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     hmac_pkey_method,
  56 # ifndef OPENSSL_NO_CMAC
  57     cmac_pkey_method,
  58 # endif
  59 # ifndef OPENSSL_NO_RSA
  60     rsa_pss_pkey_method,
  61 # endif
  62 # ifndef OPENSSL_NO_DH
  63     dhx_pkey_method,
  64 # endif
  65 # ifndef OPENSSL_NO_SCRYPT
  66     scrypt_pkey_method,
  67 # endif
  68     tls1_prf_pkey_method,
  69 # ifndef OPENSSL_NO_EC
  70     ecx25519_pkey_method,
  71     ecx448_pkey_method,
  72 # endif
  73     hkdf_pkey_method,
  74 # ifndef OPENSSL_NO_POLY1305
  75     poly1305_pkey_method,
  76 # endif
  77 # ifndef OPENSSL_NO_SIPHASH
  78     siphash_pkey_method,
  79 # endif
  80 # ifndef OPENSSL_NO_EC
  81     ed25519_pkey_method,
  82     ed448_pkey_method,
  83 # endif
  84 # ifndef OPENSSL_NO_SM2
  85     sm2_pkey_method,
  86 # endif
  87 };
  88
  89 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  90
  91 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
  92 {
  93     return ((*a)->pkey_id - ((**b)())->pkey_id);
  94 }
  95
  96 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  97
  98 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  99                      const EVP_PKEY_METHOD *const *b)
 100 {
 101     return ((*a)->pkey_id - (*b)->pkey_id);
 102 }
 103
 104 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
 105 {
 106     pmeth_fn *ret;
 107     EVP_PKEY_METHOD tmp;
 108     const EVP_PKEY_METHOD *t = &tmp;
 109
 110     tmp.pkey_id = type;
 111     if (app_pkey_methods) {
 112         int idx;
 113         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
 114         if (idx >= 0)
 115             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 116     }
 117     ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
 118                                  sizeof(standard_methods) /
 119                                  sizeof(pmeth_fn));
 120     if (ret == NULL || *ret == NULL)
 121         return NULL;
 122     return (**ret)();
 123 }
 124
 125 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 126 {
 127     EVP_PKEY_METHOD *pmeth;
 128
 129     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 130     if (pmeth == NULL) {
 131         EVPerr(EVP_F_EVP_PKEY_METH_NEW, ERR_R_MALLOC_FAILURE);
 132         return NULL;
 133     }
 134
 135     pmeth->pkey_id = id;
 136     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 137     return pmeth;
 138 }
 139 #endif /* FIPS_MODULE */
 140
 141 static int is_legacy_alg(int id, const char *keytype)
 142 {
 143 #ifndef FIPS_MODULE
 144     /* Certain EVP_PKEY keytypes are only available in legacy form */
 145     if (id == -1) {
 146         id = OBJ_sn2nid(keytype);
 147         if (id == NID_undef)
 148             id = OBJ_ln2nid(keytype);
 149         if (id == NID_undef)
 150             return  0;
 151     }
 152     switch (id) {
 153     /*
 154      * TODO(3.0): Remove SM2 and DHX when they are converted to have provider
 155      * support
 156      */
 157     case EVP_PKEY_SM2:
 158     case EVP_PKEY_DHX:
 159     case EVP_PKEY_SCRYPT:
 160     case EVP_PKEY_HKDF:
 161     case EVP_PKEY_CMAC:
 162     case EVP_PKEY_HMAC:
 163     case EVP_PKEY_SIPHASH:
 164     case EVP_PKEY_POLY1305:
 165         return 1;
 166     default:
 167         return 0;
 168     }
 169 #else
 170     return 0;
 171 #endif
 172 }
 173
 174 static EVP_PKEY_CTX *int_ctx_new(OPENSSL_CTX *libctx,
 175                                  EVP_PKEY *pkey, ENGINE *e,
 176                                  const char *keytype, const char *propquery,
 177                                  int id)
 178
 179 {
 180     EVP_PKEY_CTX *ret;
 181     const EVP_PKEY_METHOD *pmeth = NULL;
 182     EVP_KEYMGMT *keymgmt = NULL;
 183
 184     /*
 185      * When using providers, the context is bound to the algo implementation
 186      * later.
 187      */
 188     if (pkey == NULL && e == NULL && id == -1)
 189         goto common;
 190
 191     /*
 192      * If the internal key is provided, we extract the keytype from its
 193      * keymgmt and skip over the legacy code.
 194      */
 195     if (pkey != NULL && evp_pkey_is_provided(pkey)) {
 196         /* If we have an engine, something went wrong somewhere... */
 197         if (!ossl_assert(e == NULL))
 198             return NULL;
 199         keytype = evp_first_name(pkey->keymgmt->prov, pkey->keymgmt->name_id);
 200         goto common;
 201     }
 202 #ifndef FIPS_MODULE
 203     /* TODO(3.0) Legacy code should be removed when all is provider based */
 204     /* BEGIN legacy */
 205     if (id == -1) {
 206         if (pkey == NULL)
 207             return NULL;
 208         id = pkey->type;
 209     }
 210
 211     /*
 212      * Here, we extract what information we can for the purpose of
 213      * supporting usage with implementations from providers, to make
 214      * for a smooth transition from legacy stuff to provider based stuff.
 215      *
 216      * If an engine is given, this is entirely legacy, and we should not
 217      * pretend anything else, so we only set the name when no engine is
 218      * given.  If both are already given, someone made a mistake, and
 219      * since that can only happen internally, it's safe to make an
 220      * assertion.
 221      */
 222     if (!ossl_assert(e == NULL || keytype == NULL))
 223         return NULL;
 224     if (e == NULL)
 225         keytype = OBJ_nid2sn(id);
 226
 227 # ifndef OPENSSL_NO_ENGINE
 228     if (e == NULL && pkey != NULL)
 229         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 230     /* Try to find an ENGINE which implements this method */
 231     if (e) {
 232         if (!ENGINE_init(e)) {
 233             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
 234             return NULL;
 235         }
 236     } else {
 237         e = ENGINE_get_pkey_meth_engine(id);
 238     }
 239
 240     /*
 241      * If an ENGINE handled this method look it up. Otherwise use internal
 242      * tables.
 243      */
 244     if (e != NULL) {
 245         pmeth = ENGINE_get_pkey_meth(e, id);
 246     else
 247 # endif
 248         pmeth = EVP_PKEY_meth_find(id);
 249
 250     if (pmeth == NULL) {
 251 # ifndef OPENSSL_NO_ENGINE
 252         ENGINE_finish(e);
 253 # endif
 254         EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
 255         return NULL;
 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         int legacy = is_legacy_alg(id, keytype);
 266
 267         if (legacy) {
 268             /* This could fail so ignore errors */
 269             ERR_set_mark();
 270         }
 271
 272         keymgmt = EVP_KEYMGMT_fetch(libctx, keytype, propquery);
 273         if (legacy) {
 274             ERR_pop_to_mark();
 275         } else if (keymgmt == NULL) {
 276             EVPerr(EVP_F_INT_CTX_NEW, EVP_R_FETCH_FAILED);
 277             return NULL;
 278         }
 279     }
 280
 281     ret = OPENSSL_zalloc(sizeof(*ret));
 282     if (ret == NULL) {
 283         EVP_KEYMGMT_free(keymgmt);
 284 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 285         ENGINE_finish(e);
 286 #endif
 287         EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
 288         return NULL;
 289     }
 290     ret->libctx = libctx;
 291     ret->propquery = propquery;
 292     ret->keytype = keytype;
 293     ret->keymgmt = keymgmt;
 294     ret->engine = e;
 295     ret->pmeth = pmeth;
 296     ret->operation = EVP_PKEY_OP_UNDEFINED;
 297     ret->pkey = pkey;
 298     if (pkey != NULL)
 299         EVP_PKEY_up_ref(pkey);
 300
 301     if (pmeth != NULL && pmeth->init != NULL) {
 302         if (pmeth->init(ret) <= 0) {
 303             ret->pmeth = NULL;
 304             EVP_PKEY_CTX_free(ret);
 305             return NULL;
 306         }
 307     }
 308
 309     return ret;
 310 }
 311
 312 /*- All methods below can also be used in FIPS_MODULE */
 313
 314 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OPENSSL_CTX *libctx,
 315                                          const char *name,
 316                                          const char *propquery)
 317 {
 318     return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
 319 }
 320
 321 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OPENSSL_CTX *libctx, EVP_PKEY *pkey,
 322                                          const char *propquery)
 323 {
 324     return int_ctx_new(libctx, pkey, NULL, NULL, propquery, -1);
 325 }
 326
 327 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
 328 {
 329     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 330         if (ctx->op.sig.sigprovctx != NULL && ctx->op.sig.signature != NULL)
 331             ctx->op.sig.signature->freectx(ctx->op.sig.sigprovctx);
 332         EVP_SIGNATURE_free(ctx->op.sig.signature);
 333         ctx->op.sig.sigprovctx = NULL;
 334         ctx->op.sig.signature = NULL;
 335     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 336         if (ctx->op.kex.exchprovctx != NULL && ctx->op.kex.exchange != NULL)
 337             ctx->op.kex.exchange->freectx(ctx->op.kex.exchprovctx);
 338         EVP_KEYEXCH_free(ctx->op.kex.exchange);
 339         ctx->op.kex.exchprovctx = NULL;
 340         ctx->op.kex.exchange = NULL;
 341     }
 342 /* TODO(3.0): add dependancies and uncomment this when available for fips mode */
 343 #ifndef FIPS_MODULE
 344     else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
 345         if (ctx->op.ciph.ciphprovctx != NULL && ctx->op.ciph.cipher != NULL)
 346             ctx->op.ciph.cipher->freectx(ctx->op.ciph.ciphprovctx);
 347         EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
 348         ctx->op.ciph.ciphprovctx = NULL;
 349         ctx->op.ciph.cipher = NULL;
 350     } else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
 351         if (ctx->op.keymgmt.genctx != NULL && ctx->keymgmt != NULL)
 352             evp_keymgmt_gen_cleanup(ctx->keymgmt, ctx->op.keymgmt.genctx);
 353     }
 354 #endif
 355 }
 356
 357 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 358 {
 359     if (ctx == NULL)
 360         return;
 361     if (ctx->pmeth && ctx->pmeth->cleanup)
 362         ctx->pmeth->cleanup(ctx);
 363
 364     evp_pkey_ctx_free_old_ops(ctx);
 365     EVP_KEYMGMT_free(ctx->keymgmt);
 366
 367     EVP_PKEY_free(ctx->pkey);
 368     EVP_PKEY_free(ctx->peerkey);
 369 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODULE)
 370     ENGINE_finish(ctx->engine);
 371 #endif
 372     OPENSSL_free(ctx);
 373 }
 374
 375 #ifndef FIPS_MODULE
 376
 377 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 378                              const EVP_PKEY_METHOD *meth)
 379 {
 380     if (ppkey_id)
 381         *ppkey_id = meth->pkey_id;
 382     if (pflags)
 383         *pflags = meth->flags;
 384 }
 385
 386 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 387 {
 388     int pkey_id = dst->pkey_id;
 389     int flags = dst->flags;
 390
 391     *dst = *src;
 392
 393     /* We only copy the function pointers so restore the other values */
 394     dst->pkey_id = pkey_id;
 395     dst->flags = flags;
 396 }
 397
 398 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 399 {
 400     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 401         OPENSSL_free(pmeth);
 402 }
 403
 404 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 405 {
 406     return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
 407 }
 408
 409 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 410 {
 411     return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
 412 }
 413
 414 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 415 {
 416     EVP_PKEY_CTX *rctx;
 417
 418     if (((pctx->pmeth == NULL) || (pctx->pmeth->copy == NULL))
 419             && ((EVP_PKEY_CTX_IS_DERIVE_OP(pctx)
 420                  && pctx->op.kex.exchprovctx == NULL)
 421                 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)
 422                     && pctx->op.sig.sigprovctx == NULL)))
 423         return NULL;
 424 # ifndef OPENSSL_NO_ENGINE
 425     /* Make sure it's safe to copy a pkey context using an ENGINE */
 426     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 427         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
 428         return 0;
 429     }
 430 # endif
 431     rctx = OPENSSL_zalloc(sizeof(*rctx));
 432     if (rctx == NULL) {
 433         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_MALLOC_FAILURE);
 434         return NULL;
 435     }
 436
 437     if (pctx->pkey != NULL)
 438         EVP_PKEY_up_ref(pctx->pkey);
 439     rctx->pkey = pctx->pkey;
 440     rctx->operation = pctx->operation;
 441     rctx->libctx = pctx->libctx;
 442     rctx->keytype = pctx->keytype;
 443     rctx->propquery = pctx->propquery;
 444
 445     if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
 446         if (pctx->op.kex.exchange != NULL) {
 447             rctx->op.kex.exchange = pctx->op.kex.exchange;
 448             if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange)) {
 449                 OPENSSL_free(rctx);
 450                 return NULL;
 451             }
 452         }
 453         if (pctx->op.kex.exchprovctx != NULL) {
 454             if (!ossl_assert(pctx->op.kex.exchange != NULL))
 455                 return NULL;
 456             rctx->op.kex.exchprovctx
 457                 = pctx->op.kex.exchange->dupctx(pctx->op.kex.exchprovctx);
 458             if (rctx->op.kex.exchprovctx == NULL) {
 459                 EVP_KEYEXCH_free(rctx->op.kex.exchange);
 460                 OPENSSL_free(rctx);
 461                 return NULL;
 462             }
 463             return rctx;
 464         }
 465     } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
 466         if (pctx->op.sig.signature != NULL) {
 467             rctx->op.sig.signature = pctx->op.sig.signature;
 468             if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature)) {
 469                 OPENSSL_free(rctx);
 470                 return NULL;
 471             }
 472         }
 473         if (pctx->op.sig.sigprovctx != NULL) {
 474             if (!ossl_assert(pctx->op.sig.signature != NULL))
 475                 return NULL;
 476             rctx->op.sig.sigprovctx
 477                 = pctx->op.sig.signature->dupctx(pctx->op.sig.sigprovctx);
 478             if (rctx->op.sig.sigprovctx == NULL) {
 479                 EVP_SIGNATURE_free(rctx->op.sig.signature);
 480                 OPENSSL_free(rctx);
 481                 return NULL;
 482             }
 483             return rctx;
 484         }
 485     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
 486         if (pctx->op.ciph.cipher != NULL) {
 487             rctx->op.ciph.cipher = pctx->op.ciph.cipher;
 488             if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher)) {
 489                 OPENSSL_free(rctx);
 490                 return NULL;
 491             }
 492         }
 493         if (pctx->op.ciph.ciphprovctx != NULL) {
 494             if (!ossl_assert(pctx->op.ciph.cipher != NULL))
 495                 return NULL;
 496             rctx->op.ciph.ciphprovctx
 497                 = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.ciphprovctx);
 498             if (rctx->op.ciph.ciphprovctx == NULL) {
 499                 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
 500                 OPENSSL_free(rctx);
 501                 return NULL;
 502             }
 503             return rctx;
 504         }
 505     }
 506
 507     rctx->pmeth = pctx->pmeth;
 508 # ifndef OPENSSL_NO_ENGINE
 509     rctx->engine = pctx->engine;
 510 # endif
 511
 512     if (pctx->peerkey)
 513         EVP_PKEY_up_ref(pctx->peerkey);
 514     rctx->peerkey = pctx->peerkey;
 515
 516     if (pctx->pmeth->copy(rctx, pctx) > 0)
 517         return rctx;
 518
 519     rctx->pmeth = NULL;
 520     EVP_PKEY_CTX_free(rctx);
 521     return NULL;
 522
 523 }
 524
 525 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 526 {
 527     if (app_pkey_methods == NULL) {
 528         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 529         if (app_pkey_methods == NULL){
 530             EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 531             return 0;
 532         }
 533     }
 534     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 535         EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 536         return 0;
 537     }
 538     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 539     return 1;
 540 }
 541
 542 void evp_app_cleanup_int(void)
 543 {
 544     if (app_pkey_methods != NULL)
 545         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 546 }
 547
 548 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 549 {
 550     const EVP_PKEY_METHOD *ret;
 551
 552     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 553
 554     return ret == NULL ? 0 : 1;
 555 }
 556
 557 size_t EVP_PKEY_meth_get_count(void)
 558 {
 559     size_t rv = OSSL_NELEM(standard_methods);
 560
 561     if (app_pkey_methods)
 562         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 563     return rv;
 564 }
 565
 566 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 567 {
 568     if (idx < OSSL_NELEM(standard_methods))
 569         return (standard_methods[idx])();
 570     if (app_pkey_methods == NULL)
 571         return NULL;
 572     idx -= OSSL_NELEM(standard_methods);
 573     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 574         return NULL;
 575     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 576 }
 577 #endif
 578
 579 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 580 {
 581     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 582             && ctx->op.kex.exchprovctx != NULL
 583             && ctx->op.kex.exchange != NULL
 584             && ctx->op.kex.exchange->set_ctx_params != NULL)
 585         return ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.exchprovctx,
 586                                                     params);
 587     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 588             && ctx->op.sig.sigprovctx != NULL
 589             && ctx->op.sig.signature != NULL
 590             && ctx->op.sig.signature->set_ctx_params != NULL)
 591         return ctx->op.sig.signature->set_ctx_params(ctx->op.sig.sigprovctx,
 592                                                      params);
 593     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 594             && ctx->op.ciph.ciphprovctx != NULL
 595             && ctx->op.ciph.cipher != NULL
 596             && ctx->op.ciph.cipher->set_ctx_params != NULL)
 597         return ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.ciphprovctx,
 598                                                      params);
 599     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 600         && ctx->op.keymgmt.genctx != NULL
 601         && ctx->keymgmt != NULL
 602         && ctx->keymgmt->gen_set_params != NULL)
 603         return evp_keymgmt_gen_set_params(ctx->keymgmt, ctx->op.keymgmt.genctx,
 604                                           params);
 605     return 0;
 606 }
 607
 608 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 609 {
 610     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 611             && ctx->op.kex.exchprovctx != NULL
 612             && ctx->op.kex.exchange != NULL
 613             && ctx->op.kex.exchange->get_ctx_params != NULL)
 614         return ctx->op.kex.exchange->get_ctx_params(ctx->op.kex.exchprovctx,
 615                                                     params);
 616     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 617             && ctx->op.sig.sigprovctx != NULL
 618             && ctx->op.sig.signature != NULL
 619             && ctx->op.sig.signature->get_ctx_params != NULL)
 620         return ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx,
 621                                                      params);
 622     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 623             && ctx->op.ciph.ciphprovctx != NULL
 624             && ctx->op.ciph.cipher != NULL
 625             && ctx->op.ciph.cipher->get_ctx_params != NULL)
 626         return ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.ciphprovctx,
 627                                                    params);
 628     return 0;
 629 }
 630
 631 #ifndef FIPS_MODULE
 632 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx)
 633 {
 634     void *provctx;
 635
 636     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 637             && ctx->op.kex.exchange != NULL
 638             && ctx->op.kex.exchange->gettable_ctx_params != NULL) {
 639         provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
 640         return ctx->op.kex.exchange->gettable_ctx_params(provctx);
 641     }
 642     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 643             && ctx->op.sig.signature != NULL
 644             && ctx->op.sig.signature->gettable_ctx_params != NULL) {
 645         provctx = ossl_provider_ctx(
 646                       EVP_SIGNATURE_provider(ctx->op.sig.signature));
 647         return ctx->op.sig.signature->gettable_ctx_params(provctx);
 648     }
 649     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 650             && ctx->op.ciph.cipher != NULL
 651             && ctx->op.ciph.cipher->gettable_ctx_params != NULL) {
 652         provctx = ossl_provider_ctx(
 653                       EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
 654         return ctx->op.ciph.cipher->gettable_ctx_params(provctx);
 655     }
 656     return NULL;
 657 }
 658
 659 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx)
 660 {
 661     void *provctx;
 662
 663     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 664             && ctx->op.kex.exchange != NULL
 665             && ctx->op.kex.exchange->settable_ctx_params != NULL) {
 666         provctx = ossl_provider_ctx(EVP_KEYEXCH_provider(ctx->op.kex.exchange));
 667         return ctx->op.kex.exchange->settable_ctx_params(provctx);
 668     }
 669     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 670             && ctx->op.sig.signature != NULL
 671             && ctx->op.sig.signature->settable_ctx_params != NULL) {
 672         provctx = ossl_provider_ctx(
 673                       EVP_SIGNATURE_provider(ctx->op.sig.signature));
 674         return ctx->op.sig.signature->settable_ctx_params(provctx);
 675     }
 676     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 677             && ctx->op.ciph.cipher != NULL
 678             && ctx->op.ciph.cipher->settable_ctx_params != NULL) {
 679         provctx = ossl_provider_ctx(
 680                       EVP_ASYM_CIPHER_provider(ctx->op.ciph.cipher));
 681         return ctx->op.ciph.cipher->settable_ctx_params(provctx);
 682     }
 683     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 684             && ctx->keymgmt != NULL)
 685         return evp_keymgmt_gen_settable_params(ctx->keymgmt);
 686
 687     return NULL;
 688 }
 689
 690 /*
 691  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
 692  *
 693  * Return 1 on success, 0 or negative for errors.
 694  *
 695  * In particular they return -2 if any of the params is not supported.
 696  *
 697  * They are not available in FIPS_MODULE as they depend on
 698  *      - EVP_PKEY_CTX_{get,set}_params()
 699  *      - EVP_PKEY_CTX_{gettable,settable}_params()
 700  *
 701  */
 702 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 703 {
 704     const OSSL_PARAM *p;
 705
 706     if (ctx == NULL || params == NULL)
 707         return 0;
 708
 709     for (p = params; p->key != NULL; p++) {
 710         /* Check the ctx actually understands this parameter */
 711         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_settable_params(ctx),
 712                                     p->key) == NULL )
 713             return -2;
 714     }
 715
 716     return EVP_PKEY_CTX_set_params(ctx, params);
 717 }
 718
 719 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 720 {
 721     const OSSL_PARAM *p;
 722
 723     if (ctx == NULL || params == NULL)
 724         return 0;
 725
 726     for (p = params; p->key != NULL; p++ ) {
 727         /* Check the ctx actually understands this parameter */
 728         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_gettable_params(ctx),
 729                                     p->key) == NULL )
 730             return -2;
 731     }
 732
 733     return EVP_PKEY_CTX_get_params(ctx, params);
 734 }
 735
 736 # ifndef OPENSSL_NO_DH
 737 int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad)
 738 {
 739     OSSL_PARAM dh_pad_params[2];
 740     unsigned int upad = pad;
 741
 742     /* We use EVP_PKEY_CTX_ctrl return values */
 743     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 744         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 745         return -2;
 746     }
 747
 748     /* TODO(3.0): Remove this eventually when no more legacy */
 749     if (ctx->op.kex.exchprovctx == NULL)
 750         return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_DERIVE,
 751                                  EVP_PKEY_CTRL_DH_PAD, pad, NULL);
 752
 753     dh_pad_params[0] = OSSL_PARAM_construct_uint(OSSL_EXCHANGE_PARAM_PAD, &upad);
 754     dh_pad_params[1] = OSSL_PARAM_construct_end();
 755
 756     return EVP_PKEY_CTX_set_params(ctx, dh_pad_params);
 757 }
 758 # endif
 759
 760 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
 761 {
 762     OSSL_PARAM sig_md_params[2], *p = sig_md_params;
 763     /* 80 should be big enough */
 764     char name[80] = "";
 765     const EVP_MD *tmp;
 766
 767     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 768         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 769         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 770         return -2;
 771     }
 772
 773     /* TODO(3.0): Remove this eventually when no more legacy */
 774     if (ctx->op.sig.sigprovctx == NULL)
 775         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 776                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
 777
 778     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 779                                             name,
 780                                             sizeof(name));
 781     *p = OSSL_PARAM_construct_end();
 782
 783     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
 784         return 0;
 785
 786     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
 787     if (tmp == NULL)
 788         return 0;
 789
 790     *md = tmp;
 791
 792     return 1;
 793 }
 794
 795 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 796 {
 797     OSSL_PARAM sig_md_params[2], *p = sig_md_params;
 798     const char *name;
 799
 800     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 801         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 802         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 803         return -2;
 804     }
 805
 806     /* TODO(3.0): Remove this eventually when no more legacy */
 807     if (ctx->op.sig.sigprovctx == NULL)
 808         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 809                                  EVP_PKEY_CTRL_MD, 0, (void *)(md));
 810
 811     if (md == NULL) {
 812         name = "";
 813     } else {
 814         name = EVP_MD_name(md);
 815     }
 816
 817     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 818                                             /*
 819                                              * Cast away the const. This is read
 820                                              * only so should be safe
 821                                              */
 822                                             (char *)name, 0);
 823     *p = OSSL_PARAM_construct_end();
 824
 825     return EVP_PKEY_CTX_set_params(ctx, sig_md_params);
 826 }
 827
 828 int EVP_PKEY_CTX_set_tls1_prf_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 829 {
 830     OSSL_PARAM tls1_prf_md_params[2], *p = tls1_prf_md_params;
 831     const char *name;
 832
 833     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 834         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 835         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 836         return -2;
 837     }
 838
 839     /* TODO(3.0): Remove this eventually when no more legacy */
 840     if (ctx->op.kex.exchprovctx == NULL)
 841         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_DERIVE,
 842                                  EVP_PKEY_CTRL_TLS_MD, 0, (void *)(md));
 843
 844     if (md == NULL) {
 845         name = "";
 846     } else {
 847         name = EVP_MD_name(md);
 848     }
 849
 850     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_KDF_PARAM_DIGEST,
 851                                             /*
 852                                              * Cast away the const. This is read
 853                                              * only so should be safe
 854                                              */
 855                                             (char *)name, 0);
 856     *p++ = OSSL_PARAM_construct_end();
 857
 858     return EVP_PKEY_CTX_set_params(ctx, tls1_prf_md_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     OSSL_PARAM tls1_prf_secret_params[2], *p = tls1_prf_secret_params;
 865
 866     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 867         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 868         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 869         return -2;
 870     }
 871
 872     /* TODO(3.0): Remove this eventually when no more legacy */
 873     if (ctx->op.kex.exchprovctx == NULL)
 874         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_DERIVE,
 875                                  EVP_PKEY_CTRL_TLS_SECRET, seclen,
 876                                  (void *)(sec));
 877
 878
 879     if (seclen < 0) {
 880         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_SECRET_LENGTH);
 881         return 0;
 882     }
 883
 884     *p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_SECRET,
 885                                             /*
 886                                              * Cast away the const. This is read
 887                                              * only so should be safe
 888                                              */
 889                                             (unsigned char *)sec,
 890                                             (size_t)seclen);
 891     *p++ = OSSL_PARAM_construct_end();
 892
 893     return EVP_PKEY_CTX_set_params(ctx, tls1_prf_secret_params);
 894 }
 895
 896 int EVP_PKEY_CTX_add1_tls1_prf_seed(EVP_PKEY_CTX *ctx,
 897                                     const unsigned char *seed, int seedlen)
 898 {
 899     OSSL_PARAM tls1_prf_seed_params[2], *p = tls1_prf_seed_params;
 900
 901     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 902         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 903         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 904         return -2;
 905     }
 906
 907     /* TODO(3.0): Remove this eventually when no more legacy */
 908     if (ctx->op.kex.exchprovctx == NULL)
 909         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_DERIVE,
 910                                  EVP_PKEY_CTRL_TLS_SEED, seedlen,
 911                                  (void *)(seed));
 912
 913     if (seedlen < 0) {
 914         ERR_raise(ERR_LIB_EVP, EVP_R_INVALID_SEED_LENGTH);
 915         return 0;
 916     }
 917
 918     *p++ = OSSL_PARAM_construct_octet_string(OSSL_KDF_PARAM_SEED,
 919                                             /*
 920                                              * Cast away the const. This is read
 921                                              * only so should be safe
 922                                              */
 923                                             (unsigned char *)seed,
 924                                             (size_t)seedlen);
 925     *p++ = OSSL_PARAM_construct_end();
 926
 927     return EVP_PKEY_CTX_set_params(ctx, tls1_prf_seed_params);
 928 }
 929
 930 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
 931                                 int cmd, int p1, void *p2)
 932 {
 933     /*
 934      * GOST CMS format is different for different cipher algorithms.
 935      * Most of other algorithms don't have such a difference
 936      * so this ctrl is just ignored.
 937      */
 938     if (cmd == EVP_PKEY_CTRL_CIPHER)
 939         return -2;
 940
 941 # ifndef OPENSSL_NO_DH
 942     if (keytype == EVP_PKEY_DH) {
 943         switch (cmd) {
 944             case EVP_PKEY_CTRL_DH_PAD:
 945                 return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
 946             case EVP_PKEY_CTRL_DH_PARAMGEN_PRIME_LEN:
 947                 return EVP_PKEY_CTX_set_dh_paramgen_prime_len(ctx, p1);
 948             case EVP_PKEY_CTRL_DH_PARAMGEN_SUBPRIME_LEN:
 949                 return EVP_PKEY_CTX_set_dh_paramgen_subprime_len(ctx, p1);
 950             case EVP_PKEY_CTRL_DH_PARAMGEN_GENERATOR:
 951                 return EVP_PKEY_CTX_set_dh_paramgen_generator(ctx, p1);
 952             case EVP_PKEY_CTRL_DH_PARAMGEN_TYPE:
 953                 return EVP_PKEY_CTX_set_dh_paramgen_type(ctx, p1);
 954             case EVP_PKEY_CTRL_DH_RFC5114:
 955                 return EVP_PKEY_CTX_set_dh_rfc5114(ctx, p1);
 956         }
 957     }
 958 # endif
 959 # ifndef OPENSSL_NO_DSA
 960     if (keytype == EVP_PKEY_DSA) {
 961         switch (cmd) {
 962         case EVP_PKEY_CTRL_DSA_PARAMGEN_BITS:
 963             return EVP_PKEY_CTX_set_dsa_paramgen_bits(ctx, p1);
 964         case EVP_PKEY_CTRL_DSA_PARAMGEN_Q_BITS:
 965             return EVP_PKEY_CTX_set_dsa_paramgen_q_bits(ctx, p1);
 966         case EVP_PKEY_CTRL_DSA_PARAMGEN_MD:
 967             return EVP_PKEY_CTX_set_dsa_paramgen_md(ctx, p2);
 968         }
 969     }
 970 # endif
 971 # ifndef OPENSSL_NO_EC
 972     if (keytype == EVP_PKEY_EC) {
 973         switch (cmd) {
 974         case EVP_PKEY_CTRL_EC_PARAMGEN_CURVE_NID:
 975             return EVP_PKEY_CTX_set_ec_paramgen_curve_nid(ctx, p1);
 976         case EVP_PKEY_CTRL_EC_ECDH_COFACTOR:
 977             if (p1 == -2) {
 978                 return EVP_PKEY_CTX_get_ecdh_cofactor_mode(ctx);
 979             } else if (p1 < -1 || p1 > 1) {
 980                 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 981                 return -2;
 982             } else {
 983                 return EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, p1);
 984             }
 985         case EVP_PKEY_CTRL_EC_KDF_TYPE:
 986             if (p1 == -2) {
 987                 return EVP_PKEY_CTX_get_ecdh_kdf_type(ctx);
 988             } else {
 989                 return EVP_PKEY_CTX_set_ecdh_kdf_type(ctx, p1);
 990             }
 991         case EVP_PKEY_CTRL_GET_EC_KDF_MD:
 992             return EVP_PKEY_CTX_get_ecdh_kdf_md(ctx, p2);
 993         case EVP_PKEY_CTRL_EC_KDF_MD:
 994             return EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, p2);
 995         case EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN:
 996             return EVP_PKEY_CTX_get_ecdh_kdf_outlen(ctx, p2);
 997         case EVP_PKEY_CTRL_EC_KDF_OUTLEN:
 998             return EVP_PKEY_CTX_set_ecdh_kdf_outlen(ctx, p1);
 999         case EVP_PKEY_CTRL_GET_EC_KDF_UKM:
1000             return EVP_PKEY_CTX_get0_ecdh_kdf_ukm(ctx, p2);
1001         case EVP_PKEY_CTRL_EC_KDF_UKM:
1002             return EVP_PKEY_CTX_set0_ecdh_kdf_ukm(ctx, p2, p1);
1003         }
1004     }
1005 # endif
1006     if (keytype == EVP_PKEY_RSA) {
1007         switch (cmd) {
1008         case EVP_PKEY_CTRL_RSA_OAEP_MD:
1009             return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
1010         case EVP_PKEY_CTRL_GET_RSA_OAEP_MD:
1011             return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
1012         case EVP_PKEY_CTRL_RSA_MGF1_MD:
1013             return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
1014         case EVP_PKEY_CTRL_RSA_OAEP_LABEL:
1015             return EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, p2, p1);
1016         case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL:
1017             return EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, (unsigned char **)p2);
1018         case EVP_PKEY_CTRL_RSA_KEYGEN_BITS:
1019             return EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, p1);
1020         case EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP:
1021             return EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, p2);
1022         case EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES:
1023             return EVP_PKEY_CTX_set_rsa_keygen_primes(ctx, p1);
1024         }
1025     }
1026     /*
1027      * keytype == -1 is used when several key types share the same structure,
1028      * or for generic controls that are the same across multiple key types.
1029      */
1030     if (keytype == -1) {
1031         if (optype == EVP_PKEY_OP_DERIVE) {
1032             switch (cmd) {
1033             case EVP_PKEY_CTRL_TLS_MD:
1034                 return EVP_PKEY_CTX_set_tls1_prf_md(ctx, p2);
1035             case EVP_PKEY_CTRL_TLS_SECRET:
1036                 return EVP_PKEY_CTX_set1_tls1_prf_secret(ctx, p2, p1);
1037             case EVP_PKEY_CTRL_TLS_SEED:
1038                 return EVP_PKEY_CTX_add1_tls1_prf_seed(ctx, p2, p1);
1039             }
1040         }
1041         switch (cmd) {
1042         case EVP_PKEY_CTRL_MD:
1043             return EVP_PKEY_CTX_set_signature_md(ctx, p2);
1044         case EVP_PKEY_CTRL_GET_MD:
1045             return EVP_PKEY_CTX_get_signature_md(ctx, p2);
1046         case EVP_PKEY_CTRL_RSA_PADDING:
1047             return EVP_PKEY_CTX_set_rsa_padding(ctx, p1);
1048         case EVP_PKEY_CTRL_GET_RSA_PADDING:
1049             return EVP_PKEY_CTX_get_rsa_padding(ctx, p2);
1050         case EVP_PKEY_CTRL_GET_RSA_MGF1_MD:
1051             return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
1052         case EVP_PKEY_CTRL_RSA_PSS_SALTLEN:
1053             return EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, p1);
1054         case EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN:
1055             return EVP_PKEY_CTX_get_rsa_pss_saltlen(ctx, p2);
1056         case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
1057         case EVP_PKEY_CTRL_PKCS7_DECRYPT:
1058 # ifndef OPENSSL_NO_CMS
1059         case EVP_PKEY_CTRL_CMS_DECRYPT:
1060         case EVP_PKEY_CTRL_CMS_ENCRYPT:
1061 # endif
1062             /* TODO (3.0) Temporary hack, this should probe */
1063             if (!EVP_PKEY_is_a(EVP_PKEY_CTX_get0_pkey(ctx), "RSASSA-PSS"))
1064                 return 1;
1065             ERR_raise(ERR_LIB_EVP,
1066                       EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
1067             return -2;
1068         }
1069     }
1070     return 0;
1071 }
1072
1073 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
1074                       int cmd, int p1, void *p2)
1075 {
1076     int ret;
1077
1078     if (ctx == NULL) {
1079         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
1080         return -2;
1081     }
1082
1083     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
1084             || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
1085                 && ctx->op.sig.sigprovctx != NULL)
1086             || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
1087                 && ctx->op.ciph.ciphprovctx != NULL)
1088             || (EVP_PKEY_CTX_IS_GEN_OP(ctx)
1089                 && ctx->op.keymgmt.genctx != NULL))
1090         return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
1091
1092     if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
1093         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
1094         return -2;
1095     }
1096     if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
1097         return -1;
1098
1099     /* Skip the operation checks since this is called in a very early stage */
1100     if (ctx->pmeth->digest_custom != NULL)
1101         goto doit;
1102
1103     if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
1104         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
1105         return -1;
1106     }
1107
1108     if ((optype != -1) && !(ctx->operation & optype)) {
1109         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
1110         return -1;
1111     }
1112
1113  doit:
1114     ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
1115
1116     if (ret == -2)
1117         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
1118
1119     return ret;
1120 }
1121
1122 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
1123                              int cmd, uint64_t value)
1124 {
1125     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
1126 }
1127
1128 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
1129                                     const char *value)
1130 {
1131
1132     /* Special cases that we intercept */
1133 # ifndef OPENSSL_NO_EC
1134     /*
1135      * We don't support encoding settings for providers, i.e. the only
1136      * possible encoding is "named_curve", so we simply fail when something
1137      * else is given, and otherwise just pretend all is fine.
1138      */
1139     if (strcmp(name, "ec_param_enc") == 0) {
1140         if (strcmp(value, "named_curve") == 0) {
1141             return 1;
1142         } else {
1143             ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1144             return -2;
1145         }
1146     }
1147 # endif
1148
1149     if (strcmp(name, "md") == 0)
1150         name = OSSL_ALG_PARAM_DIGEST;
1151     else if (strcmp(name, "rsa_padding_mode") == 0)
1152         name = OSSL_ASYM_CIPHER_PARAM_PAD_MODE;
1153     else if (strcmp(name, "rsa_mgf1_md") == 0)
1154         name = OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST;
1155     else if (strcmp(name, "rsa_oaep_md") == 0)
1156         name = OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST;
1157     else if (strcmp(name, "rsa_oaep_label") == 0)
1158         name = OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL;
1159     else if (strcmp(name, "rsa_pss_saltlen") == 0)
1160         name = OSSL_SIGNATURE_PARAM_PSS_SALTLEN;
1161     else if (strcmp(name, "rsa_keygen_bits") == 0)
1162         name = OSSL_PKEY_PARAM_RSA_BITS;
1163     else if (strcmp(name, "rsa_keygen_pubexp") == 0)
1164         name = OSSL_PKEY_PARAM_RSA_E;
1165     else if (strcmp(name, "rsa_keygen_primes") == 0)
1166         name = OSSL_PKEY_PARAM_RSA_PRIMES;
1167     else if (strcmp(name, "rsa_pss_keygen_md") == 0)
1168         name = OSSL_PKEY_PARAM_RSA_DIGEST;
1169     else if (strcmp(name, "rsa_pss_keygen_mgf1_md") == 0)
1170         name = OSSL_PKEY_PARAM_RSA_MGF1_DIGEST;
1171     else if (strcmp(name, "rsa_pss_keygen_saltlen") == 0)
1172         name = OSSL_PKEY_PARAM_RSA_PSS_SALTLEN;
1173 # ifndef OPENSSL_NO_DSA
1174     else if (strcmp(name, "dsa_paramgen_bits") == 0)
1175         name = OSSL_PKEY_PARAM_FFC_PBITS;
1176     else if (strcmp(name, "dsa_paramgen_q_bits") == 0)
1177         name = OSSL_PKEY_PARAM_FFC_QBITS;
1178     else if (strcmp(name, "dsa_paramgen_md") == 0)
1179         name = OSSL_PKEY_PARAM_FFC_DIGEST;
1180 # endif
1181 # ifndef OPENSSL_NO_DH
1182     else if (strcmp(name, "dh_paramgen_generator") == 0)
1183         name = OSSL_PKEY_PARAM_DH_GENERATOR;
1184     else if (strcmp(name, "dh_paramgen_prime_len") == 0)
1185         name = OSSL_PKEY_PARAM_FFC_PBITS;
1186     else if (strcmp(name, "dh_paramgen_subprime_len") == 0)
1187         name = OSSL_PKEY_PARAM_FFC_QBITS;
1188     else if (strcmp(name, "dh_paramgen_type") == 0) {
1189         name = OSSL_PKEY_PARAM_FFC_TYPE;
1190         value = dh_gen_type_id2name(atoi(value));
1191     } else if (strcmp(name, "dh_param") == 0)
1192         name = OSSL_PKEY_PARAM_GROUP_NAME;
1193     else if (strcmp(name, "dh_rfc5114") == 0) {
1194         name = OSSL_PKEY_PARAM_GROUP_NAME;
1195         value = ffc_named_group_from_uid(atoi(value));
1196     } else if (strcmp(name, "dh_pad") == 0)
1197         name = OSSL_EXCHANGE_PARAM_PAD;
1198 # endif
1199 # ifndef OPENSSL_NO_EC
1200     else if (strcmp(name, "ec_paramgen_curve") == 0)
1201         name = OSSL_PKEY_PARAM_GROUP_NAME;
1202     else if (strcmp(name, "ecdh_cofactor_mode") == 0)
1203         name = OSSL_EXCHANGE_PARAM_EC_ECDH_COFACTOR_MODE;
1204     else if (strcmp(name, "ecdh_kdf_md") == 0)
1205         name = OSSL_EXCHANGE_PARAM_KDF_DIGEST;
1206 # endif
1207
1208     {
1209         /*
1210          * TODO(3.0) reduce the code above to only translate known legacy
1211          * string to the corresponding core name (see core_names.h), but
1212          * otherwise leave it to this code block to do the actual work.
1213          */
1214         const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
1215         OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
1216         int rv = 0;
1217         int exists = 0;
1218
1219         if (!OSSL_PARAM_allocate_from_text(&params[0], settable, name, value,
1220                                            strlen(value), &exists)) {
1221             if (!exists) {
1222                 ERR_raise_data(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED,
1223                                "name=%s,value=%s", name, value);
1224                 return -2;
1225             }
1226             return 0;
1227         }
1228         if (EVP_PKEY_CTX_set_params(ctx, params))
1229             rv = 1;
1230         OPENSSL_free(params[0].data);
1231         return rv;
1232     }
1233 }
1234
1235 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
1236                           const char *name, const char *value)
1237 {
1238     if (ctx == NULL) {
1239         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
1240         return -2;
1241     }
1242
1243     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
1244             || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
1245                 && ctx->op.sig.sigprovctx != NULL)
1246             || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
1247                 && ctx->op.ciph.ciphprovctx != NULL)
1248             || (EVP_PKEY_CTX_IS_GEN_OP(ctx)
1249                 && ctx->op.keymgmt.genctx != NULL))
1250         return legacy_ctrl_str_to_param(ctx, name, value);
1251
1252     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
1253         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
1254         return -2;
1255     }
1256     if (strcmp(name, "digest") == 0)
1257         return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
1258                                value);
1259     return ctx->pmeth->ctrl_str(ctx, name, value);
1260 }
1261
1262 /* Utility functions to send a string of hex string to a ctrl */
1263
1264 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
1265 {
1266     size_t len;
1267
1268     len = strlen(str);
1269     if (len > INT_MAX)
1270         return -1;
1271     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
1272 }
1273
1274 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
1275 {
1276     unsigned char *bin;
1277     long binlen;
1278     int rv = -1;
1279
1280     bin = OPENSSL_hexstr2buf(hex, &binlen);
1281     if (bin == NULL)
1282         return 0;
1283     if (binlen <= INT_MAX)
1284         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
1285     OPENSSL_free(bin);
1286     return rv;
1287 }
1288
1289 /* Pass a message digest to a ctrl */
1290 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
1291 {
1292     const EVP_MD *m;
1293
1294     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
1295         EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
1296         return 0;
1297     }
1298     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
1299 }
1300
1301 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
1302 {
1303     return ctx->operation;
1304 }
1305
1306 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
1307 {
1308     ctx->keygen_info = dat;
1309     ctx->keygen_info_count = datlen;
1310 }
1311
1312 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
1313 {
1314     ctx->data = data;
1315 }
1316
1317 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
1318 {
1319     return ctx->data;
1320 }
1321
1322 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
1323 {
1324     return ctx->pkey;
1325 }
1326
1327 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
1328 {
1329     return ctx->peerkey;
1330 }
1331
1332 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
1333 {
1334     ctx->app_data = data;
1335 }
1336
1337 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
1338 {
1339     return ctx->app_data;
1340 }
1341
1342 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1343                             int (*init) (EVP_PKEY_CTX *ctx))
1344 {
1345     pmeth->init = init;
1346 }
1347
1348 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1349                             int (*copy) (EVP_PKEY_CTX *dst,
1350                                          const EVP_PKEY_CTX *src))
1351 {
1352     pmeth->copy = copy;
1353 }
1354
1355 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1356                                void (*cleanup) (EVP_PKEY_CTX *ctx))
1357 {
1358     pmeth->cleanup = cleanup;
1359 }
1360
1361 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1362                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1363                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
1364                                                  EVP_PKEY *pkey))
1365 {
1366     pmeth->paramgen_init = paramgen_init;
1367     pmeth->paramgen = paramgen;
1368 }
1369
1370 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1371                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
1372                               int (*keygen) (EVP_PKEY_CTX *ctx,
1373                                              EVP_PKEY *pkey))
1374 {
1375     pmeth->keygen_init = keygen_init;
1376     pmeth->keygen = keygen;
1377 }
1378
1379 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1380                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1381                             int (*sign) (EVP_PKEY_CTX *ctx,
1382                                          unsigned char *sig, size_t *siglen,
1383                                          const unsigned char *tbs,
1384                                          size_t tbslen))
1385 {
1386     pmeth->sign_init = sign_init;
1387     pmeth->sign = sign;
1388 }
1389
1390 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1391                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1392                               int (*verify) (EVP_PKEY_CTX *ctx,
1393                                              const unsigned char *sig,
1394                                              size_t siglen,
1395                                              const unsigned char *tbs,
1396                                              size_t tbslen))
1397 {
1398     pmeth->verify_init = verify_init;
1399     pmeth->verify = verify;
1400 }
1401
1402 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1403                                       int (*verify_recover_init) (EVP_PKEY_CTX
1404                                                                   *ctx),
1405                                       int (*verify_recover) (EVP_PKEY_CTX
1406                                                              *ctx,
1407                                                              unsigned char
1408                                                              *sig,
1409                                                              size_t *siglen,
1410                                                              const unsigned
1411                                                              char *tbs,
1412                                                              size_t tbslen))
1413 {
1414     pmeth->verify_recover_init = verify_recover_init;
1415     pmeth->verify_recover = verify_recover;
1416 }
1417
1418 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1419                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1420                                                     EVP_MD_CTX *mctx),
1421                                int (*signctx) (EVP_PKEY_CTX *ctx,
1422                                                unsigned char *sig,
1423                                                size_t *siglen,
1424                                                EVP_MD_CTX *mctx))
1425 {
1426     pmeth->signctx_init = signctx_init;
1427     pmeth->signctx = signctx;
1428 }
1429
1430 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1431                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1432                                                         EVP_MD_CTX *mctx),
1433                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1434                                                    const unsigned char *sig,
1435                                                    int siglen,
1436                                                    EVP_MD_CTX *mctx))
1437 {
1438     pmeth->verifyctx_init = verifyctx_init;
1439     pmeth->verifyctx = verifyctx;
1440 }
1441
1442 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1443                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1444                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1445                                                  unsigned char *out,
1446                                                  size_t *outlen,
1447                                                  const unsigned char *in,
1448                                                  size_t inlen))
1449 {
1450     pmeth->encrypt_init = encrypt_init;
1451     pmeth->encrypt = encryptfn;
1452 }
1453
1454 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1455                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1456                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1457                                                unsigned char *out,
1458                                                size_t *outlen,
1459                                                const unsigned char *in,
1460                                                size_t inlen))
1461 {
1462     pmeth->decrypt_init = decrypt_init;
1463     pmeth->decrypt = decrypt;
1464 }
1465
1466 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1467                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1468                               int (*derive) (EVP_PKEY_CTX *ctx,
1469                                              unsigned char *key,
1470                                              size_t *keylen))
1471 {
1472     pmeth->derive_init = derive_init;
1473     pmeth->derive = derive;
1474 }
1475
1476 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1477                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1478                                          void *p2),
1479                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1480                                              const char *type,
1481                                              const char *value))
1482 {
1483     pmeth->ctrl = ctrl;
1484     pmeth->ctrl_str = ctrl_str;
1485 }
1486
1487 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1488     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1489                        const unsigned char *tbs, size_t tbslen))
1490 {
1491     pmeth->digestsign = digestsign;
1492 }
1493
1494 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1495     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1496                          size_t siglen, const unsigned char *tbs,
1497                          size_t tbslen))
1498 {
1499     pmeth->digestverify = digestverify;
1500 }
1501
1502 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1503                              int (*check) (EVP_PKEY *pkey))
1504 {
1505     pmeth->check = check;
1506 }
1507
1508 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1509                                     int (*check) (EVP_PKEY *pkey))
1510 {
1511     pmeth->public_check = check;
1512 }
1513
1514 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1515                                    int (*check) (EVP_PKEY *pkey))
1516 {
1517     pmeth->param_check = check;
1518 }
1519
1520 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1521                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
1522                                                            EVP_MD_CTX *mctx))
1523 {
1524     pmeth->digest_custom = digest_custom;
1525 }
1526
1527 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1528                             int (**pinit) (EVP_PKEY_CTX *ctx))
1529 {
1530     *pinit = pmeth->init;
1531 }
1532
1533 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
1534                             int (**pcopy) (EVP_PKEY_CTX *dst,
1535                                            const EVP_PKEY_CTX *src))
1536 {
1537     *pcopy = pmeth->copy;
1538 }
1539
1540 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
1541                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
1542 {
1543     *pcleanup = pmeth->cleanup;
1544 }
1545
1546 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
1547                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
1548                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
1549                                                    EVP_PKEY *pkey))
1550 {
1551     if (pparamgen_init)
1552         *pparamgen_init = pmeth->paramgen_init;
1553     if (pparamgen)
1554         *pparamgen = pmeth->paramgen;
1555 }
1556
1557 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
1558                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
1559                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
1560                                                EVP_PKEY *pkey))
1561 {
1562     if (pkeygen_init)
1563         *pkeygen_init = pmeth->keygen_init;
1564     if (pkeygen)
1565         *pkeygen = pmeth->keygen;
1566 }
1567
1568 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
1569                             int (**psign_init) (EVP_PKEY_CTX *ctx),
1570                             int (**psign) (EVP_PKEY_CTX *ctx,
1571                                            unsigned char *sig, size_t *siglen,
1572                                            const unsigned char *tbs,
1573                                            size_t tbslen))
1574 {
1575     if (psign_init)
1576         *psign_init = pmeth->sign_init;
1577     if (psign)
1578         *psign = pmeth->sign;
1579 }
1580
1581 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
1582                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
1583                               int (**pverify) (EVP_PKEY_CTX *ctx,
1584                                                const unsigned char *sig,
1585                                                size_t siglen,
1586                                                const unsigned char *tbs,
1587                                                size_t tbslen))
1588 {
1589     if (pverify_init)
1590         *pverify_init = pmeth->verify_init;
1591     if (pverify)
1592         *pverify = pmeth->verify;
1593 }
1594
1595 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
1596                                       int (**pverify_recover_init) (EVP_PKEY_CTX
1597                                                                     *ctx),
1598                                       int (**pverify_recover) (EVP_PKEY_CTX
1599                                                                *ctx,
1600                                                                unsigned char
1601                                                                *sig,
1602                                                                size_t *siglen,
1603                                                                const unsigned
1604                                                                char *tbs,
1605                                                                size_t tbslen))
1606 {
1607     if (pverify_recover_init)
1608         *pverify_recover_init = pmeth->verify_recover_init;
1609     if (pverify_recover)
1610         *pverify_recover = pmeth->verify_recover;
1611 }
1612
1613 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
1614                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
1615                                                       EVP_MD_CTX *mctx),
1616                                int (**psignctx) (EVP_PKEY_CTX *ctx,
1617                                                  unsigned char *sig,
1618                                                  size_t *siglen,
1619                                                  EVP_MD_CTX *mctx))
1620 {
1621     if (psignctx_init)
1622         *psignctx_init = pmeth->signctx_init;
1623     if (psignctx)
1624         *psignctx = pmeth->signctx;
1625 }
1626
1627 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
1628                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
1629                                                           EVP_MD_CTX *mctx),
1630                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
1631                                                      const unsigned char *sig,
1632                                                      int siglen,
1633                                                      EVP_MD_CTX *mctx))
1634 {
1635     if (pverifyctx_init)
1636         *pverifyctx_init = pmeth->verifyctx_init;
1637     if (pverifyctx)
1638         *pverifyctx = pmeth->verifyctx;
1639 }
1640
1641 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
1642                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
1643                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
1644                                                    unsigned char *out,
1645                                                    size_t *outlen,
1646                                                    const unsigned char *in,
1647                                                    size_t inlen))
1648 {
1649     if (pencrypt_init)
1650         *pencrypt_init = pmeth->encrypt_init;
1651     if (pencryptfn)
1652         *pencryptfn = pmeth->encrypt;
1653 }
1654
1655 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
1656                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
1657                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
1658                                                  unsigned char *out,
1659                                                  size_t *outlen,
1660                                                  const unsigned char *in,
1661                                                  size_t inlen))
1662 {
1663     if (pdecrypt_init)
1664         *pdecrypt_init = pmeth->decrypt_init;
1665     if (pdecrypt)
1666         *pdecrypt = pmeth->decrypt;
1667 }
1668
1669 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
1670                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
1671                               int (**pderive) (EVP_PKEY_CTX *ctx,
1672                                                unsigned char *key,
1673                                                size_t *keylen))
1674 {
1675     if (pderive_init)
1676         *pderive_init = pmeth->derive_init;
1677     if (pderive)
1678         *pderive = pmeth->derive;
1679 }
1680
1681 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
1682                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1683                                            void *p2),
1684                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
1685                                                const char *type,
1686                                                const char *value))
1687 {
1688     if (pctrl)
1689         *pctrl = pmeth->ctrl;
1690     if (pctrl_str)
1691         *pctrl_str = pmeth->ctrl_str;
1692 }
1693
1694 void EVP_PKEY_meth_get_digestsign(EVP_PKEY_METHOD *pmeth,
1695     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1696                         const unsigned char *tbs, size_t tbslen))
1697 {
1698     if (digestsign)
1699         *digestsign = pmeth->digestsign;
1700 }
1701
1702 void EVP_PKEY_meth_get_digestverify(EVP_PKEY_METHOD *pmeth,
1703     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1704                           size_t siglen, const unsigned char *tbs,
1705                           size_t tbslen))
1706 {
1707     if (digestverify)
1708         *digestverify = pmeth->digestverify;
1709 }
1710
1711 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
1712                              int (**pcheck) (EVP_PKEY *pkey))
1713 {
1714     if (pcheck != NULL)
1715         *pcheck = pmeth->check;
1716 }
1717
1718 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
1719                                     int (**pcheck) (EVP_PKEY *pkey))
1720 {
1721     if (pcheck != NULL)
1722         *pcheck = pmeth->public_check;
1723 }
1724
1725 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
1726                                    int (**pcheck) (EVP_PKEY *pkey))
1727 {
1728     if (pcheck != NULL)
1729         *pcheck = pmeth->param_check;
1730 }
1731
1732 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
1733                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
1734                                                              EVP_MD_CTX *mctx))
1735 {
1736     if (pdigest_custom != NULL)
1737         *pdigest_custom = pmeth->digest_custom;
1738 }
1739
1740 #endif /* FIPS_MODULE */