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 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <openssl/engine.h>
  14 #include <openssl/evp.h>
  15 #include <openssl/x509v3.h>
  16 #include <openssl/core_names.h>
  17 #include <openssl/dh.h>
  18 #include <openssl/rsa.h>
  19 #include "internal/cryptlib.h"
  20 #include "crypto/asn1.h"
  21 #include "crypto/evp.h"
  22 #include "internal/numbers.h"
  23 #include "internal/provider.h"
  24 #include "evp_local.h"
  25
  26 #ifndef FIPS_MODE
  27
  28 typedef const EVP_PKEY_METHOD *(*pmeth_fn)(void);
  29 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
  30
  31 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
  32
  33 /* This array needs to be in order of NIDs */
  34 static pmeth_fn standard_methods[] = {
  35 # ifndef OPENSSL_NO_RSA
  36     rsa_pkey_method,
  37 # endif
  38 # ifndef OPENSSL_NO_DH
  39     dh_pkey_method,
  40 # endif
  41 # ifndef OPENSSL_NO_DSA
  42     dsa_pkey_method,
  43 # endif
  44 # ifndef OPENSSL_NO_EC
  45     ec_pkey_method,
  46 # endif
  47     hmac_pkey_method,
  48 # ifndef OPENSSL_NO_CMAC
  49     cmac_pkey_method,
  50 # endif
  51 # ifndef OPENSSL_NO_RSA
  52     rsa_pss_pkey_method,
  53 # endif
  54 # ifndef OPENSSL_NO_DH
  55     dhx_pkey_method,
  56 # endif
  57 # ifndef OPENSSL_NO_SCRYPT
  58     scrypt_pkey_method,
  59 # endif
  60     tls1_prf_pkey_method,
  61 # ifndef OPENSSL_NO_EC
  62     ecx25519_pkey_method,
  63     ecx448_pkey_method,
  64 # endif
  65     hkdf_pkey_method,
  66 # ifndef OPENSSL_NO_POLY1305
  67     poly1305_pkey_method,
  68 # endif
  69 # ifndef OPENSSL_NO_SIPHASH
  70     siphash_pkey_method,
  71 # endif
  72 # ifndef OPENSSL_NO_EC
  73     ed25519_pkey_method,
  74     ed448_pkey_method,
  75 # endif
  76 # ifndef OPENSSL_NO_SM2
  77     sm2_pkey_method,
  78 # endif
  79 };
  80
  81 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  82
  83 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
  84 {
  85     return ((*a)->pkey_id - ((**b)())->pkey_id);
  86 }
  87
  88 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  89
  90 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  91                      const EVP_PKEY_METHOD *const *b)
  92 {
  93     return ((*a)->pkey_id - (*b)->pkey_id);
  94 }
  95
  96 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
  97 {
  98     pmeth_fn *ret;
  99     EVP_PKEY_METHOD tmp;
 100     const EVP_PKEY_METHOD *t = &tmp;
 101
 102     tmp.pkey_id = type;
 103     if (app_pkey_methods) {
 104         int idx;
 105         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
 106         if (idx >= 0)
 107             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 108     }
 109     ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
 110                                  sizeof(standard_methods) /
 111                                  sizeof(pmeth_fn));
 112     if (ret == NULL || *ret == NULL)
 113         return NULL;
 114     return (**ret)();
 115 }
 116
 117 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 118 {
 119     EVP_PKEY_METHOD *pmeth;
 120
 121     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 122     if (pmeth == NULL) {
 123         EVPerr(EVP_F_EVP_PKEY_METH_NEW, ERR_R_MALLOC_FAILURE);
 124         return NULL;
 125     }
 126
 127     pmeth->pkey_id = id;
 128     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 129     return pmeth;
 130 }
 131 #endif /* FIPS_MODE */
 132
 133 static EVP_PKEY_CTX *int_ctx_new(OPENSSL_CTX *libctx,
 134                                  EVP_PKEY *pkey, ENGINE *e,
 135                                  const char *name, const char *propquery,
 136                                  int id)
 137
 138 {
 139     EVP_PKEY_CTX *ret;
 140     const EVP_PKEY_METHOD *pmeth = NULL;
 141
 142     /*
 143      * When using providers, the context is bound to the algo implementation
 144      * later.
 145      */
 146     if (pkey == NULL && e == NULL && id == -1)
 147         goto common;
 148
 149     /*
 150      * If the key doesn't contain anything legacy, then it must be provided,
 151      * so we extract the necessary information and use that.
 152      */
 153     if (pkey != NULL && pkey->ameth == NULL) {
 154         /* If we have an engine, something went wrong somewhere... */
 155         if (!ossl_assert(e == NULL))
 156             return NULL;
 157         name = evp_first_name(pkey->pkeys[0].keymgmt->prov,
 158                               pkey->pkeys[0].keymgmt->name_id);
 159         /*
 160          * TODO: I wonder if the EVP_PKEY should have the name and propquery
 161          * that were used when building it....  /RL
 162          */
 163         goto common;
 164     }
 165 #ifndef FIPS_MODE
 166     /* TODO(3.0) Legacy code should be removed when all is provider based */
 167     /* BEGIN legacy */
 168     if (id == -1) {
 169         if (pkey == NULL)
 170             return NULL;
 171         id = pkey->type;
 172     }
 173
 174     /*
 175      * Here, we extract what information we can for the purpose of
 176      * supporting usage with implementations from providers, to make
 177      * for a smooth transition from legacy stuff to provider based stuff.
 178      *
 179      * If an engine is given, this is entirely legacy, and we should not
 180      * pretend anything else, so we only set the name when no engine is
 181      * given.  If both are already given, someone made a mistake, and
 182      * since that can only happen internally, it's safe to make an
 183      * assertion.
 184      */
 185     if (!ossl_assert(e == NULL || name == NULL))
 186         return NULL;
 187     if (e == NULL)
 188         name = OBJ_nid2sn(id);
 189
 190 # ifndef OPENSSL_NO_ENGINE
 191     if (e == NULL && pkey != NULL)
 192         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 193     /* Try to find an ENGINE which implements this method */
 194     if (e) {
 195         if (!ENGINE_init(e)) {
 196             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
 197             return NULL;
 198         }
 199     } else {
 200         e = ENGINE_get_pkey_meth_engine(id);
 201     }
 202
 203     /*
 204      * If an ENGINE handled this method look it up. Otherwise use internal
 205      * tables.
 206      */
 207     if (e)
 208         pmeth = ENGINE_get_pkey_meth(e, id);
 209     else
 210 # endif
 211         pmeth = EVP_PKEY_meth_find(id);
 212
 213     if (pmeth == NULL) {
 214 # ifndef OPENSSL_NO_ENGINE
 215         ENGINE_finish(e);
 216 # endif
 217         EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
 218         return NULL;
 219     }
 220     /* END legacy */
 221 #endif /* FIPS_MODE */
 222  common:
 223     ret = OPENSSL_zalloc(sizeof(*ret));
 224     if (ret == NULL) {
 225 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
 226         ENGINE_finish(e);
 227 #endif
 228         EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
 229         return NULL;
 230     }
 231     ret->libctx = libctx;
 232     ret->keytype = name;
 233     ret->propquery = propquery;
 234     ret->engine = e;
 235     ret->pmeth = pmeth;
 236     ret->operation = EVP_PKEY_OP_UNDEFINED;
 237     ret->pkey = pkey;
 238     if (pkey != NULL)
 239         EVP_PKEY_up_ref(pkey);
 240
 241     if (pmeth != NULL && pmeth->init != NULL) {
 242         if (pmeth->init(ret) <= 0) {
 243             ret->pmeth = NULL;
 244             EVP_PKEY_CTX_free(ret);
 245             return NULL;
 246         }
 247     }
 248
 249     return ret;
 250 }
 251
 252 /*- All methods below can also be used in FIPS_MODE */
 253
 254 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OPENSSL_CTX *libctx,
 255                                          const char *name,
 256                                          const char *propquery)
 257 {
 258     return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
 259 }
 260
 261 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OPENSSL_CTX *libctx, EVP_PKEY *pkey,
 262                                          const char *propquery)
 263 {
 264     return int_ctx_new(libctx, pkey, NULL, NULL, propquery, -1);
 265 }
 266
 267 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
 268 {
 269     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 270         if (ctx->op.sig.sigprovctx != NULL && ctx->op.sig.signature != NULL)
 271             ctx->op.sig.signature->freectx(ctx->op.sig.sigprovctx);
 272         EVP_SIGNATURE_free(ctx->op.sig.signature);
 273         ctx->op.sig.sigprovctx = NULL;
 274         ctx->op.sig.signature = NULL;
 275     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 276         if (ctx->op.kex.exchprovctx != NULL && ctx->op.kex.exchange != NULL)
 277             ctx->op.kex.exchange->freectx(ctx->op.kex.exchprovctx);
 278         EVP_KEYEXCH_free(ctx->op.kex.exchange);
 279         ctx->op.kex.exchprovctx = NULL;
 280         ctx->op.kex.exchange = NULL;
 281     }
 282 /* TODO(3.0): add dependancies and uncomment this when available for fips mode */
 283 #ifndef FIPS_MODE
 284     else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
 285         if (ctx->op.ciph.ciphprovctx != NULL && ctx->op.ciph.cipher != NULL)
 286             ctx->op.ciph.cipher->freectx(ctx->op.ciph.ciphprovctx);
 287         EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
 288         ctx->op.ciph.ciphprovctx = NULL;
 289         ctx->op.ciph.cipher = NULL;
 290     }
 291 #endif
 292 }
 293
 294 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 295 {
 296     if (ctx == NULL)
 297         return;
 298     if (ctx->pmeth && ctx->pmeth->cleanup)
 299         ctx->pmeth->cleanup(ctx);
 300
 301     evp_pkey_ctx_free_old_ops(ctx);
 302     EVP_KEYMGMT_free(ctx->keymgmt);
 303
 304     EVP_PKEY_free(ctx->pkey);
 305     EVP_PKEY_free(ctx->peerkey);
 306 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
 307     ENGINE_finish(ctx->engine);
 308 #endif
 309     OPENSSL_free(ctx);
 310 }
 311
 312 #ifndef FIPS_MODE
 313
 314 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 315                              const EVP_PKEY_METHOD *meth)
 316 {
 317     if (ppkey_id)
 318         *ppkey_id = meth->pkey_id;
 319     if (pflags)
 320         *pflags = meth->flags;
 321 }
 322
 323 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 324 {
 325
 326     dst->init = src->init;
 327     dst->copy = src->copy;
 328     dst->cleanup = src->cleanup;
 329
 330     dst->paramgen_init = src->paramgen_init;
 331     dst->paramgen = src->paramgen;
 332
 333     dst->keygen_init = src->keygen_init;
 334     dst->keygen = src->keygen;
 335
 336     dst->sign_init = src->sign_init;
 337     dst->sign = src->sign;
 338
 339     dst->verify_init = src->verify_init;
 340     dst->verify = src->verify;
 341
 342     dst->verify_recover_init = src->verify_recover_init;
 343     dst->verify_recover = src->verify_recover;
 344
 345     dst->signctx_init = src->signctx_init;
 346     dst->signctx = src->signctx;
 347
 348     dst->verifyctx_init = src->verifyctx_init;
 349     dst->verifyctx = src->verifyctx;
 350
 351     dst->encrypt_init = src->encrypt_init;
 352     dst->encrypt = src->encrypt;
 353
 354     dst->decrypt_init = src->decrypt_init;
 355     dst->decrypt = src->decrypt;
 356
 357     dst->derive_init = src->derive_init;
 358     dst->derive = src->derive;
 359
 360     dst->ctrl = src->ctrl;
 361     dst->ctrl_str = src->ctrl_str;
 362
 363     dst->check = src->check;
 364 }
 365
 366 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 367 {
 368     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 369         OPENSSL_free(pmeth);
 370 }
 371
 372 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 373 {
 374     return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
 375 }
 376
 377 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 378 {
 379     return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
 380 }
 381
 382
 383 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 384 {
 385     EVP_PKEY_CTX *rctx;
 386
 387     if (((pctx->pmeth == NULL) || (pctx->pmeth->copy == NULL))
 388             && ((EVP_PKEY_CTX_IS_DERIVE_OP(pctx)
 389                  && pctx->op.kex.exchprovctx == NULL)
 390                 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)
 391                     && pctx->op.sig.sigprovctx == NULL)))
 392         return NULL;
 393 # ifndef OPENSSL_NO_ENGINE
 394     /* Make sure it's safe to copy a pkey context using an ENGINE */
 395     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 396         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
 397         return 0;
 398     }
 399 # endif
 400     rctx = OPENSSL_zalloc(sizeof(*rctx));
 401     if (rctx == NULL) {
 402         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_MALLOC_FAILURE);
 403         return NULL;
 404     }
 405
 406     if (pctx->pkey != NULL)
 407         EVP_PKEY_up_ref(pctx->pkey);
 408     rctx->pkey = pctx->pkey;
 409     rctx->operation = pctx->operation;
 410     rctx->libctx = pctx->libctx;
 411     rctx->keytype = pctx->keytype;
 412     rctx->propquery = pctx->propquery;
 413
 414     if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
 415         if (pctx->op.kex.exchange != NULL) {
 416             rctx->op.kex.exchange = pctx->op.kex.exchange;
 417             if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange)) {
 418                 OPENSSL_free(rctx);
 419                 return NULL;
 420             }
 421         }
 422         if (pctx->op.kex.exchprovctx != NULL) {
 423             if (!ossl_assert(pctx->op.kex.exchange != NULL))
 424                 return NULL;
 425             rctx->op.kex.exchprovctx
 426                 = pctx->op.kex.exchange->dupctx(pctx->op.kex.exchprovctx);
 427             if (rctx->op.kex.exchprovctx == NULL) {
 428                 EVP_KEYEXCH_free(rctx->op.kex.exchange);
 429                 OPENSSL_free(rctx);
 430                 return NULL;
 431             }
 432             return rctx;
 433         }
 434     } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
 435         if (pctx->op.sig.signature != NULL) {
 436             rctx->op.sig.signature = pctx->op.sig.signature;
 437             if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature)) {
 438                 OPENSSL_free(rctx);
 439                 return NULL;
 440             }
 441         }
 442         if (pctx->op.sig.sigprovctx != NULL) {
 443             if (!ossl_assert(pctx->op.sig.signature != NULL))
 444                 return NULL;
 445             rctx->op.sig.sigprovctx
 446                 = pctx->op.sig.signature->dupctx(pctx->op.sig.sigprovctx);
 447             if (rctx->op.sig.sigprovctx == NULL) {
 448                 EVP_SIGNATURE_free(rctx->op.sig.signature);
 449                 OPENSSL_free(rctx);
 450                 return NULL;
 451             }
 452             return rctx;
 453         }
 454     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
 455         if (pctx->op.ciph.cipher != NULL) {
 456             rctx->op.ciph.cipher = pctx->op.ciph.cipher;
 457             if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher)) {
 458                 OPENSSL_free(rctx);
 459                 return NULL;
 460             }
 461         }
 462         if (pctx->op.ciph.ciphprovctx != NULL) {
 463             if (!ossl_assert(pctx->op.ciph.cipher != NULL))
 464                 return NULL;
 465             rctx->op.ciph.ciphprovctx
 466                 = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.ciphprovctx);
 467             if (rctx->op.ciph.ciphprovctx == NULL) {
 468                 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
 469                 OPENSSL_free(rctx);
 470                 return NULL;
 471             }
 472             return rctx;
 473         }
 474     }
 475
 476     rctx->pmeth = pctx->pmeth;
 477 # ifndef OPENSSL_NO_ENGINE
 478     rctx->engine = pctx->engine;
 479 # endif
 480
 481     if (pctx->peerkey)
 482         EVP_PKEY_up_ref(pctx->peerkey);
 483     rctx->peerkey = pctx->peerkey;
 484
 485     if (pctx->pmeth->copy(rctx, pctx) > 0)
 486         return rctx;
 487
 488     rctx->pmeth = NULL;
 489     EVP_PKEY_CTX_free(rctx);
 490     return NULL;
 491
 492 }
 493
 494 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 495 {
 496     if (app_pkey_methods == NULL) {
 497         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 498         if (app_pkey_methods == NULL){
 499             EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 500             return 0;
 501         }
 502     }
 503     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 504         EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 505         return 0;
 506     }
 507     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 508     return 1;
 509 }
 510
 511 void evp_app_cleanup_int(void)
 512 {
 513     if (app_pkey_methods != NULL)
 514         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 515 }
 516
 517 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 518 {
 519     const EVP_PKEY_METHOD *ret;
 520
 521     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 522
 523     return ret == NULL ? 0 : 1;
 524 }
 525
 526 size_t EVP_PKEY_meth_get_count(void)
 527 {
 528     size_t rv = OSSL_NELEM(standard_methods);
 529
 530     if (app_pkey_methods)
 531         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 532     return rv;
 533 }
 534
 535 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 536 {
 537     if (idx < OSSL_NELEM(standard_methods))
 538         return (standard_methods[idx])();
 539     if (app_pkey_methods == NULL)
 540         return NULL;
 541     idx -= OSSL_NELEM(standard_methods);
 542     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 543         return NULL;
 544     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 545 }
 546 #endif
 547
 548 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 549 {
 550     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 551             && ctx->op.kex.exchprovctx != NULL
 552             && ctx->op.kex.exchange != NULL
 553             && ctx->op.kex.exchange->set_ctx_params != NULL)
 554         return ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.exchprovctx,
 555                                                     params);
 556     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 557             && ctx->op.sig.sigprovctx != NULL
 558             && ctx->op.sig.signature != NULL
 559             && ctx->op.sig.signature->set_ctx_params != NULL)
 560         return ctx->op.sig.signature->set_ctx_params(ctx->op.sig.sigprovctx,
 561                                                      params);
 562     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 563             && ctx->op.ciph.ciphprovctx != NULL
 564             && ctx->op.ciph.cipher != NULL
 565             && ctx->op.ciph.cipher->set_ctx_params != NULL)
 566         return ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.ciphprovctx,
 567                                                      params);
 568     return 0;
 569 }
 570
 571 #ifndef FIPS_MODE
 572 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 573 {
 574     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 575             && ctx->op.sig.sigprovctx != NULL
 576             && ctx->op.sig.signature != NULL
 577             && ctx->op.sig.signature->get_ctx_params != NULL)
 578         return ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx,
 579                                                      params);
 580     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 581             && ctx->op.ciph.ciphprovctx != NULL
 582             && ctx->op.ciph.cipher != NULL
 583             && ctx->op.ciph.cipher->get_ctx_params != NULL)
 584         return ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.ciphprovctx,
 585                                                    params);
 586     return 0;
 587 }
 588
 589 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx)
 590 {
 591     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 592             && ctx->op.sig.signature != NULL
 593             && ctx->op.sig.signature->gettable_ctx_params != NULL)
 594         return ctx->op.sig.signature->gettable_ctx_params();
 595
 596     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 597             && ctx->op.ciph.cipher != NULL
 598             && ctx->op.ciph.cipher->gettable_ctx_params != NULL)
 599         return ctx->op.ciph.cipher->gettable_ctx_params();
 600
 601     return NULL;
 602 }
 603
 604 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx)
 605 {
 606     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 607             && ctx->op.kex.exchange != NULL
 608             && ctx->op.kex.exchange->settable_ctx_params != NULL)
 609         return ctx->op.kex.exchange->settable_ctx_params();
 610     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 611             && ctx->op.sig.signature != NULL
 612             && ctx->op.sig.signature->settable_ctx_params != NULL)
 613         return ctx->op.sig.signature->settable_ctx_params();
 614     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 615             && ctx->op.ciph.cipher != NULL
 616             && ctx->op.ciph.cipher->settable_ctx_params != NULL)
 617         return ctx->op.ciph.cipher->settable_ctx_params();
 618
 619     return NULL;
 620 }
 621
 622 # ifndef OPENSSL_NO_DH
 623 int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad)
 624 {
 625     OSSL_PARAM dh_pad_params[2];
 626     unsigned int upad = pad;
 627
 628     /* We use EVP_PKEY_CTX_ctrl return values */
 629     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 630         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 631         return -2;
 632     }
 633
 634     /* TODO(3.0): Remove this eventually when no more legacy */
 635     if (ctx->op.kex.exchprovctx == NULL)
 636         return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_DERIVE,
 637                                  EVP_PKEY_CTRL_DH_PAD, pad, NULL);
 638
 639     dh_pad_params[0] = OSSL_PARAM_construct_uint(OSSL_EXCHANGE_PARAM_PAD, &upad);
 640     dh_pad_params[1] = OSSL_PARAM_construct_end();
 641
 642     return EVP_PKEY_CTX_set_params(ctx, dh_pad_params);
 643 }
 644 # endif
 645
 646 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
 647 {
 648     OSSL_PARAM sig_md_params[3], *p = sig_md_params;
 649     /* 80 should be big enough */
 650     char name[80] = "";
 651     const EVP_MD *tmp;
 652
 653     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 654         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 655         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 656         return -2;
 657     }
 658
 659     /* TODO(3.0): Remove this eventually when no more legacy */
 660     if (ctx->op.sig.sigprovctx == NULL)
 661         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 662                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
 663
 664     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 665                                             name,
 666                                             sizeof(name));
 667     *p++ = OSSL_PARAM_construct_end();
 668
 669     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
 670         return 0;
 671
 672     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
 673     if (tmp == NULL)
 674         return 0;
 675
 676     *md = tmp;
 677
 678     return 1;
 679 }
 680
 681 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 682 {
 683     OSSL_PARAM sig_md_params[3], *p = sig_md_params;
 684     size_t mdsize;
 685     const char *name;
 686
 687     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 688         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 689         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 690         return -2;
 691     }
 692
 693     /* TODO(3.0): Remove this eventually when no more legacy */
 694     if (ctx->op.sig.sigprovctx == NULL)
 695         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 696                                  EVP_PKEY_CTRL_MD, 0, (void *)(md));
 697
 698     if (md == NULL) {
 699         name = "";
 700         mdsize = 0;
 701     } else {
 702         mdsize = EVP_MD_size(md);
 703         name = EVP_MD_name(md);
 704     }
 705
 706     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 707                                             /*
 708                                              * Cast away the const. This is read
 709                                              * only so should be safe
 710                                              */
 711                                             (char *)name,
 712                                             strlen(name) + 1);
 713     *p++ = OSSL_PARAM_construct_size_t(OSSL_SIGNATURE_PARAM_DIGEST_SIZE,
 714                                        &mdsize);
 715     *p++ = OSSL_PARAM_construct_end();
 716
 717     return EVP_PKEY_CTX_set_params(ctx, sig_md_params);
 718 }
 719
 720 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
 721                                 int cmd, int p1, void *p2)
 722 {
 723     switch (cmd) {
 724 # ifndef OPENSSL_NO_DH
 725     case EVP_PKEY_CTRL_DH_PAD:
 726         return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
 727 # endif
 728     case EVP_PKEY_CTRL_MD:
 729         return EVP_PKEY_CTX_set_signature_md(ctx, p2);
 730     case EVP_PKEY_CTRL_GET_MD:
 731         return EVP_PKEY_CTX_get_signature_md(ctx, p2);
 732     case EVP_PKEY_CTRL_RSA_PADDING:
 733         return EVP_PKEY_CTX_set_rsa_padding(ctx, p1);
 734     case EVP_PKEY_CTRL_GET_RSA_PADDING:
 735         return EVP_PKEY_CTX_get_rsa_padding(ctx, p2);
 736     case EVP_PKEY_CTRL_RSA_OAEP_MD:
 737         return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
 738     case EVP_PKEY_CTRL_GET_RSA_OAEP_MD:
 739         return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
 740     case EVP_PKEY_CTRL_RSA_MGF1_MD:
 741         return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
 742     case EVP_PKEY_CTRL_GET_RSA_MGF1_MD:
 743         return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
 744     case EVP_PKEY_CTRL_RSA_OAEP_LABEL:
 745         return EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, p2, p1);
 746     case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL:
 747         return EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, (unsigned char **)p2);
 748     case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
 749     case EVP_PKEY_CTRL_PKCS7_DECRYPT:
 750 # ifndef OPENSSL_NO_CMS
 751     case EVP_PKEY_CTRL_CMS_DECRYPT:
 752     case EVP_PKEY_CTRL_CMS_ENCRYPT:
 753 # endif
 754         if (ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS)
 755             return 1;
 756         ERR_raise(ERR_LIB_EVP,
 757                   EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 758         return -2;
 759     }
 760     return 0;
 761 }
 762
 763 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
 764                       int cmd, int p1, void *p2)
 765 {
 766     int ret;
 767
 768     if (ctx == NULL) {
 769         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 770         return -2;
 771     }
 772
 773     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
 774             || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 775                 && ctx->op.sig.sigprovctx != NULL)
 776             || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 777                 && ctx->op.ciph.ciphprovctx != NULL))
 778         return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
 779
 780     if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
 781         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 782         return -2;
 783     }
 784     if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
 785         return -1;
 786
 787     /* Skip the operation checks since this is called in a very early stage */
 788     if (ctx->pmeth->digest_custom != NULL)
 789         goto doit;
 790
 791     if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
 792         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
 793         return -1;
 794     }
 795
 796     if ((optype != -1) && !(ctx->operation & optype)) {
 797         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
 798         return -1;
 799     }
 800
 801  doit:
 802     ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
 803
 804     if (ret == -2)
 805         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 806
 807     return ret;
 808 }
 809
 810 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
 811                              int cmd, uint64_t value)
 812 {
 813     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
 814 }
 815
 816 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
 817                                     const char *value)
 818 {
 819 # ifndef OPENSSL_NO_DH
 820     if (strcmp(name, "dh_pad") == 0) {
 821         int pad;
 822
 823         pad = atoi(value);
 824         return EVP_PKEY_CTX_set_dh_pad(ctx, pad);
 825     }
 826 # endif
 827     if (strcmp(name, "digest") == 0) {
 828         int ret;
 829         EVP_MD *md;
 830
 831         if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) || ctx->op.sig.signature == NULL)
 832             return 0;
 833         md = EVP_MD_fetch(ossl_provider_library_context(ctx->op.sig.signature->prov),
 834                           value, NULL);
 835         if (md == NULL)
 836             return 0;
 837         ret = EVP_PKEY_CTX_set_signature_md(ctx, md);
 838         EVP_MD_meth_free(md);
 839         return ret;
 840     }
 841
 842     if (strcmp(name, "rsa_padding_mode") == 0) {
 843         int pm;
 844
 845         if (strcmp(value, "pkcs1") == 0) {
 846             pm = RSA_PKCS1_PADDING;
 847         } else if (strcmp(value, "sslv23") == 0) {
 848             pm = RSA_SSLV23_PADDING;
 849         } else if (strcmp(value, "none") == 0) {
 850             pm = RSA_NO_PADDING;
 851         } else if (strcmp(value, "oeap") == 0) {
 852             pm = RSA_PKCS1_OAEP_PADDING;
 853         } else if (strcmp(value, "oaep") == 0) {
 854             pm = RSA_PKCS1_OAEP_PADDING;
 855         } else if (strcmp(value, "x931") == 0) {
 856             pm = RSA_X931_PADDING;
 857         } else if (strcmp(value, "pss") == 0) {
 858             pm = RSA_PKCS1_PSS_PADDING;
 859         } else {
 860             ERR_raise(ERR_LIB_RSA, RSA_R_UNKNOWN_PADDING_TYPE);
 861             return -2;
 862         }
 863         return EVP_PKEY_CTX_set_rsa_padding(ctx, pm);
 864     }
 865
 866     if (strcmp(name, "rsa_mgf1_md") == 0)
 867         return EVP_PKEY_CTX_set_rsa_mgf1_md_name(ctx, value, NULL);
 868
 869     if (strcmp(name, "rsa_oaep_md") == 0)
 870         return EVP_PKEY_CTX_set_rsa_oaep_md_name(ctx, value, NULL);
 871
 872     if (strcmp(name, "rsa_oaep_label") == 0) {
 873         unsigned char *lab;
 874         long lablen;
 875         int ret;
 876
 877         lab = OPENSSL_hexstr2buf(value, &lablen);
 878         if (lab == NULL)
 879             return 0;
 880         ret = EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, lab, lablen);
 881         if (ret <= 0)
 882             OPENSSL_free(lab);
 883         return ret;
 884     }
 885
 886
 887
 888     return 0;
 889 }
 890
 891 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
 892                           const char *name, const char *value)
 893 {
 894     if (ctx == NULL) {
 895         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 896         return -2;
 897     }
 898
 899     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
 900             || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 901                 && ctx->op.sig.sigprovctx != NULL)
 902             || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 903                 && ctx->op.ciph.ciphprovctx != NULL))
 904         return legacy_ctrl_str_to_param(ctx, name, value);
 905
 906     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
 907         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 908         return -2;
 909     }
 910     if (strcmp(name, "digest") == 0)
 911         return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
 912                                value);
 913     return ctx->pmeth->ctrl_str(ctx, name, value);
 914 }
 915
 916 /* Utility functions to send a string of hex string to a ctrl */
 917
 918 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
 919 {
 920     size_t len;
 921
 922     len = strlen(str);
 923     if (len > INT_MAX)
 924         return -1;
 925     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
 926 }
 927
 928 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
 929 {
 930     unsigned char *bin;
 931     long binlen;
 932     int rv = -1;
 933
 934     bin = OPENSSL_hexstr2buf(hex, &binlen);
 935     if (bin == NULL)
 936         return 0;
 937     if (binlen <= INT_MAX)
 938         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
 939     OPENSSL_free(bin);
 940     return rv;
 941 }
 942
 943 /* Pass a message digest to a ctrl */
 944 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
 945 {
 946     const EVP_MD *m;
 947
 948     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
 949         EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
 950         return 0;
 951     }
 952     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
 953 }
 954
 955 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
 956 {
 957     return ctx->operation;
 958 }
 959
 960 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
 961 {
 962     ctx->keygen_info = dat;
 963     ctx->keygen_info_count = datlen;
 964 }
 965
 966 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
 967 {
 968     ctx->data = data;
 969 }
 970
 971 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
 972 {
 973     return ctx->data;
 974 }
 975
 976 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
 977 {
 978     return ctx->pkey;
 979 }
 980
 981 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
 982 {
 983     return ctx->peerkey;
 984 }
 985
 986 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
 987 {
 988     ctx->app_data = data;
 989 }
 990
 991 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
 992 {
 993     return ctx->app_data;
 994 }
 995
 996 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
 997                             int (*init) (EVP_PKEY_CTX *ctx))
 998 {
 999     pmeth->init = init;
1000 }
1001
1002 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1003                             int (*copy) (EVP_PKEY_CTX *dst,
1004                                          const EVP_PKEY_CTX *src))
1005 {
1006     pmeth->copy = copy;
1007 }
1008
1009 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1010                                void (*cleanup) (EVP_PKEY_CTX *ctx))
1011 {
1012     pmeth->cleanup = cleanup;
1013 }
1014
1015 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1016                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1017                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
1018                                                  EVP_PKEY *pkey))
1019 {
1020     pmeth->paramgen_init = paramgen_init;
1021     pmeth->paramgen = paramgen;
1022 }
1023
1024 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1025                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
1026                               int (*keygen) (EVP_PKEY_CTX *ctx,
1027                                              EVP_PKEY *pkey))
1028 {
1029     pmeth->keygen_init = keygen_init;
1030     pmeth->keygen = keygen;
1031 }
1032
1033 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1034                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1035                             int (*sign) (EVP_PKEY_CTX *ctx,
1036                                          unsigned char *sig, size_t *siglen,
1037                                          const unsigned char *tbs,
1038                                          size_t tbslen))
1039 {
1040     pmeth->sign_init = sign_init;
1041     pmeth->sign = sign;
1042 }
1043
1044 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1045                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1046                               int (*verify) (EVP_PKEY_CTX *ctx,
1047                                              const unsigned char *sig,
1048                                              size_t siglen,
1049                                              const unsigned char *tbs,
1050                                              size_t tbslen))
1051 {
1052     pmeth->verify_init = verify_init;
1053     pmeth->verify = verify;
1054 }
1055
1056 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1057                                       int (*verify_recover_init) (EVP_PKEY_CTX
1058                                                                   *ctx),
1059                                       int (*verify_recover) (EVP_PKEY_CTX
1060                                                              *ctx,
1061                                                              unsigned char
1062                                                              *sig,
1063                                                              size_t *siglen,
1064                                                              const unsigned
1065                                                              char *tbs,
1066                                                              size_t tbslen))
1067 {
1068     pmeth->verify_recover_init = verify_recover_init;
1069     pmeth->verify_recover = verify_recover;
1070 }
1071
1072 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1073                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1074                                                     EVP_MD_CTX *mctx),
1075                                int (*signctx) (EVP_PKEY_CTX *ctx,
1076                                                unsigned char *sig,
1077                                                size_t *siglen,
1078                                                EVP_MD_CTX *mctx))
1079 {
1080     pmeth->signctx_init = signctx_init;
1081     pmeth->signctx = signctx;
1082 }
1083
1084 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1085                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1086                                                         EVP_MD_CTX *mctx),
1087                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1088                                                    const unsigned char *sig,
1089                                                    int siglen,
1090                                                    EVP_MD_CTX *mctx))
1091 {
1092     pmeth->verifyctx_init = verifyctx_init;
1093     pmeth->verifyctx = verifyctx;
1094 }
1095
1096 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1097                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1098                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1099                                                  unsigned char *out,
1100                                                  size_t *outlen,
1101                                                  const unsigned char *in,
1102                                                  size_t inlen))
1103 {
1104     pmeth->encrypt_init = encrypt_init;
1105     pmeth->encrypt = encryptfn;
1106 }
1107
1108 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1109                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1110                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1111                                                unsigned char *out,
1112                                                size_t *outlen,
1113                                                const unsigned char *in,
1114                                                size_t inlen))
1115 {
1116     pmeth->decrypt_init = decrypt_init;
1117     pmeth->decrypt = decrypt;
1118 }
1119
1120 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1121                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1122                               int (*derive) (EVP_PKEY_CTX *ctx,
1123                                              unsigned char *key,
1124                                              size_t *keylen))
1125 {
1126     pmeth->derive_init = derive_init;
1127     pmeth->derive = derive;
1128 }
1129
1130 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1131                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1132                                          void *p2),
1133                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1134                                              const char *type,
1135                                              const char *value))
1136 {
1137     pmeth->ctrl = ctrl;
1138     pmeth->ctrl_str = ctrl_str;
1139 }
1140
1141 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1142     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1143                        const unsigned char *tbs, size_t tbslen))
1144 {
1145     pmeth->digestsign = digestsign;
1146 }
1147
1148 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1149     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1150                          size_t siglen, const unsigned char *tbs,
1151                          size_t tbslen))
1152 {
1153     pmeth->digestverify = digestverify;
1154 }
1155
1156 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1157                              int (*check) (EVP_PKEY *pkey))
1158 {
1159     pmeth->check = check;
1160 }
1161
1162 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1163                                     int (*check) (EVP_PKEY *pkey))
1164 {
1165     pmeth->public_check = check;
1166 }
1167
1168 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1169                                    int (*check) (EVP_PKEY *pkey))
1170 {
1171     pmeth->param_check = check;
1172 }
1173
1174 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1175                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
1176                                                            EVP_MD_CTX *mctx))
1177 {
1178     pmeth->digest_custom = digest_custom;
1179 }
1180
1181 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1182                             int (**pinit) (EVP_PKEY_CTX *ctx))
1183 {
1184     *pinit = pmeth->init;
1185 }
1186
1187 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
1188                             int (**pcopy) (EVP_PKEY_CTX *dst,
1189                                            const EVP_PKEY_CTX *src))
1190 {
1191     *pcopy = pmeth->copy;
1192 }
1193
1194 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
1195                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
1196 {
1197     *pcleanup = pmeth->cleanup;
1198 }
1199
1200 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
1201                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
1202                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
1203                                                    EVP_PKEY *pkey))
1204 {
1205     if (pparamgen_init)
1206         *pparamgen_init = pmeth->paramgen_init;
1207     if (pparamgen)
1208         *pparamgen = pmeth->paramgen;
1209 }
1210
1211 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
1212                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
1213                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
1214                                                EVP_PKEY *pkey))
1215 {
1216     if (pkeygen_init)
1217         *pkeygen_init = pmeth->keygen_init;
1218     if (pkeygen)
1219         *pkeygen = pmeth->keygen;
1220 }
1221
1222 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
1223                             int (**psign_init) (EVP_PKEY_CTX *ctx),
1224                             int (**psign) (EVP_PKEY_CTX *ctx,
1225                                            unsigned char *sig, size_t *siglen,
1226                                            const unsigned char *tbs,
1227                                            size_t tbslen))
1228 {
1229     if (psign_init)
1230         *psign_init = pmeth->sign_init;
1231     if (psign)
1232         *psign = pmeth->sign;
1233 }
1234
1235 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
1236                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
1237                               int (**pverify) (EVP_PKEY_CTX *ctx,
1238                                                const unsigned char *sig,
1239                                                size_t siglen,
1240                                                const unsigned char *tbs,
1241                                                size_t tbslen))
1242 {
1243     if (pverify_init)
1244         *pverify_init = pmeth->verify_init;
1245     if (pverify)
1246         *pverify = pmeth->verify;
1247 }
1248
1249 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
1250                                       int (**pverify_recover_init) (EVP_PKEY_CTX
1251                                                                     *ctx),
1252                                       int (**pverify_recover) (EVP_PKEY_CTX
1253                                                                *ctx,
1254                                                                unsigned char
1255                                                                *sig,
1256                                                                size_t *siglen,
1257                                                                const unsigned
1258                                                                char *tbs,
1259                                                                size_t tbslen))
1260 {
1261     if (pverify_recover_init)
1262         *pverify_recover_init = pmeth->verify_recover_init;
1263     if (pverify_recover)
1264         *pverify_recover = pmeth->verify_recover;
1265 }
1266
1267 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
1268                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
1269                                                       EVP_MD_CTX *mctx),
1270                                int (**psignctx) (EVP_PKEY_CTX *ctx,
1271                                                  unsigned char *sig,
1272                                                  size_t *siglen,
1273                                                  EVP_MD_CTX *mctx))
1274 {
1275     if (psignctx_init)
1276         *psignctx_init = pmeth->signctx_init;
1277     if (psignctx)
1278         *psignctx = pmeth->signctx;
1279 }
1280
1281 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
1282                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
1283                                                           EVP_MD_CTX *mctx),
1284                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
1285                                                      const unsigned char *sig,
1286                                                      int siglen,
1287                                                      EVP_MD_CTX *mctx))
1288 {
1289     if (pverifyctx_init)
1290         *pverifyctx_init = pmeth->verifyctx_init;
1291     if (pverifyctx)
1292         *pverifyctx = pmeth->verifyctx;
1293 }
1294
1295 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
1296                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
1297                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
1298                                                    unsigned char *out,
1299                                                    size_t *outlen,
1300                                                    const unsigned char *in,
1301                                                    size_t inlen))
1302 {
1303     if (pencrypt_init)
1304         *pencrypt_init = pmeth->encrypt_init;
1305     if (pencryptfn)
1306         *pencryptfn = pmeth->encrypt;
1307 }
1308
1309 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
1310                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
1311                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
1312                                                  unsigned char *out,
1313                                                  size_t *outlen,
1314                                                  const unsigned char *in,
1315                                                  size_t inlen))
1316 {
1317     if (pdecrypt_init)
1318         *pdecrypt_init = pmeth->decrypt_init;
1319     if (pdecrypt)
1320         *pdecrypt = pmeth->decrypt;
1321 }
1322
1323 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
1324                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
1325                               int (**pderive) (EVP_PKEY_CTX *ctx,
1326                                                unsigned char *key,
1327                                                size_t *keylen))
1328 {
1329     if (pderive_init)
1330         *pderive_init = pmeth->derive_init;
1331     if (pderive)
1332         *pderive = pmeth->derive;
1333 }
1334
1335 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
1336                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1337                                            void *p2),
1338                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
1339                                                const char *type,
1340                                                const char *value))
1341 {
1342     if (pctrl)
1343         *pctrl = pmeth->ctrl;
1344     if (pctrl_str)
1345         *pctrl_str = pmeth->ctrl_str;
1346 }
1347
1348 void EVP_PKEY_meth_get_digestsign(EVP_PKEY_METHOD *pmeth,
1349     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1350                         const unsigned char *tbs, size_t tbslen))
1351 {
1352     if (digestsign)
1353         *digestsign = pmeth->digestsign;
1354 }
1355
1356 void EVP_PKEY_meth_get_digestverify(EVP_PKEY_METHOD *pmeth,
1357     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1358                           size_t siglen, const unsigned char *tbs,
1359                           size_t tbslen))
1360 {
1361     if (digestverify)
1362         *digestverify = pmeth->digestverify;
1363 }
1364
1365 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
1366                              int (**pcheck) (EVP_PKEY *pkey))
1367 {
1368     if (pcheck != NULL)
1369         *pcheck = pmeth->check;
1370 }
1371
1372 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
1373                                     int (**pcheck) (EVP_PKEY *pkey))
1374 {
1375     if (pcheck != NULL)
1376         *pcheck = pmeth->public_check;
1377 }
1378
1379 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
1380                                    int (**pcheck) (EVP_PKEY *pkey))
1381 {
1382     if (pcheck != NULL)
1383         *pcheck = pmeth->param_check;
1384 }
1385
1386 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
1387                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
1388                                                              EVP_MD_CTX *mctx))
1389 {
1390     if (pdigest_custom != NULL)
1391         *pdigest_custom = pmeth->digest_custom;
1392 }
1393
1394 #endif /* FIPS_MODE */