crypto/evp/pmeth_lib.c

   1
   2 /*
   3  * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
   4  *
   5  * Licensed under the Apache License 2.0 (the "License").  You may not use
   6  * this file except in compliance with the License.  You can obtain a copy
   7  * in the file LICENSE in the source distribution or at
   8  * https://www.openssl.org/source/license.html
   9  */
  10
  11 /*
  12  * DH low level APIs are deprecated for public use, but still ok for
  13  * internal use.
  14  */
  15 #include "internal/deprecated.h"
  16
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19 #include <openssl/engine.h>
  20 #include <openssl/evp.h>
  21 #include <openssl/x509v3.h>
  22 #include <openssl/core_names.h>
  23 #include <openssl/dh.h>
  24 #include <openssl/rsa.h>
  25 #include "internal/cryptlib.h"
  26 #include "crypto/asn1.h"
  27 #include "crypto/evp.h"
  28 #include "internal/numbers.h"
  29 #include "internal/provider.h"
  30 #include "evp_local.h"
  31
  32 #ifndef FIPS_MODE
  33
  34 typedef const EVP_PKEY_METHOD *(*pmeth_fn)(void);
  35 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
  36
  37 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
  38
  39 /* This array needs to be in order of NIDs */
  40 static pmeth_fn standard_methods[] = {
  41 # ifndef OPENSSL_NO_RSA
  42     rsa_pkey_method,
  43 # endif
  44 # ifndef OPENSSL_NO_DH
  45     dh_pkey_method,
  46 # endif
  47 # ifndef OPENSSL_NO_DSA
  48     dsa_pkey_method,
  49 # endif
  50 # ifndef OPENSSL_NO_EC
  51     ec_pkey_method,
  52 # endif
  53     hmac_pkey_method,
  54 # ifndef OPENSSL_NO_CMAC
  55     cmac_pkey_method,
  56 # endif
  57 # ifndef OPENSSL_NO_RSA
  58     rsa_pss_pkey_method,
  59 # endif
  60 # ifndef OPENSSL_NO_DH
  61     dhx_pkey_method,
  62 # endif
  63 # ifndef OPENSSL_NO_SCRYPT
  64     scrypt_pkey_method,
  65 # endif
  66     tls1_prf_pkey_method,
  67 # ifndef OPENSSL_NO_EC
  68     ecx25519_pkey_method,
  69     ecx448_pkey_method,
  70 # endif
  71     hkdf_pkey_method,
  72 # ifndef OPENSSL_NO_POLY1305
  73     poly1305_pkey_method,
  74 # endif
  75 # ifndef OPENSSL_NO_SIPHASH
  76     siphash_pkey_method,
  77 # endif
  78 # ifndef OPENSSL_NO_EC
  79     ed25519_pkey_method,
  80     ed448_pkey_method,
  81 # endif
  82 # ifndef OPENSSL_NO_SM2
  83     sm2_pkey_method,
  84 # endif
  85 };
  86
  87 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  88
  89 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
  90 {
  91     return ((*a)->pkey_id - ((**b)())->pkey_id);
  92 }
  93
  94 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  95
  96 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  97                      const EVP_PKEY_METHOD *const *b)
  98 {
  99     return ((*a)->pkey_id - (*b)->pkey_id);
 100 }
 101
 102 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
 103 {
 104     pmeth_fn *ret;
 105     EVP_PKEY_METHOD tmp;
 106     const EVP_PKEY_METHOD *t = &tmp;
 107
 108     tmp.pkey_id = type;
 109     if (app_pkey_methods) {
 110         int idx;
 111         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
 112         if (idx >= 0)
 113             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 114     }
 115     ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
 116                                  sizeof(standard_methods) /
 117                                  sizeof(pmeth_fn));
 118     if (ret == NULL || *ret == NULL)
 119         return NULL;
 120     return (**ret)();
 121 }
 122
 123 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 124 {
 125     EVP_PKEY_METHOD *pmeth;
 126
 127     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 128     if (pmeth == NULL) {
 129         EVPerr(EVP_F_EVP_PKEY_METH_NEW, ERR_R_MALLOC_FAILURE);
 130         return NULL;
 131     }
 132
 133     pmeth->pkey_id = id;
 134     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 135     return pmeth;
 136 }
 137 #endif /* FIPS_MODE */
 138
 139 static EVP_PKEY_CTX *int_ctx_new(OPENSSL_CTX *libctx,
 140                                  EVP_PKEY *pkey, ENGINE *e,
 141                                  const char *name, const char *propquery,
 142                                  int id)
 143
 144 {
 145     EVP_PKEY_CTX *ret;
 146     const EVP_PKEY_METHOD *pmeth = NULL;
 147
 148     /*
 149      * When using providers, the context is bound to the algo implementation
 150      * later.
 151      */
 152     if (pkey == NULL && e == NULL && id == -1)
 153         goto common;
 154
 155     /*
 156      * If the key doesn't contain anything legacy, then it must be provided,
 157      * so we extract the necessary information and use that.
 158      */
 159     if (pkey != NULL && pkey->ameth == NULL) {
 160         /* If we have an engine, something went wrong somewhere... */
 161         if (!ossl_assert(e == NULL))
 162             return NULL;
 163         name = evp_first_name(pkey->pkeys[0].keymgmt->prov,
 164                               pkey->pkeys[0].keymgmt->name_id);
 165         /*
 166          * TODO: I wonder if the EVP_PKEY should have the name and propquery
 167          * that were used when building it....  /RL
 168          */
 169         goto common;
 170     }
 171 #ifndef FIPS_MODE
 172     /* TODO(3.0) Legacy code should be removed when all is provider based */
 173     /* BEGIN legacy */
 174     if (id == -1) {
 175         if (pkey == NULL)
 176             return NULL;
 177         id = pkey->type;
 178     }
 179
 180     /*
 181      * Here, we extract what information we can for the purpose of
 182      * supporting usage with implementations from providers, to make
 183      * for a smooth transition from legacy stuff to provider based stuff.
 184      *
 185      * If an engine is given, this is entirely legacy, and we should not
 186      * pretend anything else, so we only set the name when no engine is
 187      * given.  If both are already given, someone made a mistake, and
 188      * since that can only happen internally, it's safe to make an
 189      * assertion.
 190      */
 191     if (!ossl_assert(e == NULL || name == NULL))
 192         return NULL;
 193     if (e == NULL)
 194         name = OBJ_nid2sn(id);
 195
 196 # ifndef OPENSSL_NO_ENGINE
 197     if (e == NULL && pkey != NULL)
 198         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 199     /* Try to find an ENGINE which implements this method */
 200     if (e) {
 201         if (!ENGINE_init(e)) {
 202             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
 203             return NULL;
 204         }
 205     } else {
 206         e = ENGINE_get_pkey_meth_engine(id);
 207     }
 208
 209     /*
 210      * If an ENGINE handled this method look it up. Otherwise use internal
 211      * tables.
 212      */
 213     if (e)
 214         pmeth = ENGINE_get_pkey_meth(e, id);
 215     else
 216 # endif
 217         pmeth = EVP_PKEY_meth_find(id);
 218
 219     if (pmeth == NULL) {
 220 # ifndef OPENSSL_NO_ENGINE
 221         ENGINE_finish(e);
 222 # endif
 223         EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
 224         return NULL;
 225     }
 226     /* END legacy */
 227 #endif /* FIPS_MODE */
 228  common:
 229     ret = OPENSSL_zalloc(sizeof(*ret));
 230     if (ret == NULL) {
 231 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
 232         ENGINE_finish(e);
 233 #endif
 234         EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
 235         return NULL;
 236     }
 237     ret->libctx = libctx;
 238     ret->keytype = name;
 239     ret->propquery = propquery;
 240     ret->engine = e;
 241     ret->pmeth = pmeth;
 242     ret->operation = EVP_PKEY_OP_UNDEFINED;
 243     ret->pkey = pkey;
 244     if (pkey != NULL)
 245         EVP_PKEY_up_ref(pkey);
 246
 247     if (pmeth != NULL && pmeth->init != NULL) {
 248         if (pmeth->init(ret) <= 0) {
 249             ret->pmeth = NULL;
 250             EVP_PKEY_CTX_free(ret);
 251             return NULL;
 252         }
 253     }
 254
 255     return ret;
 256 }
 257
 258 /*- All methods below can also be used in FIPS_MODE */
 259
 260 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OPENSSL_CTX *libctx,
 261                                          const char *name,
 262                                          const char *propquery)
 263 {
 264     return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
 265 }
 266
 267 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OPENSSL_CTX *libctx, EVP_PKEY *pkey,
 268                                          const char *propquery)
 269 {
 270     return int_ctx_new(libctx, pkey, NULL, NULL, propquery, -1);
 271 }
 272
 273 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
 274 {
 275     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 276         if (ctx->op.sig.sigprovctx != NULL && ctx->op.sig.signature != NULL)
 277             ctx->op.sig.signature->freectx(ctx->op.sig.sigprovctx);
 278         EVP_SIGNATURE_free(ctx->op.sig.signature);
 279         ctx->op.sig.sigprovctx = NULL;
 280         ctx->op.sig.signature = NULL;
 281     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 282         if (ctx->op.kex.exchprovctx != NULL && ctx->op.kex.exchange != NULL)
 283             ctx->op.kex.exchange->freectx(ctx->op.kex.exchprovctx);
 284         EVP_KEYEXCH_free(ctx->op.kex.exchange);
 285         ctx->op.kex.exchprovctx = NULL;
 286         ctx->op.kex.exchange = NULL;
 287     }
 288 /* TODO(3.0): add dependancies and uncomment this when available for fips mode */
 289 #ifndef FIPS_MODE
 290     else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
 291         if (ctx->op.ciph.ciphprovctx != NULL && ctx->op.ciph.cipher != NULL)
 292             ctx->op.ciph.cipher->freectx(ctx->op.ciph.ciphprovctx);
 293         EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
 294         ctx->op.ciph.ciphprovctx = NULL;
 295         ctx->op.ciph.cipher = NULL;
 296     }
 297 #endif
 298 }
 299
 300 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 301 {
 302     if (ctx == NULL)
 303         return;
 304     if (ctx->pmeth && ctx->pmeth->cleanup)
 305         ctx->pmeth->cleanup(ctx);
 306
 307     evp_pkey_ctx_free_old_ops(ctx);
 308     EVP_KEYMGMT_free(ctx->keymgmt);
 309
 310     EVP_PKEY_free(ctx->pkey);
 311     EVP_PKEY_free(ctx->peerkey);
 312 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
 313     ENGINE_finish(ctx->engine);
 314 #endif
 315     OPENSSL_free(ctx);
 316 }
 317
 318 #ifndef FIPS_MODE
 319
 320 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 321                              const EVP_PKEY_METHOD *meth)
 322 {
 323     if (ppkey_id)
 324         *ppkey_id = meth->pkey_id;
 325     if (pflags)
 326         *pflags = meth->flags;
 327 }
 328
 329 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 330 {
 331
 332     dst->init = src->init;
 333     dst->copy = src->copy;
 334     dst->cleanup = src->cleanup;
 335
 336     dst->paramgen_init = src->paramgen_init;
 337     dst->paramgen = src->paramgen;
 338
 339     dst->keygen_init = src->keygen_init;
 340     dst->keygen = src->keygen;
 341
 342     dst->sign_init = src->sign_init;
 343     dst->sign = src->sign;
 344
 345     dst->verify_init = src->verify_init;
 346     dst->verify = src->verify;
 347
 348     dst->verify_recover_init = src->verify_recover_init;
 349     dst->verify_recover = src->verify_recover;
 350
 351     dst->signctx_init = src->signctx_init;
 352     dst->signctx = src->signctx;
 353
 354     dst->verifyctx_init = src->verifyctx_init;
 355     dst->verifyctx = src->verifyctx;
 356
 357     dst->encrypt_init = src->encrypt_init;
 358     dst->encrypt = src->encrypt;
 359
 360     dst->decrypt_init = src->decrypt_init;
 361     dst->decrypt = src->decrypt;
 362
 363     dst->derive_init = src->derive_init;
 364     dst->derive = src->derive;
 365
 366     dst->ctrl = src->ctrl;
 367     dst->ctrl_str = src->ctrl_str;
 368
 369     dst->check = src->check;
 370 }
 371
 372 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 373 {
 374     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 375         OPENSSL_free(pmeth);
 376 }
 377
 378 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 379 {
 380     return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
 381 }
 382
 383 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 384 {
 385     return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
 386 }
 387
 388 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 389 {
 390     EVP_PKEY_CTX *rctx;
 391
 392     if (((pctx->pmeth == NULL) || (pctx->pmeth->copy == NULL))
 393             && ((EVP_PKEY_CTX_IS_DERIVE_OP(pctx)
 394                  && pctx->op.kex.exchprovctx == NULL)
 395                 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)
 396                     && pctx->op.sig.sigprovctx == NULL)))
 397         return NULL;
 398 # ifndef OPENSSL_NO_ENGINE
 399     /* Make sure it's safe to copy a pkey context using an ENGINE */
 400     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 401         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
 402         return 0;
 403     }
 404 # endif
 405     rctx = OPENSSL_zalloc(sizeof(*rctx));
 406     if (rctx == NULL) {
 407         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_MALLOC_FAILURE);
 408         return NULL;
 409     }
 410
 411     if (pctx->pkey != NULL)
 412         EVP_PKEY_up_ref(pctx->pkey);
 413     rctx->pkey = pctx->pkey;
 414     rctx->operation = pctx->operation;
 415     rctx->libctx = pctx->libctx;
 416     rctx->keytype = pctx->keytype;
 417     rctx->propquery = pctx->propquery;
 418
 419     if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
 420         if (pctx->op.kex.exchange != NULL) {
 421             rctx->op.kex.exchange = pctx->op.kex.exchange;
 422             if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange)) {
 423                 OPENSSL_free(rctx);
 424                 return NULL;
 425             }
 426         }
 427         if (pctx->op.kex.exchprovctx != NULL) {
 428             if (!ossl_assert(pctx->op.kex.exchange != NULL))
 429                 return NULL;
 430             rctx->op.kex.exchprovctx
 431                 = pctx->op.kex.exchange->dupctx(pctx->op.kex.exchprovctx);
 432             if (rctx->op.kex.exchprovctx == NULL) {
 433                 EVP_KEYEXCH_free(rctx->op.kex.exchange);
 434                 OPENSSL_free(rctx);
 435                 return NULL;
 436             }
 437             return rctx;
 438         }
 439     } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
 440         if (pctx->op.sig.signature != NULL) {
 441             rctx->op.sig.signature = pctx->op.sig.signature;
 442             if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature)) {
 443                 OPENSSL_free(rctx);
 444                 return NULL;
 445             }
 446         }
 447         if (pctx->op.sig.sigprovctx != NULL) {
 448             if (!ossl_assert(pctx->op.sig.signature != NULL))
 449                 return NULL;
 450             rctx->op.sig.sigprovctx
 451                 = pctx->op.sig.signature->dupctx(pctx->op.sig.sigprovctx);
 452             if (rctx->op.sig.sigprovctx == NULL) {
 453                 EVP_SIGNATURE_free(rctx->op.sig.signature);
 454                 OPENSSL_free(rctx);
 455                 return NULL;
 456             }
 457             return rctx;
 458         }
 459     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
 460         if (pctx->op.ciph.cipher != NULL) {
 461             rctx->op.ciph.cipher = pctx->op.ciph.cipher;
 462             if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher)) {
 463                 OPENSSL_free(rctx);
 464                 return NULL;
 465             }
 466         }
 467         if (pctx->op.ciph.ciphprovctx != NULL) {
 468             if (!ossl_assert(pctx->op.ciph.cipher != NULL))
 469                 return NULL;
 470             rctx->op.ciph.ciphprovctx
 471                 = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.ciphprovctx);
 472             if (rctx->op.ciph.ciphprovctx == NULL) {
 473                 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
 474                 OPENSSL_free(rctx);
 475                 return NULL;
 476             }
 477             return rctx;
 478         }
 479     }
 480
 481     rctx->pmeth = pctx->pmeth;
 482 # ifndef OPENSSL_NO_ENGINE
 483     rctx->engine = pctx->engine;
 484 # endif
 485
 486     if (pctx->peerkey)
 487         EVP_PKEY_up_ref(pctx->peerkey);
 488     rctx->peerkey = pctx->peerkey;
 489
 490     if (pctx->pmeth->copy(rctx, pctx) > 0)
 491         return rctx;
 492
 493     rctx->pmeth = NULL;
 494     EVP_PKEY_CTX_free(rctx);
 495     return NULL;
 496
 497 }
 498
 499 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 500 {
 501     if (app_pkey_methods == NULL) {
 502         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 503         if (app_pkey_methods == NULL){
 504             EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 505             return 0;
 506         }
 507     }
 508     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 509         EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 510         return 0;
 511     }
 512     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 513     return 1;
 514 }
 515
 516 void evp_app_cleanup_int(void)
 517 {
 518     if (app_pkey_methods != NULL)
 519         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 520 }
 521
 522 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 523 {
 524     const EVP_PKEY_METHOD *ret;
 525
 526     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 527
 528     return ret == NULL ? 0 : 1;
 529 }
 530
 531 size_t EVP_PKEY_meth_get_count(void)
 532 {
 533     size_t rv = OSSL_NELEM(standard_methods);
 534
 535     if (app_pkey_methods)
 536         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 537     return rv;
 538 }
 539
 540 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 541 {
 542     if (idx < OSSL_NELEM(standard_methods))
 543         return (standard_methods[idx])();
 544     if (app_pkey_methods == NULL)
 545         return NULL;
 546     idx -= OSSL_NELEM(standard_methods);
 547     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 548         return NULL;
 549     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 550 }
 551 #endif
 552
 553 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 554 {
 555     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 556             && ctx->op.kex.exchprovctx != NULL
 557             && ctx->op.kex.exchange != NULL
 558             && ctx->op.kex.exchange->set_ctx_params != NULL)
 559         return ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.exchprovctx,
 560                                                     params);
 561     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 562             && ctx->op.sig.sigprovctx != NULL
 563             && ctx->op.sig.signature != NULL
 564             && ctx->op.sig.signature->set_ctx_params != NULL)
 565         return ctx->op.sig.signature->set_ctx_params(ctx->op.sig.sigprovctx,
 566                                                      params);
 567     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 568             && ctx->op.ciph.ciphprovctx != NULL
 569             && ctx->op.ciph.cipher != NULL
 570             && ctx->op.ciph.cipher->set_ctx_params != NULL)
 571         return ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.ciphprovctx,
 572                                                      params);
 573     return 0;
 574 }
 575
 576 #ifndef FIPS_MODE
 577 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 578 {
 579     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 580             && ctx->op.kex.exchprovctx != NULL
 581             && ctx->op.kex.exchange != NULL
 582             && ctx->op.kex.exchange->get_ctx_params != NULL)
 583         return ctx->op.kex.exchange->get_ctx_params(ctx->op.kex.exchprovctx,
 584                                                     params);
 585     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 586             && ctx->op.sig.sigprovctx != NULL
 587             && ctx->op.sig.signature != NULL
 588             && ctx->op.sig.signature->get_ctx_params != NULL)
 589         return ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx,
 590                                                      params);
 591     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 592             && ctx->op.ciph.ciphprovctx != NULL
 593             && ctx->op.ciph.cipher != NULL
 594             && ctx->op.ciph.cipher->get_ctx_params != NULL)
 595         return ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.ciphprovctx,
 596                                                    params);
 597     return 0;
 598 }
 599
 600 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx)
 601 {
 602     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 603             && ctx->op.kex.exchange != NULL
 604             && ctx->op.kex.exchange->gettable_ctx_params != NULL)
 605         return ctx->op.kex.exchange->gettable_ctx_params();
 606     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 607             && ctx->op.sig.signature != NULL
 608             && ctx->op.sig.signature->gettable_ctx_params != NULL)
 609         return ctx->op.sig.signature->gettable_ctx_params();
 610
 611     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 612             && ctx->op.ciph.cipher != NULL
 613             && ctx->op.ciph.cipher->gettable_ctx_params != NULL)
 614         return ctx->op.ciph.cipher->gettable_ctx_params();
 615
 616     return NULL;
 617 }
 618
 619 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx)
 620 {
 621     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 622             && ctx->op.kex.exchange != NULL
 623             && ctx->op.kex.exchange->settable_ctx_params != NULL)
 624         return ctx->op.kex.exchange->settable_ctx_params();
 625     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 626             && ctx->op.sig.signature != NULL
 627             && ctx->op.sig.signature->settable_ctx_params != NULL)
 628         return ctx->op.sig.signature->settable_ctx_params();
 629     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 630             && ctx->op.ciph.cipher != NULL
 631             && ctx->op.ciph.cipher->settable_ctx_params != NULL)
 632         return ctx->op.ciph.cipher->settable_ctx_params();
 633
 634     return NULL;
 635 }
 636
 637 /*
 638  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
 639  *
 640  * Return 1 on success, 0 or negative for errors.
 641  *
 642  * In particular they return -2 if any of the params is not supported.
 643  *
 644  * They are not available in FIPS_MODE as they depend on
 645  *      - EVP_PKEY_CTX_{get,set}_params()
 646  *      - EVP_PKEY_CTX_{gettable,settable}_params()
 647  *
 648  */
 649 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 650 {
 651     const OSSL_PARAM *p;
 652
 653     if (ctx == NULL || params == NULL)
 654         return 0;
 655
 656     for (p = params; p->key != NULL; p++) {
 657         /* Check the ctx actually understands this parameter */
 658         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_settable_params(ctx),
 659                                     p->key) == NULL )
 660             return -2;
 661     }
 662
 663     return EVP_PKEY_CTX_set_params(ctx, params);
 664 }
 665
 666 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 667 {
 668     const OSSL_PARAM *p;
 669
 670     if (ctx == NULL || params == NULL)
 671         return 0;
 672
 673     for (p = params; p->key != NULL; p++ ) {
 674         /* Check the ctx actually understands this parameter */
 675         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_gettable_params(ctx),
 676                                     p->key) == NULL )
 677             return -2;
 678     }
 679
 680     return EVP_PKEY_CTX_get_params(ctx, params);
 681 }
 682
 683 # ifndef OPENSSL_NO_DH
 684 int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad)
 685 {
 686     OSSL_PARAM dh_pad_params[2];
 687     unsigned int upad = pad;
 688
 689     /* We use EVP_PKEY_CTX_ctrl return values */
 690     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 691         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 692         return -2;
 693     }
 694
 695     /* TODO(3.0): Remove this eventually when no more legacy */
 696     if (ctx->op.kex.exchprovctx == NULL)
 697         return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_DERIVE,
 698                                  EVP_PKEY_CTRL_DH_PAD, pad, NULL);
 699
 700     dh_pad_params[0] = OSSL_PARAM_construct_uint(OSSL_EXCHANGE_PARAM_PAD, &upad);
 701     dh_pad_params[1] = OSSL_PARAM_construct_end();
 702
 703     return EVP_PKEY_CTX_set_params(ctx, dh_pad_params);
 704 }
 705 # endif
 706
 707 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
 708 {
 709     OSSL_PARAM sig_md_params[3], *p = sig_md_params;
 710     /* 80 should be big enough */
 711     char name[80] = "";
 712     const EVP_MD *tmp;
 713
 714     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 715         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 716         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 717         return -2;
 718     }
 719
 720     /* TODO(3.0): Remove this eventually when no more legacy */
 721     if (ctx->op.sig.sigprovctx == NULL)
 722         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 723                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
 724
 725     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 726                                             name,
 727                                             sizeof(name));
 728     *p++ = OSSL_PARAM_construct_end();
 729
 730     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
 731         return 0;
 732
 733     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
 734     if (tmp == NULL)
 735         return 0;
 736
 737     *md = tmp;
 738
 739     return 1;
 740 }
 741
 742 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 743 {
 744     OSSL_PARAM sig_md_params[2], *p = sig_md_params;
 745     const char *name;
 746
 747     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 748         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 749         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 750         return -2;
 751     }
 752
 753     /* TODO(3.0): Remove this eventually when no more legacy */
 754     if (ctx->op.sig.sigprovctx == NULL)
 755         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 756                                  EVP_PKEY_CTRL_MD, 0, (void *)(md));
 757
 758     if (md == NULL) {
 759         name = "";
 760     } else {
 761         name = EVP_MD_name(md);
 762     }
 763
 764     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 765                                             /*
 766                                              * Cast away the const. This is read
 767                                              * only so should be safe
 768                                              */
 769                                             (char *)name, 0);
 770     *p++ = OSSL_PARAM_construct_end();
 771
 772     return EVP_PKEY_CTX_set_params(ctx, sig_md_params);
 773 }
 774
 775 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
 776                                 int cmd, int p1, void *p2)
 777 {
 778 # ifndef OPENSSL_NO_DH
 779     if (keytype == EVP_PKEY_DH) {
 780         switch (cmd) {
 781             case EVP_PKEY_CTRL_DH_PAD:
 782                 return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
 783         }
 784     }
 785 # endif
 786 # ifndef OPENSSL_NO_EC
 787     if (keytype == EVP_PKEY_EC) {
 788         switch (cmd) {
 789             case EVP_PKEY_CTRL_EC_ECDH_COFACTOR:
 790                 if (p1 == -2) {
 791                     return EVP_PKEY_CTX_get_ecdh_cofactor_mode(ctx);
 792                 } else if (p1 < -1 || p1 > 1) {
 793                     /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 794                     return -2;
 795                 } else {
 796                     return EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, p1);
 797                 }
 798             case EVP_PKEY_CTRL_EC_KDF_TYPE:
 799                 if (p1 == -2) {
 800                     return EVP_PKEY_CTX_get_ecdh_kdf_type(ctx);
 801                 } else {
 802                     return EVP_PKEY_CTX_set_ecdh_kdf_type(ctx, p1);
 803                 }
 804             case EVP_PKEY_CTRL_GET_EC_KDF_MD:
 805                 return EVP_PKEY_CTX_get_ecdh_kdf_md(ctx, p2);
 806             case EVP_PKEY_CTRL_EC_KDF_MD:
 807                 return EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, p2);
 808             case EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN:
 809                 return EVP_PKEY_CTX_get_ecdh_kdf_outlen(ctx, p2);
 810             case EVP_PKEY_CTRL_EC_KDF_OUTLEN:
 811                 return EVP_PKEY_CTX_set_ecdh_kdf_outlen(ctx, p1);
 812             case EVP_PKEY_CTRL_GET_EC_KDF_UKM:
 813                 return EVP_PKEY_CTX_get0_ecdh_kdf_ukm(ctx, p2);
 814             case EVP_PKEY_CTRL_EC_KDF_UKM:
 815                 return EVP_PKEY_CTX_set0_ecdh_kdf_ukm(ctx, p2, p1);
 816         }
 817     }
 818 # endif
 819     if (keytype == -1) {
 820         switch (cmd) {
 821             case EVP_PKEY_CTRL_MD:
 822                 return EVP_PKEY_CTX_set_signature_md(ctx, p2);
 823             case EVP_PKEY_CTRL_GET_MD:
 824                 return EVP_PKEY_CTX_get_signature_md(ctx, p2);
 825             case EVP_PKEY_CTRL_RSA_PADDING:
 826                 return EVP_PKEY_CTX_set_rsa_padding(ctx, p1);
 827             case EVP_PKEY_CTRL_GET_RSA_PADDING:
 828                 return EVP_PKEY_CTX_get_rsa_padding(ctx, p2);
 829             case EVP_PKEY_CTRL_RSA_OAEP_MD:
 830                 return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
 831             case EVP_PKEY_CTRL_GET_RSA_OAEP_MD:
 832                 return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
 833             case EVP_PKEY_CTRL_RSA_MGF1_MD:
 834                 return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
 835             case EVP_PKEY_CTRL_GET_RSA_MGF1_MD:
 836                 return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
 837             case EVP_PKEY_CTRL_RSA_OAEP_LABEL:
 838                 return EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, p2, p1);
 839             case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL:
 840                 return EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, (unsigned char **)p2);
 841             case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
 842             case EVP_PKEY_CTRL_PKCS7_DECRYPT:
 843 # ifndef OPENSSL_NO_CMS
 844             case EVP_PKEY_CTRL_CMS_DECRYPT:
 845             case EVP_PKEY_CTRL_CMS_ENCRYPT:
 846 # endif
 847                 if (ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS)
 848                     return 1;
 849                 ERR_raise(ERR_LIB_EVP,
 850                           EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 851                 return -2;
 852         }
 853     }
 854     return 0;
 855 }
 856
 857 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
 858                       int cmd, int p1, void *p2)
 859 {
 860     int ret;
 861
 862     if (ctx == NULL) {
 863         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 864         return -2;
 865     }
 866
 867     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
 868             || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 869                 && ctx->op.sig.sigprovctx != NULL)
 870             || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 871                 && ctx->op.ciph.ciphprovctx != NULL))
 872         return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
 873
 874     if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
 875         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 876         return -2;
 877     }
 878     if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
 879         return -1;
 880
 881     /* Skip the operation checks since this is called in a very early stage */
 882     if (ctx->pmeth->digest_custom != NULL)
 883         goto doit;
 884
 885     if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
 886         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
 887         return -1;
 888     }
 889
 890     if ((optype != -1) && !(ctx->operation & optype)) {
 891         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
 892         return -1;
 893     }
 894
 895  doit:
 896     ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
 897
 898     if (ret == -2)
 899         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 900
 901     return ret;
 902 }
 903
 904 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
 905                              int cmd, uint64_t value)
 906 {
 907     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
 908 }
 909
 910 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
 911                                     const char *value)
 912 {
 913     if (strcmp(name, "rsa_padding_mode") == 0)
 914         name = OSSL_ASYM_CIPHER_PARAM_PAD_MODE;
 915     else if (strcmp(name, "rsa_mgf1_md") == 0)
 916         name = OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST;
 917     else if (strcmp(name, "rsa_oaep_md") == 0)
 918         name = OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST;
 919     else if (strcmp(name, "rsa_oaep_label") == 0)
 920         name = OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL;
 921 # ifndef OPENSSL_NO_DH
 922     else if (strcmp(name, "dh_pad") == 0)
 923         name = OSSL_EXCHANGE_PARAM_PAD;
 924 # endif
 925 # ifndef OPENSSL_NO_EC
 926     else if (strcmp(name, "ecdh_cofactor_mode") == 0)
 927         name = OSSL_EXCHANGE_PARAM_EC_ECDH_COFACTOR_MODE;
 928     else if (strcmp(name, "ecdh_kdf_md") == 0)
 929         name = OSSL_EXCHANGE_PARAM_KDF_TYPE;
 930 # endif
 931
 932     {
 933         /*
 934          * TODO(3.0) reduce the code above to only translate known legacy
 935          * string to the corresponding core name (see core_names.h), but
 936          * otherwise leave it to this code block to do the actual work.
 937          */
 938         const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
 939         OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
 940         int rv = 0;
 941
 942         if (!OSSL_PARAM_allocate_from_text(&params[0], settable, name, value,
 943                                            strlen(value), NULL))
 944             return 0;
 945         if (EVP_PKEY_CTX_set_params(ctx, params))
 946             rv = 1;
 947         OPENSSL_free(params[0].data);
 948         return rv;
 949     }
 950 }
 951
 952 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
 953                           const char *name, const char *value)
 954 {
 955     if (ctx == NULL) {
 956         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 957         return -2;
 958     }
 959
 960     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
 961             || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 962                 && ctx->op.sig.sigprovctx != NULL)
 963             || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 964                 && ctx->op.ciph.ciphprovctx != NULL))
 965         return legacy_ctrl_str_to_param(ctx, name, value);
 966
 967     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
 968         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 969         return -2;
 970     }
 971     if (strcmp(name, "digest") == 0)
 972         return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
 973                                value);
 974     return ctx->pmeth->ctrl_str(ctx, name, value);
 975 }
 976
 977 /* Utility functions to send a string of hex string to a ctrl */
 978
 979 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
 980 {
 981     size_t len;
 982
 983     len = strlen(str);
 984     if (len > INT_MAX)
 985         return -1;
 986     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
 987 }
 988
 989 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
 990 {
 991     unsigned char *bin;
 992     long binlen;
 993     int rv = -1;
 994
 995     bin = OPENSSL_hexstr2buf(hex, &binlen);
 996     if (bin == NULL)
 997         return 0;
 998     if (binlen <= INT_MAX)
 999         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
1000     OPENSSL_free(bin);
1001     return rv;
1002 }
1003
1004 /* Pass a message digest to a ctrl */
1005 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
1006 {
1007     const EVP_MD *m;
1008
1009     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
1010         EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
1011         return 0;
1012     }
1013     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
1014 }
1015
1016 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
1017 {
1018     return ctx->operation;
1019 }
1020
1021 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
1022 {
1023     ctx->keygen_info = dat;
1024     ctx->keygen_info_count = datlen;
1025 }
1026
1027 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
1028 {
1029     ctx->data = data;
1030 }
1031
1032 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
1033 {
1034     return ctx->data;
1035 }
1036
1037 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
1038 {
1039     return ctx->pkey;
1040 }
1041
1042 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
1043 {
1044     return ctx->peerkey;
1045 }
1046
1047 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
1048 {
1049     ctx->app_data = data;
1050 }
1051
1052 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
1053 {
1054     return ctx->app_data;
1055 }
1056
1057 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1058                             int (*init) (EVP_PKEY_CTX *ctx))
1059 {
1060     pmeth->init = init;
1061 }
1062
1063 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1064                             int (*copy) (EVP_PKEY_CTX *dst,
1065                                          const EVP_PKEY_CTX *src))
1066 {
1067     pmeth->copy = copy;
1068 }
1069
1070 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1071                                void (*cleanup) (EVP_PKEY_CTX *ctx))
1072 {
1073     pmeth->cleanup = cleanup;
1074 }
1075
1076 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1077                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1078                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
1079                                                  EVP_PKEY *pkey))
1080 {
1081     pmeth->paramgen_init = paramgen_init;
1082     pmeth->paramgen = paramgen;
1083 }
1084
1085 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1086                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
1087                               int (*keygen) (EVP_PKEY_CTX *ctx,
1088                                              EVP_PKEY *pkey))
1089 {
1090     pmeth->keygen_init = keygen_init;
1091     pmeth->keygen = keygen;
1092 }
1093
1094 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1095                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1096                             int (*sign) (EVP_PKEY_CTX *ctx,
1097                                          unsigned char *sig, size_t *siglen,
1098                                          const unsigned char *tbs,
1099                                          size_t tbslen))
1100 {
1101     pmeth->sign_init = sign_init;
1102     pmeth->sign = sign;
1103 }
1104
1105 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1106                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1107                               int (*verify) (EVP_PKEY_CTX *ctx,
1108                                              const unsigned char *sig,
1109                                              size_t siglen,
1110                                              const unsigned char *tbs,
1111                                              size_t tbslen))
1112 {
1113     pmeth->verify_init = verify_init;
1114     pmeth->verify = verify;
1115 }
1116
1117 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1118                                       int (*verify_recover_init) (EVP_PKEY_CTX
1119                                                                   *ctx),
1120                                       int (*verify_recover) (EVP_PKEY_CTX
1121                                                              *ctx,
1122                                                              unsigned char
1123                                                              *sig,
1124                                                              size_t *siglen,
1125                                                              const unsigned
1126                                                              char *tbs,
1127                                                              size_t tbslen))
1128 {
1129     pmeth->verify_recover_init = verify_recover_init;
1130     pmeth->verify_recover = verify_recover;
1131 }
1132
1133 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1134                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1135                                                     EVP_MD_CTX *mctx),
1136                                int (*signctx) (EVP_PKEY_CTX *ctx,
1137                                                unsigned char *sig,
1138                                                size_t *siglen,
1139                                                EVP_MD_CTX *mctx))
1140 {
1141     pmeth->signctx_init = signctx_init;
1142     pmeth->signctx = signctx;
1143 }
1144
1145 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1146                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1147                                                         EVP_MD_CTX *mctx),
1148                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1149                                                    const unsigned char *sig,
1150                                                    int siglen,
1151                                                    EVP_MD_CTX *mctx))
1152 {
1153     pmeth->verifyctx_init = verifyctx_init;
1154     pmeth->verifyctx = verifyctx;
1155 }
1156
1157 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1158                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1159                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1160                                                  unsigned char *out,
1161                                                  size_t *outlen,
1162                                                  const unsigned char *in,
1163                                                  size_t inlen))
1164 {
1165     pmeth->encrypt_init = encrypt_init;
1166     pmeth->encrypt = encryptfn;
1167 }
1168
1169 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1170                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1171                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1172                                                unsigned char *out,
1173                                                size_t *outlen,
1174                                                const unsigned char *in,
1175                                                size_t inlen))
1176 {
1177     pmeth->decrypt_init = decrypt_init;
1178     pmeth->decrypt = decrypt;
1179 }
1180
1181 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1182                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1183                               int (*derive) (EVP_PKEY_CTX *ctx,
1184                                              unsigned char *key,
1185                                              size_t *keylen))
1186 {
1187     pmeth->derive_init = derive_init;
1188     pmeth->derive = derive;
1189 }
1190
1191 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1192                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1193                                          void *p2),
1194                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1195                                              const char *type,
1196                                              const char *value))
1197 {
1198     pmeth->ctrl = ctrl;
1199     pmeth->ctrl_str = ctrl_str;
1200 }
1201
1202 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1203     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1204                        const unsigned char *tbs, size_t tbslen))
1205 {
1206     pmeth->digestsign = digestsign;
1207 }
1208
1209 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1210     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1211                          size_t siglen, const unsigned char *tbs,
1212                          size_t tbslen))
1213 {
1214     pmeth->digestverify = digestverify;
1215 }
1216
1217 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1218                              int (*check) (EVP_PKEY *pkey))
1219 {
1220     pmeth->check = check;
1221 }
1222
1223 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1224                                     int (*check) (EVP_PKEY *pkey))
1225 {
1226     pmeth->public_check = check;
1227 }
1228
1229 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1230                                    int (*check) (EVP_PKEY *pkey))
1231 {
1232     pmeth->param_check = check;
1233 }
1234
1235 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1236                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
1237                                                            EVP_MD_CTX *mctx))
1238 {
1239     pmeth->digest_custom = digest_custom;
1240 }
1241
1242 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1243                             int (**pinit) (EVP_PKEY_CTX *ctx))
1244 {
1245     *pinit = pmeth->init;
1246 }
1247
1248 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
1249                             int (**pcopy) (EVP_PKEY_CTX *dst,
1250                                            const EVP_PKEY_CTX *src))
1251 {
1252     *pcopy = pmeth->copy;
1253 }
1254
1255 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
1256                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
1257 {
1258     *pcleanup = pmeth->cleanup;
1259 }
1260
1261 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
1262                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
1263                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
1264                                                    EVP_PKEY *pkey))
1265 {
1266     if (pparamgen_init)
1267         *pparamgen_init = pmeth->paramgen_init;
1268     if (pparamgen)
1269         *pparamgen = pmeth->paramgen;
1270 }
1271
1272 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
1273                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
1274                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
1275                                                EVP_PKEY *pkey))
1276 {
1277     if (pkeygen_init)
1278         *pkeygen_init = pmeth->keygen_init;
1279     if (pkeygen)
1280         *pkeygen = pmeth->keygen;
1281 }
1282
1283 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
1284                             int (**psign_init) (EVP_PKEY_CTX *ctx),
1285                             int (**psign) (EVP_PKEY_CTX *ctx,
1286                                            unsigned char *sig, size_t *siglen,
1287                                            const unsigned char *tbs,
1288                                            size_t tbslen))
1289 {
1290     if (psign_init)
1291         *psign_init = pmeth->sign_init;
1292     if (psign)
1293         *psign = pmeth->sign;
1294 }
1295
1296 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
1297                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
1298                               int (**pverify) (EVP_PKEY_CTX *ctx,
1299                                                const unsigned char *sig,
1300                                                size_t siglen,
1301                                                const unsigned char *tbs,
1302                                                size_t tbslen))
1303 {
1304     if (pverify_init)
1305         *pverify_init = pmeth->verify_init;
1306     if (pverify)
1307         *pverify = pmeth->verify;
1308 }
1309
1310 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
1311                                       int (**pverify_recover_init) (EVP_PKEY_CTX
1312                                                                     *ctx),
1313                                       int (**pverify_recover) (EVP_PKEY_CTX
1314                                                                *ctx,
1315                                                                unsigned char
1316                                                                *sig,
1317                                                                size_t *siglen,
1318                                                                const unsigned
1319                                                                char *tbs,
1320                                                                size_t tbslen))
1321 {
1322     if (pverify_recover_init)
1323         *pverify_recover_init = pmeth->verify_recover_init;
1324     if (pverify_recover)
1325         *pverify_recover = pmeth->verify_recover;
1326 }
1327
1328 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
1329                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
1330                                                       EVP_MD_CTX *mctx),
1331                                int (**psignctx) (EVP_PKEY_CTX *ctx,
1332                                                  unsigned char *sig,
1333                                                  size_t *siglen,
1334                                                  EVP_MD_CTX *mctx))
1335 {
1336     if (psignctx_init)
1337         *psignctx_init = pmeth->signctx_init;
1338     if (psignctx)
1339         *psignctx = pmeth->signctx;
1340 }
1341
1342 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
1343                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
1344                                                           EVP_MD_CTX *mctx),
1345                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
1346                                                      const unsigned char *sig,
1347                                                      int siglen,
1348                                                      EVP_MD_CTX *mctx))
1349 {
1350     if (pverifyctx_init)
1351         *pverifyctx_init = pmeth->verifyctx_init;
1352     if (pverifyctx)
1353         *pverifyctx = pmeth->verifyctx;
1354 }
1355
1356 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
1357                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
1358                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
1359                                                    unsigned char *out,
1360                                                    size_t *outlen,
1361                                                    const unsigned char *in,
1362                                                    size_t inlen))
1363 {
1364     if (pencrypt_init)
1365         *pencrypt_init = pmeth->encrypt_init;
1366     if (pencryptfn)
1367         *pencryptfn = pmeth->encrypt;
1368 }
1369
1370 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
1371                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
1372                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
1373                                                  unsigned char *out,
1374                                                  size_t *outlen,
1375                                                  const unsigned char *in,
1376                                                  size_t inlen))
1377 {
1378     if (pdecrypt_init)
1379         *pdecrypt_init = pmeth->decrypt_init;
1380     if (pdecrypt)
1381         *pdecrypt = pmeth->decrypt;
1382 }
1383
1384 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
1385                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
1386                               int (**pderive) (EVP_PKEY_CTX *ctx,
1387                                                unsigned char *key,
1388                                                size_t *keylen))
1389 {
1390     if (pderive_init)
1391         *pderive_init = pmeth->derive_init;
1392     if (pderive)
1393         *pderive = pmeth->derive;
1394 }
1395
1396 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
1397                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1398                                            void *p2),
1399                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
1400                                                const char *type,
1401                                                const char *value))
1402 {
1403     if (pctrl)
1404         *pctrl = pmeth->ctrl;
1405     if (pctrl_str)
1406         *pctrl_str = pmeth->ctrl_str;
1407 }
1408
1409 void EVP_PKEY_meth_get_digestsign(EVP_PKEY_METHOD *pmeth,
1410     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1411                         const unsigned char *tbs, size_t tbslen))
1412 {
1413     if (digestsign)
1414         *digestsign = pmeth->digestsign;
1415 }
1416
1417 void EVP_PKEY_meth_get_digestverify(EVP_PKEY_METHOD *pmeth,
1418     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1419                           size_t siglen, const unsigned char *tbs,
1420                           size_t tbslen))
1421 {
1422     if (digestverify)
1423         *digestverify = pmeth->digestverify;
1424 }
1425
1426 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
1427                              int (**pcheck) (EVP_PKEY *pkey))
1428 {
1429     if (pcheck != NULL)
1430         *pcheck = pmeth->check;
1431 }
1432
1433 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
1434                                     int (**pcheck) (EVP_PKEY *pkey))
1435 {
1436     if (pcheck != NULL)
1437         *pcheck = pmeth->public_check;
1438 }
1439
1440 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
1441                                    int (**pcheck) (EVP_PKEY *pkey))
1442 {
1443     if (pcheck != NULL)
1444         *pcheck = pmeth->param_check;
1445 }
1446
1447 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
1448                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
1449                                                              EVP_MD_CTX *mctx))
1450 {
1451     if (pdigest_custom != NULL)
1452         *pdigest_custom = pmeth->digest_custom;
1453 }
1454
1455 #endif /* FIPS_MODE */