crypto/evp/pmeth_lib.c

   1 /*
   2  * Copyright 2006-2020 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 # ifndef OPENSSL_NO_RSA
  53     rsa_pkey_method,
  54 # endif
  55 # ifndef OPENSSL_NO_DH
  56     dh_pkey_method,
  57 # endif
  58 # ifndef OPENSSL_NO_DSA
  59     dsa_pkey_method,
  60 # endif
  61 # ifndef OPENSSL_NO_EC
  62     ec_pkey_method,
  63 # endif
  64 # ifndef OPENSSL_NO_RSA
  65     rsa_pss_pkey_method,
  66 # endif
  67 # ifndef OPENSSL_NO_DH
  68     dhx_pkey_method,
  69 # endif
  70 # ifndef OPENSSL_NO_EC
  71     ecx25519_pkey_method,
  72     ecx448_pkey_method,
  73 # endif
  74 # ifndef OPENSSL_NO_EC
  75     ed25519_pkey_method,
  76     ed448_pkey_method,
  77 # endif
  78 # ifndef OPENSSL_NO_SM2
  79     sm2_pkey_method,
  80 # endif
  81 };
  82
  83 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  84
  85 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
  86 {
  87     return ((*a)->pkey_id - ((**b)())->pkey_id);
  88 }
  89
  90 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  91
  92 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  93                      const EVP_PKEY_METHOD *const *b)
  94 {
  95     return ((*a)->pkey_id - (*b)->pkey_id);
  96 }
  97
  98 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
  99 {
 100     pmeth_fn *ret;
 101     EVP_PKEY_METHOD tmp;
 102     const EVP_PKEY_METHOD *t = &tmp;
 103
 104     tmp.pkey_id = type;
 105     if (app_pkey_methods) {
 106         int idx;
 107         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
 108         if (idx >= 0)
 109             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 110     }
 111     ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
 112                                  sizeof(standard_methods) /
 113                                  sizeof(pmeth_fn));
 114     if (ret == NULL || *ret == NULL)
 115         return NULL;
 116     return (**ret)();
 117 }
 118
 119 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 120 {
 121     EVP_PKEY_METHOD *pmeth;
 122
 123     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 124     if (pmeth == NULL) {
 125         EVPerr(EVP_F_EVP_PKEY_METH_NEW, ERR_R_MALLOC_FAILURE);
 126         return NULL;
 127     }
 128
 129     pmeth->pkey_id = id;
 130     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 131     return pmeth;
 132 }
 133
 134 /* Three possible states: */
 135 # define EVP_PKEY_STATE_UNKNOWN         0
 136 # define EVP_PKEY_STATE_LEGACY          1
 137 # define EVP_PKEY_STATE_PROVIDER        2
 138
 139 static int evp_pkey_ctx_state(EVP_PKEY_CTX *ctx)
 140 {
 141     if (ctx->operation == EVP_PKEY_OP_UNDEFINED)
 142         return EVP_PKEY_STATE_UNKNOWN;
 143
 144     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 145          && ctx->op.kex.exchprovctx != NULL)
 146         || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 147             && ctx->op.sig.sigprovctx != NULL)
 148         || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 149             && ctx->op.ciph.ciphprovctx != NULL)
 150         || (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 151             && ctx->op.keymgmt.genctx != NULL)
 152         || (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 153             && ctx->op.encap.kemprovctx != NULL))
 154         return EVP_PKEY_STATE_PROVIDER;
 155
 156     return EVP_PKEY_STATE_LEGACY;
 157 }
 158
 159 static void help_get_legacy_alg_type_from_keymgmt(const char *keytype,
 160                                                   void *arg)
 161 {
 162     int *type = arg;
 163
 164     if (*type == NID_undef)
 165         *type = evp_pkey_name2type(keytype);
 166 }
 167
 168 static int get_legacy_alg_type_from_keymgmt(const EVP_KEYMGMT *keymgmt)
 169 {
 170     int type = NID_undef;
 171
 172     EVP_KEYMGMT_names_do_all(keymgmt, help_get_legacy_alg_type_from_keymgmt,
 173                              &type);
 174     return type;
 175 }
 176 #endif /* FIPS_MODULE */
 177
 178 static EVP_PKEY_CTX *int_ctx_new(OPENSSL_CTX *libctx,
 179                                  EVP_PKEY *pkey, ENGINE *e,
 180                                  const char *keytype, const char *propquery,
 181                                  int id)
 182
 183 {
 184     EVP_PKEY_CTX *ret = NULL;
 185     const EVP_PKEY_METHOD *pmeth = NULL;
 186     EVP_KEYMGMT *keymgmt = NULL;
 187
 188     /*
 189      * If the given |pkey| is provided, we extract the keytype from its
 190      * keymgmt and skip over the legacy code.
 191      */
 192     if (pkey != NULL && evp_pkey_is_provided(pkey)) {
 193         /* If we have an engine, something went wrong somewhere... */
 194         if (!ossl_assert(e == NULL))
 195             return NULL;
 196         keytype = evp_first_name(pkey->keymgmt->prov, pkey->keymgmt->name_id);
 197         goto common;
 198     }
 199
 200 #ifndef FIPS_MODULE
 201     /*
 202      * TODO(3.0) This legacy code section should be removed when we stop
 203      * supporting engines
 204      */
 205     /* BEGIN legacy */
 206     if (id == -1) {
 207         if (pkey != NULL)
 208             id = pkey->type;
 209         else if (keytype != NULL)
 210             id = evp_pkey_name2type(keytype);
 211         if (id == NID_undef)
 212             id = -1;
 213     }
 214     /* If no ID was found here, we can only resort to find a keymgmt */
 215     if (id == -1)
 216         goto common;
 217
 218     /*
 219      * Here, we extract what information we can for the purpose of
 220      * supporting usage with implementations from providers, to make
 221      * for a smooth transition from legacy stuff to provider based stuff.
 222      *
 223      * If an engine is given, this is entirely legacy, and we should not
 224      * pretend anything else, so we only set the name when no engine is
 225      * given.  If both are already given, someone made a mistake, and
 226      * since that can only happen internally, it's safe to make an
 227      * assertion.
 228      */
 229     if (!ossl_assert(e == NULL || keytype == NULL))
 230         return NULL;
 231     if (e == NULL)
 232         keytype = OBJ_nid2sn(id);
 233
 234 # ifndef OPENSSL_NO_ENGINE
 235     if (e == NULL && pkey != NULL)
 236         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 237     /* Try to find an ENGINE which implements this method */
 238     if (e) {
 239         if (!ENGINE_init(e)) {
 240             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
 241             return NULL;
 242         }
 243     } else {
 244         e = ENGINE_get_pkey_meth_engine(id);
 245     }
 246
 247     /*
 248      * If an ENGINE handled this method look it up. Otherwise use internal
 249      * tables.
 250      */
 251     if (e != NULL)
 252         pmeth = ENGINE_get_pkey_meth(e, id);
 253     else
 254 # endif
 255         pmeth = EVP_PKEY_meth_find(id);
 256
 257     /* END legacy */
 258 #endif /* FIPS_MODULE */
 259  common:
 260     /*
 261      * If there's no engine and there's a name, we try fetching a provider
 262      * implementation.
 263      */
 264     if (e == NULL && keytype != NULL) {
 265         keymgmt = EVP_KEYMGMT_fetch(libctx, keytype, propquery);
 266         if (keymgmt == NULL)
 267             return NULL;   /* EVP_KEYMGMT_fetch() recorded an error */
 268
 269 #ifndef FIPS_MODULE
 270         /*
 271          * Chase down the legacy NID, as that might be needed for diverse
 272          * purposes, such as ensure that EVP_PKEY_type() can return sensible
 273          * values, or that there's a better chance to "downgrade" a key when
 274          * needed.  We go through all keymgmt names, because the keytype
 275          * that's passed to this function doesn't necessarily translate
 276          * directly.
 277          * TODO: Remove this when #legacy keys are gone.
 278          */
 279         if (keymgmt != NULL) {
 280             int tmp_id = get_legacy_alg_type_from_keymgmt(keymgmt);
 281
 282             if (tmp_id != NID_undef) {
 283                 if (id == -1) {
 284                     id = tmp_id;
 285                 } else {
 286                     /*
 287                      * It really really shouldn't differ.  If it still does,
 288                      * something is very wrong.
 289                      */
 290                     if (!ossl_assert(id == tmp_id)) {
 291                         EVPerr(EVP_F_INT_CTX_NEW, ERR_R_INTERNAL_ERROR);
 292                         EVP_KEYMGMT_free(keymgmt);
 293                         return NULL;
 294                     }
 295                 }
 296             }
 297         }
 298 #endif
 299     }
 300
 301     if (pmeth == NULL && keymgmt == NULL) {
 302         EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
 303     } else {
 304         ret = OPENSSL_zalloc(sizeof(*ret));
 305         if (ret == NULL)
 306             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
 307     }
 308
 309 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 310     if ((ret == NULL || pmeth == NULL) && e != NULL)
 311         ENGINE_finish(e);
 312 #endif
 313
 314     if (ret == NULL) {
 315         EVP_KEYMGMT_free(keymgmt);
 316         return NULL;
 317     }
 318
 319     ret->libctx = libctx;
 320     ret->propquery = propquery;
 321     ret->keytype = keytype;
 322     ret->keymgmt = keymgmt;
 323     ret->legacy_keytype = id;   /* TODO: Remove when #legacy key are gone */
 324     ret->engine = e;
 325     ret->pmeth = pmeth;
 326     ret->operation = EVP_PKEY_OP_UNDEFINED;
 327     ret->pkey = pkey;
 328     if (pkey != NULL)
 329         EVP_PKEY_up_ref(pkey);
 330
 331     if (pmeth != NULL && pmeth->init != NULL) {
 332         if (pmeth->init(ret) <= 0) {
 333             ret->pmeth = NULL;
 334             EVP_PKEY_CTX_free(ret);
 335             return NULL;
 336         }
 337     }
 338
 339     return ret;
 340 }
 341
 342 /*- All methods below can also be used in FIPS_MODULE */
 343
 344 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OPENSSL_CTX *libctx,
 345                                          const char *name,
 346                                          const char *propquery)
 347 {
 348     return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
 349 }
 350
 351 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OPENSSL_CTX *libctx, EVP_PKEY *pkey,
 352                                          const char *propquery)
 353 {
 354     return int_ctx_new(libctx, pkey, NULL, NULL, propquery, -1);
 355 }
 356
 357 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
 358 {
 359     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 360         if (ctx->op.sig.sigprovctx != NULL && ctx->op.sig.signature != NULL)
 361             ctx->op.sig.signature->freectx(ctx->op.sig.sigprovctx);
 362         EVP_SIGNATURE_free(ctx->op.sig.signature);
 363         ctx->op.sig.sigprovctx = NULL;
 364         ctx->op.sig.signature = NULL;
 365     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 366         if (ctx->op.kex.exchprovctx != NULL && ctx->op.kex.exchange != NULL)
 367             ctx->op.kex.exchange->freectx(ctx->op.kex.exchprovctx);
 368         EVP_KEYEXCH_free(ctx->op.kex.exchange);
 369         ctx->op.kex.exchprovctx = NULL;
 370         ctx->op.kex.exchange = NULL;
 371     } else if (EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
 372         if (ctx->op.encap.kemprovctx != NULL && ctx->op.encap.kem != NULL)
 373             ctx->op.encap.kem->freectx(ctx->op.encap.kemprovctx);
 374         EVP_KEM_free(ctx->op.encap.kem);
 375         ctx->op.encap.kemprovctx = NULL;
 376         ctx->op.encap.kem = NULL;
 377     }
 378     else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
 379         if (ctx->op.ciph.ciphprovctx != NULL && ctx->op.ciph.cipher != NULL)
 380             ctx->op.ciph.cipher->freectx(ctx->op.ciph.ciphprovctx);
 381         EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
 382         ctx->op.ciph.ciphprovctx = NULL;
 383         ctx->op.ciph.cipher = NULL;
 384     } else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
 385         if (ctx->op.keymgmt.genctx != NULL && ctx->keymgmt != NULL)
 386             evp_keymgmt_gen_cleanup(ctx->keymgmt, ctx->op.keymgmt.genctx);
 387     }
 388 }
 389
 390 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 391 {
 392     if (ctx == NULL)
 393         return;
 394     if (ctx->pmeth && ctx->pmeth->cleanup)
 395         ctx->pmeth->cleanup(ctx);
 396
 397     evp_pkey_ctx_free_old_ops(ctx);
 398 #ifndef FIPS_MODULE
 399     evp_pkey_ctx_free_all_cached_data(ctx);
 400 #endif
 401     EVP_KEYMGMT_free(ctx->keymgmt);
 402
 403     EVP_PKEY_free(ctx->pkey);
 404     EVP_PKEY_free(ctx->peerkey);
 405 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 406     ENGINE_finish(ctx->engine);
 407 #endif
 408     OPENSSL_free(ctx);
 409 }
 410
 411 #ifndef FIPS_MODULE
 412
 413 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 414                              const EVP_PKEY_METHOD *meth)
 415 {
 416     if (ppkey_id)
 417         *ppkey_id = meth->pkey_id;
 418     if (pflags)
 419         *pflags = meth->flags;
 420 }
 421
 422 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 423 {
 424     int pkey_id = dst->pkey_id;
 425     int flags = dst->flags;
 426
 427     *dst = *src;
 428
 429     /* We only copy the function pointers so restore the other values */
 430     dst->pkey_id = pkey_id;
 431     dst->flags = flags;
 432 }
 433
 434 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 435 {
 436     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 437         OPENSSL_free(pmeth);
 438 }
 439
 440 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 441 {
 442     return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
 443 }
 444
 445 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 446 {
 447     return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
 448 }
 449
 450 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 451 {
 452     EVP_PKEY_CTX *rctx;
 453
 454     if (((pctx->pmeth == NULL) || (pctx->pmeth->copy == NULL))
 455             && ((EVP_PKEY_CTX_IS_DERIVE_OP(pctx)
 456                  && pctx->op.kex.exchprovctx == NULL)
 457                 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)
 458                     && pctx->op.sig.sigprovctx == NULL)))
 459         return NULL;
 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         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
 464         return 0;
 465     }
 466 # endif
 467     rctx = OPENSSL_zalloc(sizeof(*rctx));
 468     if (rctx == NULL) {
 469         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, 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 = pctx->propquery;
 480
 481     if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
 482         if (pctx->op.kex.exchange != NULL) {
 483             rctx->op.kex.exchange = pctx->op.kex.exchange;
 484             if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange)) {
 485                 OPENSSL_free(rctx);
 486                 return NULL;
 487             }
 488         }
 489         if (pctx->op.kex.exchprovctx != NULL) {
 490             if (!ossl_assert(pctx->op.kex.exchange != NULL))
 491                 return NULL;
 492             rctx->op.kex.exchprovctx
 493                 = pctx->op.kex.exchange->dupctx(pctx->op.kex.exchprovctx);
 494             if (rctx->op.kex.exchprovctx == NULL) {
 495                 EVP_KEYEXCH_free(rctx->op.kex.exchange);
 496                 OPENSSL_free(rctx);
 497                 return NULL;
 498             }
 499             return rctx;
 500         }
 501     } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
 502         if (pctx->op.sig.signature != NULL) {
 503             rctx->op.sig.signature = pctx->op.sig.signature;
 504             if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature)) {
 505                 OPENSSL_free(rctx);
 506                 return NULL;
 507             }
 508         }
 509         if (pctx->op.sig.sigprovctx != NULL) {
 510             if (!ossl_assert(pctx->op.sig.signature != NULL))
 511                 return NULL;
 512             rctx->op.sig.sigprovctx
 513                 = pctx->op.sig.signature->dupctx(pctx->op.sig.sigprovctx);
 514             if (rctx->op.sig.sigprovctx == NULL) {
 515                 EVP_SIGNATURE_free(rctx->op.sig.signature);
 516                 OPENSSL_free(rctx);
 517                 return NULL;
 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                 OPENSSL_free(rctx);
 526                 return NULL;
 527             }
 528         }
 529         if (pctx->op.ciph.ciphprovctx != NULL) {
 530             if (!ossl_assert(pctx->op.ciph.cipher != NULL))
 531                 return NULL;
 532             rctx->op.ciph.ciphprovctx
 533                 = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.ciphprovctx);
 534             if (rctx->op.ciph.ciphprovctx == NULL) {
 535                 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
 536                 OPENSSL_free(rctx);
 537                 return NULL;
 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                 OPENSSL_free(rctx);
 546                 return NULL;
 547             }
 548         }
 549         if (pctx->op.encap.kemprovctx != NULL) {
 550             if (!ossl_assert(pctx->op.encap.kem != NULL))
 551                 return NULL;
 552             rctx->op.encap.kemprovctx
 553                 = pctx->op.encap.kem->dupctx(pctx->op.encap.kemprovctx);
 554             if (rctx->op.encap.kemprovctx == NULL) {
 555                 EVP_KEM_free(rctx->op.encap.kem);
 556                 OPENSSL_free(rctx);
 557                 return NULL;
 558             }
 559             return rctx;
 560         }
 561     }
 562
 563     rctx->pmeth = pctx->pmeth;
 564 # ifndef OPENSSL_NO_ENGINE
 565     rctx->engine = pctx->engine;
 566 # endif
 567
 568     if (pctx->peerkey)
 569         EVP_PKEY_up_ref(pctx->peerkey);
 570     rctx->peerkey = pctx->peerkey;
 571
 572     if (pctx->pmeth->copy(rctx, pctx) > 0)
 573         return rctx;
 574
 575     rctx->pmeth = NULL;
 576     EVP_PKEY_CTX_free(rctx);
 577     return NULL;
 578
 579 }
 580
 581 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 582 {
 583     if (app_pkey_methods == NULL) {
 584         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 585         if (app_pkey_methods == NULL){
 586             EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 587             return 0;
 588         }
 589     }
 590     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 591         EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 592         return 0;
 593     }
 594     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 595     return 1;
 596 }
 597
 598 void evp_app_cleanup_int(void)
 599 {
 600     if (app_pkey_methods != NULL)
 601         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 602 }
 603
 604 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 605 {
 606     const EVP_PKEY_METHOD *ret;
 607
 608     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 609
 610     return ret == NULL ? 0 : 1;
 611 }
 612
 613 size_t EVP_PKEY_meth_get_count(void)
 614 {
 615     size_t rv = OSSL_NELEM(standard_methods);
 616
 617     if (app_pkey_methods)
 618         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 619     return rv;
 620 }
 621
 622 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 623 {
 624     if (idx < OSSL_NELEM(standard_methods))
 625         return (standard_methods[idx])();
 626     if (app_pkey_methods == NULL)
 627         return NULL;
 628     idx -= OSSL_NELEM(standard_methods);
 629     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 630         return NULL;
 631     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 632 }
 633 #endif
 634
 635 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 636 {
 637     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 638             && ctx->op.kex.exchprovctx != NULL
 639             && ctx->op.kex.exchange != NULL
 640             && ctx->op.kex.exchange->set_ctx_params != NULL)
 641         return ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.exchprovctx,
 642                                                     params);
 643     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 644             && ctx->op.sig.sigprovctx != NULL
 645             && ctx->op.sig.signature != NULL
 646             && ctx->op.sig.signature->set_ctx_params != NULL)
 647         return ctx->op.sig.signature->set_ctx_params(ctx->op.sig.sigprovctx,
 648                                                      params);
 649     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 650             && ctx->op.ciph.ciphprovctx != NULL
 651             && ctx->op.ciph.cipher != NULL
 652             && ctx->op.ciph.cipher->set_ctx_params != NULL)
 653         return ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.ciphprovctx,
 654                                                      params);
 655     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 656         && ctx->op.keymgmt.genctx != NULL
 657         && ctx->keymgmt != NULL
 658         && ctx->keymgmt->gen_set_params != NULL)
 659         return evp_keymgmt_gen_set_params(ctx->keymgmt, ctx->op.keymgmt.genctx,
 660                                           params);
 661     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 662         && ctx->op.encap.kemprovctx != NULL
 663         && ctx->op.encap.kem != NULL
 664         && ctx->op.encap.kem->set_ctx_params != NULL)
 665         return ctx->op.encap.kem->set_ctx_params(ctx->op.encap.kemprovctx,
 666                                                  params);
 667     return 0;
 668 }
 669
 670 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 671 {
 672     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 673             && ctx->op.kex.exchprovctx != NULL
 674             && ctx->op.kex.exchange != NULL
 675             && ctx->op.kex.exchange->get_ctx_params != NULL)
 676         return ctx->op.kex.exchange->get_ctx_params(ctx->op.kex.exchprovctx,
 677                                                     params);
 678     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 679             && ctx->op.sig.sigprovctx != NULL
 680             && ctx->op.sig.signature != NULL
 681             && ctx->op.sig.signature->get_ctx_params != NULL)
 682         return ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx,
 683                                                      params);
 684     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 685             && ctx->op.ciph.ciphprovctx != NULL
 686             && ctx->op.ciph.cipher != NULL
 687             && ctx->op.ciph.cipher->get_ctx_params != NULL)
 688         return ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.ciphprovctx,
 689                                                    params);
 690     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 691         && ctx->op.encap.kemprovctx != NULL
 692         && ctx->op.encap.kem != NULL
 693         && ctx->op.encap.kem->get_ctx_params != NULL)
 694         return ctx->op.encap.kem->get_ctx_params(ctx->op.encap.kemprovctx,
 695                                                  params);
 696     return 0;
 697 }
 698
 699 #ifndef FIPS_MODULE
 700 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx)
 701 {
 702     void *provctx;
 703
 704     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 705             && ctx->op.kex.exchange != NULL
 706             && ctx->op.kex.exchange->gettable_ctx_params != NULL) {
 707         provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
 708         return ctx->op.kex.exchange->gettable_ctx_params(provctx);
 709     }
 710     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 711             && ctx->op.sig.signature != NULL
 712             && ctx->op.sig.signature->gettable_ctx_params != NULL) {
 713         provctx = ossl_provider_ctx(
 714                       EVP_SIGNATURE_provider(ctx->op.sig.signature));
 715         return ctx->op.sig.signature->gettable_ctx_params(provctx);
 716     }
 717     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 718             && ctx->op.ciph.cipher != NULL
 719             && ctx->op.ciph.cipher->gettable_ctx_params != NULL) {
 720         provctx = ossl_provider_ctx(
 721                       EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
 722         return ctx->op.ciph.cipher->gettable_ctx_params(provctx);
 723     }
 724     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 725         && ctx->op.encap.kem != NULL
 726         && ctx->op.encap.kem->gettable_ctx_params != NULL) {
 727         provctx = ossl_provider_ctx(EVP_KEM_provider(ctx->op.encap.kem));
 728         return ctx->op.encap.kem->gettable_ctx_params(provctx);
 729     }
 730     return NULL;
 731 }
 732
 733 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx)
 734 {
 735     void *provctx;
 736
 737     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 738             && ctx->op.kex.exchange != NULL
 739             && ctx->op.kex.exchange->settable_ctx_params != NULL) {
 740         provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
 741         return ctx->op.kex.exchange->settable_ctx_params(provctx);
 742     }
 743     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 744             && ctx->op.sig.signature != NULL
 745             && ctx->op.sig.signature->settable_ctx_params != NULL) {
 746         provctx = ossl_provider_ctx(
 747                       EVP_SIGNATURE_provider(ctx->op.sig.signature));
 748         return ctx->op.sig.signature->settable_ctx_params(provctx);
 749     }
 750     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 751             && ctx->op.ciph.cipher != NULL
 752             && ctx->op.ciph.cipher->settable_ctx_params != NULL) {
 753         provctx = ossl_provider_ctx(
 754                       EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
 755         return ctx->op.ciph.cipher->settable_ctx_params(provctx);
 756     }
 757     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 758             && ctx->keymgmt != NULL)
 759         return EVP_KEYMGMT_gen_settable_params(ctx->keymgmt);
 760     if (EVP_PKEY_CTX_IS_KEM_OP(ctx)
 761         && ctx->op.encap.kem != NULL
 762         && ctx->op.encap.kem->settable_ctx_params != NULL) {
 763         provctx = ossl_provider_ctx(EVP_KEM_provider(ctx->op.encap.kem));
 764         return ctx->op.encap.kem->settable_ctx_params(provctx);
 765     }
 766     return NULL;
 767 }
 768
 769 /*
 770  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
 771  *
 772  * Return 1 on success, 0 or negative for errors.
 773  *
 774  * In particular they return -2 if any of the params is not supported.
 775  *
 776  * They are not available in FIPS_MODULE as they depend on
 777  *      - EVP_PKEY_CTX_{get,set}_params()
 778  *      - EVP_PKEY_CTX_{gettable,settable}_params()
 779  *
 780  */
 781 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 782 {
 783     const OSSL_PARAM *p;
 784
 785     if (ctx == NULL || params == NULL)
 786         return 0;
 787
 788     for (p = params; p->key != NULL; p++) {
 789         /* Check the ctx actually understands this parameter */
 790         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_settable_params(ctx),
 791                                     p->key) == NULL )
 792             return -2;
 793     }
 794
 795     return EVP_PKEY_CTX_set_params(ctx, params);
 796 }
 797
 798 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 799 {
 800     const OSSL_PARAM *p;
 801
 802     if (ctx == NULL || params == NULL)
 803         return 0;
 804
 805     for (p = params; p->key != NULL; p++ ) {
 806         /* Check the ctx actually understands this parameter */
 807         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_gettable_params(ctx),
 808                                     p->key) == NULL )
 809             return -2;
 810     }
 811
 812     return EVP_PKEY_CTX_get_params(ctx, params);
 813 }
 814
 815 # ifndef OPENSSL_NO_DH
 816 int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad)
 817 {
 818     OSSL_PARAM dh_pad_params[2];
 819     unsigned int upad = pad;
 820
 821     /* We use EVP_PKEY_CTX_ctrl return values */
 822     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 823         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 824         return -2;
 825     }
 826
 827     /* TODO(3.0): Remove this eventually when no more legacy */
 828     if (ctx->op.kex.exchprovctx == NULL)
 829         return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_DERIVE,
 830                                  EVP_PKEY_CTRL_DH_PAD, pad, NULL);
 831
 832     dh_pad_params[0] = OSSL_PARAM_construct_uint(OSSL_EXCHANGE_PARAM_PAD, &upad);
 833     dh_pad_params[1] = OSSL_PARAM_construct_end();
 834
 835     return EVP_PKEY_CTX_set_params(ctx, dh_pad_params);
 836 }
 837 # endif
 838
 839 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
 840 {
 841     OSSL_PARAM sig_md_params[2], *p = sig_md_params;
 842     /* 80 should be big enough */
 843     char name[80] = "";
 844     const EVP_MD *tmp;
 845
 846     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 847         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 848         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 849         return -2;
 850     }
 851
 852     /* TODO(3.0): Remove this eventually when no more legacy */
 853     if (ctx->op.sig.sigprovctx == NULL)
 854         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 855                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
 856
 857     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 858                                             name,
 859                                             sizeof(name));
 860     *p = OSSL_PARAM_construct_end();
 861
 862     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
 863         return 0;
 864
 865     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
 866     if (tmp == NULL)
 867         return 0;
 868
 869     *md = tmp;
 870
 871     return 1;
 872 }
 873
 874 static int evp_pkey_ctx_set_md(EVP_PKEY_CTX *ctx, const EVP_MD *md,
 875                                int fallback, const char *param, int op,
 876                                int ctrl)
 877 {
 878     OSSL_PARAM md_params[2], *p = md_params;
 879     const char *name;
 880
 881     if (ctx == NULL || (ctx->operation & op) == 0) {
 882         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 883         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 884         return -2;
 885     }
 886
 887     /* TODO(3.0): Remove this eventually when no more legacy */
 888     if (fallback)
 889         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, 0, (void *)(md));
 890
 891     if (md == NULL) {
 892         name = "";
 893     } else {
 894         name = EVP_MD_name(md);
 895     }
 896
 897     *p++ = OSSL_PARAM_construct_utf8_string(param,
 898                                             /*
 899                                              * Cast away the const. This is read
 900                                              * only so should be safe
 901                                              */
 902                                             (char *)name, 0);
 903     *p = OSSL_PARAM_construct_end();
 904
 905     return EVP_PKEY_CTX_set_params(ctx, md_params);
 906 }
 907
 908 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 909 {
 910     return evp_pkey_ctx_set_md(ctx, md, ctx->op.sig.sigprovctx == NULL,
 911                                OSSL_SIGNATURE_PARAM_DIGEST,
 912                                EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD);
 913 }
 914
 915 int EVP_PKEY_CTX_set_tls1_prf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 916 {
 917     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.exchprovctx == NULL,
 918                                OSSL_KDF_PARAM_DIGEST,
 919                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_TLS_MD);
 920 }
 921
 922 static int evp_pkey_ctx_set1_octet_string(EVP_PKEY_CTX *ctx, int fallback,
 923                                           const char *param, int op, int ctrl,
 924                                           const unsigned char *data,
 925                                           int datalen)
 926 {
 927     OSSL_PARAM octet_string_params[2], *p = octet_string_params;
 928
 929     if (ctx == NULL || (ctx->operation & op) == 0) {
 930         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 931         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 932         return -2;
 933     }
 934
 935     /* TODO(3.0): Remove this eventually when no more legacy */
 936     if (fallback)
 937         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, datalen, (void *)(data));
 938
 939     if (datalen < 0) {
 940         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_LENGTH);
 941         return 0;
 942     }
 943
 944     *p++ = OSSL_PARAM_construct_octet_string(param,
 945                                             /*
 946                                              * Cast away the const. This is read
 947                                              * only so should be safe
 948                                              */
 949                                             (unsigned char *)data,
 950                                             (size_t)datalen);
 951     *p = OSSL_PARAM_construct_end();
 952
 953     return EVP_PKEY_CTX_set_params(ctx, octet_string_params);
 954 }
 955
 956 int EVP_PKEY_CTX_set1_tls1_prf_secret(EVP_PKEY_CTX *ctx,
 957                                       const unsigned char *sec, int seclen)
 958 {
 959     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 960                                           OSSL_KDF_PARAM_SECRET,
 961                                           EVP_PKEY_OP_DERIVE,
 962                                           EVP_PKEY_CTRL_TLS_SECRET,
 963                                           sec, seclen);
 964 }
 965
 966 int EVP_PKEY_CTX_add1_tls1_prf_seed(EVP_PKEY_CTX *ctx,
 967                                     const unsigned char *seed, int seedlen)
 968 {
 969     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 970                                           OSSL_KDF_PARAM_SEED,
 971                                           EVP_PKEY_OP_DERIVE,
 972                                           EVP_PKEY_CTRL_TLS_SEED,
 973                                           seed, seedlen);
 974 }
 975
 976 int EVP_PKEY_CTX_set_hkdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 977 {
 978     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.exchprovctx == NULL,
 979                                OSSL_KDF_PARAM_DIGEST,
 980                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_HKDF_MD);
 981 }
 982
 983 int EVP_PKEY_CTX_set1_hkdf_salt(EVP_PKEY_CTX *ctx,
 984                                 const unsigned char *salt, int saltlen)
 985 {
 986     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 987                                           OSSL_KDF_PARAM_SALT,
 988                                           EVP_PKEY_OP_DERIVE,
 989                                           EVP_PKEY_CTRL_HKDF_SALT,
 990                                           salt, saltlen);
 991 }
 992
 993 int EVP_PKEY_CTX_set1_hkdf_key(EVP_PKEY_CTX *ctx,
 994                                       const unsigned char *key, int keylen)
 995 {
 996     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 997                                           OSSL_KDF_PARAM_KEY,
 998                                           EVP_PKEY_OP_DERIVE,
 999                                           EVP_PKEY_CTRL_HKDF_KEY,
1000                                           key, keylen);
1001 }
1002
1003 int EVP_PKEY_CTX_add1_hkdf_info(EVP_PKEY_CTX *ctx,
1004                                       const unsigned char *info, int infolen)
1005 {
1006     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1007                                           OSSL_KDF_PARAM_INFO,
1008                                           EVP_PKEY_OP_DERIVE,
1009                                           EVP_PKEY_CTRL_HKDF_INFO,
1010                                           info, infolen);
1011 }
1012
1013 int EVP_PKEY_CTX_hkdf_mode(EVP_PKEY_CTX *ctx, int mode)
1014 {
1015     OSSL_PARAM int_params[2], *p = int_params;
1016
1017     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1018         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1019         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1020         return -2;
1021     }
1022
1023     /* TODO(3.0): Remove this eventually when no more legacy */
1024     if (ctx->op.kex.exchprovctx == NULL)
1025         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_DERIVE,
1026                                  EVP_PKEY_CTRL_HKDF_MODE, mode, NULL);
1027
1028
1029     if (mode < 0) {
1030         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1031         return 0;
1032     }
1033
1034     *p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_MODE, &mode);
1035     *p = OSSL_PARAM_construct_end();
1036
1037     return EVP_PKEY_CTX_set_params(ctx, int_params);
1038 }
1039
1040 int EVP_PKEY_CTX_set1_pbe_pass(EVP_PKEY_CTX *ctx, const char *pass,
1041                                int passlen)
1042 {
1043     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1044                                           OSSL_KDF_PARAM_PASSWORD,
1045                                           EVP_PKEY_OP_DERIVE,
1046                                           EVP_PKEY_CTRL_PASS,
1047                                           (const unsigned char *)pass, passlen);
1048 }
1049
1050 int EVP_PKEY_CTX_set1_scrypt_salt(EVP_PKEY_CTX *ctx,
1051                                   const unsigned char *salt, int saltlen)
1052 {
1053     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
1054                                           OSSL_KDF_PARAM_SALT,
1055                                           EVP_PKEY_OP_DERIVE,
1056                                           EVP_PKEY_CTRL_SCRYPT_SALT,
1057                                           salt, saltlen);
1058 }
1059
1060 static int evp_pkey_ctx_set_uint64(EVP_PKEY_CTX *ctx, const char *param,
1061                                    int op, int ctrl, uint64_t val)
1062 {
1063     OSSL_PARAM uint64_params[2], *p = uint64_params;
1064
1065     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
1066         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1067         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1068         return -2;
1069     }
1070
1071     /* TODO(3.0): Remove this eventually when no more legacy */
1072     if (ctx->op.kex.exchprovctx == NULL)
1073         return EVP_PKEY_CTX_ctrl_uint64(ctx, -1, op, ctrl, val);
1074
1075     *p++ = OSSL_PARAM_construct_uint64(param, &val);
1076     *p = OSSL_PARAM_construct_end();
1077
1078     return EVP_PKEY_CTX_set_params(ctx, uint64_params);
1079 }
1080
1081 int EVP_PKEY_CTX_set_scrypt_N(EVP_PKEY_CTX *ctx, uint64_t n)
1082 {
1083     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_N,
1084                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_N,
1085                                    n);
1086 }
1087
1088 int EVP_PKEY_CTX_set_scrypt_r(EVP_PKEY_CTX *ctx, uint64_t r)
1089 {
1090     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_R,
1091                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_R,
1092                                    r);
1093 }
1094
1095 int EVP_PKEY_CTX_set_scrypt_p(EVP_PKEY_CTX *ctx, uint64_t p)
1096 {
1097     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_P,
1098                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_P,
1099                                    p);
1100 }
1101
1102 int EVP_PKEY_CTX_set_scrypt_maxmem_bytes(EVP_PKEY_CTX *ctx,
1103                                          uint64_t maxmem_bytes)
1104 {
1105     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_MAXMEM,
1106                                    EVP_PKEY_OP_DERIVE,
1107                                    EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES,
1108                                    maxmem_bytes);
1109 }
1110
1111 int EVP_PKEY_CTX_set_mac_key(EVP_PKEY_CTX *ctx, const unsigned char *key,
1112                              int keylen)
1113 {
1114     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.keymgmt.genctx == NULL,
1115                                           OSSL_PKEY_PARAM_PRIV_KEY,
1116                                           EVP_PKEY_OP_KEYGEN,
1117                                           EVP_PKEY_CTRL_SET_MAC_KEY,
1118                                           key, keylen);
1119 }
1120
1121 int EVP_PKEY_CTX_set_kem_op(EVP_PKEY_CTX *ctx, const char *op)
1122 {
1123     OSSL_PARAM params[2], *p = params;
1124
1125     if (ctx == NULL || op == NULL) {
1126         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
1127         return 0;
1128     }
1129     if (!EVP_PKEY_CTX_IS_KEM_OP(ctx)) {
1130         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1131         return -2;
1132     }
1133     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KEM_PARAM_OPERATION,
1134                                             (char *)op, 0);
1135     *p = OSSL_PARAM_construct_end();
1136     return EVP_PKEY_CTX_set_params(ctx, params);
1137 }
1138
1139 int evp_pkey_ctx_set1_id_prov(EVP_PKEY_CTX *ctx, const void *id, int len)
1140 {
1141     OSSL_PARAM params[2], *p = params;
1142     int ret;
1143
1144     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1145         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1146         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1147         return -2;
1148     }
1149
1150     *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_DIST_ID,
1151                                              /*
1152                                               * Cast away the const. This is
1153                                               * read only so should be safe
1154                                               */
1155                                              (void *)id, (size_t)len);
1156     *p++ = OSSL_PARAM_construct_end();
1157
1158     ret = evp_pkey_ctx_set_params_strict(ctx, params);
1159     if (ret == -2)
1160         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1161     return ret;
1162 }
1163
1164 int EVP_PKEY_CTX_set1_id(EVP_PKEY_CTX *ctx, const void *id, int len)
1165 {
1166     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1167                              EVP_PKEY_CTRL_SET1_ID, (int)len, (void*)(id));
1168 }
1169
1170 static int get1_id_data(EVP_PKEY_CTX *ctx, void *id, size_t *id_len)
1171 {
1172     int ret;
1173     void *tmp_id = NULL;
1174     OSSL_PARAM params[2], *p = params;
1175
1176     if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
1177         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1178         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1179         return -2;
1180     }
1181
1182     *p++ = OSSL_PARAM_construct_octet_ptr(OSSL_PKEY_PARAM_DIST_ID,
1183                                           &tmp_id, 0);
1184     *p++ = OSSL_PARAM_construct_end();
1185
1186     ret = evp_pkey_ctx_get_params_strict(ctx, params);
1187     if (ret == -2) {
1188         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1189     } else if (ret > 0) {
1190         size_t tmp_id_len = params[0].return_size;
1191
1192         if (id != NULL)
1193             memcpy(id, tmp_id, tmp_id_len);
1194         if (id_len != NULL)
1195             *id_len = tmp_id_len;
1196     }
1197     return ret;
1198 }
1199
1200 int evp_pkey_ctx_get1_id_prov(EVP_PKEY_CTX *ctx, void *id)
1201 {
1202     return get1_id_data(ctx, id, NULL);
1203 }
1204
1205 int evp_pkey_ctx_get1_id_len_prov(EVP_PKEY_CTX *ctx, size_t *id_len)
1206 {
1207     return get1_id_data(ctx, NULL, id_len);
1208 }
1209
1210 int EVP_PKEY_CTX_get1_id(EVP_PKEY_CTX *ctx, void *id)
1211 {
1212     return EVP_PKEY_CTX_ctrl(ctx, -1, -1, EVP_PKEY_CTRL_GET1_ID, 0, (void*)id);
1213 }
1214
1215 int EVP_PKEY_CTX_get1_id_len(EVP_PKEY_CTX *ctx, size_t *id_len)
1216 {
1217     return EVP_PKEY_CTX_ctrl(ctx, -1, -1,
1218                              EVP_PKEY_CTRL_GET1_ID_LEN, 0, (void*)id_len);
1219 }
1220
1221 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
1222                                 int cmd, int p1, void *p2)
1223 {
1224     switch (cmd) {
1225     case EVP_PKEY_CTRL_SET1_ID:
1226         return evp_pkey_ctx_set1_id_prov(ctx, p2, p1);
1227     case EVP_PKEY_CTRL_GET1_ID:
1228         return evp_pkey_ctx_get1_id_prov(ctx, p2);
1229     case EVP_PKEY_CTRL_GET1_ID_LEN:
1230         return evp_pkey_ctx_get1_id_len_prov(ctx, p2);
1231     }
1232
1233 # ifndef OPENSSL_NO_DH
1234     if (keytype == EVP_PKEY_DHX) {
1235         switch (cmd) {
1236         case EVP_PKEY_CTRL_DH_KDF_TYPE:
1237             return EVP_PKEY_CTX_set_dh_kdf_type(ctx, p1);
1238         case EVP_PKEY_CTRL_DH_KDF_MD:
1239             return EVP_PKEY_CTX_set_dh_kdf_md(ctx, p2);
1240         case EVP_PKEY_CTRL_DH_KDF_OUTLEN:
1241             return EVP_PKEY_CTX_set_dh_kdf_outlen(ctx, p1);
1242         case EVP_PKEY_CTRL_DH_KDF_UKM:
1243             return EVP_PKEY_CTX_set0_dh_kdf_ukm(ctx, p2, p1);
1244         case EVP_PKEY_CTRL_DH_KDF_OID:
1245             return EVP_PKEY_CTX_set0_dh_kdf_oid(ctx, p2);
1246         case EVP_PKEY_CTRL_GET_DH_KDF_MD:
1247             return EVP_PKEY_CTX_get_dh_kdf_md(ctx, p2);
1248         case EVP_PKEY_CTRL_GET_DH_KDF_OUTLEN:
1249             return EVP_PKEY_CTX_get_dh_kdf_outlen(ctx, p2);
1250         case EVP_PKEY_CTRL_GET_DH_KDF_UKM:
1251             return EVP_PKEY_CTX_get0_dh_kdf_ukm(ctx, p2);
1252         case EVP_PKEY_CTRL_GET_DH_KDF_OID:
1253             return EVP_PKEY_CTX_get0_dh_kdf_oid(ctx, p2);
1254         }
1255     }
1256     if (keytype == EVP_PKEY_DH) {
1257         switch (cmd) {
1258             case EVP_PKEY_CTRL_DH_PAD:
1259                 return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
1260             case EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN:
1261                 return EVP_PKEY_CTX_set_dh_paramgen_prime_len(ctx, p1);
1262             case EVP_PKEY_CTRL_DH_PARAMGEN_SUBPRIME_LEN:
1263                 return EVP_PKEY_CTX_set_dh_paramgen_subprime_len(ctx, p1);
1264             case EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR:
1265                 return EVP_PKEY_CTX_set_dh_paramgen_generator(ctx, p1);
1266             case EVP_PKEY_CTRL_DH_PARAMGEN_TYPE:
1267                 return EVP_PKEY_CTX_set_dh_paramgen_type(ctx, p1);
1268             case EVP_PKEY_CTRL_DH_RFC5114:
1269                 return EVP_PKEY_CTX_set_dh_rfc5114(ctx, p1);
1270         }
1271     }
1272 # endif
1273 # ifndef OPENSSL_NO_DSA
1274     if (keytype == EVP_PKEY_DSA) {
1275         switch (cmd) {
1276         case EVP_PKEY_CTRL_DSA_PARAMGEN_BITS:
1277             return EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, p1);
1278         case EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS:
1279             return EVP_PKEY_CTX_set_dsa_paramgen_q_bits(ctx, p1);
1280         case EVP_PKEY_CTRL_DSA_PARAMGEN_MD:
1281             return EVP_PKEY_CTX_set_dsa_paramgen_md(ctx, p2);
1282         }
1283     }
1284 # endif
1285 # ifndef OPENSSL_NO_EC
1286     if (keytype == EVP_PKEY_EC) {
1287         switch (cmd) {
1288         case EVP_PKEY_CTRL_EC_PARAM_ENC:
1289             return evp_pkey_ctx_set_ec_param_enc_prov(ctx, p1);
1290         case EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID:
1291             return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, p1);
1292         case EVP_PKEY_CTRL_EC_ECDH_COFACTOR:
1293             if (p1 == -2) {
1294                 return EVP_PKEY_CTX_get_ecdh_cofactor_mode(ctx);
1295             } else if (p1 < -1 || p1 > 1) {
1296                 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1297                 return -2;
1298             } else {
1299                 return EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, p1);
1300             }
1301         case EVP_PKEY_CTRL_EC_KDF_TYPE:
1302             if (p1 == -2) {
1303                 return EVP_PKEY_CTX_get_ecdh_kdf_type(ctx);
1304             } else {
1305                 return EVP_PKEY_CTX_set_ecdh_kdf_type(ctx, p1);
1306             }
1307         case EVP_PKEY_CTRL_GET_EC_KDF_MD:
1308             return EVP_PKEY_CTX_get_ecdh_kdf_md(ctx, p2);
1309         case EVP_PKEY_CTRL_EC_KDF_MD:
1310             return EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, p2);
1311         case EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN:
1312             return EVP_PKEY_CTX_get_ecdh_kdf_outlen(ctx, p2);
1313         case EVP_PKEY_CTRL_EC_KDF_OUTLEN:
1314             return EVP_PKEY_CTX_set_ecdh_kdf_outlen(ctx, p1);
1315         case EVP_PKEY_CTRL_GET_EC_KDF_UKM:
1316             return EVP_PKEY_CTX_get0_ecdh_kdf_ukm(ctx, p2);
1317         case EVP_PKEY_CTRL_EC_KDF_UKM:
1318             return EVP_PKEY_CTX_set0_ecdh_kdf_ukm(ctx, p2, p1);
1319         }
1320     }
1321 # endif
1322     if (keytype == EVP_PKEY_RSA) {
1323         switch (cmd) {
1324         case EVP_PKEY_CTRL_RSA_OAEP_MD:
1325             return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
1326         case EVP_PKEY_CTRL_GET_RSA_OAEP_MD:
1327             return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
1328         case EVP_PKEY_CTRL_RSA_MGF1_MD:
1329             return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
1330         case EVP_PKEY_CTRL_RSA_OAEP_LABEL:
1331             return EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, p2, p1);
1332         case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL:
1333             return EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, (unsigned char **)p2);
1334         case EVP_PKEY_CTRL_RSA_KEYGEN_BITS:
1335             return EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, p1);
1336         case EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP:
1337             return EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, p2);
1338         case EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES:
1339             return EVP_PKEY_CTX_set_rsa_keygen_primes(ctx, p1);
1340         }
1341     }
1342     /*
1343      * keytype == -1 is used when several key types share the same structure,
1344      * or for generic controls that are the same across multiple key types.
1345      */
1346     if (keytype == -1) {
1347         if (optype == EVP_PKEY_OP_DERIVE) {
1348             switch (cmd) {
1349             /* TLS1-PRF */
1350             case EVP_PKEY_CTRL_TLS_MD:
1351                 return EVP_PKEY_CTX_set_tls1_prf_md(ctx, p2);
1352             case EVP_PKEY_CTRL_TLS_SECRET:
1353                 return EVP_PKEY_CTX_set1_tls1_prf_secret(ctx, p2, p1);
1354             case EVP_PKEY_CTRL_TLS_SEED:
1355                 return EVP_PKEY_CTX_add1_tls1_prf_seed(ctx, p2, p1);
1356
1357             /* HKDF */
1358             case EVP_PKEY_CTRL_HKDF_MD:
1359                 return EVP_PKEY_CTX_set_hkdf_md(ctx, p2);
1360             case EVP_PKEY_CTRL_HKDF_SALT :
1361                 return EVP_PKEY_CTX_set1_hkdf_salt(ctx, p2, p1);
1362             case EVP_PKEY_CTRL_HKDF_KEY:
1363                 return EVP_PKEY_CTX_set1_hkdf_key(ctx, p2, p1);
1364             case EVP_PKEY_CTRL_HKDF_INFO:
1365                 return EVP_PKEY_CTX_add1_hkdf_info(ctx, p2, p1);
1366             case EVP_PKEY_CTRL_HKDF_MODE:
1367                 return EVP_PKEY_CTX_hkdf_mode(ctx, p1);
1368
1369             /* Scrypt */
1370             case EVP_PKEY_CTRL_PASS:
1371                 return EVP_PKEY_CTX_set1_pbe_pass(ctx, p2, p1);
1372             case EVP_PKEY_CTRL_SCRYPT_SALT:
1373                 return EVP_PKEY_CTX_set1_scrypt_salt(ctx, p2, p1);
1374             case EVP_PKEY_CTRL_SCRYPT_N:
1375                 return EVP_PKEY_CTX_set_scrypt_N(ctx, p1);
1376             case EVP_PKEY_CTRL_SCRYPT_R:
1377                 return EVP_PKEY_CTX_set_scrypt_r(ctx, p1);
1378             case EVP_PKEY_CTRL_SCRYPT_P:
1379                 return EVP_PKEY_CTX_set_scrypt_p(ctx, p1);
1380             case EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES:
1381                 return EVP_PKEY_CTX_set_scrypt_maxmem_bytes(ctx, p1);
1382             }
1383         } else if (optype == EVP_PKEY_OP_KEYGEN) {
1384             OSSL_PARAM params[2], *p = params;
1385
1386             switch (cmd) {
1387             case EVP_PKEY_CTRL_CIPHER:
1388                 {
1389                     char *ciphname = (char *)EVP_CIPHER_name(p2);
1390
1391                     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_CIPHER,
1392                                                             ciphname, 0);
1393                     *p = OSSL_PARAM_construct_end();
1394
1395                     return EVP_PKEY_CTX_set_params(ctx, params);
1396                 }
1397             case EVP_PKEY_CTRL_SET_MAC_KEY:
1398                 {
1399                     *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_PRIV_KEY,
1400                                                              p2, p1);
1401                     *p = OSSL_PARAM_construct_end();
1402
1403                     return EVP_PKEY_CTX_set_params(ctx, params);
1404                 }
1405             }
1406         }
1407         switch (cmd) {
1408         case EVP_PKEY_CTRL_MD:
1409             return EVP_PKEY_CTX_set_signature_md(ctx, p2);
1410         case EVP_PKEY_CTRL_GET_MD:
1411             return EVP_PKEY_CTX_get_signature_md(ctx, p2);
1412         case EVP_PKEY_CTRL_RSA_PADDING:
1413             return EVP_PKEY_CTX_set_rsa_padding(ctx, p1);
1414         case EVP_PKEY_CTRL_GET_RSA_PADDING:
1415             return EVP_PKEY_CTX_get_rsa_padding(ctx, p2);
1416         case EVP_PKEY_CTRL_GET_RSA_MGF1_MD:
1417             return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
1418         case EVP_PKEY_CTRL_RSA_PSS_SALTLEN:
1419             return EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, p1);
1420         case EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN:
1421             return EVP_PKEY_CTX_get_rsa_pss_saltlen(ctx, p2);
1422         case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
1423         case EVP_PKEY_CTRL_PKCS7_DECRYPT:
1424 # ifndef OPENSSL_NO_CMS
1425         case EVP_PKEY_CTRL_CMS_DECRYPT:
1426         case EVP_PKEY_CTRL_CMS_ENCRYPT:
1427 # endif
1428             /* TODO (3.0) Temporary hack, this should probe */
1429             if (!EVP_PKEY_is_a(EVP_PKEY_CTX_get0_pkey(ctx), "RSASSA-PSS"))
1430                 return 1;
1431             ERR_raise(ERR_LIB_EVP,
1432                       EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
1433             return -2;
1434         }
1435     }
1436
1437     /*
1438      * GOST CMS format is different for different cipher algorithms.
1439      * Most of other algorithms don't have such a difference
1440      * so this ctrl is just ignored.
1441      */
1442     if (cmd == EVP_PKEY_CTRL_CIPHER)
1443         return -2;
1444
1445     return 0;
1446 }
1447
1448 static int evp_pkey_ctx_ctrl_int(EVP_PKEY_CTX *ctx, int keytype, int optype,
1449                                  int cmd, int p1, void *p2)
1450 {
1451     int ret = 0;
1452
1453     if (ctx == NULL) {
1454         EVPerr(0, EVP_R_COMMAND_NOT_SUPPORTED);
1455         return -2;
1456     }
1457
1458     /*
1459      * If the method has a |digest_custom| function, we can relax the
1460      * operation type check, since this can be called before the operation
1461      * is initialized.
1462      */
1463     if (ctx->pmeth == NULL || ctx->pmeth->digest_custom == NULL) {
1464         if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
1465             EVPerr(0, EVP_R_NO_OPERATION_SET);
1466             return -1;
1467         }
1468
1469         if ((optype != -1) && !(ctx->operation & optype)) {
1470             EVPerr(0, EVP_R_INVALID_OPERATION);
1471             return -1;
1472         }
1473     }
1474
1475     switch (evp_pkey_ctx_state(ctx)) {
1476     case EVP_PKEY_STATE_PROVIDER:
1477         return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
1478     case EVP_PKEY_STATE_UNKNOWN:
1479     case EVP_PKEY_STATE_LEGACY:
1480         if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
1481             EVPerr(0, EVP_R_COMMAND_NOT_SUPPORTED);
1482             return -2;
1483         }
1484         if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
1485             return -1;
1486
1487         ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
1488
1489         if (ret == -2)
1490             EVPerr(0, EVP_R_COMMAND_NOT_SUPPORTED);
1491         break;
1492     }
1493     return ret;
1494 }
1495
1496 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
1497                       int cmd, int p1, void *p2)
1498 {
1499     int ret = 0;
1500
1501     /* If unsupported, we don't want that reported here */
1502     ERR_set_mark();
1503     ret = evp_pkey_ctx_store_cached_data(ctx, keytype, optype,
1504                                          cmd, NULL, p2, p1);
1505     if (ret == -2) {
1506         ERR_pop_to_mark();
1507     } else {
1508         ERR_clear_last_mark();
1509         /*
1510          * If there was an error, there was an error.
1511          * If the operation isn't initialized yet, we also return, as
1512          * the saved values will be used then anyway.
1513          */
1514         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1515             return ret;
1516     }
1517
1518     return evp_pkey_ctx_ctrl_int(ctx, keytype, optype, cmd, p1, p2);
1519 }
1520
1521 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
1522                              int cmd, uint64_t value)
1523 {
1524     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
1525 }
1526
1527 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
1528                                     const char *value)
1529 {
1530     if (strcmp(name, "md") == 0)
1531         name = OSSL_ALG_PARAM_DIGEST;
1532     else if (strcmp(name, "rsa_padding_mode") == 0)
1533         name = OSSL_ASYM_CIPHER_PARAM_PAD_MODE;
1534     else if (strcmp(name, "rsa_mgf1_md") == 0)
1535         name = OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST;
1536     else if (strcmp(name, "rsa_oaep_md") == 0)
1537         name = OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST;
1538     else if (strcmp(name, "rsa_oaep_label") == 0)
1539         name = OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL;
1540     else if (strcmp(name, "rsa_pss_saltlen") == 0)
1541         name = OSSL_SIGNATURE_PARAM_PSS_SALTLEN;
1542     else if (strcmp(name, "rsa_keygen_bits") == 0)
1543         name = OSSL_PKEY_PARAM_RSA_BITS;
1544     else if (strcmp(name, "rsa_keygen_pubexp") == 0)
1545         name = OSSL_PKEY_PARAM_RSA_E;
1546     else if (strcmp(name, "rsa_keygen_primes") == 0)
1547         name = OSSL_PKEY_PARAM_RSA_PRIMES;
1548     else if (strcmp(name, "rsa_pss_keygen_md") == 0)
1549         name = OSSL_PKEY_PARAM_RSA_DIGEST;
1550     else if (strcmp(name, "rsa_pss_keygen_mgf1_md") == 0)
1551         name = OSSL_PKEY_PARAM_RSA_MGF1_DIGEST;
1552     else if (strcmp(name, "rsa_pss_keygen_saltlen") == 0)
1553         name = OSSL_PKEY_PARAM_RSA_PSS_SALTLEN;
1554 # ifndef OPENSSL_NO_DSA
1555     else if (strcmp(name, "dsa_paramgen_bits") == 0)
1556         name = OSSL_PKEY_PARAM_FFC_PBITS;
1557     else if (strcmp(name, "dsa_paramgen_q_bits") == 0)
1558         name = OSSL_PKEY_PARAM_FFC_QBITS;
1559     else if (strcmp(name, "dsa_paramgen_md") == 0)
1560         name = OSSL_PKEY_PARAM_FFC_DIGEST;
1561 # endif
1562 # ifndef OPENSSL_NO_DH
1563     else if (strcmp(name, "dh_paramgen_generator") == 0)
1564         name = OSSL_PKEY_PARAM_DH_GENERATOR;
1565     else if (strcmp(name, "dh_paramgen_prime_len") == 0)
1566         name = OSSL_PKEY_PARAM_FFC_PBITS;
1567     else if (strcmp(name, "dh_paramgen_subprime_len") == 0)
1568         name = OSSL_PKEY_PARAM_FFC_QBITS;
1569     else if (strcmp(name, "dh_paramgen_type") == 0) {
1570         name = OSSL_PKEY_PARAM_FFC_TYPE;
1571         value = dh_gen_type_id2name(atoi(value));
1572     } else if (strcmp(name, "dh_param") == 0)
1573         name = OSSL_PKEY_PARAM_GROUP_NAME;
1574     else if (strcmp(name, "dh_rfc5114") == 0) {
1575         name = OSSL_PKEY_PARAM_GROUP_NAME;
1576         value = ffc_named_group_from_uid(atoi(value));
1577     } else if (strcmp(name, "dh_pad") == 0)
1578         name = OSSL_EXCHANGE_PARAM_PAD;
1579 # endif
1580 # ifndef OPENSSL_NO_EC
1581     else if (strcmp(name, "ec_paramgen_curve") == 0)
1582         name = OSSL_PKEY_PARAM_GROUP_NAME;
1583     else if (strcmp(name, "ecdh_cofactor_mode") == 0)
1584         name = OSSL_EXCHANGE_PARAM_EC_ECDH_COFACTOR_MODE;
1585     else if (strcmp(name, "ecdh_kdf_md") == 0)
1586         name = OSSL_EXCHANGE_PARAM_KDF_DIGEST;
1587     else if (strcmp(name, "ec_param_enc") == 0)
1588         name = OSSL_PKEY_PARAM_EC_ENCODING;
1589 # endif
1590     else if (strcmp(name, "N") == 0)
1591         name = OSSL_KDF_PARAM_SCRYPT_N;
1592
1593     {
1594         /*
1595          * TODO(3.0) reduce the code above to only translate known legacy
1596          * string to the corresponding core name (see core_names.h), but
1597          * otherwise leave it to this code block to do the actual work.
1598          */
1599         const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
1600         OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
1601         int rv = 0;
1602         int exists = 0;
1603
1604         if (!OSSL_PARAM_allocate_from_text(&params[0], settable, name, value,
1605                                            strlen(value), &exists)) {
1606             if (!exists) {
1607                 ERR_raise_data(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED,
1608                                "name=%s,value=%s", name, value);
1609                 return -2;
1610             }
1611             return 0;
1612         }
1613         if (EVP_PKEY_CTX_set_params(ctx, params))
1614             rv = 1;
1615         OPENSSL_free(params[0].data);
1616         return rv;
1617     }
1618 }
1619
1620 static int evp_pkey_ctx_ctrl_str_int(EVP_PKEY_CTX *ctx,
1621                                      const char *name, const char *value)
1622 {
1623     int ret = 0;
1624
1625     if (ctx == NULL) {
1626         EVPerr(0, EVP_R_COMMAND_NOT_SUPPORTED);
1627         return -2;
1628     }
1629
1630     switch (evp_pkey_ctx_state(ctx)) {
1631     case EVP_PKEY_STATE_PROVIDER:
1632         return legacy_ctrl_str_to_param(ctx, name, value);
1633     case EVP_PKEY_STATE_UNKNOWN:
1634     case EVP_PKEY_STATE_LEGACY:
1635         if (ctx == NULL || ctx->pmeth == NULL || ctx->pmeth->ctrl_str == NULL) {
1636             EVPerr(0, EVP_R_COMMAND_NOT_SUPPORTED);
1637             return -2;
1638         }
1639         if (strcmp(name, "digest") == 0)
1640             ret = EVP_PKEY_CTX_md(ctx,
1641                                   EVP_PKEY_OP_TYPE_SIG | EVP_PKEY_OP_TYPE_CRYPT,
1642                                   EVP_PKEY_CTRL_MD, value);
1643         else
1644             ret = ctx->pmeth->ctrl_str(ctx, name, value);
1645         break;
1646     }
1647
1648     return ret;
1649 }
1650
1651 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
1652                           const char *name, const char *value)
1653 {
1654     int ret = 0;
1655
1656     /* If unsupported, we don't want that reported here */
1657     ERR_set_mark();
1658     ret = evp_pkey_ctx_store_cached_data(ctx, -1, -1, -1,
1659                                          name, value, strlen(value) + 1);
1660     if (ret == -2) {
1661         ERR_pop_to_mark();
1662     } else {
1663         ERR_clear_last_mark();
1664         /*
1665          * If there was an error, there was an error.
1666          * If the operation isn't initialized yet, we also return, as
1667          * the saved values will be used then anyway.
1668          */
1669         if (ret < 1 || ctx->operation == EVP_PKEY_OP_UNDEFINED)
1670             return ret;
1671     }
1672
1673     return evp_pkey_ctx_ctrl_str_int(ctx, name, value);
1674 }
1675
1676 static int decode_cmd(int cmd, const char *name)
1677 {
1678     if (cmd == -1) {
1679         /*
1680          * The consequence of the assertion not being true is that this
1681          * function will return -1, which will cause the calling functions
1682          * to signal that the command is unsupported...  in non-debug mode.
1683          */
1684         if (ossl_assert(name != NULL))
1685             if (strcmp(name, "distid") == 0 || strcmp(name, "hexdistid") == 0)
1686                 cmd = EVP_PKEY_CTRL_SET1_ID;
1687     }
1688
1689     return cmd;
1690 }
1691
1692 static int evp_pkey_ctx_store_cached_data(EVP_PKEY_CTX *ctx,
1693                                           int keytype, int optype,
1694                                           int cmd, const char *name,
1695                                           const void *data, size_t data_len)
1696 {
1697     if ((keytype != -1 && ctx->pmeth->pkey_id != keytype)
1698         || ((optype != -1) && !(ctx->operation & optype))) {
1699         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_OPERATION);
1700         return -1;
1701     }
1702
1703     cmd = decode_cmd(cmd, name);
1704     switch (cmd) {
1705     case EVP_PKEY_CTRL_SET1_ID:
1706         evp_pkey_ctx_free_cached_data(ctx, cmd, name);
1707         if (name != NULL) {
1708             ctx->cached_parameters.dist_id_name = OPENSSL_strdup(name);
1709             if (ctx->cached_parameters.dist_id_name == NULL) {
1710                 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1711                 return 0;
1712             }
1713         }
1714         if (data_len > 0) {
1715             ctx->cached_parameters.dist_id = OPENSSL_memdup(data, data_len);
1716             if (ctx->cached_parameters.dist_id == NULL) {
1717                 ERR_raise(ERR_LIB_EVP, ERR_R_MALLOC_FAILURE);
1718                 return 0;
1719             }
1720         }
1721         ctx->cached_parameters.dist_id_set = 1;
1722         ctx->cached_parameters.dist_id_len = data_len;
1723         return 1;
1724     }
1725
1726     ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1727     return -2;
1728 }
1729
1730 static void evp_pkey_ctx_free_cached_data(EVP_PKEY_CTX *ctx,
1731                                           int cmd, const char *name)
1732 {
1733     cmd = decode_cmd(cmd, name);
1734     switch (cmd) {
1735     case EVP_PKEY_CTRL_SET1_ID:
1736         OPENSSL_free(ctx->cached_parameters.dist_id);
1737         OPENSSL_free(ctx->cached_parameters.dist_id_name);
1738         ctx->cached_parameters.dist_id = NULL;
1739         ctx->cached_parameters.dist_id_name = NULL;
1740         break;
1741     }
1742 }
1743
1744 static void evp_pkey_ctx_free_all_cached_data(EVP_PKEY_CTX *ctx)
1745 {
1746     evp_pkey_ctx_free_cached_data(ctx, EVP_PKEY_CTRL_SET1_ID, NULL);
1747 }
1748
1749 int evp_pkey_ctx_use_cached_data(EVP_PKEY_CTX *ctx)
1750 {
1751     int ret = 1;
1752
1753     if (ret && ctx->cached_parameters.dist_id_set) {
1754         const char *name = ctx->cached_parameters.dist_id_name;
1755         const void *val = ctx->cached_parameters.dist_id;
1756         size_t len = ctx->cached_parameters.dist_id_len;
1757
1758         if (name != NULL)
1759             ret = evp_pkey_ctx_ctrl_str_int(ctx, name, val);
1760         else
1761             ret = evp_pkey_ctx_ctrl_int(ctx, -1, ctx->operation,
1762                                         EVP_PKEY_CTRL_SET1_ID,
1763                                         (int)len, (void *)val);
1764     }
1765
1766     return ret;
1767 }
1768
1769 /* Utility functions to send a string of hex string to a ctrl */
1770
1771 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
1772 {
1773     size_t len;
1774
1775     len = strlen(str);
1776     if (len > INT_MAX)
1777         return -1;
1778     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
1779 }
1780
1781 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
1782 {
1783     unsigned char *bin;
1784     long binlen;
1785     int rv = -1;
1786
1787     bin = OPENSSL_hexstr2buf(hex, &binlen);
1788     if (bin == NULL)
1789         return 0;
1790     if (binlen <= INT_MAX)
1791         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
1792     OPENSSL_free(bin);
1793     return rv;
1794 }
1795
1796 /* Pass a message digest to a ctrl */
1797 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
1798 {
1799     const EVP_MD *m;
1800
1801     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
1802         EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
1803         return 0;
1804     }
1805     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
1806 }
1807
1808 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
1809 {
1810     return ctx->operation;
1811 }
1812
1813 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
1814 {
1815     ctx->keygen_info = dat;
1816     ctx->keygen_info_count = datlen;
1817 }
1818
1819 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
1820 {
1821     ctx->data = data;
1822 }
1823
1824 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
1825 {
1826     return ctx->data;
1827 }
1828
1829 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
1830 {
1831     return ctx->pkey;
1832 }
1833
1834 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
1835 {
1836     return ctx->peerkey;
1837 }
1838
1839 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
1840 {
1841     ctx->app_data = data;
1842 }
1843
1844 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
1845 {
1846     return ctx->app_data;
1847 }
1848
1849 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1850                             int (*init) (EVP_PKEY_CTX *ctx))
1851 {
1852     pmeth->init = init;
1853 }
1854
1855 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1856                             int (*copy) (EVP_PKEY_CTX *dst,
1857                                          const EVP_PKEY_CTX *src))
1858 {
1859     pmeth->copy = copy;
1860 }
1861
1862 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1863                                void (*cleanup) (EVP_PKEY_CTX *ctx))
1864 {
1865     pmeth->cleanup = cleanup;
1866 }
1867
1868 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1869                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1870                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
1871                                                  EVP_PKEY *pkey))
1872 {
1873     pmeth->paramgen_init = paramgen_init;
1874     pmeth->paramgen = paramgen;
1875 }
1876
1877 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1878                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
1879                               int (*keygen) (EVP_PKEY_CTX *ctx,
1880                                              EVP_PKEY *pkey))
1881 {
1882     pmeth->keygen_init = keygen_init;
1883     pmeth->keygen = keygen;
1884 }
1885
1886 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1887                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1888                             int (*sign) (EVP_PKEY_CTX *ctx,
1889                                          unsigned char *sig, size_t *siglen,
1890                                          const unsigned char *tbs,
1891                                          size_t tbslen))
1892 {
1893     pmeth->sign_init = sign_init;
1894     pmeth->sign = sign;
1895 }
1896
1897 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1898                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1899                               int (*verify) (EVP_PKEY_CTX *ctx,
1900                                              const unsigned char *sig,
1901                                              size_t siglen,
1902                                              const unsigned char *tbs,
1903                                              size_t tbslen))
1904 {
1905     pmeth->verify_init = verify_init;
1906     pmeth->verify = verify;
1907 }
1908
1909 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1910                                       int (*verify_recover_init) (EVP_PKEY_CTX
1911                                                                   *ctx),
1912                                       int (*verify_recover) (EVP_PKEY_CTX
1913                                                              *ctx,
1914                                                              unsigned char
1915                                                              *sig,
1916                                                              size_t *siglen,
1917                                                              const unsigned
1918                                                              char *tbs,
1919                                                              size_t tbslen))
1920 {
1921     pmeth->verify_recover_init = verify_recover_init;
1922     pmeth->verify_recover = verify_recover;
1923 }
1924
1925 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1926                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1927                                                     EVP_MD_CTX *mctx),
1928                                int (*signctx) (EVP_PKEY_CTX *ctx,
1929                                                unsigned char *sig,
1930                                                size_t *siglen,
1931                                                EVP_MD_CTX *mctx))
1932 {
1933     pmeth->signctx_init = signctx_init;
1934     pmeth->signctx = signctx;
1935 }
1936
1937 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1938                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1939                                                         EVP_MD_CTX *mctx),
1940                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1941                                                    const unsigned char *sig,
1942                                                    int siglen,
1943                                                    EVP_MD_CTX *mctx))
1944 {
1945     pmeth->verifyctx_init = verifyctx_init;
1946     pmeth->verifyctx = verifyctx;
1947 }
1948
1949 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1950                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1951                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1952                                                  unsigned char *out,
1953                                                  size_t *outlen,
1954                                                  const unsigned char *in,
1955                                                  size_t inlen))
1956 {
1957     pmeth->encrypt_init = encrypt_init;
1958     pmeth->encrypt = encryptfn;
1959 }
1960
1961 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1962                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1963                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1964                                                unsigned char *out,
1965                                                size_t *outlen,
1966                                                const unsigned char *in,
1967                                                size_t inlen))
1968 {
1969     pmeth->decrypt_init = decrypt_init;
1970     pmeth->decrypt = decrypt;
1971 }
1972
1973 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1974                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1975                               int (*derive) (EVP_PKEY_CTX *ctx,
1976                                              unsigned char *key,
1977                                              size_t *keylen))
1978 {
1979     pmeth->derive_init = derive_init;
1980     pmeth->derive = derive;
1981 }
1982
1983 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1984                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1985                                          void *p2),
1986                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1987                                              const char *type,
1988                                              const char *value))
1989 {
1990     pmeth->ctrl = ctrl;
1991     pmeth->ctrl_str = ctrl_str;
1992 }
1993
1994 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1995     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1996                        const unsigned char *tbs, size_t tbslen))
1997 {
1998     pmeth->digestsign = digestsign;
1999 }
2000
2001 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
2002     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
2003                          size_t siglen, const unsigned char *tbs,
2004                          size_t tbslen))
2005 {
2006     pmeth->digestverify = digestverify;
2007 }
2008
2009 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
2010                              int (*check) (EVP_PKEY *pkey))
2011 {
2012     pmeth->check = check;
2013 }
2014
2015 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
2016                                     int (*check) (EVP_PKEY *pkey))
2017 {
2018     pmeth->public_check = check;
2019 }
2020
2021 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
2022                                    int (*check) (EVP_PKEY *pkey))
2023 {
2024     pmeth->param_check = check;
2025 }
2026
2027 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
2028                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
2029                                                            EVP_MD_CTX *mctx))
2030 {
2031     pmeth->digest_custom = digest_custom;
2032 }
2033
2034 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
2035                             int (**pinit) (EVP_PKEY_CTX *ctx))
2036 {
2037     *pinit = pmeth->init;
2038 }
2039
2040 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
2041                             int (**pcopy) (EVP_PKEY_CTX *dst,
2042                                            const EVP_PKEY_CTX *src))
2043 {
2044     *pcopy = pmeth->copy;
2045 }
2046
2047 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
2048                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
2049 {
2050     *pcleanup = pmeth->cleanup;
2051 }
2052
2053 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
2054                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
2055                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
2056                                                    EVP_PKEY *pkey))
2057 {
2058     if (pparamgen_init)
2059         *pparamgen_init = pmeth->paramgen_init;
2060     if (pparamgen)
2061         *pparamgen = pmeth->paramgen;
2062 }
2063
2064 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
2065                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
2066                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
2067                                                EVP_PKEY *pkey))
2068 {
2069     if (pkeygen_init)
2070         *pkeygen_init = pmeth->keygen_init;
2071     if (pkeygen)
2072         *pkeygen = pmeth->keygen;
2073 }
2074
2075 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
2076                             int (**psign_init) (EVP_PKEY_CTX *ctx),
2077                             int (**psign) (EVP_PKEY_CTX *ctx,
2078                                            unsigned char *sig, size_t *siglen,
2079                                            const unsigned char *tbs,
2080                                            size_t tbslen))
2081 {
2082     if (psign_init)
2083         *psign_init = pmeth->sign_init;
2084     if (psign)
2085         *psign = pmeth->sign;
2086 }
2087
2088 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
2089                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
2090                               int (**pverify) (EVP_PKEY_CTX *ctx,
2091                                                const unsigned char *sig,
2092                                                size_t siglen,
2093                                                const unsigned char *tbs,
2094                                                size_t tbslen))
2095 {
2096     if (pverify_init)
2097         *pverify_init = pmeth->verify_init;
2098     if (pverify)
2099         *pverify = pmeth->verify;
2100 }
2101
2102 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
2103                                       int (**pverify_recover_init) (EVP_PKEY_CTX
2104                                                                     *ctx),
2105                                       int (**pverify_recover) (EVP_PKEY_CTX
2106                                                                *ctx,
2107                                                                unsigned char
2108                                                                *sig,
2109                                                                size_t *siglen,
2110                                                                const unsigned
2111                                                                char *tbs,
2112                                                                size_t tbslen))
2113 {
2114     if (pverify_recover_init)
2115         *pverify_recover_init = pmeth->verify_recover_init;
2116     if (pverify_recover)
2117         *pverify_recover = pmeth->verify_recover;
2118 }
2119
2120 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
2121                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
2122                                                       EVP_MD_CTX *mctx),
2123                                int (**psignctx) (EVP_PKEY_CTX *ctx,
2124                                                  unsigned char *sig,
2125                                                  size_t *siglen,
2126                                                  EVP_MD_CTX *mctx))
2127 {
2128     if (psignctx_init)
2129         *psignctx_init = pmeth->signctx_init;
2130     if (psignctx)
2131         *psignctx = pmeth->signctx;
2132 }
2133
2134 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
2135                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
2136                                                           EVP_MD_CTX *mctx),
2137                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
2138                                                      const unsigned char *sig,
2139                                                      int siglen,
2140                                                      EVP_MD_CTX *mctx))
2141 {
2142     if (pverifyctx_init)
2143         *pverifyctx_init = pmeth->verifyctx_init;
2144     if (pverifyctx)
2145         *pverifyctx = pmeth->verifyctx;
2146 }
2147
2148 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
2149                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
2150                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
2151                                                    unsigned char *out,
2152                                                    size_t *outlen,
2153                                                    const unsigned char *in,
2154                                                    size_t inlen))
2155 {
2156     if (pencrypt_init)
2157         *pencrypt_init = pmeth->encrypt_init;
2158     if (pencryptfn)
2159         *pencryptfn = pmeth->encrypt;
2160 }
2161
2162 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
2163                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
2164                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
2165                                                  unsigned char *out,
2166                                                  size_t *outlen,
2167                                                  const unsigned char *in,
2168                                                  size_t inlen))
2169 {
2170     if (pdecrypt_init)
2171         *pdecrypt_init = pmeth->decrypt_init;
2172     if (pdecrypt)
2173         *pdecrypt = pmeth->decrypt;
2174 }
2175
2176 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
2177                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
2178                               int (**pderive) (EVP_PKEY_CTX *ctx,
2179                                                unsigned char *key,
2180                                                size_t *keylen))
2181 {
2182     if (pderive_init)
2183         *pderive_init = pmeth->derive_init;
2184     if (pderive)
2185         *pderive = pmeth->derive;
2186 }
2187
2188 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
2189                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
2190                                            void *p2),
2191                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
2192                                                const char *type,
2193                                                const char *value))
2194 {
2195     if (pctrl)
2196         *pctrl = pmeth->ctrl;
2197     if (pctrl_str)
2198         *pctrl_str = pmeth->ctrl_str;
2199 }
2200
2201 void EVP_PKEY_meth_get_digestsign(EVP_PKEY_METHOD *pmeth,
2202     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
2203                         const unsigned char *tbs, size_t tbslen))
2204 {
2205     if (digestsign)
2206         *digestsign = pmeth->digestsign;
2207 }
2208
2209 void EVP_PKEY_meth_get_digestverify(EVP_PKEY_METHOD *pmeth,
2210     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
2211                           size_t siglen, const unsigned char *tbs,
2212                           size_t tbslen))
2213 {
2214     if (digestverify)
2215         *digestverify = pmeth->digestverify;
2216 }
2217
2218 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
2219                              int (**pcheck) (EVP_PKEY *pkey))
2220 {
2221     if (pcheck != NULL)
2222         *pcheck = pmeth->check;
2223 }
2224
2225 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
2226                                     int (**pcheck) (EVP_PKEY *pkey))
2227 {
2228     if (pcheck != NULL)
2229         *pcheck = pmeth->public_check;
2230 }
2231
2232 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
2233                                    int (**pcheck) (EVP_PKEY *pkey))
2234 {
2235     if (pcheck != NULL)
2236         *pcheck = pmeth->param_check;
2237 }
2238
2239 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
2240                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
2241                                                              EVP_MD_CTX *mctx))
2242 {
2243     if (pdigest_custom != NULL)
2244         *pdigest_custom = pmeth->digest_custom;
2245 }
2246
2247 #endif /* FIPS_MODULE */