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 typedef const EVP_PKEY_METHOD *(*pmeth_fn)(void);
  27 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
  28
  29 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
  30
  31 /* This array needs to be in order of NIDs */
  32 static pmeth_fn standard_methods[] = {
  33 #ifndef OPENSSL_NO_RSA
  34     rsa_pkey_method,
  35 #endif
  36 #ifndef OPENSSL_NO_DH
  37     dh_pkey_method,
  38 #endif
  39 #ifndef OPENSSL_NO_DSA
  40     dsa_pkey_method,
  41 #endif
  42 #ifndef OPENSSL_NO_EC
  43     ec_pkey_method,
  44 #endif
  45     hmac_pkey_method,
  46 #ifndef OPENSSL_NO_CMAC
  47     cmac_pkey_method,
  48 #endif
  49 #ifndef OPENSSL_NO_RSA
  50     rsa_pss_pkey_method,
  51 #endif
  52 #ifndef OPENSSL_NO_DH
  53     dhx_pkey_method,
  54 #endif
  55 #ifndef OPENSSL_NO_SCRYPT
  56     scrypt_pkey_method,
  57 #endif
  58     tls1_prf_pkey_method,
  59 #ifndef OPENSSL_NO_EC
  60     ecx25519_pkey_method,
  61     ecx448_pkey_method,
  62 #endif
  63     hkdf_pkey_method,
  64 #ifndef OPENSSL_NO_POLY1305
  65     poly1305_pkey_method,
  66 #endif
  67 #ifndef OPENSSL_NO_SIPHASH
  68     siphash_pkey_method,
  69 #endif
  70 #ifndef OPENSSL_NO_EC
  71     ed25519_pkey_method,
  72     ed448_pkey_method,
  73 #endif
  74 #ifndef OPENSSL_NO_SM2
  75     sm2_pkey_method,
  76 #endif
  77 };
  78
  79 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  80
  81 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
  82 {
  83     return ((*a)->pkey_id - ((**b)())->pkey_id);
  84 }
  85
  86 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  87
  88 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  89                      const EVP_PKEY_METHOD *const *b)
  90 {
  91     return ((*a)->pkey_id - (*b)->pkey_id);
  92 }
  93
  94 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
  95 {
  96     pmeth_fn *ret;
  97     EVP_PKEY_METHOD tmp;
  98     const EVP_PKEY_METHOD *t = &tmp;
  99
 100     tmp.pkey_id = type;
 101     if (app_pkey_methods) {
 102         int idx;
 103         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
 104         if (idx >= 0)
 105             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 106     }
 107     ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
 108                                  sizeof(standard_methods) /
 109                                  sizeof(pmeth_fn));
 110     if (ret == NULL || *ret == NULL)
 111         return NULL;
 112     return (**ret)();
 113 }
 114
 115 static EVP_PKEY_CTX *int_ctx_new(OPENSSL_CTX *libctx,
 116                                  EVP_PKEY *pkey, ENGINE *e,
 117                                  const char *name, const char *propquery,
 118                                  int id)
 119 {
 120     EVP_PKEY_CTX *ret;
 121     const EVP_PKEY_METHOD *pmeth = NULL;
 122
 123     /*
 124      * When using providers, the context is bound to the algo implementation
 125      * later.
 126      */
 127     if (pkey == NULL && e == NULL && id == -1)
 128         goto common;
 129
 130     /* TODO(3.0) Legacy code should be removed when all is provider based */
 131     /* BEGIN legacy */
 132     if (id == -1) {
 133         if (pkey == NULL)
 134             return 0;
 135         id = pkey->type;
 136     }
 137
 138     /*
 139      * Here, we extract what information we can for the purpose of
 140      * supporting usage with implementations from providers, to make
 141      * for a smooth transition from legacy stuff to provider based stuff.
 142      *
 143      * If an engine is given, this is entirely legacy, and we should not
 144      * pretend anything else, so we only set the name when no engine is
 145      * given.  If both are already given, someone made a mistake, and
 146      * since that can only happen internally, it's safe to make an
 147      * assertion.
 148      */
 149     if (!ossl_assert(e == NULL || name == NULL))
 150         return NULL;
 151     if (e == NULL)
 152         name = OBJ_nid2sn(id);
 153     propquery = NULL;
 154     /*
 155      * We were called using legacy data, or an EVP_PKEY, but an EVP_PKEY
 156      * isn't tied to a specific library context, so we fall back to the
 157      * default library context.
 158      * TODO(v3.0): an EVP_PKEY that doesn't originate from a leagacy key
 159      * structure only has the pkeys[] cache, where the first element is
 160      * considered the "origin".  Investigate if that could be a suitable
 161      * way to find a library context.
 162      */
 163     libctx = NULL;
 164
 165 #ifndef OPENSSL_NO_ENGINE
 166     if (e == NULL && pkey != NULL)
 167         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 168     /* Try to find an ENGINE which implements this method */
 169     if (e) {
 170         if (!ENGINE_init(e)) {
 171             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
 172             return NULL;
 173         }
 174     } else {
 175         e = ENGINE_get_pkey_meth_engine(id);
 176     }
 177
 178     /*
 179      * If an ENGINE handled this method look it up. Otherwise use internal
 180      * tables.
 181      */
 182     if (e)
 183         pmeth = ENGINE_get_pkey_meth(e, id);
 184     else
 185 #endif
 186         pmeth = EVP_PKEY_meth_find(id);
 187
 188     if (pmeth == NULL) {
 189 #ifndef OPENSSL_NO_ENGINE
 190         ENGINE_finish(e);
 191 #endif
 192         EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
 193         return NULL;
 194     }
 195     /* END legacy */
 196
 197  common:
 198     ret = OPENSSL_zalloc(sizeof(*ret));
 199     if (ret == NULL) {
 200 #ifndef OPENSSL_NO_ENGINE
 201         ENGINE_finish(e);
 202 #endif
 203         EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
 204         return NULL;
 205     }
 206     ret->libctx = libctx;
 207     ret->algorithm = name;
 208     ret->propquery = propquery;
 209     ret->engine = e;
 210     ret->pmeth = pmeth;
 211     ret->operation = EVP_PKEY_OP_UNDEFINED;
 212     ret->pkey = pkey;
 213     if (pkey != NULL)
 214         EVP_PKEY_up_ref(pkey);
 215
 216     if (pmeth != NULL && pmeth->init != NULL) {
 217         if (pmeth->init(ret) <= 0) {
 218             ret->pmeth = NULL;
 219             EVP_PKEY_CTX_free(ret);
 220             return NULL;
 221         }
 222     }
 223
 224     return ret;
 225 }
 226
 227 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
 228 {
 229     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 230         if (ctx->op.kex.exchprovctx != NULL && ctx->op.kex.exchange != NULL)
 231             ctx->op.kex.exchange->freectx(ctx->op.kex.exchprovctx);
 232         EVP_KEYEXCH_free(ctx->op.kex.exchange);
 233         ctx->op.kex.exchprovctx = NULL;
 234         ctx->op.kex.exchange = NULL;
 235     } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 236         if (ctx->op.sig.sigprovctx != NULL && ctx->op.sig.signature != NULL)
 237             ctx->op.sig.signature->freectx(ctx->op.sig.sigprovctx);
 238         EVP_SIGNATURE_free(ctx->op.sig.signature);
 239         ctx->op.sig.sigprovctx = NULL;
 240         ctx->op.sig.signature = NULL;
 241     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
 242         if (ctx->op.ciph.ciphprovctx != NULL && ctx->op.ciph.cipher != NULL)
 243             ctx->op.ciph.cipher->freectx(ctx->op.ciph.ciphprovctx);
 244         EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
 245         ctx->op.ciph.ciphprovctx = NULL;
 246         ctx->op.ciph.cipher = NULL;
 247     }
 248 }
 249
 250 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 251 {
 252     EVP_PKEY_METHOD *pmeth;
 253
 254     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 255     if (pmeth == NULL) {
 256         EVPerr(EVP_F_EVP_PKEY_METH_NEW, ERR_R_MALLOC_FAILURE);
 257         return NULL;
 258     }
 259
 260     pmeth->pkey_id = id;
 261     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 262     return pmeth;
 263 }
 264
 265 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 266                              const EVP_PKEY_METHOD *meth)
 267 {
 268     if (ppkey_id)
 269         *ppkey_id = meth->pkey_id;
 270     if (pflags)
 271         *pflags = meth->flags;
 272 }
 273
 274 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 275 {
 276
 277     dst->init = src->init;
 278     dst->copy = src->copy;
 279     dst->cleanup = src->cleanup;
 280
 281     dst->paramgen_init = src->paramgen_init;
 282     dst->paramgen = src->paramgen;
 283
 284     dst->keygen_init = src->keygen_init;
 285     dst->keygen = src->keygen;
 286
 287     dst->sign_init = src->sign_init;
 288     dst->sign = src->sign;
 289
 290     dst->verify_init = src->verify_init;
 291     dst->verify = src->verify;
 292
 293     dst->verify_recover_init = src->verify_recover_init;
 294     dst->verify_recover = src->verify_recover;
 295
 296     dst->signctx_init = src->signctx_init;
 297     dst->signctx = src->signctx;
 298
 299     dst->verifyctx_init = src->verifyctx_init;
 300     dst->verifyctx = src->verifyctx;
 301
 302     dst->encrypt_init = src->encrypt_init;
 303     dst->encrypt = src->encrypt;
 304
 305     dst->decrypt_init = src->decrypt_init;
 306     dst->decrypt = src->decrypt;
 307
 308     dst->derive_init = src->derive_init;
 309     dst->derive = src->derive;
 310
 311     dst->ctrl = src->ctrl;
 312     dst->ctrl_str = src->ctrl_str;
 313
 314     dst->check = src->check;
 315 }
 316
 317 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 318 {
 319     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 320         OPENSSL_free(pmeth);
 321 }
 322
 323 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 324 {
 325     return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
 326 }
 327
 328 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 329 {
 330     return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
 331 }
 332
 333 EVP_PKEY_CTX *EVP_PKEY_CTX_new_provided(OPENSSL_CTX *libctx,
 334                                         const char *name,
 335                                         const char *propquery)
 336 {
 337     return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
 338 }
 339
 340 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 341 {
 342     EVP_PKEY_CTX *rctx;
 343
 344     if (((pctx->pmeth == NULL) || (pctx->pmeth->copy == NULL))
 345             && ((EVP_PKEY_CTX_IS_DERIVE_OP(pctx)
 346                  && pctx->op.kex.exchprovctx == NULL)
 347                 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)
 348                     && pctx->op.sig.sigprovctx == NULL)))
 349         return NULL;
 350 #ifndef OPENSSL_NO_ENGINE
 351     /* Make sure it's safe to copy a pkey context using an ENGINE */
 352     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 353         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
 354         return 0;
 355     }
 356 #endif
 357     rctx = OPENSSL_zalloc(sizeof(*rctx));
 358     if (rctx == NULL) {
 359         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_MALLOC_FAILURE);
 360         return NULL;
 361     }
 362
 363     if (pctx->pkey != NULL)
 364         EVP_PKEY_up_ref(pctx->pkey);
 365     rctx->pkey = pctx->pkey;
 366     rctx->operation = pctx->operation;
 367     rctx->libctx = pctx->libctx;
 368     rctx->algorithm = pctx->algorithm;
 369     rctx->propquery = pctx->propquery;
 370
 371     if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
 372         if (pctx->op.kex.exchange != NULL) {
 373             rctx->op.kex.exchange = pctx->op.kex.exchange;
 374             if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange)) {
 375                 OPENSSL_free(rctx);
 376                 return NULL;
 377             }
 378         }
 379         if (pctx->op.kex.exchprovctx != NULL) {
 380             if (!ossl_assert(pctx->op.kex.exchange != NULL))
 381                 return NULL;
 382             rctx->op.kex.exchprovctx
 383                 = pctx->op.kex.exchange->dupctx(pctx->op.kex.exchprovctx);
 384             if (rctx->op.kex.exchprovctx == NULL) {
 385                 EVP_KEYEXCH_free(rctx->op.kex.exchange);
 386                 OPENSSL_free(rctx);
 387                 return NULL;
 388             }
 389             return rctx;
 390         }
 391     } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
 392         if (pctx->op.sig.signature != NULL) {
 393             rctx->op.sig.signature = pctx->op.sig.signature;
 394             if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature)) {
 395                 OPENSSL_free(rctx);
 396                 return NULL;
 397             }
 398         }
 399         if (pctx->op.sig.sigprovctx != NULL) {
 400             if (!ossl_assert(pctx->op.sig.signature != NULL))
 401                 return NULL;
 402             rctx->op.sig.sigprovctx
 403                 = pctx->op.sig.signature->dupctx(pctx->op.sig.sigprovctx);
 404             if (rctx->op.sig.sigprovctx == NULL) {
 405                 EVP_SIGNATURE_free(rctx->op.sig.signature);
 406                 OPENSSL_free(rctx);
 407                 return NULL;
 408             }
 409             return rctx;
 410         }
 411     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
 412         if (pctx->op.ciph.cipher != NULL) {
 413             rctx->op.ciph.cipher = pctx->op.ciph.cipher;
 414             if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher)) {
 415                 OPENSSL_free(rctx);
 416                 return NULL;
 417             }
 418         }
 419         if (pctx->op.ciph.ciphprovctx != NULL) {
 420             if (!ossl_assert(pctx->op.ciph.cipher != NULL))
 421                 return NULL;
 422             rctx->op.ciph.ciphprovctx
 423                 = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.ciphprovctx);
 424             if (rctx->op.ciph.ciphprovctx == NULL) {
 425                 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
 426                 OPENSSL_free(rctx);
 427                 return NULL;
 428             }
 429             return rctx;
 430         }
 431     }
 432
 433     rctx->pmeth = pctx->pmeth;
 434 #ifndef OPENSSL_NO_ENGINE
 435     rctx->engine = pctx->engine;
 436 #endif
 437
 438     if (pctx->peerkey)
 439         EVP_PKEY_up_ref(pctx->peerkey);
 440     rctx->peerkey = pctx->peerkey;
 441
 442     if (pctx->pmeth->copy(rctx, pctx) > 0)
 443         return rctx;
 444
 445     rctx->pmeth = NULL;
 446     EVP_PKEY_CTX_free(rctx);
 447     return NULL;
 448
 449 }
 450
 451 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 452 {
 453     if (app_pkey_methods == NULL) {
 454         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 455         if (app_pkey_methods == NULL){
 456             EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 457             return 0;
 458         }
 459     }
 460     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 461         EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 462         return 0;
 463     }
 464     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 465     return 1;
 466 }
 467
 468 void evp_app_cleanup_int(void)
 469 {
 470     if (app_pkey_methods != NULL)
 471         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 472 }
 473
 474 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 475 {
 476     const EVP_PKEY_METHOD *ret;
 477
 478     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 479
 480     return ret == NULL ? 0 : 1;
 481 }
 482
 483 size_t EVP_PKEY_meth_get_count(void)
 484 {
 485     size_t rv = OSSL_NELEM(standard_methods);
 486
 487     if (app_pkey_methods)
 488         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 489     return rv;
 490 }
 491
 492 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 493 {
 494     if (idx < OSSL_NELEM(standard_methods))
 495         return (standard_methods[idx])();
 496     if (app_pkey_methods == NULL)
 497         return NULL;
 498     idx -= OSSL_NELEM(standard_methods);
 499     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 500         return NULL;
 501     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 502 }
 503
 504 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 505 {
 506     if (ctx == NULL)
 507         return;
 508     if (ctx->pmeth && ctx->pmeth->cleanup)
 509         ctx->pmeth->cleanup(ctx);
 510
 511     evp_pkey_ctx_free_old_ops(ctx);
 512     EVP_KEYMGMT_free(ctx->keymgmt);
 513
 514     EVP_PKEY_free(ctx->pkey);
 515     EVP_PKEY_free(ctx->peerkey);
 516 #ifndef OPENSSL_NO_ENGINE
 517     ENGINE_finish(ctx->engine);
 518 #endif
 519     OPENSSL_free(ctx);
 520 }
 521
 522 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 523 {
 524     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 525             && ctx->op.sig.sigprovctx != NULL
 526             && ctx->op.sig.signature != NULL
 527             && ctx->op.sig.signature->get_ctx_params != NULL)
 528         return ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx,
 529                                                      params);
 530     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 531             && ctx->op.ciph.ciphprovctx != NULL
 532             && ctx->op.ciph.cipher != NULL
 533             && ctx->op.ciph.cipher->get_ctx_params != NULL)
 534         return ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.ciphprovctx,
 535                                                    params);
 536     return 0;
 537 }
 538
 539 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx)
 540 {
 541     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 542             && ctx->op.sig.signature != NULL
 543             && ctx->op.sig.signature->gettable_ctx_params != NULL)
 544         return ctx->op.sig.signature->gettable_ctx_params();
 545
 546     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 547             && ctx->op.ciph.cipher != NULL
 548             && ctx->op.ciph.cipher->gettable_ctx_params != NULL)
 549         return ctx->op.ciph.cipher->gettable_ctx_params();
 550
 551     return NULL;
 552 }
 553
 554 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 555 {
 556     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 557             && ctx->op.kex.exchprovctx != NULL
 558             && ctx->op.kex.exchange != NULL
 559             && ctx->op.kex.exchange->set_ctx_params != NULL)
 560         return ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.exchprovctx,
 561                                                     params);
 562     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 563             && ctx->op.sig.sigprovctx != NULL
 564             && ctx->op.sig.signature != NULL
 565             && ctx->op.sig.signature->set_ctx_params != NULL)
 566         return ctx->op.sig.signature->set_ctx_params(ctx->op.sig.sigprovctx,
 567                                                      params);
 568     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 569             && ctx->op.ciph.ciphprovctx != NULL
 570             && ctx->op.ciph.cipher != NULL
 571             && ctx->op.ciph.cipher->set_ctx_params != NULL)
 572         return ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.ciphprovctx,
 573                                                      params);
 574     return 0;
 575 }
 576
 577 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx)
 578 {
 579     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 580             && ctx->op.kex.exchange != NULL
 581             && ctx->op.kex.exchange->settable_ctx_params != NULL)
 582         return ctx->op.kex.exchange->settable_ctx_params();
 583     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 584             && ctx->op.sig.signature != NULL
 585             && ctx->op.sig.signature->settable_ctx_params != NULL)
 586         return ctx->op.sig.signature->settable_ctx_params();
 587     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 588             && ctx->op.ciph.cipher != NULL
 589             && ctx->op.ciph.cipher->settable_ctx_params != NULL)
 590         return ctx->op.ciph.cipher->settable_ctx_params();
 591
 592     return NULL;
 593 }
 594
 595 #ifndef OPENSSL_NO_DH
 596 int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad)
 597 {
 598     OSSL_PARAM dh_pad_params[2];
 599     unsigned int upad = pad;
 600
 601     /* We use EVP_PKEY_CTX_ctrl return values */
 602     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 603         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 604         return -2;
 605     }
 606
 607     /* TODO(3.0): Remove this eventually when no more legacy */
 608     if (ctx->op.kex.exchprovctx == NULL)
 609         return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_DERIVE,
 610                                  EVP_PKEY_CTRL_DH_PAD, pad, NULL);
 611
 612     dh_pad_params[0] = OSSL_PARAM_construct_uint(OSSL_EXCHANGE_PARAM_PAD, &upad);
 613     dh_pad_params[1] = OSSL_PARAM_construct_end();
 614
 615     return EVP_PKEY_CTX_set_params(ctx, dh_pad_params);
 616 }
 617 #endif
 618
 619 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
 620 {
 621     OSSL_PARAM sig_md_params[3], *p = sig_md_params;
 622     /* 80 should be big enough */
 623     char name[80] = "";
 624     const EVP_MD *tmp;
 625
 626     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 627         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 628         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 629         return -2;
 630     }
 631
 632     /* TODO(3.0): Remove this eventually when no more legacy */
 633     if (ctx->op.sig.sigprovctx == NULL)
 634         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 635                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
 636
 637     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 638                                             name,
 639                                             sizeof(name));
 640     *p++ = OSSL_PARAM_construct_end();
 641
 642     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
 643         return 0;
 644
 645     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
 646     if (tmp == NULL)
 647         return 0;
 648
 649     *md = tmp;
 650
 651     return 1;
 652 }
 653
 654 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 655 {
 656     OSSL_PARAM sig_md_params[3], *p = sig_md_params;
 657     size_t mdsize;
 658     const char *name;
 659
 660     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 661         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 662         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 663         return -2;
 664     }
 665
 666     /* TODO(3.0): Remove this eventually when no more legacy */
 667     if (ctx->op.sig.sigprovctx == NULL)
 668         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 669                                  EVP_PKEY_CTRL_MD, 0, (void *)(md));
 670
 671     if (md == NULL) {
 672         name = "";
 673         mdsize = 0;
 674     } else {
 675         mdsize = EVP_MD_size(md);
 676         name = EVP_MD_name(md);
 677     }
 678
 679     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 680                                             /*
 681                                              * Cast away the const. This is read
 682                                              * only so should be safe
 683                                              */
 684                                             (char *)name,
 685                                             strlen(name) + 1);
 686     *p++ = OSSL_PARAM_construct_size_t(OSSL_SIGNATURE_PARAM_DIGEST_SIZE,
 687                                        &mdsize);
 688     *p++ = OSSL_PARAM_construct_end();
 689
 690     return EVP_PKEY_CTX_set_params(ctx, sig_md_params);
 691 }
 692
 693 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
 694                                 int cmd, int p1, void *p2)
 695 {
 696     switch (cmd) {
 697 #ifndef OPENSSL_NO_DH
 698     case EVP_PKEY_CTRL_DH_PAD:
 699         return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
 700 #endif
 701     case EVP_PKEY_CTRL_MD:
 702         return EVP_PKEY_CTX_set_signature_md(ctx, p2);
 703     case EVP_PKEY_CTRL_GET_MD:
 704         return EVP_PKEY_CTX_get_signature_md(ctx, p2);
 705     case EVP_PKEY_CTRL_RSA_PADDING:
 706         return EVP_PKEY_CTX_set_rsa_padding(ctx, p1);
 707     case EVP_PKEY_CTRL_GET_RSA_PADDING:
 708         return EVP_PKEY_CTX_get_rsa_padding(ctx, p2);
 709     case EVP_PKEY_CTRL_RSA_OAEP_MD:
 710         return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
 711     case EVP_PKEY_CTRL_GET_RSA_OAEP_MD:
 712         return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
 713     case EVP_PKEY_CTRL_RSA_MGF1_MD:
 714         return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
 715     case EVP_PKEY_CTRL_GET_RSA_MGF1_MD:
 716         return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
 717     case EVP_PKEY_CTRL_RSA_OAEP_LABEL:
 718         return EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, p2, p1);
 719     case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL:
 720         return EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, (unsigned char **)p2);
 721     case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
 722     case EVP_PKEY_CTRL_PKCS7_DECRYPT:
 723 #ifndef OPENSSL_NO_CMS
 724     case EVP_PKEY_CTRL_CMS_DECRYPT:
 725     case EVP_PKEY_CTRL_CMS_ENCRYPT:
 726 #endif
 727         if (ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS)
 728             return 1;
 729         ERR_raise(ERR_LIB_EVP,
 730                   EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 731         return -2;
 732     }
 733     return 0;
 734 }
 735
 736 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
 737                       int cmd, int p1, void *p2)
 738 {
 739     int ret;
 740
 741     if (ctx == NULL) {
 742         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 743         return -2;
 744     }
 745
 746     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
 747             || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 748                 && ctx->op.sig.sigprovctx != NULL)
 749             || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 750                 && ctx->op.ciph.ciphprovctx != NULL))
 751         return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
 752
 753     if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
 754         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 755         return -2;
 756     }
 757     if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
 758         return -1;
 759
 760     /* Skip the operation checks since this is called in a very early stage */
 761     if (ctx->pmeth->digest_custom != NULL)
 762         goto doit;
 763
 764     if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
 765         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
 766         return -1;
 767     }
 768
 769     if ((optype != -1) && !(ctx->operation & optype)) {
 770         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
 771         return -1;
 772     }
 773
 774  doit:
 775     ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
 776
 777     if (ret == -2)
 778         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 779
 780     return ret;
 781 }
 782
 783 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
 784                              int cmd, uint64_t value)
 785 {
 786     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
 787 }
 788
 789 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
 790                                     const char *value)
 791 {
 792 #ifndef OPENSSL_NO_DH
 793     if (strcmp(name, "dh_pad") == 0) {
 794         int pad;
 795
 796         pad = atoi(value);
 797         return EVP_PKEY_CTX_set_dh_pad(ctx, pad);
 798     }
 799 #endif
 800     if (strcmp(name, "digest") == 0) {
 801         int ret;
 802         EVP_MD *md;
 803
 804         if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) || ctx->op.sig.signature == NULL)
 805             return 0;
 806         md = EVP_MD_fetch(ossl_provider_library_context(ctx->op.sig.signature->prov),
 807                           value, NULL);
 808         if (md == NULL)
 809             return 0;
 810         ret = EVP_PKEY_CTX_set_signature_md(ctx, md);
 811         EVP_MD_meth_free(md);
 812         return ret;
 813     }
 814
 815     if (strcmp(name, "rsa_padding_mode") == 0) {
 816         int pm;
 817
 818         if (strcmp(value, "pkcs1") == 0) {
 819             pm = RSA_PKCS1_PADDING;
 820         } else if (strcmp(value, "sslv23") == 0) {
 821             pm = RSA_SSLV23_PADDING;
 822         } else if (strcmp(value, "none") == 0) {
 823             pm = RSA_NO_PADDING;
 824         } else if (strcmp(value, "oeap") == 0) {
 825             pm = RSA_PKCS1_OAEP_PADDING;
 826         } else if (strcmp(value, "oaep") == 0) {
 827             pm = RSA_PKCS1_OAEP_PADDING;
 828         } else if (strcmp(value, "x931") == 0) {
 829             pm = RSA_X931_PADDING;
 830         } else if (strcmp(value, "pss") == 0) {
 831             pm = RSA_PKCS1_PSS_PADDING;
 832         } else {
 833             ERR_raise(ERR_LIB_RSA, RSA_R_UNKNOWN_PADDING_TYPE);
 834             return -2;
 835         }
 836         return EVP_PKEY_CTX_set_rsa_padding(ctx, pm);
 837     }
 838
 839     if (strcmp(name, "rsa_mgf1_md") == 0)
 840         return EVP_PKEY_CTX_set_rsa_mgf1_md_name(ctx, value, NULL);
 841
 842     if (strcmp(name, "rsa_oaep_md") == 0)
 843         return EVP_PKEY_CTX_set_rsa_oaep_md_name(ctx, value, NULL);
 844
 845     if (strcmp(name, "rsa_oaep_label") == 0) {
 846         unsigned char *lab;
 847         long lablen;
 848         int ret;
 849
 850         lab = OPENSSL_hexstr2buf(value, &lablen);
 851         if (lab == NULL)
 852             return 0;
 853         ret = EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, lab, lablen);
 854         if (ret <= 0)
 855             OPENSSL_free(lab);
 856         return ret;
 857     }
 858
 859
 860
 861     return 0;
 862 }
 863
 864 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
 865                           const char *name, const char *value)
 866 {
 867     if (ctx == NULL) {
 868         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 869         return -2;
 870     }
 871
 872     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
 873             || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 874                 && ctx->op.sig.sigprovctx != NULL)
 875             || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 876                 && ctx->op.ciph.ciphprovctx != NULL))
 877         return legacy_ctrl_str_to_param(ctx, name, value);
 878
 879     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
 880         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 881         return -2;
 882     }
 883     if (strcmp(name, "digest") == 0)
 884         return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
 885                                value);
 886     return ctx->pmeth->ctrl_str(ctx, name, value);
 887 }
 888
 889 /* Utility functions to send a string of hex string to a ctrl */
 890
 891 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
 892 {
 893     size_t len;
 894
 895     len = strlen(str);
 896     if (len > INT_MAX)
 897         return -1;
 898     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
 899 }
 900
 901 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
 902 {
 903     unsigned char *bin;
 904     long binlen;
 905     int rv = -1;
 906
 907     bin = OPENSSL_hexstr2buf(hex, &binlen);
 908     if (bin == NULL)
 909         return 0;
 910     if (binlen <= INT_MAX)
 911         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
 912     OPENSSL_free(bin);
 913     return rv;
 914 }
 915
 916 /* Pass a message digest to a ctrl */
 917 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
 918 {
 919     const EVP_MD *m;
 920
 921     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
 922         EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
 923         return 0;
 924     }
 925     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
 926 }
 927
 928 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
 929 {
 930     return ctx->operation;
 931 }
 932
 933 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
 934 {
 935     ctx->keygen_info = dat;
 936     ctx->keygen_info_count = datlen;
 937 }
 938
 939 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
 940 {
 941     ctx->data = data;
 942 }
 943
 944 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
 945 {
 946     return ctx->data;
 947 }
 948
 949 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
 950 {
 951     return ctx->pkey;
 952 }
 953
 954 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
 955 {
 956     return ctx->peerkey;
 957 }
 958
 959 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
 960 {
 961     ctx->app_data = data;
 962 }
 963
 964 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
 965 {
 966     return ctx->app_data;
 967 }
 968
 969 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
 970                             int (*init) (EVP_PKEY_CTX *ctx))
 971 {
 972     pmeth->init = init;
 973 }
 974
 975 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
 976                             int (*copy) (EVP_PKEY_CTX *dst,
 977                                          const EVP_PKEY_CTX *src))
 978 {
 979     pmeth->copy = copy;
 980 }
 981
 982 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
 983                                void (*cleanup) (EVP_PKEY_CTX *ctx))
 984 {
 985     pmeth->cleanup = cleanup;
 986 }
 987
 988 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
 989                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
 990                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
 991                                                  EVP_PKEY *pkey))
 992 {
 993     pmeth->paramgen_init = paramgen_init;
 994     pmeth->paramgen = paramgen;
 995 }
 996
 997 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
 998                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
 999                               int (*keygen) (EVP_PKEY_CTX *ctx,
1000                                              EVP_PKEY *pkey))
1001 {
1002     pmeth->keygen_init = keygen_init;
1003     pmeth->keygen = keygen;
1004 }
1005
1006 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1007                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1008                             int (*sign) (EVP_PKEY_CTX *ctx,
1009                                          unsigned char *sig, size_t *siglen,
1010                                          const unsigned char *tbs,
1011                                          size_t tbslen))
1012 {
1013     pmeth->sign_init = sign_init;
1014     pmeth->sign = sign;
1015 }
1016
1017 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1018                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1019                               int (*verify) (EVP_PKEY_CTX *ctx,
1020                                              const unsigned char *sig,
1021                                              size_t siglen,
1022                                              const unsigned char *tbs,
1023                                              size_t tbslen))
1024 {
1025     pmeth->verify_init = verify_init;
1026     pmeth->verify = verify;
1027 }
1028
1029 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1030                                       int (*verify_recover_init) (EVP_PKEY_CTX
1031                                                                   *ctx),
1032                                       int (*verify_recover) (EVP_PKEY_CTX
1033                                                              *ctx,
1034                                                              unsigned char
1035                                                              *sig,
1036                                                              size_t *siglen,
1037                                                              const unsigned
1038                                                              char *tbs,
1039                                                              size_t tbslen))
1040 {
1041     pmeth->verify_recover_init = verify_recover_init;
1042     pmeth->verify_recover = verify_recover;
1043 }
1044
1045 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1046                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1047                                                     EVP_MD_CTX *mctx),
1048                                int (*signctx) (EVP_PKEY_CTX *ctx,
1049                                                unsigned char *sig,
1050                                                size_t *siglen,
1051                                                EVP_MD_CTX *mctx))
1052 {
1053     pmeth->signctx_init = signctx_init;
1054     pmeth->signctx = signctx;
1055 }
1056
1057 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1058                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1059                                                         EVP_MD_CTX *mctx),
1060                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1061                                                    const unsigned char *sig,
1062                                                    int siglen,
1063                                                    EVP_MD_CTX *mctx))
1064 {
1065     pmeth->verifyctx_init = verifyctx_init;
1066     pmeth->verifyctx = verifyctx;
1067 }
1068
1069 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1070                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1071                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1072                                                  unsigned char *out,
1073                                                  size_t *outlen,
1074                                                  const unsigned char *in,
1075                                                  size_t inlen))
1076 {
1077     pmeth->encrypt_init = encrypt_init;
1078     pmeth->encrypt = encryptfn;
1079 }
1080
1081 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1082                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1083                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1084                                                unsigned char *out,
1085                                                size_t *outlen,
1086                                                const unsigned char *in,
1087                                                size_t inlen))
1088 {
1089     pmeth->decrypt_init = decrypt_init;
1090     pmeth->decrypt = decrypt;
1091 }
1092
1093 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1094                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1095                               int (*derive) (EVP_PKEY_CTX *ctx,
1096                                              unsigned char *key,
1097                                              size_t *keylen))
1098 {
1099     pmeth->derive_init = derive_init;
1100     pmeth->derive = derive;
1101 }
1102
1103 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1104                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1105                                          void *p2),
1106                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1107                                              const char *type,
1108                                              const char *value))
1109 {
1110     pmeth->ctrl = ctrl;
1111     pmeth->ctrl_str = ctrl_str;
1112 }
1113
1114 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1115     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1116                        const unsigned char *tbs, size_t tbslen))
1117 {
1118     pmeth->digestsign = digestsign;
1119 }
1120
1121 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1122     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1123                          size_t siglen, const unsigned char *tbs,
1124                          size_t tbslen))
1125 {
1126     pmeth->digestverify = digestverify;
1127 }
1128
1129 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1130                              int (*check) (EVP_PKEY *pkey))
1131 {
1132     pmeth->check = check;
1133 }
1134
1135 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1136                                     int (*check) (EVP_PKEY *pkey))
1137 {
1138     pmeth->public_check = check;
1139 }
1140
1141 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1142                                    int (*check) (EVP_PKEY *pkey))
1143 {
1144     pmeth->param_check = check;
1145 }
1146
1147 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1148                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
1149                                                            EVP_MD_CTX *mctx))
1150 {
1151     pmeth->digest_custom = digest_custom;
1152 }
1153
1154 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1155                             int (**pinit) (EVP_PKEY_CTX *ctx))
1156 {
1157     *pinit = pmeth->init;
1158 }
1159
1160 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
1161                             int (**pcopy) (EVP_PKEY_CTX *dst,
1162                                            const EVP_PKEY_CTX *src))
1163 {
1164     *pcopy = pmeth->copy;
1165 }
1166
1167 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
1168                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
1169 {
1170     *pcleanup = pmeth->cleanup;
1171 }
1172
1173 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
1174                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
1175                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
1176                                                    EVP_PKEY *pkey))
1177 {
1178     if (pparamgen_init)
1179         *pparamgen_init = pmeth->paramgen_init;
1180     if (pparamgen)
1181         *pparamgen = pmeth->paramgen;
1182 }
1183
1184 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
1185                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
1186                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
1187                                                EVP_PKEY *pkey))
1188 {
1189     if (pkeygen_init)
1190         *pkeygen_init = pmeth->keygen_init;
1191     if (pkeygen)
1192         *pkeygen = pmeth->keygen;
1193 }
1194
1195 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
1196                             int (**psign_init) (EVP_PKEY_CTX *ctx),
1197                             int (**psign) (EVP_PKEY_CTX *ctx,
1198                                            unsigned char *sig, size_t *siglen,
1199                                            const unsigned char *tbs,
1200                                            size_t tbslen))
1201 {
1202     if (psign_init)
1203         *psign_init = pmeth->sign_init;
1204     if (psign)
1205         *psign = pmeth->sign;
1206 }
1207
1208 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
1209                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
1210                               int (**pverify) (EVP_PKEY_CTX *ctx,
1211                                                const unsigned char *sig,
1212                                                size_t siglen,
1213                                                const unsigned char *tbs,
1214                                                size_t tbslen))
1215 {
1216     if (pverify_init)
1217         *pverify_init = pmeth->verify_init;
1218     if (pverify)
1219         *pverify = pmeth->verify;
1220 }
1221
1222 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
1223                                       int (**pverify_recover_init) (EVP_PKEY_CTX
1224                                                                     *ctx),
1225                                       int (**pverify_recover) (EVP_PKEY_CTX
1226                                                                *ctx,
1227                                                                unsigned char
1228                                                                *sig,
1229                                                                size_t *siglen,
1230                                                                const unsigned
1231                                                                char *tbs,
1232                                                                size_t tbslen))
1233 {
1234     if (pverify_recover_init)
1235         *pverify_recover_init = pmeth->verify_recover_init;
1236     if (pverify_recover)
1237         *pverify_recover = pmeth->verify_recover;
1238 }
1239
1240 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
1241                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
1242                                                       EVP_MD_CTX *mctx),
1243                                int (**psignctx) (EVP_PKEY_CTX *ctx,
1244                                                  unsigned char *sig,
1245                                                  size_t *siglen,
1246                                                  EVP_MD_CTX *mctx))
1247 {
1248     if (psignctx_init)
1249         *psignctx_init = pmeth->signctx_init;
1250     if (psignctx)
1251         *psignctx = pmeth->signctx;
1252 }
1253
1254 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
1255                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
1256                                                           EVP_MD_CTX *mctx),
1257                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
1258                                                      const unsigned char *sig,
1259                                                      int siglen,
1260                                                      EVP_MD_CTX *mctx))
1261 {
1262     if (pverifyctx_init)
1263         *pverifyctx_init = pmeth->verifyctx_init;
1264     if (pverifyctx)
1265         *pverifyctx = pmeth->verifyctx;
1266 }
1267
1268 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
1269                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
1270                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
1271                                                    unsigned char *out,
1272                                                    size_t *outlen,
1273                                                    const unsigned char *in,
1274                                                    size_t inlen))
1275 {
1276     if (pencrypt_init)
1277         *pencrypt_init = pmeth->encrypt_init;
1278     if (pencryptfn)
1279         *pencryptfn = pmeth->encrypt;
1280 }
1281
1282 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
1283                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
1284                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
1285                                                  unsigned char *out,
1286                                                  size_t *outlen,
1287                                                  const unsigned char *in,
1288                                                  size_t inlen))
1289 {
1290     if (pdecrypt_init)
1291         *pdecrypt_init = pmeth->decrypt_init;
1292     if (pdecrypt)
1293         *pdecrypt = pmeth->decrypt;
1294 }
1295
1296 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
1297                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
1298                               int (**pderive) (EVP_PKEY_CTX *ctx,
1299                                                unsigned char *key,
1300                                                size_t *keylen))
1301 {
1302     if (pderive_init)
1303         *pderive_init = pmeth->derive_init;
1304     if (pderive)
1305         *pderive = pmeth->derive;
1306 }
1307
1308 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
1309                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1310                                            void *p2),
1311                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
1312                                                const char *type,
1313                                                const char *value))
1314 {
1315     if (pctrl)
1316         *pctrl = pmeth->ctrl;
1317     if (pctrl_str)
1318         *pctrl_str = pmeth->ctrl_str;
1319 }
1320
1321 void EVP_PKEY_meth_get_digestsign(EVP_PKEY_METHOD *pmeth,
1322     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1323                         const unsigned char *tbs, size_t tbslen))
1324 {
1325     if (digestsign)
1326         *digestsign = pmeth->digestsign;
1327 }
1328
1329 void EVP_PKEY_meth_get_digestverify(EVP_PKEY_METHOD *pmeth,
1330     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1331                           size_t siglen, const unsigned char *tbs,
1332                           size_t tbslen))
1333 {
1334     if (digestverify)
1335         *digestverify = pmeth->digestverify;
1336 }
1337
1338 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
1339                              int (**pcheck) (EVP_PKEY *pkey))
1340 {
1341     if (pcheck != NULL)
1342         *pcheck = pmeth->check;
1343 }
1344
1345 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
1346                                     int (**pcheck) (EVP_PKEY *pkey))
1347 {
1348     if (pcheck != NULL)
1349         *pcheck = pmeth->public_check;
1350 }
1351
1352 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
1353                                    int (**pcheck) (EVP_PKEY *pkey))
1354 {
1355     if (pcheck != NULL)
1356         *pcheck = pmeth->param_check;
1357 }
1358
1359 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
1360                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
1361                                                              EVP_MD_CTX *mctx))
1362 {
1363     if (pdigest_custom != NULL)
1364         *pdigest_custom = pmeth->digest_custom;
1365 }