         if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 711             && ctx->op.sig.signature != NULL
 712             && ctx->op.sig.signature->get_ctx_params != NULL)
 713             return
 714                 ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx,
 715                                                       params);
 716         if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 717             && ctx->op.ciph.cipher != NULL
 718             && ctx->op.ciph.cipher->get_ctx_params != NULL)
 719             return
 720                 ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.ciphprovctx,
 721                                                     params);
 722         if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 723             && ctx->op.encap.kem != NULL
 724             && ctx->op.encap.kem->get_ctx_params != NULL)
 725             return
 726                 ctx->op.encap.kem->get_ctx_params(ctx->op.encap.kemprovctx,
 727                                                   params);
 728         break;
 729 #ifndef FIPS_MODULE
 730     case EVP_PKEY_STATE_UNKNOWN:
 731     case EVP_PKEY_STATE_LEGACY:
 732         return evp_pkey_ctx_get_params_to_ctrl(ctx, params);
 733 #endif
 734     }
 735     return 0;
 736 }
 737
 738 #ifndef FIPS_MODULE
 739 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx)
 740 {
 741     void *provctx;
 742
 743     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 744             && ctx->op.kex.exchange != NULL
 745             && ctx->op.kex.exchange->gettable_ctx_params != NULL) {
 746         provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
 747         return ctx->op.kex.exchange->gettable_ctx_params(provctx);
 748     }
 749     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 750             && ctx->op.sig.signature != NULL
 751             && ctx->op.sig.signature->gettable_ctx_params != NULL) {
 752         provctx = ossl_provider_ctx(
 753                       EVP_SIGNATURE_provider(ctx->op.sig.signature));
 754         return ctx->op.sig.signature->gettable_ctx_params(provctx);
 755     }
 756     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 757             && ctx->op.ciph.cipher != NULL
 758             && ctx->op.ciph.cipher->gettable_ctx_params != NULL) {
 759         provctx = ossl_provider_ctx(
 760                       EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
 761         return ctx->op.ciph.cipher->gettable_ctx_params(provctx);
 762     }
 763     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 764         && ctx->op.encap.kem != NULL
 765         && ctx->op.encap.kem->gettable_ctx_params != NULL) {
 766         provctx = ossl_provider_ctx(EVP_KEM_provider(ctx->op.encap.kem));
 767         return ctx->op.encap.kem->gettable_ctx_params(provctx);
 768     }
 769     return NULL;
 770 }
 771
 772 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx)
 773 {
 774     void *provctx;
 775
 776     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 777             && ctx->op.kex.exchange != NULL
 778             && ctx->op.kex.exchange->settable_ctx_params != NULL) {
 779         provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
 780         return ctx->op.kex.exchange->settable_ctx_params(provctx);
 781     }
 782     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 783             && ctx->op.sig.signature != NULL
 784             && ctx->op.sig.signature->settable_ctx_params != NULL) {
 785         provctx = ossl_provider_ctx(
 786                       EVP_SIGNATURE_provider(ctx->op.sig.signature));
 787         return ctx->op.sig.signature->settable_ctx_params(provctx);
 788     }
 789     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 790             && ctx->op.ciph.cipher != NULL
 791             && ctx->op.ciph.cipher->settable_ctx_params != NULL) {
 792         provctx = ossl_provider_ctx(
 793                       EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
 794         return ctx->op.ciph.cipher->settable_ctx_params(provctx);
 795     }
 796     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 797             && ctx->keymgmt != NULL)
 798         return EVP_KEYMGMT_gen_settable_params(ctx->keymgmt);
 799     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 800         && ctx->op.encap.kem != NULL
 801         && ctx->op.encap.kem->settable_ctx_params != NULL) {
 802         provctx = ossl_provider_ctx(EVP_KEM_provider(ctx->op.encap.kem));
 803         return ctx->op.encap.kem->settable_ctx_params(provctx);
 804     }
 805     return NULL;
 806 }
 807
 808 /*
 809  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
 810  *
 811  * Return 1 on success, 0 or negative for errors.
 812  *
 813  * In particular they return -2 if any of the params is not supported.
 814  *
 815  * They are not available in FIPS_MODULE as they depend on
 816  *      - EVP_PKEY_CTX_{get,set}_params()
 817  *      - EVP_PKEY_CTX_{gettable,settable}_params()
 818  *
 819  */
 820 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 821 {
 822     if (ctx == NULL || params == NULL)
 823         return 0;
 824
 825     /*
 826      * We only check for provider side EVP_PKEY_CTX.  For #legacy, we
 827      * depend on the translation that happens in EVP_PKEY_CTX_set_params()
 828      * call, and that the resulting ctrl call will return -2 if it doesn't
 829      * known the ctrl command number.
 830      */
 831     if (evp_pkey_ctx_is_provided(ctx)) {
 832         const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
 833         const OSSL_PARAM *p;
 834
 835         for (p = params; p->key != NULL; p++) {
 836             /* Check the ctx actually understands this parameter */
 837             if (OSSL_PARAM_locate_const(settable, p->key) == NULL )
 838                 return -2;
 839         }
 840     }
 841
 842     return EVP_PKEY_CTX_set_params(ctx, params);
 843 }
 844
 845 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 846 {
 847     if (ctx == NULL || params == NULL)
 848         return 0;
 849
 850     /*
 851      * We only check for provider side EVP_PKEY_CTX.  For #legacy, we
 852      * depend on the translation that happens in EVP_PKEY_CTX_get_params()
 853      * call, and that the resulting ctrl call will return -2 if it doesn't
 854      * known the ctrl command number.
 855      */
 856     if (evp_pkey_ctx_is_provided(ctx)) {
 857         const OSSL_PARAM *gettable = EVP_PKEY_CTX_gettable_params(ctx);
 858         const OSSL_PARAM *p;
 859
 860         for (p = params; p->key != NULL; p++ ) {
 861             /* Check the ctx actually understands this parameter */
 862             if (OSSL_PARAM_locate_const(gettable, p->key) == NULL )
 863                 return -2;
 864         }
 865     }
 866
 867     return EVP_PKEY_CTX_get_params(ctx, params);
 868 }
 869
 870 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
 871 {
 872     OSSL_PARAM sig_md_params[2], *p = sig_md_params;
 873     /* 80 should be big enough */
 874     char name[80] = "";
 875     const EVP_MD *tmp;
 876
 877     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 878         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 879         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 880         return -2;
 881     }
 882
 883     /* TODO(3.0): Remove this eventually when no more legacy */
 884     if (ctx->op.sig.sigprovctx == NULL)
 885         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 886                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
 887
 888     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 889                                             name,
 890                                             sizeof(name));
 891     *p = OSSL_PARAM_construct_end();
 892
 893     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
 894         return 0;
 895
 896     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
 897     if (tmp == NULL)
 898         return 0;
 899
 900     *md = tmp;
 901
 902     return 1;
 903 }
 904
 905 static int evp_pkey_ctx_set_md(EVP_PKEY_CTX *ctx, const EVP_MD *md,
 906                                int fallback, const char *param, int op,
 907                                int ctrl)
 908 {
 909     OSSL_PARAM md_params[2], *p = md_params;
 910     const char *name;
 911
 912     if (ctx == NULL || (ctx->operation & op) == 0) {
 913         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 914         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 915         return -2;
 916     }
 917
 918     /* TODO(3.0): Remove this eventually when no more legacy */
 919     if (fallback)
 920         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, 0, (void *)(md));
 921
 922     if (md == NULL) {
 923         name = "";
 924     } else {
 925         name = EVP_MD_name(md);
 926     }
 927
 928     *p++ = OSSL_PARAM_construct_utf8_string(param,
 929                                             /*
 930                                              * Cast away the const. This is read
 931                                              * only so should be safe
 932                                              */
 933                                             (char *)name, 0);
 934     *p = OSSL_PARAM_construct_end();
 935
 936     return EVP_PKEY_CTX_set_params(ctx, md_params);
 937 }
 938
 939 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 940 {
 941     return evp_pkey_ctx_set_md(ctx, md, ctx->op.sig.sigprovctx == NULL,
 942                                OSSL_SIGNATURE_PARAM_DIGEST,
 943                                EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD);
 944 }
 945
 946 int EVP_PKEY_CTX_set_tls1_prf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 947 {
 948     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.exchprovctx == NULL,
 949                                OSSL_KDF_PARAM_DIGEST,
 950                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_TLS_MD);
 951 }
 952
 953 static int evp_pkey_ctx_set1_octet_string(EVP_PKEY_CTX *ctx, int fallback,
 954                                           const char *param, int op, int ctrl,
 955                                           const unsigned char *data,
 956                                           int datalen)
 957 {
 958     OSSL_PARAM octet_string_params[2], *p = octet_string_params;
 959
 960     if (ctx == NULL || (ctx->operation & op) == 0) {
 961         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 962         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 963         return -2;
 964     }
 965
 966     /* TODO(3.0): Remove this eventually when no more legacy */
 967     if (fallback)
 968         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, datalen, (void *)(data));
 969
 970     if (datalen < 0) {
 971         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_LENGTH);
 972         return 0;
 973     }
 974
 975     *p++ = OSSL_PARAM_construct_octet_string(param,
 976                                             /*
 977                                              * Cast away the const. This is read
 978                                              * only so should be safe
 979                                              */
 980                                             (unsigned char *)data,
 981                                             (size_t)datalen);
 982     *p = OSSL_PARAM_construct_end();
 983
 984     return EVP_PKEY_CTX_set_params(ctx, octet_string_params);
 985 }
 986
 987 int EVP_PKEY_CTX_set1_tls1_prf_secret(EVP_PKEY_CTX *ctx,
 988                                       const unsigned char *sec, int seclen)
 989 {
 990     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 991                                           OSSL_KDF_PARAM_SECRET,
 992                                           EVP_PKEY_OP_DERIVE,
 993                                           EVP_PKEY_CTRL_TLS_SECRET,
 994                                           sec, seclen);
 995 }
 996
 997 int EVP_PKEY_CTX_add1_tls1_prf_seed(EVP_PKEY_CTX *ctx,
 998                                     const unsigned char *seed, int seedlen)
 999 {
1000     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1001                                           OSSL_KDF_PARAM_SEED,
1002                                           EVP_PKEY_OP_DERIVE,
1003                                           EVP_PKEY_CTRL_TLS_SEED,
1004                                           seed, seedlen);
1005 }
1006
1007 int EVP_PKEY_CTX_set_hkdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
1008 {
1009     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.exchprovctx == NULL,
1010                                OSSL_KDF_PARAM_DIGEST,
1011                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_HKDF_MD);
1012 }
1013
1014 int EVP_PKEY_CTX_set1_hkdf_salt(EVP_PKEY_CTX *ctx,
1015                                 const unsigned char *salt, int saltlen)
1016 {
1017     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1018                                           OSSL_KDF_PARAM_SALT,
1019                                           EVP_PKEY_OP_DERIVE,
1020                                           EVP_PKEY_CTRL_HKDF_SALT,
1021                                           salt, saltlen);
1022 }
1023
1024 int EVP_PKEY_CTX_set1_hkdf_key(EVP_PKEY_CTX *ctx,
1025                                       const unsigned char *key, int keylen)
1026 {
1027     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1028                                           OSSL_KDF_PARAM_KEY,
1029                                           EVP_PKEY_OP_DERIVE,
1030                                           EVP_PKEY_CTRL_HKDF_KEY,
1031                                           key, keylen);
1032 }
1033
1034 int EVP_PKEY_CTX_add1_hkdf_info(EVP_PKEY_CTX *ctx,
1035                                       const unsigned char *info, int infolen)
1036 {
1037     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1038                                           OSSL_KDF_PARAM_INFO,
1039                                           EVP_PKEY_OP_DERIVE,
1040                                           EVP_PKEY_CTRL_HKDF_INFO,
1041                                           info, infolen);
1042 }
1043
1044 int EVP_PKEY_CTX_hkdf_mode(EVP_PKEY_CTX *ctx, int mode)
1045 {
1046     OSSL_PARAM int_params[2], *p = int_params;
1047
1048     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1049         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1050         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1051         return -2;
1052     }
1053
1054     /* TODO(3.0): Remove this eventually when no more legacy */
1055     if (ctx->op.kex.exchprovctx == NULL)
1056         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_DERIVE,
1057                                  EVP_PKEY_CTRL_HKDF_MODE, mode, NULL);
1058
1059
1060     if (mode < 0) {
1061         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1062         return 0;
1063     }
1064
1065     *p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_MODE, &mode);
1066     *p = OSSL_PARAM_construct_end();
1067
1068     return EVP_PKEY_CTX_set_params(ctx, int_params);
1069 }
1070
1071 int EVP_PKEY_CTX_set1_pbe_pass(EVP_PKEY_CTX *ctx, const char *pass,
1072                                int passlen)
1073 {
1074     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1075                                           OSSL_KDF_PARAM_PASSWORD,
1076                                           EVP_PKEY_OP_DERIVE,
1077                                           EVP_PKEY_CTRL_PASS,
1078                                           (const unsigned char *)pass, passlen);
1079 }
1080
1081 int EVP_PKEY_CTX_set1_scrypt_salt(EVP_PKEY_CTX *ctx,
1082                                   const unsigned char *salt, int saltlen)
1083 {
1084     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1085                                           OSSL_KDF_PARAM_SALT,
1086                                           EVP_PKEY_OP_DERIVE,
1087                                           EVP_PKEY_CTRL_SCRYPT_SALT,
1088                                           salt, saltlen);
1089 }
1090
1091 static int evp_pkey_ctx_set_uint64(EVP_PKEY_CTX *ctx, const char *param,
1092                                    int op, int ctrl, uint64_t val)
1093 {
1094     OSSL_PARAM uint64_params[2], *p = uint64_params;
1095
1096     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1097         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1098         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1099         return -2;
1100     }
1101
1102     /* TODO(3.0): Remove this eventually when no more legacy */
1103     if (ctx->op.kex.exchprovctx == NULL)
1104         return EVP_PKEY_CTX_ctrl_uint64(ctx, -1, op, ctrl, val);
1105
1106     *p++ = OSSL_PARAM_construct_uint64(param, &val);
1107     *p = OSSL_PARAM_construct_end();
1108
1109     return EVP_PKEY_CTX_set_params(ctx, uint64_params);
1110 }
1111
1112 int EVP_PKEY_CTX_set_scrypt_N(EVP_PKEY_CTX *ctx, uint64_t n)
1113 {
1114     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_N,
1115                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_N,
1116                                    n);
1117 }
1118
1119 int EVP_PKEY_CTX_set_scrypt_r(EVP_PKEY_CTX *ctx, uint64_t r)
1120 {
1121     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_R,
1122                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_R,
1123                                    r);
1124 }
1125
1126 int EVP_PKEY_CTX_set_scrypt_p(EVP_PKEY_CTX *ctx, uint64_t p)
1127 {
1128     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_P,
1129                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_P,
1130                                    p);
1131 }
1132
1133 int EVP_PKEY_CTX_set_scrypt_maxmem_bytes(EVP_PKEY_CTX *ctx,
1134                                          uint64_t maxmem_bytes)
1135 {
1136     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_MAXMEM,
1137                                    EVP_PKEY_OP_DERIVE,
1138                                    EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES,
1139                                    maxmem_bytes);
1140 }
1141
1142 int EVP_PKEY_CTX_set_mac_key(EVP_PKEY_CTX *ctx, const unsigned char *key,
1143                              int keylen)
1144 {
1145     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.keymgmt.genctx == NULL,
1146                                           OSSL_PKEY_PARAM_PRIV_KEY,
1147                                           EVP_PKEY_OP_KEYGEN,
1148                                           EVP_PKEY_CTRL_SET_MAC_KEY,
1149                                           key, keylen);
1150 }
1151
1152 int EVP_PKEY_CTX_set_kem_op(EVP_PKEY_CTX *ctx, const char *op)
1153 {
1154     OSSL_PARAM params[2], *p = params;
1155
1156     if (ctx == NULL || op == NULL) {
1157         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1158         return 0;
1159     }
1160     if (!EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
1161         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1162         return -2;
1163     }
1164     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KEM_PARAM_OPERATION,
1165                                             (char *)op, 0);
1166     *p = OSSL_PARAM_construct_end();
1167     return EVP_PKEY_CTX_set_params(ctx, params);
1168 }
1169
1170 int evp_pkey_ctx_set1_id_prov(EVP_PKEY_CTX *ctx, const void *id, int len)
1171 {
1172     OSSL_PARAM params[2], *p = params;
1173     int ret;
1174
1175     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1176         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1177         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1178         return -2;
1179     }
1180
1181     *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_DIST_ID,
1182                                              /*
1183                                               * Cast away the const. This is
1184                                               * read only so should be safe
1185                                               */
1186                                              (void *)id, (size_t)len);
1187     *p++ = OSSL_PARAM_construct_end();
1188
1189     ret = evp_pkey_ctx_set_params_strict(ctx, params);
1190     if (ret == -2)
1191         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1192     return ret;
1193 }
1194
1195 int EVP_PKEY_CTX_set1_id(EVP_PKEY_CTX *ctx, const void *id, int len)
1196 {
1197     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1198                              EVP_PKEY_CTRL_SET1_ID, (int)len, (void*)(id));
1199 }
1200
1201 static int get1_id_data(EVP_PKEY_CTX *ctx, void *id, size_t *id_len)
1202 {
1203     int ret;
1204     void *tmp_id = NULL;
1205     OSSL_PARAM params[2], *p = params;
1206
1207     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1208         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1209         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1210         return -2;
1211     }
1212
1213     *p++ = OSSL_PARAM_construct_octet_ptr(OSSL_PKEY_PARAM_DIST_ID,
1214                                           &tmp_id, 0);
1215     *p++ = OSSL_PARAM_construct_end();
1216
1217     ret = evp_pkey_ctx_get_params_strict(ctx, params);
1218     if (ret == -2) {
1219         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1220     } else if (ret > 0) {
1221         size_t tmp_id_len = params[0].return_size;
1222
1223         if (id != NULL)
1224             memcpy(id, tmp_id, tmp_id_len);
1225         if (id_len != NULL)
1226             *id_len = tmp_id_len;
1227     }
1228     return ret;
1229 }
1230
1231 int evp_pkey_ctx_get1_id_prov(EVP_PKEY_CTX *ctx, void *id)
1232 {
1233     return get1_id_data(ctx, id, NULL);
1234 }
1235
1236 int evp_pkey_ctx_get1_id_len_prov(EVP_PKEY_CTX *ctx, size_t *id_len)
1237 {
1238     return get1_id_data(ctx, NULL, id_len);
1239 }
1240
1241 int EVP_PKEY_CTX_get1_id(EVP_PKEY_CTX *ctx, void *id)
1242 {
1243     return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_GET1_ID, 0, (void*)id);
1244 }
1245
1246 int EVP_PKEY_CTX_get1_id_len(EVP_PKEY_CTX *ctx, size_t *id_len)
1247 {
1248     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1249                              EVP_PKEY_CTRL_GET1_ID_LEN, 0, (void*)id_len);
1250 }
1251
1252 static int evp_pkey_ctx_ctrl_int(EVP_PKEY_CTX *ctx, int keytype, int optype,
1253                                  int cmd, int p1, void *p2)
1254 {
1255     int ret = 0;
1256
1257     /*
1258      * If the method has a |digest_custom| function, we can relax the
1259      * operation type check, since this can be called before the operation
1260      * is initialized.
1261      */
1262     if (ctx->pmeth == NULL || ctx->pmeth->digest_custom == NULL) {
1263         if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
1264             ERR_raise(ERR_LIB_EVP, EVP_R_NO_OPERATION_SET);
1265             return -1;
1266         }
1267
1268         if ((optype != -1) && !(ctx->operation & optype)) {
1269             ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1270             return -1;
1271         }
1272     }
1273
1274     switch (evp_pkey_ctx_state(ctx)) {
1275     case EVP_PKEY_STATE_PROVIDER:
1276         return evp_pkey_ctx_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
1277     case EVP_PKEY_STATE_UNKNOWN:
1278     case EVP_PKEY_STATE_LEGACY:
1279         if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
1280             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1281             return -2;
1282         }
1283         if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
1284             return -1;
1285
1286         ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
1287
1288         if (ret == -2)
1289             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1290         break;
1291     }
1292     return ret;
1293 }
1294
1295 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
1296                       int cmd, int p1, void *p2)
1297 {
1298     int ret = 0;
1299
1300     if (ctx == NULL) {
1301         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1302         return -2;
1303     }
1304     /* If unsupported, we don't want that reported here */
1305     ERR_set_mark();
1306     ret = evp_pkey_ctx_store_cached_data(ctx, keytype, optype,
1307                                          cmd, NULL, p2, p1);
1308     if (ret == -2) {
1309         ERR_pop_to_mark();
1310     } else {
1311         ERR_clear_last_mark();
1312         /*
1313          * If there was an error, there was an error.
1314          * If the operation isn't initialized yet, we also return, as
1315          * the saved values will be used then anyway.
1316          */
1317         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1318             return ret;
1319     }
1320     return evp_pkey_ctx_ctrl_int(ctx, keytype, optype, cmd, p1, p2);
1321 }
1322
1323 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
1324                              int cmd, uint64_t value)
1325 {
1326     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
1327 }
1328
1329 <<<<<<< HEAD
1330 =======
1331 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
1332                                     const char *value)
1333 {
1334     if (strcmp(name, "md") == 0)
1335         name = OSSL_ALG_PARAM_DIGEST;
1336     else if (strcmp(name, "rsa_padding_mode") == 0)
1337         name = OSSL_ASYM_CIPHER_PARAM_PAD_MODE;
1338     else if (strcmp(name, "rsa_mgf1_md") == 0)
1339         name = OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST;
1340     else if (strcmp(name, "rsa_oaep_md") == 0)
1341         name = OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST;
1342     else if (strcmp(name, "rsa_oaep_label") == 0)
1343         name = OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL;
1344     else if (strcmp(name, "rsa_pss_saltlen") == 0)
1345         name = OSSL_SIGNATURE_PARAM_PSS_SALTLEN;
1346     else if (strcmp(name, "rsa_keygen_bits") == 0)
1347         name = OSSL_PKEY_PARAM_RSA_BITS;
1348     else if (strcmp(name, "rsa_keygen_pubexp") == 0)
1349         name = OSSL_PKEY_PARAM_RSA_E;
1350     else if (strcmp(name, "rsa_keygen_primes") == 0)
1351         name = OSSL_PKEY_PARAM_RSA_PRIMES;
1352     else if (strcmp(name, "rsa_pss_keygen_md") == 0)
1353         name = OSSL_PKEY_PARAM_RSA_DIGEST;
1354     else if (strcmp(name, "rsa_pss_keygen_mgf1_md") == 0)
1355         name = OSSL_PKEY_PARAM_RSA_MGF1_DIGEST;
1356     else if (strcmp(name, "rsa_pss_keygen_saltlen") == 0)
1357         name = OSSL_PKEY_PARAM_RSA_PSS_SALTLEN;
1358     else if (strcmp(name, "dsa_paramgen_bits") == 0)
1359         name = OSSL_PKEY_PARAM_FFC_PBITS;
1360     else if (strcmp(name, "dsa_paramgen_q_bits") == 0)
1361         name = OSSL_PKEY_PARAM_FFC_QBITS;
1362     else if (strcmp(name, "dsa_paramgen_md") == 0)
1363         name = OSSL_PKEY_PARAM_FFC_DIGEST;
1364     else if (strcmp(name, "dh_paramgen_generator") == 0)
1365         name = OSSL_PKEY_PARAM_DH_GENERATOR;
1366     else if (strcmp(name, "dh_paramgen_prime_len") == 0)
1367         name = OSSL_PKEY_PARAM_FFC_PBITS;
1368     else if (strcmp(name, "dh_paramgen_subprime_len") == 0)
1369         name = OSSL_PKEY_PARAM_FFC_QBITS;
1370     else if (strcmp(name, "dh_paramgen_type") == 0) {
1371         name = OSSL_PKEY_PARAM_FFC_TYPE;
1372         value = ossl_dh_gen_type_id2name(atoi(value));
1373     } else if (strcmp(name, "dh_param") == 0)
1374         name = OSSL_PKEY_PARAM_GROUP_NAME;
1375     else if (strcmp(name, "dh_rfc5114") == 0) {
1376         int num = atoi(value);
1377
1378         name = OSSL_PKEY_PARAM_GROUP_NAME;
1379         value =
1380             ossl_ffc_named_group_get_name(ossl_ffc_uid_to_dh_named_group(num));
1381     } else if (strcmp(name, "dh_pad") == 0)
1382         name = OSSL_EXCHANGE_PARAM_PAD;
1383     else if (strcmp(name, "ec_paramgen_curve") == 0)
1384         name = OSSL_PKEY_PARAM_GROUP_NAME;
1385     else if (strcmp(name, "ecdh_cofactor_mode") == 0)
1386         name = OSSL_EXCHANGE_PARAM_EC_ECDH_COFACTOR_MODE;
1387     else if (strcmp(name, "ecdh_kdf_md") == 0)
1388         name = OSSL_EXCHANGE_PARAM_KDF_DIGEST;
1389     else if (strcmp(name, "ec_param_enc") == 0)
1390         name = OSSL_PKEY_PARAM_EC_ENCODING;
1391     else if (strcmp(name, "N") == 0)
1392         name = OSSL_KDF_PARAM_SCRYPT_N;
1393
1394     {
1395         /*
1396          * TODO(3.0) reduce the code above to only translate known legacy
1397          * string to the corresponding core name (see core_names.h), but
1398          * otherwise leave it to this code block to do the actual work.
1399          */
1400         const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
1401         OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
1402         int rv = 0;
1403         int exists = 0;
1404
1405         if (!OSSL_PARAM_allocate_from_text(&params[0], settable, name, value,
1406                                            strlen(value), &exists)) {
1407             if (!exists) {
1408                 ERR_raise_data(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED,
1409                                "name=%s,value=%s", name, value);
1410                 return -2;
1411             }
1412             return 0;
1413         }
1414         if (EVP_PKEY_CTX_set_params(ctx, params))
1415             rv = 1;
1416         OPENSSL_free(params[0].data);
1417         return rv;
1418     }
1419 }
1420
1421 >>>>>>> 4651c47010... Fix external symbols related to dh keys
1422 static int evp_pkey_ctx_ctrl_str_int(EVP_PKEY_CTX *ctx,
1423                                      const char *name, const char *value)
1424 {
1425     int ret = 0;
1426
1427     if (ctx == NULL) {
1428         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1429         return -2;
1430     }
1431
1432     switch (evp_pkey_ctx_state(ctx)) {
1433     case EVP_PKEY_STATE_PROVIDER:
1434         return evp_pkey_ctx_ctrl_str_to_param(ctx, name, value);
1435     case EVP_PKEY_STATE_UNKNOWN:
1436     case EVP_PKEY_STATE_LEGACY:
1437         if (ctx == NULL || ctx->pmeth == NULL || ctx->pmeth->ctrl_str == NULL) {
1438             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1439             return -2;
1440         }
1441         if (strcmp(name, "digest") == 0)
1442             ret = EVP_PKEY_CTX_md(ctx,
1443                                   EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT,
1444                                   EVP_PKEY_CTRL_MD, value);
1445         else
1446             ret = ctx->pmeth->ctrl_str(ctx, name, value);
1447         break;
1448     }
1449
1450     return ret;
1451 }
1452
1453 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
1454                           const char *name, const char *value)
1455 {
1456     int ret = 0;
1457
1458     /* If unsupported, we don't want that reported here */
1459     ERR_set_mark();
1460     ret = evp_pkey_ctx_store_cached_data(ctx, -1, -1, -1,
1461                                          name, value, strlen(value) + 1);
1462     if (ret == -2) {
1463         ERR_pop_to_mark();
1464     } else {
1465         ERR_clear_last_mark();
1466         /*
1467          * If there was an error, there was an error.
1468          * If the operation isn't initialized yet, we also return, as
1469          * the saved values will be used then anyway.
1470          */
1471         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1472             return ret;
1473     }
1474
1475     return evp_pkey_ctx_ctrl_str_int(ctx, name, value);
1476 }
1477
1478 static int decode_cmd(int cmd, const char *name)
1479 {
1480     if (cmd == -1) {
1481         /*
1482          * The consequence of the assertion not being true is that this
1483          * function will return -1, which will cause the calling functions
1484          * to signal that the command is unsupported...  in non-debug mode.
1485          */
1486         if (ossl_assert(name != NULL))
1487             if (strcmp(name, "distid") == 0 || strcmp(name, "hexdistid") == 0)
1488                 cmd = EVP_PKEY_CTRL_SET1_ID;
1489     }
1490
1491     return cmd;
1492 }
1493
1494 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
1495                                           int keytype, int optype,
1496                                           int cmd, const char *name,
1497                                           const void *data, size_t data_len)
1498 {
1499     /*
1500      * Check that it's one of the supported commands.  The ctrl commands
1501      * number cases here must correspond to the cases in the bottom switch
1502      * in this function.
1503      */
1504     switch (cmd = decode_cmd(cmd, name)) {
1505     case EVP_PKEY_CTRL_SET1_ID:
1506         break;
1507     default:
1508         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1509         return -2;
1510     }
1511
1512     if (keytype != -1) {
1513         switch (evp_pkey_ctx_state(ctx)) {
1514         case EVP_PKEY_STATE_PROVIDER:
1515             if (ctx->keymgmt == NULL) {
1516                 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1517                 return -2;
1518             }
1519             if (!EVP_KEYMGMT_is_a(ctx->keymgmt,
1520                                   evp_pkey_type2name(keytype))) {
1521                 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1522                 return -1;
1523             }
1524             break;
1525         case EVP_PKEY_STATE_UNKNOWN:
1526         case EVP_PKEY_STATE_LEGACY:
1527             if (ctx->pmeth == NULL) {
1528                 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1529                 return -2;
1530             }
1531             if (EVP_PKEY_type(ctx->pmeth->pkey_id) != EVP_PKEY_type(keytype)) {
1532                 ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1533                 return -1;
1534             }
1535             break;
1536         }
1537     }
1538     if (optype != -1 && (ctx->operation & optype) == 0) {
1539         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1540         return -1;
1541     }
1542
1543     switch (cmd) {
1544     case EVP_PKEY_CTRL_SET1_ID:
1545         evp_pkey_ctx_free_cached_data(ctx, cmd, name);
1546         if (name != NULL) {
1547             ctx->cached_parameters.dist_id_name = OPENSSL_strdup(name);
1548             if (ctx->cached_parameters.dist_id_name == NULL) {
1549                 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1550                 return 0;
1551             }
1552         }
1553         if (data_len > 0) {
1554             ctx->cached_parameters.dist_id = OPENSSL_memdup(data, data_len);
1555             if (ctx->cached_parameters.dist_id == NULL) {
1556                 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1557                 return 0;
1558             }
1559         }
1560         ctx->cached_parameters.dist_id_set = 1;
1561         ctx->cached_parameters.dist_id_len = data_len;
1562         break;
1563     }
1564     return 1;
1565 }
1566
1567 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
1568                                           int cmd, const char *name)
1569 {
1570     cmd = decode_cmd(cmd, name);
1571     switch (cmd) {
1572     case EVP_PKEY_CTRL_SET1_ID:
1573         OPENSSL_free(ctx->cached_parameters.dist_id);
1574         OPENSSL_free(ctx->cached_parameters.dist_id_name);
1575         ctx->cached_parameters.dist_id = NULL;
1576         ctx->cached_parameters.dist_id_name = NULL;
1577         break;
1578     }
1579 }
1580
1581 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx)
1582 {
1583     evp_pkey_ctx_free_cached_data(ctx, EVP_PKEY_CTRL_SET1_ID, NULL);
1584 }
1585
1586 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx)
1587 {
1588     int ret = 1;
1589
1590     if (ret && ctx->cached_parameters.dist_id_set) {
1591         const char *name = ctx->cached_parameters.dist_id_name;
1592         const void *val = ctx->cached_parameters.dist_id;
1593         size_t len = ctx->cached_parameters.dist_id_len;
1594
1595         if (name != NULL)
1596             ret = evp_pkey_ctx_ctrl_str_int(ctx, name, val);
1597         else
1598             ret = evp_pkey_ctx_ctrl_int(ctx, -1, ctx->operation,
1599                                         EVP_PKEY_CTRL_SET1_ID,
1600                                         (int)len, (void *)val);
1601     }
1602
1603     return ret;
1604 }
1605
1606 OSSL_LIB_CTX *EVP_PKEY_CTX_get0_libctx(EVP_PKEY_CTX *ctx)
1607 {
1608     return ctx->libctx;
1609 }
1610
1611 const char *EVP_PKEY_CTX_get0_propq(EVP_PKEY_CTX *ctx)
1612 {
1613     return ctx->propquery;
1614 }
1615
1616 /* Utility functions to send a string of hex string to a ctrl */
1617
1618 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
1619 {
1620     size_t len;
1621
1622     len = strlen(str);
1623     if (len > INT_MAX)
1624         return -1;
1625     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
1626 }
1627
1628 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
1629 {
1630     unsigned char *bin;
1631     long binlen;
1632     int rv = -1;
1633
1634     bin = OPENSSL_hexstr2buf(hex, &binlen);
1635     if (bin == NULL)
1636         return 0;
1637     if (binlen <= INT_MAX)
1638         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
1639     OPENSSL_free(bin);
1640     return rv;
1641 }
1642
1643 /* Pass a message digest to a ctrl */
1644 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
1645 {
1646     const EVP_MD *m;
1647
1648     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
1649         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_DIGEST);
1650         return 0;
1651     }
1652     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
1653 }
1654
1655 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
1656 {
1657     return ctx->operation;
1658 }
1659
1660 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
1661 {
1662     ctx->keygen_info = dat;
1663     ctx->keygen_info_count = datlen;
1664 }
1665
1666 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
1667 {
1668     ctx->data = data;
1669 }
1670
1671 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
1672 {
1673     return ctx->data;
1674 }
1675
1676 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
1677 {
1678     return ctx->pkey;
1679 }
1680
1681 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
1682 {
1683     return ctx->peerkey;
1684 }
1685
1686 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
1687 {
1688     ctx->app_data = data;
1689 }
1690
1691 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
1692 {
1693     return ctx->app_data;
1694 }
1695
1696 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1697                             int (*init) (EVP_PKEY_CTX *ctx))
1698 {
1699     pmeth->init = init;
1700 }
1701
1702 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1703                             int (*copy) (EVP_PKEY_CTX *dst,
1704                                          const EVP_PKEY_CTX *src))
1705 {
1706     pmeth->copy = copy;
1707 }
1708
1709 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1710                                void (*cleanup) (EVP_PKEY_CTX *ctx))
1711 {
1712     pmeth->cleanup = cleanup;
1713 }
1714
1715 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1716                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1717                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
1718                                                  EVP_PKEY *pkey))
1719 {
1720     pmeth->paramgen_init = paramgen_init;
1721     pmeth->paramgen = paramgen;
1722 }
1723
1724 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1725                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
1726                               int (*keygen) (EVP_PKEY_CTX *ctx,
1727                                              EVP_PKEY *pkey))
1728 {
1729     pmeth->keygen_init = keygen_init;
1730     pmeth->keygen = keygen;
1731 }
1732
1733 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1734                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1735                             int (*sign) (EVP_PKEY_CTX *ctx,
1736                                          unsigned char *sig, size_t *siglen,
1737                                          const unsigned char *tbs,
1738                                          size_t tbslen))
1739 {
1740     pmeth->sign_init = sign_init;
1741     pmeth->sign = sign;
1742 }
1743
1744 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1745                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1746                               int (*verify) (EVP_PKEY_CTX *ctx,
1747                                              const unsigned char *sig,
1748                                              size_t siglen,
1749                                              const unsigned char *tbs,
1750                                              size_t tbslen))
1751 {
1752     pmeth->verify_init = verify_init;
1753     pmeth->verify = verify;
1754 }
1755
1756 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1757                                       int (*verify_recover_init) (EVP_PKEY_CTX
1758                                                                   *ctx),
1759                                       int (*verify_recover) (EVP_PKEY_CTX
1760                                                              *ctx,
1761                                                              unsigned char
1762                                                              *sig,
1763                                                              size_t *siglen,
1764                                                              const unsigned
1765                                                              char *tbs,
1766                                                              size_t tbslen))
1767 {
1768     pmeth->verify_recover_init = verify_recover_init;
1769     pmeth->verify_recover = verify_recover;
1770 }
1771
1772 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1773                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1774                                                     EVP_MD_CTX *mctx),
1775                                int (*signctx) (EVP_PKEY_CTX *ctx,
1776                                                unsigned char *sig,
1777                                                size_t *siglen,
1778                                                EVP_MD_CTX *mctx))
1779 {
1780     pmeth->signctx_init = signctx_init;
1781     pmeth->signctx = signctx;
1782 }
1783
1784 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1785                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1786                                                         EVP_MD_CTX *mctx),
1787                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1788                                                    const unsigned char *sig,
1789                                                    int siglen,
1790                                                    EVP_MD_CTX *mctx))
1791 {
1792     pmeth->verifyctx_init = verifyctx_init;
1793     pmeth->verifyctx = verifyctx;
1794 }
1795
1796 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1797                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1798                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1799                                                  unsigned char *out,
1800                                                  size_t *outlen,
1801                                                  const unsigned char *in,
1802                                                  size_t inlen))
1803 {
1804     pmeth->encrypt_init = encrypt_init;
1805     pmeth->encrypt = encryptfn;
1806 }
1807
1808 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1809                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1810                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1811                                                unsigned char *out,
1812                                                size_t *outlen,
1813                                                const unsigned char *in,
1814                                                size_t inlen))
1815 {
1816     pmeth->decrypt_init = decrypt_init;
1817     pmeth->decrypt = decrypt;
1818 }
1819
1820 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1821                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1822                               int (*derive) (EVP_PKEY_CTX *ctx,
1823                                              unsigned char *key,
1824                                              size_t *keylen))
1825 {
1826     pmeth->derive_init = derive_init;
1827     pmeth->derive = derive;
1828 }
1829
1830 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1831                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1832                                          void *p2),
1833                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1834                                              const char *type,
1835                                              const char *value))
1836 {
1837     pmeth->ctrl = ctrl;
1838     pmeth->ctrl_str = ctrl_str;
1839 }
1840
1841 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1842     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1843                        const unsigned char *tbs, size_t tbslen))
1844 {
1845     pmeth->digestsign = digestsign;
1846 }
1847
1848 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1849     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1850                          size_t siglen, const unsigned char *tbs,
1851                          size_t tbslen))
1852 {
1853     pmeth->digestverify = digestverify;
1854 }
1855
1856 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1857                              int (*check) (EVP_PKEY *pkey))
1858 {
1859     pmeth->check = check;
1860 }
1861
1862 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1863                                     int (*check) (EVP_PKEY *pkey))
1864 {
1865     pmeth->public_check = check;
1866 }
1867
1868 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1869                                    int (*check) (EVP_PKEY *pkey))
1870 {
1871     pmeth->param_check = check;
1872 }
1873
1874 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1875                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
1876                                                            EVP_MD_CTX *mctx))
1877 {
1878     pmeth->digest_custom = digest_custom;
1879 }
1880
1881 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1882                             int (**pinit) (EVP_PKEY_CTX *ctx))
1883 {
1884     *pinit = pmeth->init;
1885 }
1886
1887 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
1888                             int (**pcopy) (EVP_PKEY_CTX *dst,
1889                                            const EVP_PKEY_CTX *src))
1890 {
1891     *pcopy = pmeth->copy;
1892 }
1893
1894 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
1895                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
1896 {
1897     *pcleanup = pmeth->cleanup;
1898 }
1899
1900 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
1901                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
1902                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
1903                                                    EVP_PKEY *pkey))
1904 {
1905     if (pparamgen_init)
1906         *pparamgen_init = pmeth->paramgen_init;
1907     if (pparamgen)
1908         *pparamgen = pmeth->paramgen;
1909 }
1910
1911 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
1912                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
1913                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
1914                                                EVP_PKEY *pkey))
1915 {
1916     if (pkeygen_init)
1917         *pkeygen_init = pmeth->keygen_init;
1918     if (pkeygen)
1919         *pkeygen = pmeth->keygen;
1920 }
1921
1922 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
1923                             int (**psign_init) (EVP_PKEY_CTX *ctx),
1924                             int (**psign) (EVP_PKEY_CTX *ctx,
1925                                            unsigned char *sig, size_t *siglen,
1926                                            const unsigned char *tbs,
1927                                            size_t tbslen))
1928 {
1929     if (psign_init)
1930         *psign_init = pmeth->sign_init;
1931     if (psign)
1932         *psign = pmeth->sign;
1933 }
1934
1935 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
1936                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
1937                               int (**pverify) (EVP_PKEY_CTX *ctx,
1938                                                const unsigned char *sig,
1939                                                size_t siglen,
1940                                                const unsigned char *tbs,
1941                                                size_t tbslen))
1942 {
1943     if (pverify_init)
1944         *pverify_init = pmeth->verify_init;
1945     if (pverify)
1946         *pverify = pmeth->verify;
1947 }
1948
1949 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
1950                                       int (**pverify_recover_init) (EVP_PKEY_CTX
1951                                                                     *ctx),
1952                                       int (**pverify_recover) (EVP_PKEY_CTX
1953                                                                *ctx,
1954                                                                unsigned char
1955                                                                *sig,
1956                                                                size_t *siglen,
1957                                                                const unsigned
1958                                                                char *tbs,
1959                                                                size_t tbslen))
1960 {
1961     if (pverify_recover_init)
1962         *pverify_recover_init = pmeth->verify_recover_init;
1963     if (pverify_recover)
1964         *pverify_recover = pmeth->verify_recover;
1965 }
1966
1967 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
1968                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
1969                                                       EVP_MD_CTX *mctx),
1970                                int (**psignctx) (EVP_PKEY_CTX *ctx,
1971                                                  unsigned char *sig,
1972                                                  size_t *siglen,
1973                                                  EVP_MD_CTX *mctx))
1974 {
1975     if (psignctx_init)
1976         *psignctx_init = pmeth->signctx_init;
1977     if (psignctx)
1978         *psignctx = pmeth->signctx;
1979 }
1980
1981 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
1982                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
1983                                                           EVP_MD_CTX *mctx),
1984                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
1985                                                      const unsigned char *sig,
1986                                                      int siglen,
1987                                                      EVP_MD_CTX *mctx))
1988 {
1989     if (pverifyctx_init)
1990         *pverifyctx_init = pmeth->verifyctx_init;
1991     if (pverifyctx)
1992         *pverifyctx = pmeth->verifyctx;
1993 }
1994
1995 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
1996                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
1997                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
1998                                                    unsigned char *out,
1999                                                    size_t *outlen,
2000                                                    const unsigned char *in,
2001                                                    size_t inlen))
2002 {
2003     if (pencrypt_init)
2004         *pencrypt_init = pmeth->encrypt_init;
2005     if (pencryptfn)
2006         *pencryptfn = pmeth->encrypt;
2007 }
2008
2009 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
2010                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
2011                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
2012                                                  unsigned char *out,
2013                                                  size_t *outlen,
2014                                                  const unsigned char *in,
2015                                                  size_t inlen))
2016 {
2017     if (pdecrypt_init)
2018         *pdecrypt_init = pmeth->decrypt_init;
2019     if (pdecrypt)
2020         *pdecrypt = pmeth->decrypt;
2021 }
2022
2023 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
2024                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
2025                               int (**pderive) (EVP_PKEY_CTX *ctx,
2026                                                unsigned char *key,
2027                                                size_t *keylen))
2028 {
2029     if (pderive_init)
2030         *pderive_init = pmeth->derive_init;
2031     if (pderive)
2032         *pderive = pmeth->derive;
2033 }
2034
2035 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
2036                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
2037                                            void *p2),
2038                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
2039                                                const char *type,
2040                                                const char *value))
2041 {
2042     if (pctrl)
2043         *pctrl = pmeth->ctrl;
2044     if (pctrl_str)
2045         *pctrl_str = pmeth->ctrl_str;
2046 }
2047
2048 void EVP_PKEY_meth_get_digestsign(EVP_PKEY_METHOD *pmeth,
2049     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
2050                         const unsigned char *tbs, size_t tbslen))
2051 {
2052     if (digestsign)
2053         *digestsign = pmeth->digestsign;
2054 }
2055
2056 void EVP_PKEY_meth_get_digestverify(EVP_PKEY_METHOD *pmeth,
2057     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
2058                           size_t siglen, const unsigned char *tbs,
2059                           size_t tbslen))
2060 {
2061     if (digestverify)
2062         *digestverify = pmeth->digestverify;
2063 }
2064
2065 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
2066                              int (**pcheck) (EVP_PKEY *pkey))
2067 {
2068     if (pcheck != NULL)
2069         *pcheck = pmeth->check;
2070 }
2071
2072 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
2073                                     int (**pcheck) (EVP_PKEY *pkey))
2074 {
2075     if (pcheck != NULL)
2076         *pcheck = pmeth->public_check;
2077 }
2078
2079 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
2080                                    int (**pcheck) (EVP_PKEY *pkey))
2081 {
2082     if (pcheck != NULL)
2083         *pcheck = pmeth->param_check;
2084 }
2085
2086 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
2087                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
2088                                                              EVP_MD_CTX *mctx))
2089 {
2090     if (pdigest_custom != NULL)
2091         *pdigest_custom = pmeth->digest_custom;
2092 }
2093
2094 #endif /* FIPS_MODULE */