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 "internal/ffc.h"
  30 #include "internal/numbers.h"
  31 #include "internal/provider.h"
  32 #include "evp_local.h"
  33
  34 #ifndef FIPS_MODULE
  35
  36 typedef const EVP_PKEY_METHOD *(*pmeth_fn)(void);
  37 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
  38
  39 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
  40
  41 /* This array needs to be in order of NIDs */
  42 static pmeth_fn standard_methods[] = {
  43 # ifndef OPENSSL_NO_RSA
  44     rsa_pkey_method,
  45 # endif
  46 # ifndef OPENSSL_NO_DH
  47     dh_pkey_method,
  48 # endif
  49 # ifndef OPENSSL_NO_DSA
  50     dsa_pkey_method,
  51 # endif
  52 # ifndef OPENSSL_NO_EC
  53     ec_pkey_method,
  54 # endif
  55 # ifndef OPENSSL_NO_RSA
  56     rsa_pss_pkey_method,
  57 # endif
  58 # ifndef OPENSSL_NO_DH
  59     dhx_pkey_method,
  60 # endif
  61 # ifndef OPENSSL_NO_EC
  62     ecx25519_pkey_method,
  63     ecx448_pkey_method,
  64 # endif
  65 # ifndef OPENSSL_NO_EC
  66     ed25519_pkey_method,
  67     ed448_pkey_method,
  68 # endif
  69 # ifndef OPENSSL_NO_SM2
  70     sm2_pkey_method,
  71 # endif
  72 };
  73
  74 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  75
  76 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
  77 {
  78     return ((*a)->pkey_id - ((**b)())->pkey_id);
  79 }
  80
  81 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  82
  83 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  84                      const EVP_PKEY_METHOD *const *b)
  85 {
  86     return ((*a)->pkey_id - (*b)->pkey_id);
  87 }
  88
  89 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
  90 {
  91     pmeth_fn *ret;
  92     EVP_PKEY_METHOD tmp;
  93     const EVP_PKEY_METHOD *t = &tmp;
  94
  95     tmp.pkey_id = type;
  96     if (app_pkey_methods) {
  97         int idx;
  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     ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
 103                                  sizeof(standard_methods) /
 104                                  sizeof(pmeth_fn));
 105     if (ret == NULL || *ret == NULL)
 106         return NULL;
 107     return (**ret)();
 108 }
 109
 110 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 111 {
 112     EVP_PKEY_METHOD *pmeth;
 113
 114     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 115     if (pmeth == NULL) {
 116         EVPerr(EVP_F_EVP_PKEY_METH_NEW, ERR_R_MALLOC_FAILURE);
 117         return NULL;
 118     }
 119
 120     pmeth->pkey_id = id;
 121     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 122     return pmeth;
 123 }
 124 #endif /* FIPS_MODULE */
 125
 126 static int is_legacy_alg(int id, const char *keytype)
 127 {
 128 #ifndef FIPS_MODULE
 129     /* Certain EVP_PKEY keytypes are only available in legacy form */
 130     if (id == -1) {
 131         id = OBJ_sn2nid(keytype);
 132         if (id == NID_undef)
 133             id = OBJ_ln2nid(keytype);
 134         if (id == NID_undef)
 135             return  0;
 136     }
 137     switch (id) {
 138     /*
 139      * TODO(3.0): Remove SM2 and DHX when they are converted to have provider
 140      * support
 141      */
 142     case EVP_PKEY_SM2:
 143         return 1;
 144     default:
 145         return 0;
 146     }
 147 #else
 148     return 0;
 149 #endif
 150 }
 151
 152 static EVP_PKEY_CTX *int_ctx_new(OPENSSL_CTX *libctx,
 153                                  EVP_PKEY *pkey, ENGINE *e,
 154                                  const char *keytype, const char *propquery,
 155                                  int id)
 156
 157 {
 158     EVP_PKEY_CTX *ret;
 159     const EVP_PKEY_METHOD *pmeth = NULL;
 160     EVP_KEYMGMT *keymgmt = NULL;
 161
 162     /*
 163      * When using providers, the context is bound to the algo implementation
 164      * later.
 165      */
 166     if (pkey == NULL && e == NULL && id == -1)
 167         goto common;
 168
 169     /*
 170      * If the internal key is provided, we extract the keytype from its
 171      * keymgmt and skip over the legacy code.
 172      */
 173     if (pkey != NULL && evp_pkey_is_provided(pkey)) {
 174         /* If we have an engine, something went wrong somewhere... */
 175         if (!ossl_assert(e == NULL))
 176             return NULL;
 177         keytype = evp_first_name(pkey->keymgmt->prov, pkey->keymgmt->name_id);
 178         goto common;
 179     }
 180 #ifndef FIPS_MODULE
 181     /* TODO(3.0) Legacy code should be removed when all is provider based */
 182     /* BEGIN legacy */
 183     if (id == -1) {
 184         if (pkey == NULL)
 185             return NULL;
 186         id = pkey->type;
 187     }
 188
 189     /*
 190      * Here, we extract what information we can for the purpose of
 191      * supporting usage with implementations from providers, to make
 192      * for a smooth transition from legacy stuff to provider based stuff.
 193      *
 194      * If an engine is given, this is entirely legacy, and we should not
 195      * pretend anything else, so we only set the name when no engine is
 196      * given.  If both are already given, someone made a mistake, and
 197      * since that can only happen internally, it's safe to make an
 198      * assertion.
 199      */
 200     if (!ossl_assert(e == NULL || keytype == NULL))
 201         return NULL;
 202     if (e == NULL)
 203         keytype = OBJ_nid2sn(id);
 204
 205 # ifndef OPENSSL_NO_ENGINE
 206     if (e == NULL && pkey != NULL)
 207         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 208     /* Try to find an ENGINE which implements this method */
 209     if (e) {
 210         if (!ENGINE_init(e)) {
 211             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
 212             return NULL;
 213         }
 214     } else {
 215         e = ENGINE_get_pkey_meth_engine(id);
 216     }
 217
 218     /*
 219      * If an ENGINE handled this method look it up. Otherwise use internal
 220      * tables.
 221      */
 222     if (e != NULL) {
 223         pmeth = ENGINE_get_pkey_meth(e, id);
 224         /*
 225          * We are supposed to use an engine, so no point in looking for a
 226          * provided implementation. If pmeth is NULL here we just fail.
 227          */
 228         if (pmeth == NULL) {
 229             ENGINE_finish(e);
 230             EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
 231             return NULL;
 232         }
 233     } else
 234 # endif
 235         pmeth = EVP_PKEY_meth_find(id);
 236         /*
 237          * if pmeth is NULL here we can keep trying to see if we have a provided
 238          * implementation below.
 239          */
 240
 241     /* END legacy */
 242 #endif /* FIPS_MODULE */
 243  common:
 244     /*
 245      * If there's no engine and there's a name, we try fetching a provider
 246      * implementation.
 247      */
 248     if (e == NULL && keytype != NULL) {
 249         int legacy = is_legacy_alg(id, keytype);
 250
 251         if (legacy) {
 252             /* This could fail so ignore errors */
 253             ERR_set_mark();
 254         }
 255
 256         keymgmt = EVP_KEYMGMT_fetch(libctx, keytype, propquery);
 257         if (legacy) {
 258             ERR_pop_to_mark();
 259         } else if (keymgmt == NULL) {
 260             EVPerr(EVP_F_INT_CTX_NEW, EVP_R_FETCH_FAILED);
 261             return NULL;
 262         }
 263     }
 264
 265     ret = OPENSSL_zalloc(sizeof(*ret));
 266     if (ret == NULL) {
 267         EVP_KEYMGMT_free(keymgmt);
 268 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 269         ENGINE_finish(e);
 270 #endif
 271         EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
 272         return NULL;
 273     }
 274     ret->libctx = libctx;
 275     ret->propquery = propquery;
 276     ret->keytype = keytype;
 277     ret->keymgmt = keymgmt;
 278     ret->engine = e;
 279     ret->pmeth = pmeth;
 280     ret->operation = EVP_PKEY_OP_UNDEFINED;
 281     ret->pkey = pkey;
 282     if (pkey != NULL)
 283         EVP_PKEY_up_ref(pkey);
 284
 285     if (pmeth != NULL && pmeth->init != NULL) {
 286         if (pmeth->init(ret) <= 0) {
 287             ret->pmeth = NULL;
 288             EVP_PKEY_CTX_free(ret);
 289             return NULL;
 290         }
 291     }
 292
 293     return ret;
 294 }
 295
 296 /*- All methods below can also be used in FIPS_MODULE */
 297
 298 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OPENSSL_CTX *libctx,
 299                                          const char *name,
 300                                          const char *propquery)
 301 {
 302     return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
 303 }
 304
 305 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OPENSSL_CTX *libctx, EVP_PKEY *pkey,
 306                                          const char *propquery)
 307 {
 308     return int_ctx_new(libctx, pkey, NULL, NULL, propquery, -1);
 309 }
 310
 311 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
 312 {
 313     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 314         if (ctx->op.sig.sigprovctx != NULL && ctx->op.sig.signature != NULL)
 315             ctx->op.sig.signature->freectx(ctx->op.sig.sigprovctx);
 316         EVP_SIGNATURE_free(ctx->op.sig.signature);
 317         ctx->op.sig.sigprovctx = NULL;
 318         ctx->op.sig.signature = NULL;
 319     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 320         if (ctx->op.kex.exchprovctx != NULL && ctx->op.kex.exchange != NULL)
 321             ctx->op.kex.exchange->freectx(ctx->op.kex.exchprovctx);
 322         EVP_KEYEXCH_free(ctx->op.kex.exchange);
 323         ctx->op.kex.exchprovctx = NULL;
 324         ctx->op.kex.exchange = NULL;
 325     }
 326 /* TODO(3.0): add dependancies and uncomment this when available for fips mode */
 327 #ifndef FIPS_MODULE
 328     else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
 329         if (ctx->op.ciph.ciphprovctx != NULL && ctx->op.ciph.cipher != NULL)
 330             ctx->op.ciph.cipher->freectx(ctx->op.ciph.ciphprovctx);
 331         EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
 332         ctx->op.ciph.ciphprovctx = NULL;
 333         ctx->op.ciph.cipher = NULL;
 334     } else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
 335         if (ctx->op.keymgmt.genctx != NULL && ctx->keymgmt != NULL)
 336             evp_keymgmt_gen_cleanup(ctx->keymgmt, ctx->op.keymgmt.genctx);
 337     }
 338 #endif
 339 }
 340
 341 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 342 {
 343     if (ctx == NULL)
 344         return;
 345     if (ctx->pmeth && ctx->pmeth->cleanup)
 346         ctx->pmeth->cleanup(ctx);
 347
 348     evp_pkey_ctx_free_old_ops(ctx);
 349     EVP_KEYMGMT_free(ctx->keymgmt);
 350
 351     EVP_PKEY_free(ctx->pkey);
 352     EVP_PKEY_free(ctx->peerkey);
 353 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 354     ENGINE_finish(ctx->engine);
 355 #endif
 356     OPENSSL_free(ctx);
 357 }
 358
 359 #ifndef FIPS_MODULE
 360
 361 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 362                              const EVP_PKEY_METHOD *meth)
 363 {
 364     if (ppkey_id)
 365         *ppkey_id = meth->pkey_id;
 366     if (pflags)
 367         *pflags = meth->flags;
 368 }
 369
 370 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 371 {
 372     int pkey_id = dst->pkey_id;
 373     int flags = dst->flags;
 374
 375     *dst = *src;
 376
 377     /* We only copy the function pointers so restore the other values */
 378     dst->pkey_id = pkey_id;
 379     dst->flags = flags;
 380 }
 381
 382 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 383 {
 384     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 385         OPENSSL_free(pmeth);
 386 }
 387
 388 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 389 {
 390     return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
 391 }
 392
 393 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 394 {
 395     return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
 396 }
 397
 398 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 399 {
 400     EVP_PKEY_CTX *rctx;
 401
 402     if (((pctx->pmeth == NULL) || (pctx->pmeth->copy == NULL))
 403             && ((EVP_PKEY_CTX_IS_DERIVE_OP(pctx)
 404                  && pctx->op.kex.exchprovctx == NULL)
 405                 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)
 406                     && pctx->op.sig.sigprovctx == NULL)))
 407         return NULL;
 408 # ifndef OPENSSL_NO_ENGINE
 409     /* Make sure it's safe to copy a pkey context using an ENGINE */
 410     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 411         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
 412         return 0;
 413     }
 414 # endif
 415     rctx = OPENSSL_zalloc(sizeof(*rctx));
 416     if (rctx == NULL) {
 417         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_MALLOC_FAILURE);
 418         return NULL;
 419     }
 420
 421     if (pctx->pkey != NULL)
 422         EVP_PKEY_up_ref(pctx->pkey);
 423     rctx->pkey = pctx->pkey;
 424     rctx->operation = pctx->operation;
 425     rctx->libctx = pctx->libctx;
 426     rctx->keytype = pctx->keytype;
 427     rctx->propquery = pctx->propquery;
 428
 429     if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
 430         if (pctx->op.kex.exchange != NULL) {
 431             rctx->op.kex.exchange = pctx->op.kex.exchange;
 432             if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange)) {
 433                 OPENSSL_free(rctx);
 434                 return NULL;
 435             }
 436         }
 437         if (pctx->op.kex.exchprovctx != NULL) {
 438             if (!ossl_assert(pctx->op.kex.exchange != NULL))
 439                 return NULL;
 440             rctx->op.kex.exchprovctx
 441                 = pctx->op.kex.exchange->dupctx(pctx->op.kex.exchprovctx);
 442             if (rctx->op.kex.exchprovctx == NULL) {
 443                 EVP_KEYEXCH_free(rctx->op.kex.exchange);
 444                 OPENSSL_free(rctx);
 445                 return NULL;
 446             }
 447             return rctx;
 448         }
 449     } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
 450         if (pctx->op.sig.signature != NULL) {
 451             rctx->op.sig.signature = pctx->op.sig.signature;
 452             if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature)) {
 453                 OPENSSL_free(rctx);
 454                 return NULL;
 455             }
 456         }
 457         if (pctx->op.sig.sigprovctx != NULL) {
 458             if (!ossl_assert(pctx->op.sig.signature != NULL))
 459                 return NULL;
 460             rctx->op.sig.sigprovctx
 461                 = pctx->op.sig.signature->dupctx(pctx->op.sig.sigprovctx);
 462             if (rctx->op.sig.sigprovctx == NULL) {
 463                 EVP_SIGNATURE_free(rctx->op.sig.signature);
 464                 OPENSSL_free(rctx);
 465                 return NULL;
 466             }
 467             return rctx;
 468         }
 469     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
 470         if (pctx->op.ciph.cipher != NULL) {
 471             rctx->op.ciph.cipher = pctx->op.ciph.cipher;
 472             if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher)) {
 473                 OPENSSL_free(rctx);
 474                 return NULL;
 475             }
 476         }
 477         if (pctx->op.ciph.ciphprovctx != NULL) {
 478             if (!ossl_assert(pctx->op.ciph.cipher != NULL))
 479                 return NULL;
 480             rctx->op.ciph.ciphprovctx
 481                 = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.ciphprovctx);
 482             if (rctx->op.ciph.ciphprovctx == NULL) {
 483                 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
 484                 OPENSSL_free(rctx);
 485                 return NULL;
 486             }
 487             return rctx;
 488         }
 489     }
 490
 491     rctx->pmeth = pctx->pmeth;
 492 # ifndef OPENSSL_NO_ENGINE
 493     rctx->engine = pctx->engine;
 494 # endif
 495
 496     if (pctx->peerkey)
 497         EVP_PKEY_up_ref(pctx->peerkey);
 498     rctx->peerkey = pctx->peerkey;
 499
 500     if (pctx->pmeth->copy(rctx, pctx) > 0)
 501         return rctx;
 502
 503     rctx->pmeth = NULL;
 504     EVP_PKEY_CTX_free(rctx);
 505     return NULL;
 506
 507 }
 508
 509 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 510 {
 511     if (app_pkey_methods == NULL) {
 512         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 513         if (app_pkey_methods == NULL){
 514             EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 515             return 0;
 516         }
 517     }
 518     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 519         EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 520         return 0;
 521     }
 522     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 523     return 1;
 524 }
 525
 526 void evp_app_cleanup_int(void)
 527 {
 528     if (app_pkey_methods != NULL)
 529         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 530 }
 531
 532 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 533 {
 534     const EVP_PKEY_METHOD *ret;
 535
 536     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 537
 538     return ret == NULL ? 0 : 1;
 539 }
 540
 541 size_t EVP_PKEY_meth_get_count(void)
 542 {
 543     size_t rv = OSSL_NELEM(standard_methods);
 544
 545     if (app_pkey_methods)
 546         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 547     return rv;
 548 }
 549
 550 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 551 {
 552     if (idx < OSSL_NELEM(standard_methods))
 553         return (standard_methods[idx])();
 554     if (app_pkey_methods == NULL)
 555         return NULL;
 556     idx -= OSSL_NELEM(standard_methods);
 557     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 558         return NULL;
 559     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 560 }
 561 #endif
 562
 563 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 564 {
 565     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 566             && ctx->op.kex.exchprovctx != NULL
 567             && ctx->op.kex.exchange != NULL
 568             && ctx->op.kex.exchange->set_ctx_params != NULL)
 569         return ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.exchprovctx,
 570                                                     params);
 571     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 572             && ctx->op.sig.sigprovctx != NULL
 573             && ctx->op.sig.signature != NULL
 574             && ctx->op.sig.signature->set_ctx_params != NULL)
 575         return ctx->op.sig.signature->set_ctx_params(ctx->op.sig.sigprovctx,
 576                                                      params);
 577     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 578             && ctx->op.ciph.ciphprovctx != NULL
 579             && ctx->op.ciph.cipher != NULL
 580             && ctx->op.ciph.cipher->set_ctx_params != NULL)
 581         return ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.ciphprovctx,
 582                                                      params);
 583     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 584         && ctx->op.keymgmt.genctx != NULL
 585         && ctx->keymgmt != NULL
 586         && ctx->keymgmt->gen_set_params != NULL)
 587         return evp_keymgmt_gen_set_params(ctx->keymgmt, ctx->op.keymgmt.genctx,
 588                                           params);
 589     return 0;
 590 }
 591
 592 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 593 {
 594     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 595             && ctx->op.kex.exchprovctx != NULL
 596             && ctx->op.kex.exchange != NULL
 597             && ctx->op.kex.exchange->get_ctx_params != NULL)
 598         return ctx->op.kex.exchange->get_ctx_params(ctx->op.kex.exchprovctx,
 599                                                     params);
 600     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 601             && ctx->op.sig.sigprovctx != NULL
 602             && ctx->op.sig.signature != NULL
 603             && ctx->op.sig.signature->get_ctx_params != NULL)
 604         return ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx,
 605                                                      params);
 606     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 607             && ctx->op.ciph.ciphprovctx != NULL
 608             && ctx->op.ciph.cipher != NULL
 609             && ctx->op.ciph.cipher->get_ctx_params != NULL)
 610         return ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.ciphprovctx,
 611                                                    params);
 612     return 0;
 613 }
 614
 615 #ifndef FIPS_MODULE
 616 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx)
 617 {
 618     void *provctx;
 619
 620     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 621             && ctx->op.kex.exchange != NULL
 622             && ctx->op.kex.exchange->gettable_ctx_params != NULL) {
 623         provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
 624         return ctx->op.kex.exchange->gettable_ctx_params(provctx);
 625     }
 626     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 627             && ctx->op.sig.signature != NULL
 628             && ctx->op.sig.signature->gettable_ctx_params != NULL) {
 629         provctx = ossl_provider_ctx(
 630                       EVP_SIGNATURE_provider(ctx->op.sig.signature));
 631         return ctx->op.sig.signature->gettable_ctx_params(provctx);
 632     }
 633     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 634             && ctx->op.ciph.cipher != NULL
 635             && ctx->op.ciph.cipher->gettable_ctx_params != NULL) {
 636         provctx = ossl_provider_ctx(
 637                       EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
 638         return ctx->op.ciph.cipher->gettable_ctx_params(provctx);
 639     }
 640     return NULL;
 641 }
 642
 643 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx)
 644 {
 645     void *provctx;
 646
 647     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 648             && ctx->op.kex.exchange != NULL
 649             && ctx->op.kex.exchange->settable_ctx_params != NULL) {
 650         provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
 651         return ctx->op.kex.exchange->settable_ctx_params(provctx);
 652     }
 653     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 654             && ctx->op.sig.signature != NULL
 655             && ctx->op.sig.signature->settable_ctx_params != NULL) {
 656         provctx = ossl_provider_ctx(
 657                       EVP_SIGNATURE_provider(ctx->op.sig.signature));
 658         return ctx->op.sig.signature->settable_ctx_params(provctx);
 659     }
 660     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 661             && ctx->op.ciph.cipher != NULL
 662             && ctx->op.ciph.cipher->settable_ctx_params != NULL) {
 663         provctx = ossl_provider_ctx(
 664                       EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
 665         return ctx->op.ciph.cipher->settable_ctx_params(provctx);
 666     }
 667     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 668             && ctx->keymgmt != NULL)
 669         return EVP_KEYMGMT_gen_settable_params(ctx->keymgmt);
 670
 671     return NULL;
 672 }
 673
 674 /*
 675  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
 676  *
 677  * Return 1 on success, 0 or negative for errors.
 678  *
 679  * In particular they return -2 if any of the params is not supported.
 680  *
 681  * They are not available in FIPS_MODULE as they depend on
 682  *      - EVP_PKEY_CTX_{get,set}_params()
 683  *      - EVP_PKEY_CTX_{gettable,settable}_params()
 684  *
 685  */
 686 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 687 {
 688     const OSSL_PARAM *p;
 689
 690     if (ctx == NULL || params == NULL)
 691         return 0;
 692
 693     for (p = params; p->key != NULL; p++) {
 694         /* Check the ctx actually understands this parameter */
 695         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_settable_params(ctx),
 696                                     p->key) == NULL )
 697             return -2;
 698     }
 699
 700     return EVP_PKEY_CTX_set_params(ctx, params);
 701 }
 702
 703 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 704 {
 705     const OSSL_PARAM *p;
 706
 707     if (ctx == NULL || params == NULL)
 708         return 0;
 709
 710     for (p = params; p->key != NULL; p++ ) {
 711         /* Check the ctx actually understands this parameter */
 712         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_gettable_params(ctx),
 713                                     p->key) == NULL )
 714             return -2;
 715     }
 716
 717     return EVP_PKEY_CTX_get_params(ctx, params);
 718 }
 719
 720 # ifndef OPENSSL_NO_DH
 721 int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad)
 722 {
 723     OSSL_PARAM dh_pad_params[2];
 724     unsigned int upad = pad;
 725
 726     /* We use EVP_PKEY_CTX_ctrl return values */
 727     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 728         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 729         return -2;
 730     }
 731
 732     /* TODO(3.0): Remove this eventually when no more legacy */
 733     if (ctx->op.kex.exchprovctx == NULL)
 734         return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_DERIVE,
 735                                  EVP_PKEY_CTRL_DH_PAD, pad, NULL);
 736
 737     dh_pad_params[0] = OSSL_PARAM_construct_uint(OSSL_EXCHANGE_PARAM_PAD, &upad);
 738     dh_pad_params[1] = OSSL_PARAM_construct_end();
 739
 740     return EVP_PKEY_CTX_set_params(ctx, dh_pad_params);
 741 }
 742 # endif
 743
 744 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
 745 {
 746     OSSL_PARAM sig_md_params[2], *p = sig_md_params;
 747     /* 80 should be big enough */
 748     char name[80] = "";
 749     const EVP_MD *tmp;
 750
 751     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 752         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 753         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 754         return -2;
 755     }
 756
 757     /* TODO(3.0): Remove this eventually when no more legacy */
 758     if (ctx->op.sig.sigprovctx == NULL)
 759         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 760                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
 761
 762     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 763                                             name,
 764                                             sizeof(name));
 765     *p = OSSL_PARAM_construct_end();
 766
 767     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
 768         return 0;
 769
 770     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
 771     if (tmp == NULL)
 772         return 0;
 773
 774     *md = tmp;
 775
 776     return 1;
 777 }
 778
 779 static int evp_pkey_ctx_set_md(EVP_PKEY_CTX *ctx, const EVP_MD *md,
 780                                int fallback, const char *param, int op,
 781                                int ctrl)
 782 {
 783     OSSL_PARAM md_params[2], *p = md_params;
 784     const char *name;
 785
 786     if (ctx == NULL || (ctx->operation & op) == 0) {
 787         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 788         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 789         return -2;
 790     }
 791
 792     /* TODO(3.0): Remove this eventually when no more legacy */
 793     if (fallback)
 794         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, 0, (void *)(md));
 795
 796     if (md == NULL) {
 797         name = "";
 798     } else {
 799         name = EVP_MD_name(md);
 800     }
 801
 802     *p++ = OSSL_PARAM_construct_utf8_string(param,
 803                                             /*
 804                                              * Cast away the const. This is read
 805                                              * only so should be safe
 806                                              */
 807                                             (char *)name, 0);
 808     *p = OSSL_PARAM_construct_end();
 809
 810     return EVP_PKEY_CTX_set_params(ctx, md_params);
 811 }
 812
 813 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 814 {
 815     return evp_pkey_ctx_set_md(ctx, md, ctx->op.sig.sigprovctx == NULL,
 816                                OSSL_SIGNATURE_PARAM_DIGEST,
 817                                EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD);
 818 }
 819
 820 int EVP_PKEY_CTX_set_tls1_prf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 821 {
 822     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.exchprovctx == NULL,
 823                                OSSL_KDF_PARAM_DIGEST,
 824                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_TLS_MD);
 825 }
 826
 827 static int evp_pkey_ctx_set1_octet_string(EVP_PKEY_CTX *ctx, int fallback,
 828                                           const char *param, int op, int ctrl,
 829                                           const unsigned char *data,
 830                                           int datalen)
 831 {
 832     OSSL_PARAM octet_string_params[2], *p = octet_string_params;
 833
 834     if (ctx == NULL || (ctx->operation & op) == 0) {
 835         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 836         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 837         return -2;
 838     }
 839
 840     /* TODO(3.0): Remove this eventually when no more legacy */
 841     if (fallback)
 842         return EVP_PKEY_CTX_ctrl(ctx, -1, op, ctrl, datalen, (void *)(data));
 843
 844     if (datalen < 0) {
 845         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_LENGTH);
 846         return 0;
 847     }
 848
 849     *p++ = OSSL_PARAM_construct_octet_string(param,
 850                                             /*
 851                                              * Cast away the const. This is read
 852                                              * only so should be safe
 853                                              */
 854                                             (unsigned char *)data,
 855                                             (size_t)datalen);
 856     *p = OSSL_PARAM_construct_end();
 857
 858     return EVP_PKEY_CTX_set_params(ctx, octet_string_params);
 859 }
 860
 861 int EVP_PKEY_CTX_set1_tls1_prf_secret(EVP_PKEY_CTX *ctx,
 862                                       const unsigned char *sec, int seclen)
 863 {
 864     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 865                                           OSSL_KDF_PARAM_SECRET,
 866                                           EVP_PKEY_OP_DERIVE,
 867                                           EVP_PKEY_CTRL_TLS_SECRET,
 868                                           sec, seclen);
 869 }
 870
 871 int EVP_PKEY_CTX_add1_tls1_prf_seed(EVP_PKEY_CTX *ctx,
 872                                     const unsigned char *seed, int seedlen)
 873 {
 874     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 875                                           OSSL_KDF_PARAM_SEED,
 876                                           EVP_PKEY_OP_DERIVE,
 877                                           EVP_PKEY_CTRL_TLS_SEED,
 878                                           seed, seedlen);
 879 }
 880
 881 int EVP_PKEY_CTX_set_hkdf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 882 {
 883     return evp_pkey_ctx_set_md(ctx, md, ctx->op.kex.exchprovctx == NULL,
 884                                OSSL_KDF_PARAM_DIGEST,
 885                                EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_HKDF_MD);
 886 }
 887
 888 int EVP_PKEY_CTX_set1_hkdf_salt(EVP_PKEY_CTX *ctx,
 889                                 const unsigned char *salt, int saltlen)
 890 {
 891     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 892                                           OSSL_KDF_PARAM_SALT,
 893                                           EVP_PKEY_OP_DERIVE,
 894                                           EVP_PKEY_CTRL_HKDF_SALT,
 895                                           salt, saltlen);
 896 }
 897
 898 int EVP_PKEY_CTX_set1_hkdf_key(EVP_PKEY_CTX *ctx,
 899                                       const unsigned char *key, int keylen)
 900 {
 901     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 902                                           OSSL_KDF_PARAM_KEY,
 903                                           EVP_PKEY_OP_DERIVE,
 904                                           EVP_PKEY_CTRL_HKDF_KEY,
 905                                           key, keylen);
 906 }
 907
 908 int EVP_PKEY_CTX_add1_hkdf_info(EVP_PKEY_CTX *ctx,
 909                                       const unsigned char *info, int infolen)
 910 {
 911     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 912                                           OSSL_KDF_PARAM_INFO,
 913                                           EVP_PKEY_OP_DERIVE,
 914                                           EVP_PKEY_CTRL_HKDF_INFO,
 915                                           info, infolen);
 916 }
 917
 918 int EVP_PKEY_CTX_hkdf_mode(EVP_PKEY_CTX *ctx, int mode)
 919 {
 920     OSSL_PARAM int_params[2], *p = int_params;
 921
 922     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 923         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 924         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 925         return -2;
 926     }
 927
 928     /* TODO(3.0): Remove this eventually when no more legacy */
 929     if (ctx->op.kex.exchprovctx == NULL)
 930         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_DERIVE,
 931                                  EVP_PKEY_CTRL_HKDF_MODE, mode, NULL);
 932
 933
 934     if (mode < 0) {
 935         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_VALUE);
 936         return 0;
 937     }
 938
 939     *p++ = OSSL_PARAM_construct_int(OSSL_KDF_PARAM_MODE, &mode);
 940     *p = OSSL_PARAM_construct_end();
 941
 942     return EVP_PKEY_CTX_set_params(ctx, int_params);
 943 }
 944
 945 int EVP_PKEY_CTX_set1_pbe_pass(EVP_PKEY_CTX *ctx, const char *pass,
 946                                int passlen)
 947 {
 948     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 949                                           OSSL_KDF_PARAM_PASSWORD,
 950                                           EVP_PKEY_OP_DERIVE,
 951                                           EVP_PKEY_CTRL_PASS,
 952                                           (const unsigned char *)pass, passlen);
 953 }
 954
 955 int EVP_PKEY_CTX_set1_scrypt_salt(EVP_PKEY_CTX *ctx,
 956                                   const unsigned char *salt, int saltlen)
 957 {
 958     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.kex.exchprovctx == NULL,
 959                                           OSSL_KDF_PARAM_SALT,
 960                                           EVP_PKEY_OP_DERIVE,
 961                                           EVP_PKEY_CTRL_SCRYPT_SALT,
 962                                           salt, saltlen);
 963 }
 964
 965 static int evp_pkey_ctx_set_uint64(EVP_PKEY_CTX *ctx, const char *param,
 966                                    int op, int ctrl, uint64_t val)
 967 {
 968     OSSL_PARAM uint64_params[2], *p = uint64_params;
 969
 970     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 971         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 972         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 973         return -2;
 974     }
 975
 976     /* TODO(3.0): Remove this eventually when no more legacy */
 977     if (ctx->op.kex.exchprovctx == NULL)
 978         return EVP_PKEY_CTX_ctrl_uint64(ctx, -1, op, ctrl, val);
 979
 980     *p++ = OSSL_PARAM_construct_uint64(param, &val);
 981     *p = OSSL_PARAM_construct_end();
 982
 983     return EVP_PKEY_CTX_set_params(ctx, uint64_params);
 984 }
 985
 986 int EVP_PKEY_CTX_set_scrypt_N(EVP_PKEY_CTX *ctx, uint64_t n)
 987 {
 988     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_N,
 989                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_N,
 990                                    n);
 991 }
 992
 993 int EVP_PKEY_CTX_set_scrypt_r(EVP_PKEY_CTX *ctx, uint64_t r)
 994 {
 995     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_R,
 996                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_R,
 997                                    r);
 998 }
 999
1000 int EVP_PKEY_CTX_set_scrypt_p(EVP_PKEY_CTX *ctx, uint64_t p)
1001 {
1002     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_P,
1003                                    EVP_PKEY_OP_DERIVE, EVP_PKEY_CTRL_SCRYPT_P,
1004                                    p);
1005 }
1006
1007 int EVP_PKEY_CTX_set_scrypt_maxmem_bytes(EVP_PKEY_CTX *ctx,
1008                                          uint64_t maxmem_bytes)
1009 {
1010     return evp_pkey_ctx_set_uint64(ctx, OSSL_KDF_PARAM_SCRYPT_MAXMEM,
1011                                    EVP_PKEY_OP_DERIVE,
1012                                    EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES,
1013                                    maxmem_bytes);
1014 }
1015
1016 int EVP_PKEY_CTX_set_mac_key(EVP_PKEY_CTX *ctx, const unsigned char *key,
1017                              int keylen)
1018 {
1019     return evp_pkey_ctx_set1_octet_string(ctx, ctx->op.keymgmt.genctx == NULL,
1020                                           OSSL_PKEY_PARAM_PRIV_KEY,
1021                                           EVP_PKEY_OP_KEYGEN,
1022                                           EVP_PKEY_CTRL_SET_MAC_KEY,
1023                                           key, keylen);
1024 }
1025
1026 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
1027                                 int cmd, int p1, void *p2)
1028 {
1029 # ifndef OPENSSL_NO_DH
1030     if (keytype == EVP_PKEY_DHX) {
1031         switch (cmd) {
1032         case EVP_PKEY_CTRL_DH_KDF_TYPE:
1033             return EVP_PKEY_CTX_set_dh_kdf_type(ctx, p1);
1034         case EVP_PKEY_CTRL_DH_KDF_MD:
1035             return EVP_PKEY_CTX_set_dh_kdf_md(ctx, p2);
1036         case EVP_PKEY_CTRL_DH_KDF_OUTLEN:
1037             return EVP_PKEY_CTX_set_dh_kdf_outlen(ctx, p1);
1038         case EVP_PKEY_CTRL_DH_KDF_UKM:
1039             return EVP_PKEY_CTX_set0_dh_kdf_ukm(ctx, p2, p1);
1040         case EVP_PKEY_CTRL_DH_KDF_OID:
1041             return EVP_PKEY_CTX_set0_dh_kdf_oid(ctx, p2);
1042         case EVP_PKEY_CTRL_GET_DH_KDF_MD:
1043             return EVP_PKEY_CTX_get_dh_kdf_md(ctx, p2);
1044         case EVP_PKEY_CTRL_GET_DH_KDF_OUTLEN:
1045             return EVP_PKEY_CTX_get_dh_kdf_outlen(ctx, p2);
1046         case EVP_PKEY_CTRL_GET_DH_KDF_UKM:
1047             return EVP_PKEY_CTX_get0_dh_kdf_ukm(ctx, p2);
1048         case EVP_PKEY_CTRL_GET_DH_KDF_OID:
1049             return EVP_PKEY_CTX_get0_dh_kdf_oid(ctx, p2);
1050         }
1051     }
1052     if (keytype == EVP_PKEY_DH) {
1053         switch (cmd) {
1054             case EVP_PKEY_CTRL_DH_PAD:
1055                 return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
1056             case EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN:
1057                 return EVP_PKEY_CTX_set_dh_paramgen_prime_len(ctx, p1);
1058             case EVP_PKEY_CTRL_DH_PARAMGEN_SUBPRIME_LEN:
1059                 return EVP_PKEY_CTX_set_dh_paramgen_subprime_len(ctx, p1);
1060             case EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR:
1061                 return EVP_PKEY_CTX_set_dh_paramgen_generator(ctx, p1);
1062             case EVP_PKEY_CTRL_DH_PARAMGEN_TYPE:
1063                 return EVP_PKEY_CTX_set_dh_paramgen_type(ctx, p1);
1064             case EVP_PKEY_CTRL_DH_RFC5114:
1065                 return EVP_PKEY_CTX_set_dh_rfc5114(ctx, p1);
1066         }
1067     }
1068 # endif
1069 # ifndef OPENSSL_NO_DSA
1070     if (keytype == EVP_PKEY_DSA) {
1071         switch (cmd) {
1072         case EVP_PKEY_CTRL_DSA_PARAMGEN_BITS:
1073             return EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, p1);
1074         case EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS:
1075             return EVP_PKEY_CTX_set_dsa_paramgen_q_bits(ctx, p1);
1076         case EVP_PKEY_CTRL_DSA_PARAMGEN_MD:
1077             return EVP_PKEY_CTX_set_dsa_paramgen_md(ctx, p2);
1078         }
1079     }
1080 # endif
1081 # ifndef OPENSSL_NO_EC
1082     if (keytype == EVP_PKEY_EC) {
1083         switch (cmd) {
1084         case EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID:
1085             return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, p1);
1086         case EVP_PKEY_CTRL_EC_ECDH_COFACTOR:
1087             if (p1 == -2) {
1088                 return EVP_PKEY_CTX_get_ecdh_cofactor_mode(ctx);
1089             } else if (p1 < -1 || p1 > 1) {
1090                 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
1091                 return -2;
1092             } else {
1093                 return EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, p1);
1094             }
1095         case EVP_PKEY_CTRL_EC_KDF_TYPE:
1096             if (p1 == -2) {
1097                 return EVP_PKEY_CTX_get_ecdh_kdf_type(ctx);
1098             } else {
1099                 return EVP_PKEY_CTX_set_ecdh_kdf_type(ctx, p1);
1100             }
1101         case EVP_PKEY_CTRL_GET_EC_KDF_MD:
1102             return EVP_PKEY_CTX_get_ecdh_kdf_md(ctx, p2);
1103         case EVP_PKEY_CTRL_EC_KDF_MD:
1104             return EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, p2);
1105         case EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN:
1106             return EVP_PKEY_CTX_get_ecdh_kdf_outlen(ctx, p2);
1107         case EVP_PKEY_CTRL_EC_KDF_OUTLEN:
1108             return EVP_PKEY_CTX_set_ecdh_kdf_outlen(ctx, p1);
1109         case EVP_PKEY_CTRL_GET_EC_KDF_UKM:
1110             return EVP_PKEY_CTX_get0_ecdh_kdf_ukm(ctx, p2);
1111         case EVP_PKEY_CTRL_EC_KDF_UKM:
1112             return EVP_PKEY_CTX_set0_ecdh_kdf_ukm(ctx, p2, p1);
1113         }
1114     }
1115 # endif
1116     if (keytype == EVP_PKEY_RSA) {
1117         switch (cmd) {
1118         case EVP_PKEY_CTRL_RSA_OAEP_MD:
1119             return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
1120         case EVP_PKEY_CTRL_GET_RSA_OAEP_MD:
1121             return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
1122         case EVP_PKEY_CTRL_RSA_MGF1_MD:
1123             return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
1124         case EVP_PKEY_CTRL_RSA_OAEP_LABEL:
1125             return EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, p2, p1);
1126         case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL:
1127             return EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, (unsigned char **)p2);
1128         case EVP_PKEY_CTRL_RSA_KEYGEN_BITS:
1129             return EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, p1);
1130         case EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP:
1131             return EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, p2);
1132         case EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES:
1133             return EVP_PKEY_CTX_set_rsa_keygen_primes(ctx, p1);
1134         }
1135     }
1136     /*
1137      * keytype == -1 is used when several key types share the same structure,
1138      * or for generic controls that are the same across multiple key types.
1139      */
1140     if (keytype == -1) {
1141         if (optype == EVP_PKEY_OP_DERIVE) {
1142             switch (cmd) {
1143             /* TLS1-PRF */
1144             case EVP_PKEY_CTRL_TLS_MD:
1145                 return EVP_PKEY_CTX_set_tls1_prf_md(ctx, p2);
1146             case EVP_PKEY_CTRL_TLS_SECRET:
1147                 return EVP_PKEY_CTX_set1_tls1_prf_secret(ctx, p2, p1);
1148             case EVP_PKEY_CTRL_TLS_SEED:
1149                 return EVP_PKEY_CTX_add1_tls1_prf_seed(ctx, p2, p1);
1150
1151             /* HKDF */
1152             case EVP_PKEY_CTRL_HKDF_MD:
1153                 return EVP_PKEY_CTX_set_hkdf_md(ctx, p2);
1154             case EVP_PKEY_CTRL_HKDF_SALT :
1155                 return EVP_PKEY_CTX_set1_hkdf_salt(ctx, p2, p1);
1156             case EVP_PKEY_CTRL_HKDF_KEY:
1157                 return EVP_PKEY_CTX_set1_hkdf_key(ctx, p2, p1);
1158             case EVP_PKEY_CTRL_HKDF_INFO:
1159                 return EVP_PKEY_CTX_add1_hkdf_info(ctx, p2, p1);
1160             case EVP_PKEY_CTRL_HKDF_MODE:
1161                 return EVP_PKEY_CTX_hkdf_mode(ctx, p1);
1162
1163             /* Scrypt */
1164             case EVP_PKEY_CTRL_PASS:
1165                 return EVP_PKEY_CTX_set1_pbe_pass(ctx, p2, p1);
1166             case EVP_PKEY_CTRL_SCRYPT_SALT:
1167                 return EVP_PKEY_CTX_set1_scrypt_salt(ctx, p2, p1);
1168             case EVP_PKEY_CTRL_SCRYPT_N:
1169                 return EVP_PKEY_CTX_set_scrypt_N(ctx, p1);
1170             case EVP_PKEY_CTRL_SCRYPT_R:
1171                 return EVP_PKEY_CTX_set_scrypt_r(ctx, p1);
1172             case EVP_PKEY_CTRL_SCRYPT_P:
1173                 return EVP_PKEY_CTX_set_scrypt_p(ctx, p1);
1174             case EVP_PKEY_CTRL_SCRYPT_MAXMEM_BYTES:
1175                 return EVP_PKEY_CTX_set_scrypt_maxmem_bytes(ctx, p1);
1176             }
1177         } else if (optype == EVP_PKEY_OP_KEYGEN) {
1178             OSSL_PARAM params[2], *p = params;
1179
1180             switch (cmd) {
1181             case EVP_PKEY_CTRL_CIPHER:
1182                 {
1183                     char *ciphname = (char *)EVP_CIPHER_name(p2);
1184
1185                     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_PKEY_PARAM_CIPHER,
1186                                                             ciphname, 0);
1187                     *p = OSSL_PARAM_construct_end();
1188
1189                     return EVP_PKEY_CTX_set_params(ctx, params);
1190                 }
1191             case EVP_PKEY_CTRL_SET_MAC_KEY:
1192                 {
1193                     *p++ = OSSL_PARAM_construct_octet_string(OSSL_PKEY_PARAM_PRIV_KEY,
1194                                                              p2, p1);
1195                     *p = OSSL_PARAM_construct_end();
1196
1197                     return EVP_PKEY_CTX_set_params(ctx, params);
1198                 }
1199             }
1200         }
1201         switch (cmd) {
1202         case EVP_PKEY_CTRL_MD:
1203             return EVP_PKEY_CTX_set_signature_md(ctx, p2);
1204         case EVP_PKEY_CTRL_GET_MD:
1205             return EVP_PKEY_CTX_get_signature_md(ctx, p2);
1206         case EVP_PKEY_CTRL_RSA_PADDING:
1207             return EVP_PKEY_CTX_set_rsa_padding(ctx, p1);
1208         case EVP_PKEY_CTRL_GET_RSA_PADDING:
1209             return EVP_PKEY_CTX_get_rsa_padding(ctx, p2);
1210         case EVP_PKEY_CTRL_GET_RSA_MGF1_MD:
1211             return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
1212         case EVP_PKEY_CTRL_RSA_PSS_SALTLEN:
1213             return EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, p1);
1214         case EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN:
1215             return EVP_PKEY_CTX_get_rsa_pss_saltlen(ctx, p2);
1216         case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
1217         case EVP_PKEY_CTRL_PKCS7_DECRYPT:
1218 # ifndef OPENSSL_NO_CMS
1219         case EVP_PKEY_CTRL_CMS_DECRYPT:
1220         case EVP_PKEY_CTRL_CMS_ENCRYPT:
1221 # endif
1222             /* TODO (3.0) Temporary hack, this should probe */
1223             if (!EVP_PKEY_is_a(EVP_PKEY_CTX_get0_pkey(ctx), "RSASSA-PSS"))
1224                 return 1;
1225             ERR_raise(ERR_LIB_EVP,
1226                       EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
1227             return -2;
1228         }
1229     }
1230
1231     /*
1232      * GOST CMS format is different for different cipher algorithms.
1233      * Most of other algorithms don't have such a difference
1234      * so this ctrl is just ignored.
1235      */
1236     if (cmd == EVP_PKEY_CTRL_CIPHER)
1237         return -2;
1238
1239     return 0;
1240 }
1241
1242 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
1243                       int cmd, int p1, void *p2)
1244 {
1245     int ret;
1246
1247     if (ctx == NULL) {
1248         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
1249         return -2;
1250     }
1251
1252     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
1253             || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
1254                 && ctx->op.sig.sigprovctx != NULL)
1255             || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
1256                 && ctx->op.ciph.ciphprovctx != NULL)
1257             || (EVP_PKEY_CTX_IS_GEN_OP(ctx)
1258                 && ctx->op.keymgmt.genctx != NULL))
1259         return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
1260
1261     if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
1262         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
1263         return -2;
1264     }
1265     if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
1266         return -1;
1267
1268     /* Skip the operation checks since this is called in a very early stage */
1269     if (ctx->pmeth->digest_custom != NULL)
1270         goto doit;
1271
1272     if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
1273         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
1274         return -1;
1275     }
1276
1277     if ((optype != -1) && !(ctx->operation & optype)) {
1278         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
1279         return -1;
1280     }
1281
1282  doit:
1283     ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
1284
1285     if (ret == -2)
1286         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
1287
1288     return ret;
1289 }
1290
1291 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
1292                              int cmd, uint64_t value)
1293 {
1294     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
1295 }
1296
1297 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
1298                                     const char *value)
1299 {
1300     if (strcmp(name, "md") == 0)
1301         name = OSSL_ALG_PARAM_DIGEST;
1302     else if (strcmp(name, "rsa_padding_mode") == 0)
1303         name = OSSL_ASYM_CIPHER_PARAM_PAD_MODE;
1304     else if (strcmp(name, "rsa_mgf1_md") == 0)
1305         name = OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST;
1306     else if (strcmp(name, "rsa_oaep_md") == 0)
1307         name = OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST;
1308     else if (strcmp(name, "rsa_oaep_label") == 0)
1309         name = OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL;
1310     else if (strcmp(name, "rsa_pss_saltlen") == 0)
1311         name = OSSL_SIGNATURE_PARAM_PSS_SALTLEN;
1312     else if (strcmp(name, "rsa_keygen_bits") == 0)
1313         name = OSSL_PKEY_PARAM_RSA_BITS;
1314     else if (strcmp(name, "rsa_keygen_pubexp") == 0)
1315         name = OSSL_PKEY_PARAM_RSA_E;
1316     else if (strcmp(name, "rsa_keygen_primes") == 0)
1317         name = OSSL_PKEY_PARAM_RSA_PRIMES;
1318     else if (strcmp(name, "rsa_pss_keygen_md") == 0)
1319         name = OSSL_PKEY_PARAM_RSA_DIGEST;
1320     else if (strcmp(name, "rsa_pss_keygen_mgf1_md") == 0)
1321         name = OSSL_PKEY_PARAM_RSA_MGF1_DIGEST;
1322     else if (strcmp(name, "rsa_pss_keygen_saltlen") == 0)
1323         name = OSSL_PKEY_PARAM_RSA_PSS_SALTLEN;
1324 # ifndef OPENSSL_NO_DSA
1325     else if (strcmp(name, "dsa_paramgen_bits") == 0)
1326         name = OSSL_PKEY_PARAM_FFC_PBITS;
1327     else if (strcmp(name, "dsa_paramgen_q_bits") == 0)
1328         name = OSSL_PKEY_PARAM_FFC_QBITS;
1329     else if (strcmp(name, "dsa_paramgen_md") == 0)
1330         name = OSSL_PKEY_PARAM_FFC_DIGEST;
1331 # endif
1332 # ifndef OPENSSL_NO_DH
1333     else if (strcmp(name, "dh_paramgen_generator") == 0)
1334         name = OSSL_PKEY_PARAM_DH_GENERATOR;
1335     else if (strcmp(name, "dh_paramgen_prime_len") == 0)
1336         name = OSSL_PKEY_PARAM_FFC_PBITS;
1337     else if (strcmp(name, "dh_paramgen_subprime_len") == 0)
1338         name = OSSL_PKEY_PARAM_FFC_QBITS;
1339     else if (strcmp(name, "dh_paramgen_type") == 0) {
1340         name = OSSL_PKEY_PARAM_FFC_TYPE;
1341         value = dh_gen_type_id2name(atoi(value));
1342     } else if (strcmp(name, "dh_param") == 0)
1343         name = OSSL_PKEY_PARAM_GROUP_NAME;
1344     else if (strcmp(name, "dh_rfc5114") == 0) {
1345         name = OSSL_PKEY_PARAM_GROUP_NAME;
1346         value = ffc_named_group_from_uid(atoi(value));
1347     } else if (strcmp(name, "dh_pad") == 0)
1348         name = OSSL_EXCHANGE_PARAM_PAD;
1349 # endif
1350 # ifndef OPENSSL_NO_EC
1351     else if (strcmp(name, "ec_paramgen_curve") == 0)
1352         name = OSSL_PKEY_PARAM_GROUP_NAME;
1353     else if (strcmp(name, "ecdh_cofactor_mode") == 0)
1354         name = OSSL_EXCHANGE_PARAM_EC_ECDH_COFACTOR_MODE;
1355     else if (strcmp(name, "ecdh_kdf_md") == 0)
1356         name = OSSL_EXCHANGE_PARAM_KDF_DIGEST;
1357     else if (strcmp(name, "ec_param_enc") == 0)
1358         name = OSSL_PKEY_PARAM_EC_ENCODING;
1359 # endif
1360     else if (strcmp(name, "N") == 0)
1361         name = OSSL_KDF_PARAM_SCRYPT_N;
1362
1363     {
1364         /*
1365          * TODO(3.0) reduce the code above to only translate known legacy
1366          * string to the corresponding core name (see core_names.h), but
1367          * otherwise leave it to this code block to do the actual work.
1368          */
1369         const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
1370         OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
1371         int rv = 0;
1372         int exists = 0;
1373
1374         if (!OSSL_PARAM_allocate_from_text(&params[0], settable, name, value,
1375                                            strlen(value), &exists)) {
1376             if (!exists) {
1377                 ERR_raise_data(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED,
1378                                "name=%s,value=%s", name, value);
1379                 return -2;
1380             }
1381             return 0;
1382         }
1383         if (EVP_PKEY_CTX_set_params(ctx, params))
1384             rv = 1;
1385         OPENSSL_free(params[0].data);
1386         return rv;
1387     }
1388 }
1389
1390 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
1391                           const char *name, const char *value)
1392 {
1393     if (ctx == NULL) {
1394         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
1395         return -2;
1396     }
1397
1398     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
1399             || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
1400                 && ctx->op.sig.sigprovctx != NULL)
1401             || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
1402                 && ctx->op.ciph.ciphprovctx != NULL)
1403             || (EVP_PKEY_CTX_IS_GEN_OP(ctx)
1404                 && ctx->op.keymgmt.genctx != NULL))
1405         return legacy_ctrl_str_to_param(ctx, name, value);
1406
1407     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
1408         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
1409         return -2;
1410     }
1411     if (strcmp(name, "digest") == 0)
1412         return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
1413                                value);
1414     return ctx->pmeth->ctrl_str(ctx, name, value);
1415 }
1416
1417 /* Utility functions to send a string of hex string to a ctrl */
1418
1419 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
1420 {
1421     size_t len;
1422
1423     len = strlen(str);
1424     if (len > INT_MAX)
1425         return -1;
1426     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
1427 }
1428
1429 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
1430 {
1431     unsigned char *bin;
1432     long binlen;
1433     int rv = -1;
1434
1435     bin = OPENSSL_hexstr2buf(hex, &binlen);
1436     if (bin == NULL)
1437         return 0;
1438     if (binlen <= INT_MAX)
1439         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
1440     OPENSSL_free(bin);
1441     return rv;
1442 }
1443
1444 /* Pass a message digest to a ctrl */
1445 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
1446 {
1447     const EVP_MD *m;
1448
1449     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
1450         EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
1451         return 0;
1452     }
1453     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
1454 }
1455
1456 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
1457 {
1458     return ctx->operation;
1459 }
1460
1461 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
1462 {
1463     ctx->keygen_info = dat;
1464     ctx->keygen_info_count = datlen;
1465 }
1466
1467 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
1468 {
1469     ctx->data = data;
1470 }
1471
1472 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
1473 {
1474     return ctx->data;
1475 }
1476
1477 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
1478 {
1479     return ctx->pkey;
1480 }
1481
1482 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
1483 {
1484     return ctx->peerkey;
1485 }
1486
1487 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
1488 {
1489     ctx->app_data = data;
1490 }
1491
1492 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
1493 {
1494     return ctx->app_data;
1495 }
1496
1497 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1498                             int (*init) (EVP_PKEY_CTX *ctx))
1499 {
1500     pmeth->init = init;
1501 }
1502
1503 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1504                             int (*copy) (EVP_PKEY_CTX *dst,
1505                                          const EVP_PKEY_CTX *src))
1506 {
1507     pmeth->copy = copy;
1508 }
1509
1510 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1511                                void (*cleanup) (EVP_PKEY_CTX *ctx))
1512 {
1513     pmeth->cleanup = cleanup;
1514 }
1515
1516 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1517                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1518                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
1519                                                  EVP_PKEY *pkey))
1520 {
1521     pmeth->paramgen_init = paramgen_init;
1522     pmeth->paramgen = paramgen;
1523 }
1524
1525 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1526                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
1527                               int (*keygen) (EVP_PKEY_CTX *ctx,
1528                                              EVP_PKEY *pkey))
1529 {
1530     pmeth->keygen_init = keygen_init;
1531     pmeth->keygen = keygen;
1532 }
1533
1534 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1535                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1536                             int (*sign) (EVP_PKEY_CTX *ctx,
1537                                          unsigned char *sig, size_t *siglen,
1538                                          const unsigned char *tbs,
1539                                          size_t tbslen))
1540 {
1541     pmeth->sign_init = sign_init;
1542     pmeth->sign = sign;
1543 }
1544
1545 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1546                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1547                               int (*verify) (EVP_PKEY_CTX *ctx,
1548                                              const unsigned char *sig,
1549                                              size_t siglen,
1550                                              const unsigned char *tbs,
1551                                              size_t tbslen))
1552 {
1553     pmeth->verify_init = verify_init;
1554     pmeth->verify = verify;
1555 }
1556
1557 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1558                                       int (*verify_recover_init) (EVP_PKEY_CTX
1559                                                                   *ctx),
1560                                       int (*verify_recover) (EVP_PKEY_CTX
1561                                                              *ctx,
1562                                                              unsigned char
1563                                                              *sig,
1564                                                              size_t *siglen,
1565                                                              const unsigned
1566                                                              char *tbs,
1567                                                              size_t tbslen))
1568 {
1569     pmeth->verify_recover_init = verify_recover_init;
1570     pmeth->verify_recover = verify_recover;
1571 }
1572
1573 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1574                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1575                                                     EVP_MD_CTX *mctx),
1576                                int (*signctx) (EVP_PKEY_CTX *ctx,
1577                                                unsigned char *sig,
1578                                                size_t *siglen,
1579                                                EVP_MD_CTX *mctx))
1580 {
1581     pmeth->signctx_init = signctx_init;
1582     pmeth->signctx = signctx;
1583 }
1584
1585 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1586                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1587                                                         EVP_MD_CTX *mctx),
1588                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1589                                                    const unsigned char *sig,
1590                                                    int siglen,
1591                                                    EVP_MD_CTX *mctx))
1592 {
1593     pmeth->verifyctx_init = verifyctx_init;
1594     pmeth->verifyctx = verifyctx;
1595 }
1596
1597 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1598                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1599                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1600                                                  unsigned char *out,
1601                                                  size_t *outlen,
1602                                                  const unsigned char *in,
1603                                                  size_t inlen))
1604 {
1605     pmeth->encrypt_init = encrypt_init;
1606     pmeth->encrypt = encryptfn;
1607 }
1608
1609 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1610                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1611                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1612                                                unsigned char *out,
1613                                                size_t *outlen,
1614                                                const unsigned char *in,
1615                                                size_t inlen))
1616 {
1617     pmeth->decrypt_init = decrypt_init;
1618     pmeth->decrypt = decrypt;
1619 }
1620
1621 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1622                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1623                               int (*derive) (EVP_PKEY_CTX *ctx,
1624                                              unsigned char *key,
1625                                              size_t *keylen))
1626 {
1627     pmeth->derive_init = derive_init;
1628     pmeth->derive = derive;
1629 }
1630
1631 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1632                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1633                                          void *p2),
1634                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1635                                              const char *type,
1636                                              const char *value))
1637 {
1638     pmeth->ctrl = ctrl;
1639     pmeth->ctrl_str = ctrl_str;
1640 }
1641
1642 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1643     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1644                        const unsigned char *tbs, size_t tbslen))
1645 {
1646     pmeth->digestsign = digestsign;
1647 }
1648
1649 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1650     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1651                          size_t siglen, const unsigned char *tbs,
1652                          size_t tbslen))
1653 {
1654     pmeth->digestverify = digestverify;
1655 }
1656
1657 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1658                              int (*check) (EVP_PKEY *pkey))
1659 {
1660     pmeth->check = check;
1661 }
1662
1663 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1664                                     int (*check) (EVP_PKEY *pkey))
1665 {
1666     pmeth->public_check = check;
1667 }
1668
1669 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1670                                    int (*check) (EVP_PKEY *pkey))
1671 {
1672     pmeth->param_check = check;
1673 }
1674
1675 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1676                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
1677                                                            EVP_MD_CTX *mctx))
1678 {
1679     pmeth->digest_custom = digest_custom;
1680 }
1681
1682 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1683                             int (**pinit) (EVP_PKEY_CTX *ctx))
1684 {
1685     *pinit = pmeth->init;
1686 }
1687
1688 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
1689                             int (**pcopy) (EVP_PKEY_CTX *dst,
1690                                            const EVP_PKEY_CTX *src))
1691 {
1692     *pcopy = pmeth->copy;
1693 }
1694
1695 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
1696                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
1697 {
1698     *pcleanup = pmeth->cleanup;
1699 }
1700
1701 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
1702                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
1703                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
1704                                                    EVP_PKEY *pkey))
1705 {
1706     if (pparamgen_init)
1707         *pparamgen_init = pmeth->paramgen_init;
1708     if (pparamgen)
1709         *pparamgen = pmeth->paramgen;
1710 }
1711
1712 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
1713                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
1714                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
1715                                                EVP_PKEY *pkey))
1716 {
1717     if (pkeygen_init)
1718         *pkeygen_init = pmeth->keygen_init;
1719     if (pkeygen)
1720         *pkeygen = pmeth->keygen;
1721 }
1722
1723 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
1724                             int (**psign_init) (EVP_PKEY_CTX *ctx),
1725                             int (**psign) (EVP_PKEY_CTX *ctx,
1726                                            unsigned char *sig, size_t *siglen,
1727                                            const unsigned char *tbs,
1728                                            size_t tbslen))
1729 {
1730     if (psign_init)
1731         *psign_init = pmeth->sign_init;
1732     if (psign)
1733         *psign = pmeth->sign;
1734 }
1735
1736 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
1737                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
1738                               int (**pverify) (EVP_PKEY_CTX *ctx,
1739                                                const unsigned char *sig,
1740                                                size_t siglen,
1741                                                const unsigned char *tbs,
1742                                                size_t tbslen))
1743 {
1744     if (pverify_init)
1745         *pverify_init = pmeth->verify_init;
1746     if (pverify)
1747         *pverify = pmeth->verify;
1748 }
1749
1750 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
1751                                       int (**pverify_recover_init) (EVP_PKEY_CTX
1752                                                                     *ctx),
1753                                       int (**pverify_recover) (EVP_PKEY_CTX
1754                                                                *ctx,
1755                                                                unsigned char
1756                                                                *sig,
1757                                                                size_t *siglen,
1758                                                                const unsigned
1759                                                                char *tbs,
1760                                                                size_t tbslen))
1761 {
1762     if (pverify_recover_init)
1763         *pverify_recover_init = pmeth->verify_recover_init;
1764     if (pverify_recover)
1765         *pverify_recover = pmeth->verify_recover;
1766 }
1767
1768 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
1769                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
1770                                                       EVP_MD_CTX *mctx),
1771                                int (**psignctx) (EVP_PKEY_CTX *ctx,
1772                                                  unsigned char *sig,
1773                                                  size_t *siglen,
1774                                                  EVP_MD_CTX *mctx))
1775 {
1776     if (psignctx_init)
1777         *psignctx_init = pmeth->signctx_init;
1778     if (psignctx)
1779         *psignctx = pmeth->signctx;
1780 }
1781
1782 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
1783                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
1784                                                           EVP_MD_CTX *mctx),
1785                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
1786                                                      const unsigned char *sig,
1787                                                      int siglen,
1788                                                      EVP_MD_CTX *mctx))
1789 {
1790     if (pverifyctx_init)
1791         *pverifyctx_init = pmeth->verifyctx_init;
1792     if (pverifyctx)
1793         *pverifyctx = pmeth->verifyctx;
1794 }
1795
1796 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
1797                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
1798                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
1799                                                    unsigned char *out,
1800                                                    size_t *outlen,
1801                                                    const unsigned char *in,
1802                                                    size_t inlen))
1803 {
1804     if (pencrypt_init)
1805         *pencrypt_init = pmeth->encrypt_init;
1806     if (pencryptfn)
1807         *pencryptfn = pmeth->encrypt;
1808 }
1809
1810 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
1811                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
1812                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
1813                                                  unsigned char *out,
1814                                                  size_t *outlen,
1815                                                  const unsigned char *in,
1816                                                  size_t inlen))
1817 {
1818     if (pdecrypt_init)
1819         *pdecrypt_init = pmeth->decrypt_init;
1820     if (pdecrypt)
1821         *pdecrypt = pmeth->decrypt;
1822 }
1823
1824 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
1825                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
1826                               int (**pderive) (EVP_PKEY_CTX *ctx,
1827                                                unsigned char *key,
1828                                                size_t *keylen))
1829 {
1830     if (pderive_init)
1831         *pderive_init = pmeth->derive_init;
1832     if (pderive)
1833         *pderive = pmeth->derive;
1834 }
1835
1836 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
1837                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1838                                            void *p2),
1839                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
1840                                                const char *type,
1841                                                const char *value))
1842 {
1843     if (pctrl)
1844         *pctrl = pmeth->ctrl;
1845     if (pctrl_str)
1846         *pctrl_str = pmeth->ctrl_str;
1847 }
1848
1849 void EVP_PKEY_meth_get_digestsign(EVP_PKEY_METHOD *pmeth,
1850     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1851                         const unsigned char *tbs, size_t tbslen))
1852 {
1853     if (digestsign)
1854         *digestsign = pmeth->digestsign;
1855 }
1856
1857 void EVP_PKEY_meth_get_digestverify(EVP_PKEY_METHOD *pmeth,
1858     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1859                           size_t siglen, const unsigned char *tbs,
1860                           size_t tbslen))
1861 {
1862     if (digestverify)
1863         *digestverify = pmeth->digestverify;
1864 }
1865
1866 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
1867                              int (**pcheck) (EVP_PKEY *pkey))
1868 {
1869     if (pcheck != NULL)
1870         *pcheck = pmeth->check;
1871 }
1872
1873 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
1874                                     int (**pcheck) (EVP_PKEY *pkey))
1875 {
1876     if (pcheck != NULL)
1877         *pcheck = pmeth->public_check;
1878 }
1879
1880 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
1881                                    int (**pcheck) (EVP_PKEY *pkey))
1882 {
1883     if (pcheck != NULL)
1884         *pcheck = pmeth->param_check;
1885 }
1886
1887 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
1888                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
1889                                                              EVP_MD_CTX *mctx))
1890 {
1891     if (pdigest_custom != NULL)
1892         *pdigest_custom = pmeth->digest_custom;
1893 }
1894
1895 #endif /* FIPS_MODULE */