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->pkey.ptr == 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     propquery = NULL;
 190     /*
 191      * We were called using legacy data, or an EVP_PKEY, but an EVP_PKEY
 192      * isn't tied to a specific library context, so we fall back to the
 193      * default library context.
 194      * TODO(v3.0): an EVP_PKEY that doesn't originate from a leagacy key
 195      * structure only has the pkeys[] cache, where the first element is
 196      * considered the "origin".  Investigate if that could be a suitable
 197      * way to find a library context.
 198      */
 199     libctx = NULL;
 200
 201 # ifndef OPENSSL_NO_ENGINE
 202     if (e == NULL && pkey != NULL)
 203         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 204     /* Try to find an ENGINE which implements this method */
 205     if (e) {
 206         if (!ENGINE_init(e)) {
 207             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
 208             return NULL;
 209         }
 210     } else {
 211         e = ENGINE_get_pkey_meth_engine(id);
 212     }
 213
 214     /*
 215      * If an ENGINE handled this method look it up. Otherwise use internal
 216      * tables.
 217      */
 218     if (e)
 219         pmeth = ENGINE_get_pkey_meth(e, id);
 220     else
 221 # endif
 222         pmeth = EVP_PKEY_meth_find(id);
 223
 224     if (pmeth == NULL) {
 225 # ifndef OPENSSL_NO_ENGINE
 226         ENGINE_finish(e);
 227 # endif
 228         EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
 229         return NULL;
 230     }
 231     /* END legacy */
 232 #endif /* FIPS_MODE */
 233  common:
 234     ret = OPENSSL_zalloc(sizeof(*ret));
 235     if (ret == NULL) {
 236 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
 237         ENGINE_finish(e);
 238 #endif
 239         EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
 240         return NULL;
 241     }
 242     ret->libctx = libctx;
 243     ret->keytype = name;
 244     ret->propquery = propquery;
 245     ret->engine = e;
 246     ret->pmeth = pmeth;
 247     ret->operation = EVP_PKEY_OP_UNDEFINED;
 248     ret->pkey = pkey;
 249     if (pkey != NULL)
 250         EVP_PKEY_up_ref(pkey);
 251
 252     if (pmeth != NULL && pmeth->init != NULL) {
 253         if (pmeth->init(ret) <= 0) {
 254             ret->pmeth = NULL;
 255             EVP_PKEY_CTX_free(ret);
 256             return NULL;
 257         }
 258     }
 259
 260     return ret;
 261 }
 262
 263 /*- All methods below can also be used in FIPS_MODE */
 264
 265 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OPENSSL_CTX *libctx,
 266                                          const char *name,
 267                                          const char *propquery)
 268 {
 269     return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
 270 }
 271
 272 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OPENSSL_CTX *libctx, EVP_PKEY *pkey)
 273 {
 274     return int_ctx_new(libctx, pkey, NULL, NULL, NULL, -1);
 275 }
 276
 277 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
 278 {
 279     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 280         if (ctx->op.sig.sigprovctx != NULL && ctx->op.sig.signature != NULL)
 281             ctx->op.sig.signature->freectx(ctx->op.sig.sigprovctx);
 282         EVP_SIGNATURE_free(ctx->op.sig.signature);
 283         ctx->op.sig.sigprovctx = NULL;
 284         ctx->op.sig.signature = NULL;
 285     }
 286 /* TODO(3.0): add dependancies and uncomment this when available for fips mode */
 287 #ifndef FIPS_MODE
 288     else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 289         if (ctx->op.kex.exchprovctx != NULL && ctx->op.kex.exchange != NULL)
 290             ctx->op.kex.exchange->freectx(ctx->op.kex.exchprovctx);
 291         EVP_KEYEXCH_free(ctx->op.kex.exchange);
 292         ctx->op.kex.exchprovctx = NULL;
 293         ctx->op.kex.exchange = NULL;
 294     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
 295         if (ctx->op.ciph.ciphprovctx != NULL && ctx->op.ciph.cipher != NULL)
 296             ctx->op.ciph.cipher->freectx(ctx->op.ciph.ciphprovctx);
 297         EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
 298         ctx->op.ciph.ciphprovctx = NULL;
 299         ctx->op.ciph.cipher = NULL;
 300     }
 301 #endif
 302 }
 303
 304 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 305 {
 306     if (ctx == NULL)
 307         return;
 308     if (ctx->pmeth && ctx->pmeth->cleanup)
 309         ctx->pmeth->cleanup(ctx);
 310
 311     evp_pkey_ctx_free_old_ops(ctx);
 312     EVP_KEYMGMT_free(ctx->keymgmt);
 313
 314     EVP_PKEY_free(ctx->pkey);
 315     EVP_PKEY_free(ctx->peerkey);
 316 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
 317     ENGINE_finish(ctx->engine);
 318 #endif
 319     OPENSSL_free(ctx);
 320 }
 321
 322 #ifndef FIPS_MODE
 323
 324 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 325                              const EVP_PKEY_METHOD *meth)
 326 {
 327     if (ppkey_id)
 328         *ppkey_id = meth->pkey_id;
 329     if (pflags)
 330         *pflags = meth->flags;
 331 }
 332
 333 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 334 {
 335
 336     dst->init = src->init;
 337     dst->copy = src->copy;
 338     dst->cleanup = src->cleanup;
 339
 340     dst->paramgen_init = src->paramgen_init;
 341     dst->paramgen = src->paramgen;
 342
 343     dst->keygen_init = src->keygen_init;
 344     dst->keygen = src->keygen;
 345
 346     dst->sign_init = src->sign_init;
 347     dst->sign = src->sign;
 348
 349     dst->verify_init = src->verify_init;
 350     dst->verify = src->verify;
 351
 352     dst->verify_recover_init = src->verify_recover_init;
 353     dst->verify_recover = src->verify_recover;
 354
 355     dst->signctx_init = src->signctx_init;
 356     dst->signctx = src->signctx;
 357
 358     dst->verifyctx_init = src->verifyctx_init;
 359     dst->verifyctx = src->verifyctx;
 360
 361     dst->encrypt_init = src->encrypt_init;
 362     dst->encrypt = src->encrypt;
 363
 364     dst->decrypt_init = src->decrypt_init;
 365     dst->decrypt = src->decrypt;
 366
 367     dst->derive_init = src->derive_init;
 368     dst->derive = src->derive;
 369
 370     dst->ctrl = src->ctrl;
 371     dst->ctrl_str = src->ctrl_str;
 372
 373     dst->check = src->check;
 374 }
 375
 376 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 377 {
 378     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 379         OPENSSL_free(pmeth);
 380 }
 381
 382 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 383 {
 384     return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
 385 }
 386
 387 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 388 {
 389     return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
 390 }
 391
 392
 393 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 394 {
 395     EVP_PKEY_CTX *rctx;
 396
 397     if (((pctx->pmeth == NULL) || (pctx->pmeth->copy == NULL))
 398             && ((EVP_PKEY_CTX_IS_DERIVE_OP(pctx)
 399                  && pctx->op.kex.exchprovctx == NULL)
 400                 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)
 401                     && pctx->op.sig.sigprovctx == NULL)))
 402         return NULL;
 403 # ifndef OPENSSL_NO_ENGINE
 404     /* Make sure it's safe to copy a pkey context using an ENGINE */
 405     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 406         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
 407         return 0;
 408     }
 409 # endif
 410     rctx = OPENSSL_zalloc(sizeof(*rctx));
 411     if (rctx == NULL) {
 412         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_MALLOC_FAILURE);
 413         return NULL;
 414     }
 415
 416     if (pctx->pkey != NULL)
 417         EVP_PKEY_up_ref(pctx->pkey);
 418     rctx->pkey = pctx->pkey;
 419     rctx->operation = pctx->operation;
 420     rctx->libctx = pctx->libctx;
 421     rctx->keytype = pctx->keytype;
 422     rctx->propquery = pctx->propquery;
 423
 424     if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
 425         if (pctx->op.kex.exchange != NULL) {
 426             rctx->op.kex.exchange = pctx->op.kex.exchange;
 427             if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange)) {
 428                 OPENSSL_free(rctx);
 429                 return NULL;
 430             }
 431         }
 432         if (pctx->op.kex.exchprovctx != NULL) {
 433             if (!ossl_assert(pctx->op.kex.exchange != NULL))
 434                 return NULL;
 435             rctx->op.kex.exchprovctx
 436                 = pctx->op.kex.exchange->dupctx(pctx->op.kex.exchprovctx);
 437             if (rctx->op.kex.exchprovctx == NULL) {
 438                 EVP_KEYEXCH_free(rctx->op.kex.exchange);
 439                 OPENSSL_free(rctx);
 440                 return NULL;
 441             }
 442             return rctx;
 443         }
 444     } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
 445         if (pctx->op.sig.signature != NULL) {
 446             rctx->op.sig.signature = pctx->op.sig.signature;
 447             if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature)) {
 448                 OPENSSL_free(rctx);
 449                 return NULL;
 450             }
 451         }
 452         if (pctx->op.sig.sigprovctx != NULL) {
 453             if (!ossl_assert(pctx->op.sig.signature != NULL))
 454                 return NULL;
 455             rctx->op.sig.sigprovctx
 456                 = pctx->op.sig.signature->dupctx(pctx->op.sig.sigprovctx);
 457             if (rctx->op.sig.sigprovctx == NULL) {
 458                 EVP_SIGNATURE_free(rctx->op.sig.signature);
 459                 OPENSSL_free(rctx);
 460                 return NULL;
 461             }
 462             return rctx;
 463         }
 464     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
 465         if (pctx->op.ciph.cipher != NULL) {
 466             rctx->op.ciph.cipher = pctx->op.ciph.cipher;
 467             if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher)) {
 468                 OPENSSL_free(rctx);
 469                 return NULL;
 470             }
 471         }
 472         if (pctx->op.ciph.ciphprovctx != NULL) {
 473             if (!ossl_assert(pctx->op.ciph.cipher != NULL))
 474                 return NULL;
 475             rctx->op.ciph.ciphprovctx
 476                 = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.ciphprovctx);
 477             if (rctx->op.ciph.ciphprovctx == NULL) {
 478                 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
 479                 OPENSSL_free(rctx);
 480                 return NULL;
 481             }
 482             return rctx;
 483         }
 484     }
 485
 486     rctx->pmeth = pctx->pmeth;
 487 # ifndef OPENSSL_NO_ENGINE
 488     rctx->engine = pctx->engine;
 489 # endif
 490
 491     if (pctx->peerkey)
 492         EVP_PKEY_up_ref(pctx->peerkey);
 493     rctx->peerkey = pctx->peerkey;
 494
 495     if (pctx->pmeth->copy(rctx, pctx) > 0)
 496         return rctx;
 497
 498     rctx->pmeth = NULL;
 499     EVP_PKEY_CTX_free(rctx);
 500     return NULL;
 501
 502 }
 503
 504 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 505 {
 506     if (app_pkey_methods == NULL) {
 507         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 508         if (app_pkey_methods == NULL){
 509             EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 510             return 0;
 511         }
 512     }
 513     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 514         EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 515         return 0;
 516     }
 517     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 518     return 1;
 519 }
 520
 521 void evp_app_cleanup_int(void)
 522 {
 523     if (app_pkey_methods != NULL)
 524         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 525 }
 526
 527 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 528 {
 529     const EVP_PKEY_METHOD *ret;
 530
 531     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 532
 533     return ret == NULL ? 0 : 1;
 534 }
 535
 536 size_t EVP_PKEY_meth_get_count(void)
 537 {
 538     size_t rv = OSSL_NELEM(standard_methods);
 539
 540     if (app_pkey_methods)
 541         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 542     return rv;
 543 }
 544
 545 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 546 {
 547     if (idx < OSSL_NELEM(standard_methods))
 548         return (standard_methods[idx])();
 549     if (app_pkey_methods == NULL)
 550         return NULL;
 551     idx -= OSSL_NELEM(standard_methods);
 552     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 553         return NULL;
 554     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 555 }
 556 #endif
 557
 558 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 559 {
 560     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 561             && ctx->op.kex.exchprovctx != NULL
 562             && ctx->op.kex.exchange != NULL
 563             && ctx->op.kex.exchange->set_ctx_params != NULL)
 564         return ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.exchprovctx,
 565                                                     params);
 566     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 567             && ctx->op.sig.sigprovctx != NULL
 568             && ctx->op.sig.signature != NULL
 569             && ctx->op.sig.signature->set_ctx_params != NULL)
 570         return ctx->op.sig.signature->set_ctx_params(ctx->op.sig.sigprovctx,
 571                                                      params);
 572     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 573             && ctx->op.ciph.ciphprovctx != NULL
 574             && ctx->op.ciph.cipher != NULL
 575             && ctx->op.ciph.cipher->set_ctx_params != NULL)
 576         return ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.ciphprovctx,
 577                                                      params);
 578     return 0;
 579 }
 580
 581 #ifndef FIPS_MODE
 582 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 583 {
 584     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 585             && ctx->op.sig.sigprovctx != NULL
 586             && ctx->op.sig.signature != NULL
 587             && ctx->op.sig.signature->get_ctx_params != NULL)
 588         return ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx,
 589                                                      params);
 590     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 591             && ctx->op.ciph.ciphprovctx != NULL
 592             && ctx->op.ciph.cipher != NULL
 593             && ctx->op.ciph.cipher->get_ctx_params != NULL)
 594         return ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.ciphprovctx,
 595                                                    params);
 596     return 0;
 597 }
 598
 599 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx)
 600 {
 601     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 602             && ctx->op.sig.signature != NULL
 603             && ctx->op.sig.signature->gettable_ctx_params != NULL)
 604         return ctx->op.sig.signature->gettable_ctx_params();
 605
 606     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 607             && ctx->op.ciph.cipher != NULL
 608             && ctx->op.ciph.cipher->gettable_ctx_params != NULL)
 609         return ctx->op.ciph.cipher->gettable_ctx_params();
 610
 611     return NULL;
 612 }
 613
 614 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx)
 615 {
 616     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 617             && ctx->op.kex.exchange != NULL
 618             && ctx->op.kex.exchange->settable_ctx_params != NULL)
 619         return ctx->op.kex.exchange->settable_ctx_params();
 620     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 621             && ctx->op.sig.signature != NULL
 622             && ctx->op.sig.signature->settable_ctx_params != NULL)
 623         return ctx->op.sig.signature->settable_ctx_params();
 624     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 625             && ctx->op.ciph.cipher != NULL
 626             && ctx->op.ciph.cipher->settable_ctx_params != NULL)
 627         return ctx->op.ciph.cipher->settable_ctx_params();
 628
 629     return NULL;
 630 }
 631
 632 # ifndef OPENSSL_NO_DH
 633 int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad)
 634 {
 635     OSSL_PARAM dh_pad_params[2];
 636     unsigned int upad = pad;
 637
 638     /* We use EVP_PKEY_CTX_ctrl return values */
 639     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 640         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 641         return -2;
 642     }
 643
 644     /* TODO(3.0): Remove this eventually when no more legacy */
 645     if (ctx->op.kex.exchprovctx == NULL)
 646         return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_DERIVE,
 647                                  EVP_PKEY_CTRL_DH_PAD, pad, NULL);
 648
 649     dh_pad_params[0] = OSSL_PARAM_construct_uint(OSSL_EXCHANGE_PARAM_PAD, &upad);
 650     dh_pad_params[1] = OSSL_PARAM_construct_end();
 651
 652     return EVP_PKEY_CTX_set_params(ctx, dh_pad_params);
 653 }
 654 # endif
 655
 656 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
 657 {
 658     OSSL_PARAM sig_md_params[3], *p = sig_md_params;
 659     /* 80 should be big enough */
 660     char name[80] = "";
 661     const EVP_MD *tmp;
 662
 663     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 664         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 665         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 666         return -2;
 667     }
 668
 669     /* TODO(3.0): Remove this eventually when no more legacy */
 670     if (ctx->op.sig.sigprovctx == NULL)
 671         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 672                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
 673
 674     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 675                                             name,
 676                                             sizeof(name));
 677     *p++ = OSSL_PARAM_construct_end();
 678
 679     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
 680         return 0;
 681
 682     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
 683     if (tmp == NULL)
 684         return 0;
 685
 686     *md = tmp;
 687
 688     return 1;
 689 }
 690
 691 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 692 {
 693     OSSL_PARAM sig_md_params[3], *p = sig_md_params;
 694     size_t mdsize;
 695     const char *name;
 696
 697     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 698         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 699         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 700         return -2;
 701     }
 702
 703     /* TODO(3.0): Remove this eventually when no more legacy */
 704     if (ctx->op.sig.sigprovctx == NULL)
 705         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 706                                  EVP_PKEY_CTRL_MD, 0, (void *)(md));
 707
 708     if (md == NULL) {
 709         name = "";
 710         mdsize = 0;
 711     } else {
 712         mdsize = EVP_MD_size(md);
 713         name = EVP_MD_name(md);
 714     }
 715
 716     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 717                                             /*
 718                                              * Cast away the const. This is read
 719                                              * only so should be safe
 720                                              */
 721                                             (char *)name,
 722                                             strlen(name) + 1);
 723     *p++ = OSSL_PARAM_construct_size_t(OSSL_SIGNATURE_PARAM_DIGEST_SIZE,
 724                                        &mdsize);
 725     *p++ = OSSL_PARAM_construct_end();
 726
 727     return EVP_PKEY_CTX_set_params(ctx, sig_md_params);
 728 }
 729
 730 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
 731                                 int cmd, int p1, void *p2)
 732 {
 733     switch (cmd) {
 734 # ifndef OPENSSL_NO_DH
 735     case EVP_PKEY_CTRL_DH_PAD:
 736         return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
 737 # endif
 738     case EVP_PKEY_CTRL_MD:
 739         return EVP_PKEY_CTX_set_signature_md(ctx, p2);
 740     case EVP_PKEY_CTRL_GET_MD:
 741         return EVP_PKEY_CTX_get_signature_md(ctx, p2);
 742     case EVP_PKEY_CTRL_RSA_PADDING:
 743         return EVP_PKEY_CTX_set_rsa_padding(ctx, p1);
 744     case EVP_PKEY_CTRL_GET_RSA_PADDING:
 745         return EVP_PKEY_CTX_get_rsa_padding(ctx, p2);
 746     case EVP_PKEY_CTRL_RSA_OAEP_MD:
 747         return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
 748     case EVP_PKEY_CTRL_GET_RSA_OAEP_MD:
 749         return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
 750     case EVP_PKEY_CTRL_RSA_MGF1_MD:
 751         return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
 752     case EVP_PKEY_CTRL_GET_RSA_MGF1_MD:
 753         return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
 754     case EVP_PKEY_CTRL_RSA_OAEP_LABEL:
 755         return EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, p2, p1);
 756     case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL:
 757         return EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, (unsigned char **)p2);
 758     case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
 759     case EVP_PKEY_CTRL_PKCS7_DECRYPT:
 760 # ifndef OPENSSL_NO_CMS
 761     case EVP_PKEY_CTRL_CMS_DECRYPT:
 762     case EVP_PKEY_CTRL_CMS_ENCRYPT:
 763 # endif
 764         if (ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS)
 765             return 1;
 766         ERR_raise(ERR_LIB_EVP,
 767                   EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 768         return -2;
 769     }
 770     return 0;
 771 }
 772
 773 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
 774                       int cmd, int p1, void *p2)
 775 {
 776     int ret;
 777
 778     if (ctx == NULL) {
 779         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 780         return -2;
 781     }
 782
 783     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
 784             || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 785                 && ctx->op.sig.sigprovctx != NULL)
 786             || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 787                 && ctx->op.ciph.ciphprovctx != NULL))
 788         return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
 789
 790     if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
 791         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 792         return -2;
 793     }
 794     if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
 795         return -1;
 796
 797     /* Skip the operation checks since this is called in a very early stage */
 798     if (ctx->pmeth->digest_custom != NULL)
 799         goto doit;
 800
 801     if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
 802         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
 803         return -1;
 804     }
 805
 806     if ((optype != -1) && !(ctx->operation & optype)) {
 807         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
 808         return -1;
 809     }
 810
 811  doit:
 812     ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
 813
 814     if (ret == -2)
 815         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 816
 817     return ret;
 818 }
 819
 820 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
 821                              int cmd, uint64_t value)
 822 {
 823     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
 824 }
 825
 826 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
 827                                     const char *value)
 828 {
 829 # ifndef OPENSSL_NO_DH
 830     if (strcmp(name, "dh_pad") == 0) {
 831         int pad;
 832
 833         pad = atoi(value);
 834         return EVP_PKEY_CTX_set_dh_pad(ctx, pad);
 835     }
 836 # endif
 837     if (strcmp(name, "digest") == 0) {
 838         int ret;
 839         EVP_MD *md;
 840
 841         if (!EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx) || ctx->op.sig.signature == NULL)
 842             return 0;
 843         md = EVP_MD_fetch(ossl_provider_library_context(ctx->op.sig.signature->prov),
 844                           value, NULL);
 845         if (md == NULL)
 846             return 0;
 847         ret = EVP_PKEY_CTX_set_signature_md(ctx, md);
 848         EVP_MD_meth_free(md);
 849         return ret;
 850     }
 851
 852     if (strcmp(name, "rsa_padding_mode") == 0) {
 853         int pm;
 854
 855         if (strcmp(value, "pkcs1") == 0) {
 856             pm = RSA_PKCS1_PADDING;
 857         } else if (strcmp(value, "sslv23") == 0) {
 858             pm = RSA_SSLV23_PADDING;
 859         } else if (strcmp(value, "none") == 0) {
 860             pm = RSA_NO_PADDING;
 861         } else if (strcmp(value, "oeap") == 0) {
 862             pm = RSA_PKCS1_OAEP_PADDING;
 863         } else if (strcmp(value, "oaep") == 0) {
 864             pm = RSA_PKCS1_OAEP_PADDING;
 865         } else if (strcmp(value, "x931") == 0) {
 866             pm = RSA_X931_PADDING;
 867         } else if (strcmp(value, "pss") == 0) {
 868             pm = RSA_PKCS1_PSS_PADDING;
 869         } else {
 870             ERR_raise(ERR_LIB_RSA, RSA_R_UNKNOWN_PADDING_TYPE);
 871             return -2;
 872         }
 873         return EVP_PKEY_CTX_set_rsa_padding(ctx, pm);
 874     }
 875
 876     if (strcmp(name, "rsa_mgf1_md") == 0)
 877         return EVP_PKEY_CTX_set_rsa_mgf1_md_name(ctx, value, NULL);
 878
 879     if (strcmp(name, "rsa_oaep_md") == 0)
 880         return EVP_PKEY_CTX_set_rsa_oaep_md_name(ctx, value, NULL);
 881
 882     if (strcmp(name, "rsa_oaep_label") == 0) {
 883         unsigned char *lab;
 884         long lablen;
 885         int ret;
 886
 887         lab = OPENSSL_hexstr2buf(value, &lablen);
 888         if (lab == NULL)
 889             return 0;
 890         ret = EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, lab, lablen);
 891         if (ret <= 0)
 892             OPENSSL_free(lab);
 893         return ret;
 894     }
 895
 896
 897
 898     return 0;
 899 }
 900
 901 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
 902                           const char *name, const char *value)
 903 {
 904     if (ctx == NULL) {
 905         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 906         return -2;
 907     }
 908
 909     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
 910             || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 911                 && ctx->op.sig.sigprovctx != NULL)
 912             || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 913                 && ctx->op.ciph.ciphprovctx != NULL))
 914         return legacy_ctrl_str_to_param(ctx, name, value);
 915
 916     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
 917         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 918         return -2;
 919     }
 920     if (strcmp(name, "digest") == 0)
 921         return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
 922                                value);
 923     return ctx->pmeth->ctrl_str(ctx, name, value);
 924 }
 925
 926 /* Utility functions to send a string of hex string to a ctrl */
 927
 928 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
 929 {
 930     size_t len;
 931
 932     len = strlen(str);
 933     if (len > INT_MAX)
 934         return -1;
 935     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
 936 }
 937
 938 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
 939 {
 940     unsigned char *bin;
 941     long binlen;
 942     int rv = -1;
 943
 944     bin = OPENSSL_hexstr2buf(hex, &binlen);
 945     if (bin == NULL)
 946         return 0;
 947     if (binlen <= INT_MAX)
 948         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
 949     OPENSSL_free(bin);
 950     return rv;
 951 }
 952
 953 /* Pass a message digest to a ctrl */
 954 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
 955 {
 956     const EVP_MD *m;
 957
 958     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
 959         EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
 960         return 0;
 961     }
 962     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
 963 }
 964
 965 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
 966 {
 967     return ctx->operation;
 968 }
 969
 970 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
 971 {
 972     ctx->keygen_info = dat;
 973     ctx->keygen_info_count = datlen;
 974 }
 975
 976 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
 977 {
 978     ctx->data = data;
 979 }
 980
 981 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
 982 {
 983     return ctx->data;
 984 }
 985
 986 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
 987 {
 988     return ctx->pkey;
 989 }
 990
 991 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
 992 {
 993     return ctx->peerkey;
 994 }
 995
 996 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
 997 {
 998     ctx->app_data = data;
 999 }
1000
1001 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
1002 {
1003     return ctx->app_data;
1004 }
1005
1006 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1007                             int (*init) (EVP_PKEY_CTX *ctx))
1008 {
1009     pmeth->init = init;
1010 }
1011
1012 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1013                             int (*copy) (EVP_PKEY_CTX *dst,
1014                                          const EVP_PKEY_CTX *src))
1015 {
1016     pmeth->copy = copy;
1017 }
1018
1019 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1020                                void (*cleanup) (EVP_PKEY_CTX *ctx))
1021 {
1022     pmeth->cleanup = cleanup;
1023 }
1024
1025 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1026                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1027                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
1028                                                  EVP_PKEY *pkey))
1029 {
1030     pmeth->paramgen_init = paramgen_init;
1031     pmeth->paramgen = paramgen;
1032 }
1033
1034 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1035                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
1036                               int (*keygen) (EVP_PKEY_CTX *ctx,
1037                                              EVP_PKEY *pkey))
1038 {
1039     pmeth->keygen_init = keygen_init;
1040     pmeth->keygen = keygen;
1041 }
1042
1043 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1044                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1045                             int (*sign) (EVP_PKEY_CTX *ctx,
1046                                          unsigned char *sig, size_t *siglen,
1047                                          const unsigned char *tbs,
1048                                          size_t tbslen))
1049 {
1050     pmeth->sign_init = sign_init;
1051     pmeth->sign = sign;
1052 }
1053
1054 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1055                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1056                               int (*verify) (EVP_PKEY_CTX *ctx,
1057                                              const unsigned char *sig,
1058                                              size_t siglen,
1059                                              const unsigned char *tbs,
1060                                              size_t tbslen))
1061 {
1062     pmeth->verify_init = verify_init;
1063     pmeth->verify = verify;
1064 }
1065
1066 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1067                                       int (*verify_recover_init) (EVP_PKEY_CTX
1068                                                                   *ctx),
1069                                       int (*verify_recover) (EVP_PKEY_CTX
1070                                                              *ctx,
1071                                                              unsigned char
1072                                                              *sig,
1073                                                              size_t *siglen,
1074                                                              const unsigned
1075                                                              char *tbs,
1076                                                              size_t tbslen))
1077 {
1078     pmeth->verify_recover_init = verify_recover_init;
1079     pmeth->verify_recover = verify_recover;
1080 }
1081
1082 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1083                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1084                                                     EVP_MD_CTX *mctx),
1085                                int (*signctx) (EVP_PKEY_CTX *ctx,
1086                                                unsigned char *sig,
1087                                                size_t *siglen,
1088                                                EVP_MD_CTX *mctx))
1089 {
1090     pmeth->signctx_init = signctx_init;
1091     pmeth->signctx = signctx;
1092 }
1093
1094 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1095                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1096                                                         EVP_MD_CTX *mctx),
1097                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1098                                                    const unsigned char *sig,
1099                                                    int siglen,
1100                                                    EVP_MD_CTX *mctx))
1101 {
1102     pmeth->verifyctx_init = verifyctx_init;
1103     pmeth->verifyctx = verifyctx;
1104 }
1105
1106 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1107                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1108                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1109                                                  unsigned char *out,
1110                                                  size_t *outlen,
1111                                                  const unsigned char *in,
1112                                                  size_t inlen))
1113 {
1114     pmeth->encrypt_init = encrypt_init;
1115     pmeth->encrypt = encryptfn;
1116 }
1117
1118 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1119                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1120                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1121                                                unsigned char *out,
1122                                                size_t *outlen,
1123                                                const unsigned char *in,
1124                                                size_t inlen))
1125 {
1126     pmeth->decrypt_init = decrypt_init;
1127     pmeth->decrypt = decrypt;
1128 }
1129
1130 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1131                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1132                               int (*derive) (EVP_PKEY_CTX *ctx,
1133                                              unsigned char *key,
1134                                              size_t *keylen))
1135 {
1136     pmeth->derive_init = derive_init;
1137     pmeth->derive = derive;
1138 }
1139
1140 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1141                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1142                                          void *p2),
1143                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1144                                              const char *type,
1145                                              const char *value))
1146 {
1147     pmeth->ctrl = ctrl;
1148     pmeth->ctrl_str = ctrl_str;
1149 }
1150
1151 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1152     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1153                        const unsigned char *tbs, size_t tbslen))
1154 {
1155     pmeth->digestsign = digestsign;
1156 }
1157
1158 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1159     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1160                          size_t siglen, const unsigned char *tbs,
1161                          size_t tbslen))
1162 {
1163     pmeth->digestverify = digestverify;
1164 }
1165
1166 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1167                              int (*check) (EVP_PKEY *pkey))
1168 {
1169     pmeth->check = check;
1170 }
1171
1172 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1173                                     int (*check) (EVP_PKEY *pkey))
1174 {
1175     pmeth->public_check = check;
1176 }
1177
1178 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1179                                    int (*check) (EVP_PKEY *pkey))
1180 {
1181     pmeth->param_check = check;
1182 }
1183
1184 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1185                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
1186                                                            EVP_MD_CTX *mctx))
1187 {
1188     pmeth->digest_custom = digest_custom;
1189 }
1190
1191 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1192                             int (**pinit) (EVP_PKEY_CTX *ctx))
1193 {
1194     *pinit = pmeth->init;
1195 }
1196
1197 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
1198                             int (**pcopy) (EVP_PKEY_CTX *dst,
1199                                            const EVP_PKEY_CTX *src))
1200 {
1201     *pcopy = pmeth->copy;
1202 }
1203
1204 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
1205                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
1206 {
1207     *pcleanup = pmeth->cleanup;
1208 }
1209
1210 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
1211                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
1212                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
1213                                                    EVP_PKEY *pkey))
1214 {
1215     if (pparamgen_init)
1216         *pparamgen_init = pmeth->paramgen_init;
1217     if (pparamgen)
1218         *pparamgen = pmeth->paramgen;
1219 }
1220
1221 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
1222                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
1223                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
1224                                                EVP_PKEY *pkey))
1225 {
1226     if (pkeygen_init)
1227         *pkeygen_init = pmeth->keygen_init;
1228     if (pkeygen)
1229         *pkeygen = pmeth->keygen;
1230 }
1231
1232 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
1233                             int (**psign_init) (EVP_PKEY_CTX *ctx),
1234                             int (**psign) (EVP_PKEY_CTX *ctx,
1235                                            unsigned char *sig, size_t *siglen,
1236                                            const unsigned char *tbs,
1237                                            size_t tbslen))
1238 {
1239     if (psign_init)
1240         *psign_init = pmeth->sign_init;
1241     if (psign)
1242         *psign = pmeth->sign;
1243 }
1244
1245 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
1246                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
1247                               int (**pverify) (EVP_PKEY_CTX *ctx,
1248                                                const unsigned char *sig,
1249                                                size_t siglen,
1250                                                const unsigned char *tbs,
1251                                                size_t tbslen))
1252 {
1253     if (pverify_init)
1254         *pverify_init = pmeth->verify_init;
1255     if (pverify)
1256         *pverify = pmeth->verify;
1257 }
1258
1259 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
1260                                       int (**pverify_recover_init) (EVP_PKEY_CTX
1261                                                                     *ctx),
1262                                       int (**pverify_recover) (EVP_PKEY_CTX
1263                                                                *ctx,
1264                                                                unsigned char
1265                                                                *sig,
1266                                                                size_t *siglen,
1267                                                                const unsigned
1268                                                                char *tbs,
1269                                                                size_t tbslen))
1270 {
1271     if (pverify_recover_init)
1272         *pverify_recover_init = pmeth->verify_recover_init;
1273     if (pverify_recover)
1274         *pverify_recover = pmeth->verify_recover;
1275 }
1276
1277 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
1278                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
1279                                                       EVP_MD_CTX *mctx),
1280                                int (**psignctx) (EVP_PKEY_CTX *ctx,
1281                                                  unsigned char *sig,
1282                                                  size_t *siglen,
1283                                                  EVP_MD_CTX *mctx))
1284 {
1285     if (psignctx_init)
1286         *psignctx_init = pmeth->signctx_init;
1287     if (psignctx)
1288         *psignctx = pmeth->signctx;
1289 }
1290
1291 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
1292                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
1293                                                           EVP_MD_CTX *mctx),
1294                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
1295                                                      const unsigned char *sig,
1296                                                      int siglen,
1297                                                      EVP_MD_CTX *mctx))
1298 {
1299     if (pverifyctx_init)
1300         *pverifyctx_init = pmeth->verifyctx_init;
1301     if (pverifyctx)
1302         *pverifyctx = pmeth->verifyctx;
1303 }
1304
1305 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
1306                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
1307                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
1308                                                    unsigned char *out,
1309                                                    size_t *outlen,
1310                                                    const unsigned char *in,
1311                                                    size_t inlen))
1312 {
1313     if (pencrypt_init)
1314         *pencrypt_init = pmeth->encrypt_init;
1315     if (pencryptfn)
1316         *pencryptfn = pmeth->encrypt;
1317 }
1318
1319 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
1320                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
1321                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
1322                                                  unsigned char *out,
1323                                                  size_t *outlen,
1324                                                  const unsigned char *in,
1325                                                  size_t inlen))
1326 {
1327     if (pdecrypt_init)
1328         *pdecrypt_init = pmeth->decrypt_init;
1329     if (pdecrypt)
1330         *pdecrypt = pmeth->decrypt;
1331 }
1332
1333 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
1334                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
1335                               int (**pderive) (EVP_PKEY_CTX *ctx,
1336                                                unsigned char *key,
1337                                                size_t *keylen))
1338 {
1339     if (pderive_init)
1340         *pderive_init = pmeth->derive_init;
1341     if (pderive)
1342         *pderive = pmeth->derive;
1343 }
1344
1345 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
1346                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1347                                            void *p2),
1348                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
1349                                                const char *type,
1350                                                const char *value))
1351 {
1352     if (pctrl)
1353         *pctrl = pmeth->ctrl;
1354     if (pctrl_str)
1355         *pctrl_str = pmeth->ctrl_str;
1356 }
1357
1358 void EVP_PKEY_meth_get_digestsign(EVP_PKEY_METHOD *pmeth,
1359     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1360                         const unsigned char *tbs, size_t tbslen))
1361 {
1362     if (digestsign)
1363         *digestsign = pmeth->digestsign;
1364 }
1365
1366 void EVP_PKEY_meth_get_digestverify(EVP_PKEY_METHOD *pmeth,
1367     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1368                           size_t siglen, const unsigned char *tbs,
1369                           size_t tbslen))
1370 {
1371     if (digestverify)
1372         *digestverify = pmeth->digestverify;
1373 }
1374
1375 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
1376                              int (**pcheck) (EVP_PKEY *pkey))
1377 {
1378     if (pcheck != NULL)
1379         *pcheck = pmeth->check;
1380 }
1381
1382 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
1383                                     int (**pcheck) (EVP_PKEY *pkey))
1384 {
1385     if (pcheck != NULL)
1386         *pcheck = pmeth->public_check;
1387 }
1388
1389 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
1390                                    int (**pcheck) (EVP_PKEY *pkey))
1391 {
1392     if (pcheck != NULL)
1393         *pcheck = pmeth->param_check;
1394 }
1395
1396 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
1397                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
1398                                                              EVP_MD_CTX *mctx))
1399 {
1400     if (pdigest_custom != NULL)
1401         *pdigest_custom = pmeth->digest_custom;
1402 }
1403
1404 #endif /* FIPS_MODE */