crypto/evp/pmeth_lib.c

   1
   2 /*
   3  * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
   4  *
   5  * Licensed under the Apache License 2.0 (the "License").  You may not use
   6  * this file except in compliance with the License.  You can obtain a copy
   7  * in the file LICENSE in the source distribution or at
   8  * https://www.openssl.org/source/license.html
   9  */
  10
  11 /*
  12  * DH low level APIs are deprecated for public use, but still ok for
  13  * internal use.
  14  */
  15 #include "internal/deprecated.h"
  16
  17 #include <stdio.h>
  18 #include <stdlib.h>
  19 #include <openssl/engine.h>
  20 #include <openssl/evp.h>
  21 #include <openssl/x509v3.h>
  22 #include <openssl/core_names.h>
  23 #include <openssl/dh.h>
  24 #include <openssl/rsa.h>
  25 #include "internal/cryptlib.h"
  26 #include "crypto/asn1.h"
  27 #include "crypto/evp.h"
  28 #include "internal/numbers.h"
  29 #include "internal/provider.h"
  30 #include "evp_local.h"
  31
  32 #ifndef FIPS_MODE
  33
  34 typedef const EVP_PKEY_METHOD *(*pmeth_fn)(void);
  35 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
  36
  37 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
  38
  39 /* This array needs to be in order of NIDs */
  40 static pmeth_fn standard_methods[] = {
  41 # ifndef OPENSSL_NO_RSA
  42     rsa_pkey_method,
  43 # endif
  44 # ifndef OPENSSL_NO_DH
  45     dh_pkey_method,
  46 # endif
  47 # ifndef OPENSSL_NO_DSA
  48     dsa_pkey_method,
  49 # endif
  50 # ifndef OPENSSL_NO_EC
  51     ec_pkey_method,
  52 # endif
  53     hmac_pkey_method,
  54 # ifndef OPENSSL_NO_CMAC
  55     cmac_pkey_method,
  56 # endif
  57 # ifndef OPENSSL_NO_RSA
  58     rsa_pss_pkey_method,
  59 # endif
  60 # ifndef OPENSSL_NO_DH
  61     dhx_pkey_method,
  62 # endif
  63 # ifndef OPENSSL_NO_SCRYPT
  64     scrypt_pkey_method,
  65 # endif
  66     tls1_prf_pkey_method,
  67 # ifndef OPENSSL_NO_EC
  68     ecx25519_pkey_method,
  69     ecx448_pkey_method,
  70 # endif
  71     hkdf_pkey_method,
  72 # ifndef OPENSSL_NO_POLY1305
  73     poly1305_pkey_method,
  74 # endif
  75 # ifndef OPENSSL_NO_SIPHASH
  76     siphash_pkey_method,
  77 # endif
  78 # ifndef OPENSSL_NO_EC
  79     ed25519_pkey_method,
  80     ed448_pkey_method,
  81 # endif
  82 # ifndef OPENSSL_NO_SM2
  83     sm2_pkey_method,
  84 # endif
  85 };
  86
  87 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  88
  89 static int pmeth_func_cmp(const EVP_PKEY_METHOD *const *a, pmeth_fn const *b)
  90 {
  91     return ((*a)->pkey_id - ((**b)())->pkey_id);
  92 }
  93
  94 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, pmeth_fn, pmeth_func);
  95
  96 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  97                      const EVP_PKEY_METHOD *const *b)
  98 {
  99     return ((*a)->pkey_id - (*b)->pkey_id);
 100 }
 101
 102 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
 103 {
 104     pmeth_fn *ret;
 105     EVP_PKEY_METHOD tmp;
 106     const EVP_PKEY_METHOD *t = &tmp;
 107
 108     tmp.pkey_id = type;
 109     if (app_pkey_methods) {
 110         int idx;
 111         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
 112         if (idx >= 0)
 113             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 114     }
 115     ret = OBJ_bsearch_pmeth_func(&t, standard_methods,
 116                                  sizeof(standard_methods) /
 117                                  sizeof(pmeth_fn));
 118     if (ret == NULL || *ret == NULL)
 119         return NULL;
 120     return (**ret)();
 121 }
 122
 123 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 124 {
 125     EVP_PKEY_METHOD *pmeth;
 126
 127     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 128     if (pmeth == NULL) {
 129         EVPerr(EVP_F_EVP_PKEY_METH_NEW, ERR_R_MALLOC_FAILURE);
 130         return NULL;
 131     }
 132
 133     pmeth->pkey_id = id;
 134     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 135     return pmeth;
 136 }
 137 #endif /* FIPS_MODE */
 138
 139 static EVP_PKEY_CTX *int_ctx_new(OPENSSL_CTX *libctx,
 140                                  EVP_PKEY *pkey, ENGINE *e,
 141                                  const char *keytype, const char *propquery,
 142                                  int id)
 143
 144 {
 145     EVP_PKEY_CTX *ret;
 146     const EVP_PKEY_METHOD *pmeth = NULL;
 147     EVP_KEYMGMT *keymgmt = NULL;
 148
 149     /*
 150      * When using providers, the context is bound to the algo implementation
 151      * later.
 152      */
 153     if (pkey == NULL && e == NULL && id == -1)
 154         goto common;
 155
 156     /*
 157      * If the key doesn't contain anything legacy, then it must be provided,
 158      * so we extract the necessary information and use that.
 159      */
 160     if (pkey != NULL && pkey->type == EVP_PKEY_NONE) {
 161         /* If we have an engine, something went wrong somewhere... */
 162         if (!ossl_assert(e == NULL))
 163             return NULL;
 164         keytype = evp_first_name(pkey->keymgmt->prov, pkey->keymgmt->name_id);
 165         goto common;
 166     }
 167 #ifndef FIPS_MODE
 168     /* TODO(3.0) Legacy code should be removed when all is provider based */
 169     /* BEGIN legacy */
 170     if (id == -1) {
 171         if (pkey == NULL)
 172             return NULL;
 173         id = pkey->type;
 174     }
 175
 176     /*
 177      * Here, we extract what information we can for the purpose of
 178      * supporting usage with implementations from providers, to make
 179      * for a smooth transition from legacy stuff to provider based stuff.
 180      *
 181      * If an engine is given, this is entirely legacy, and we should not
 182      * pretend anything else, so we only set the name when no engine is
 183      * given.  If both are already given, someone made a mistake, and
 184      * since that can only happen internally, it's safe to make an
 185      * assertion.
 186      */
 187     if (!ossl_assert(e == NULL || keytype == NULL))
 188         return NULL;
 189     if (e == NULL)
 190         keytype = OBJ_nid2sn(id);
 191
 192 # ifndef OPENSSL_NO_ENGINE
 193     if (e == NULL && pkey != NULL)
 194         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 195     /* Try to find an ENGINE which implements this method */
 196     if (e) {
 197         if (!ENGINE_init(e)) {
 198             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
 199             return NULL;
 200         }
 201     } else {
 202         e = ENGINE_get_pkey_meth_engine(id);
 203     }
 204
 205     /*
 206      * If an ENGINE handled this method look it up. Otherwise use internal
 207      * tables.
 208      */
 209     if (e)
 210         pmeth = ENGINE_get_pkey_meth(e, id);
 211     else
 212 # endif
 213         pmeth = EVP_PKEY_meth_find(id);
 214
 215     if (pmeth == NULL) {
 216 # ifndef OPENSSL_NO_ENGINE
 217         ENGINE_finish(e);
 218 # endif
 219         EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
 220         return NULL;
 221     }
 222     /* END legacy */
 223 #endif /* FIPS_MODE */
 224  common:
 225     /*
 226      * If there's no engine and there's a name, we try fetching a provider
 227      * implementation.
 228      */
 229     if (e == NULL && keytype != NULL) {
 230         /* This could fail so ignore errors */
 231         ERR_set_mark();
 232         keymgmt = EVP_KEYMGMT_fetch(libctx, keytype, propquery);
 233         ERR_pop_to_mark();
 234     }
 235
 236     ret = OPENSSL_zalloc(sizeof(*ret));
 237     if (ret == NULL) {
 238 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
 239         ENGINE_finish(e);
 240 #endif
 241         EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
 242         return NULL;
 243     }
 244     ret->libctx = libctx;
 245     ret->propquery = propquery;
 246     ret->keytype = keytype;
 247     ret->keymgmt = keymgmt;
 248     ret->engine = e;
 249     ret->pmeth = pmeth;
 250     ret->operation = EVP_PKEY_OP_UNDEFINED;
 251     ret->pkey = pkey;
 252     if (pkey != NULL)
 253         EVP_PKEY_up_ref(pkey);
 254
 255     if (pmeth != NULL && pmeth->init != NULL) {
 256         if (pmeth->init(ret) <= 0) {
 257             ret->pmeth = NULL;
 258             EVP_PKEY_CTX_free(ret);
 259             return NULL;
 260         }
 261     }
 262
 263     return ret;
 264 }
 265
 266 /*- All methods below can also be used in FIPS_MODE */
 267
 268 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_name(OPENSSL_CTX *libctx,
 269                                          const char *name,
 270                                          const char *propquery)
 271 {
 272     return int_ctx_new(libctx, NULL, NULL, name, propquery, -1);
 273 }
 274
 275 EVP_PKEY_CTX *EVP_PKEY_CTX_new_from_pkey(OPENSSL_CTX *libctx, EVP_PKEY *pkey,
 276                                          const char *propquery)
 277 {
 278     return int_ctx_new(libctx, pkey, NULL, NULL, propquery, -1);
 279 }
 280
 281 void evp_pkey_ctx_free_old_ops(EVP_PKEY_CTX *ctx)
 282 {
 283     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 284         if (ctx->op.sig.sigprovctx != NULL && ctx->op.sig.signature != NULL)
 285             ctx->op.sig.signature->freectx(ctx->op.sig.sigprovctx);
 286         EVP_SIGNATURE_free(ctx->op.sig.signature);
 287         ctx->op.sig.sigprovctx = NULL;
 288         ctx->op.sig.signature = NULL;
 289     } else if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 290         if (ctx->op.kex.exchprovctx != NULL && ctx->op.kex.exchange != NULL)
 291             ctx->op.kex.exchange->freectx(ctx->op.kex.exchprovctx);
 292         EVP_KEYEXCH_free(ctx->op.kex.exchange);
 293         ctx->op.kex.exchprovctx = NULL;
 294         ctx->op.kex.exchange = NULL;
 295     }
 296 /* TODO(3.0): add dependancies and uncomment this when available for fips mode */
 297 #ifndef FIPS_MODE
 298     else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)) {
 299         if (ctx->op.ciph.ciphprovctx != NULL && ctx->op.ciph.cipher != NULL)
 300             ctx->op.ciph.cipher->freectx(ctx->op.ciph.ciphprovctx);
 301         EVP_ASYM_CIPHER_free(ctx->op.ciph.cipher);
 302         ctx->op.ciph.ciphprovctx = NULL;
 303         ctx->op.ciph.cipher = NULL;
 304     } else if (EVP_PKEY_CTX_IS_GEN_OP(ctx)) {
 305         if (ctx->op.keymgmt.genctx != NULL && ctx->keymgmt != NULL)
 306             evp_keymgmt_gen_cleanup(ctx->keymgmt, ctx->op.keymgmt.genctx);
 307     }
 308 #endif
 309 }
 310
 311 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 312 {
 313     if (ctx == NULL)
 314         return;
 315     if (ctx->pmeth && ctx->pmeth->cleanup)
 316         ctx->pmeth->cleanup(ctx);
 317
 318     evp_pkey_ctx_free_old_ops(ctx);
 319     EVP_KEYMGMT_free(ctx->keymgmt);
 320
 321     EVP_PKEY_free(ctx->pkey);
 322     EVP_PKEY_free(ctx->peerkey);
 323 #if !defined(OPENSSL_NO_ENGINE) && !defined(FIPS_MODE)
 324     ENGINE_finish(ctx->engine);
 325 #endif
 326     OPENSSL_free(ctx);
 327 }
 328
 329 #ifndef FIPS_MODE
 330
 331 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 332                              const EVP_PKEY_METHOD *meth)
 333 {
 334     if (ppkey_id)
 335         *ppkey_id = meth->pkey_id;
 336     if (pflags)
 337         *pflags = meth->flags;
 338 }
 339
 340 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 341 {
 342
 343     dst->init = src->init;
 344     dst->copy = src->copy;
 345     dst->cleanup = src->cleanup;
 346
 347     dst->paramgen_init = src->paramgen_init;
 348     dst->paramgen = src->paramgen;
 349
 350     dst->keygen_init = src->keygen_init;
 351     dst->keygen = src->keygen;
 352
 353     dst->sign_init = src->sign_init;
 354     dst->sign = src->sign;
 355
 356     dst->verify_init = src->verify_init;
 357     dst->verify = src->verify;
 358
 359     dst->verify_recover_init = src->verify_recover_init;
 360     dst->verify_recover = src->verify_recover;
 361
 362     dst->signctx_init = src->signctx_init;
 363     dst->signctx = src->signctx;
 364
 365     dst->verifyctx_init = src->verifyctx_init;
 366     dst->verifyctx = src->verifyctx;
 367
 368     dst->encrypt_init = src->encrypt_init;
 369     dst->encrypt = src->encrypt;
 370
 371     dst->decrypt_init = src->decrypt_init;
 372     dst->decrypt = src->decrypt;
 373
 374     dst->derive_init = src->derive_init;
 375     dst->derive = src->derive;
 376
 377     dst->ctrl = src->ctrl;
 378     dst->ctrl_str = src->ctrl_str;
 379
 380     dst->check = src->check;
 381 }
 382
 383 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 384 {
 385     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 386         OPENSSL_free(pmeth);
 387 }
 388
 389 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 390 {
 391     return int_ctx_new(NULL, pkey, e, NULL, NULL, -1);
 392 }
 393
 394 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 395 {
 396     return int_ctx_new(NULL, NULL, e, NULL, NULL, id);
 397 }
 398
 399 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 400 {
 401     EVP_PKEY_CTX *rctx;
 402
 403     if (((pctx->pmeth == NULL) || (pctx->pmeth->copy == NULL))
 404             && ((EVP_PKEY_CTX_IS_DERIVE_OP(pctx)
 405                  && pctx->op.kex.exchprovctx == NULL)
 406                 || (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)
 407                     && pctx->op.sig.sigprovctx == NULL)))
 408         return NULL;
 409 # ifndef OPENSSL_NO_ENGINE
 410     /* Make sure it's safe to copy a pkey context using an ENGINE */
 411     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 412         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
 413         return 0;
 414     }
 415 # endif
 416     rctx = OPENSSL_zalloc(sizeof(*rctx));
 417     if (rctx == NULL) {
 418         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_MALLOC_FAILURE);
 419         return NULL;
 420     }
 421
 422     if (pctx->pkey != NULL)
 423         EVP_PKEY_up_ref(pctx->pkey);
 424     rctx->pkey = pctx->pkey;
 425     rctx->operation = pctx->operation;
 426     rctx->libctx = pctx->libctx;
 427     rctx->keytype = pctx->keytype;
 428     rctx->propquery = pctx->propquery;
 429
 430     if (EVP_PKEY_CTX_IS_DERIVE_OP(pctx)) {
 431         if (pctx->op.kex.exchange != NULL) {
 432             rctx->op.kex.exchange = pctx->op.kex.exchange;
 433             if (!EVP_KEYEXCH_up_ref(rctx->op.kex.exchange)) {
 434                 OPENSSL_free(rctx);
 435                 return NULL;
 436             }
 437         }
 438         if (pctx->op.kex.exchprovctx != NULL) {
 439             if (!ossl_assert(pctx->op.kex.exchange != NULL))
 440                 return NULL;
 441             rctx->op.kex.exchprovctx
 442                 = pctx->op.kex.exchange->dupctx(pctx->op.kex.exchprovctx);
 443             if (rctx->op.kex.exchprovctx == NULL) {
 444                 EVP_KEYEXCH_free(rctx->op.kex.exchange);
 445                 OPENSSL_free(rctx);
 446                 return NULL;
 447             }
 448             return rctx;
 449         }
 450     } else if (EVP_PKEY_CTX_IS_SIGNATURE_OP(pctx)) {
 451         if (pctx->op.sig.signature != NULL) {
 452             rctx->op.sig.signature = pctx->op.sig.signature;
 453             if (!EVP_SIGNATURE_up_ref(rctx->op.sig.signature)) {
 454                 OPENSSL_free(rctx);
 455                 return NULL;
 456             }
 457         }
 458         if (pctx->op.sig.sigprovctx != NULL) {
 459             if (!ossl_assert(pctx->op.sig.signature != NULL))
 460                 return NULL;
 461             rctx->op.sig.sigprovctx
 462                 = pctx->op.sig.signature->dupctx(pctx->op.sig.sigprovctx);
 463             if (rctx->op.sig.sigprovctx == NULL) {
 464                 EVP_SIGNATURE_free(rctx->op.sig.signature);
 465                 OPENSSL_free(rctx);
 466                 return NULL;
 467             }
 468             return rctx;
 469         }
 470     } else if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(pctx)) {
 471         if (pctx->op.ciph.cipher != NULL) {
 472             rctx->op.ciph.cipher = pctx->op.ciph.cipher;
 473             if (!EVP_ASYM_CIPHER_up_ref(rctx->op.ciph.cipher)) {
 474                 OPENSSL_free(rctx);
 475                 return NULL;
 476             }
 477         }
 478         if (pctx->op.ciph.ciphprovctx != NULL) {
 479             if (!ossl_assert(pctx->op.ciph.cipher != NULL))
 480                 return NULL;
 481             rctx->op.ciph.ciphprovctx
 482                 = pctx->op.ciph.cipher->dupctx(pctx->op.ciph.ciphprovctx);
 483             if (rctx->op.ciph.ciphprovctx == NULL) {
 484                 EVP_ASYM_CIPHER_free(rctx->op.ciph.cipher);
 485                 OPENSSL_free(rctx);
 486                 return NULL;
 487             }
 488             return rctx;
 489         }
 490     }
 491
 492     rctx->pmeth = pctx->pmeth;
 493 # ifndef OPENSSL_NO_ENGINE
 494     rctx->engine = pctx->engine;
 495 # endif
 496
 497     if (pctx->peerkey)
 498         EVP_PKEY_up_ref(pctx->peerkey);
 499     rctx->peerkey = pctx->peerkey;
 500
 501     if (pctx->pmeth->copy(rctx, pctx) > 0)
 502         return rctx;
 503
 504     rctx->pmeth = NULL;
 505     EVP_PKEY_CTX_free(rctx);
 506     return NULL;
 507
 508 }
 509
 510 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 511 {
 512     if (app_pkey_methods == NULL) {
 513         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 514         if (app_pkey_methods == NULL){
 515             EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 516             return 0;
 517         }
 518     }
 519     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 520         EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 521         return 0;
 522     }
 523     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 524     return 1;
 525 }
 526
 527 void evp_app_cleanup_int(void)
 528 {
 529     if (app_pkey_methods != NULL)
 530         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 531 }
 532
 533 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 534 {
 535     const EVP_PKEY_METHOD *ret;
 536
 537     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 538
 539     return ret == NULL ? 0 : 1;
 540 }
 541
 542 size_t EVP_PKEY_meth_get_count(void)
 543 {
 544     size_t rv = OSSL_NELEM(standard_methods);
 545
 546     if (app_pkey_methods)
 547         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 548     return rv;
 549 }
 550
 551 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 552 {
 553     if (idx < OSSL_NELEM(standard_methods))
 554         return (standard_methods[idx])();
 555     if (app_pkey_methods == NULL)
 556         return NULL;
 557     idx -= OSSL_NELEM(standard_methods);
 558     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 559         return NULL;
 560     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 561 }
 562 #endif
 563
 564 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 565 {
 566     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 567             && ctx->op.kex.exchprovctx != NULL
 568             && ctx->op.kex.exchange != NULL
 569             && ctx->op.kex.exchange->set_ctx_params != NULL)
 570         return ctx->op.kex.exchange->set_ctx_params(ctx->op.kex.exchprovctx,
 571                                                     params);
 572     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 573             && ctx->op.sig.sigprovctx != NULL
 574             && ctx->op.sig.signature != NULL
 575             && ctx->op.sig.signature->set_ctx_params != NULL)
 576         return ctx->op.sig.signature->set_ctx_params(ctx->op.sig.sigprovctx,
 577                                                      params);
 578     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 579             && ctx->op.ciph.ciphprovctx != NULL
 580             && ctx->op.ciph.cipher != NULL
 581             && ctx->op.ciph.cipher->set_ctx_params != NULL)
 582         return ctx->op.ciph.cipher->set_ctx_params(ctx->op.ciph.ciphprovctx,
 583                                                      params);
 584     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 585         && ctx->op.keymgmt.genctx != NULL
 586         && ctx->keymgmt != NULL
 587         && ctx->keymgmt->gen_set_params != NULL)
 588         return evp_keymgmt_gen_set_params(ctx->keymgmt, ctx->op.keymgmt.genctx,
 589                                           params);
 590     return 0;
 591 }
 592
 593 #ifndef FIPS_MODE
 594 int EVP_PKEY_CTX_get_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 595 {
 596     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 597             && ctx->op.kex.exchprovctx != NULL
 598             && ctx->op.kex.exchange != NULL
 599             && ctx->op.kex.exchange->get_ctx_params != NULL)
 600         return ctx->op.kex.exchange->get_ctx_params(ctx->op.kex.exchprovctx,
 601                                                     params);
 602     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 603             && ctx->op.sig.sigprovctx != NULL
 604             && ctx->op.sig.signature != NULL
 605             && ctx->op.sig.signature->get_ctx_params != NULL)
 606         return ctx->op.sig.signature->get_ctx_params(ctx->op.sig.sigprovctx,
 607                                                      params);
 608     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 609             && ctx->op.ciph.ciphprovctx != NULL
 610             && ctx->op.ciph.cipher != NULL
 611             && ctx->op.ciph.cipher->get_ctx_params != NULL)
 612         return ctx->op.ciph.cipher->get_ctx_params(ctx->op.ciph.ciphprovctx,
 613                                                    params);
 614     return 0;
 615 }
 616
 617 const OSSL_PARAM *EVP_PKEY_CTX_gettable_params(EVP_PKEY_CTX *ctx)
 618 {
 619     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 620             && ctx->op.kex.exchange != NULL
 621             && ctx->op.kex.exchange->gettable_ctx_params != NULL)
 622         return ctx->op.kex.exchange->gettable_ctx_params();
 623     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 624             && ctx->op.sig.signature != NULL
 625             && ctx->op.sig.signature->gettable_ctx_params != NULL)
 626         return ctx->op.sig.signature->gettable_ctx_params();
 627
 628     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 629             && ctx->op.ciph.cipher != NULL
 630             && ctx->op.ciph.cipher->gettable_ctx_params != NULL)
 631         return ctx->op.ciph.cipher->gettable_ctx_params();
 632
 633     return NULL;
 634 }
 635
 636 const OSSL_PARAM *EVP_PKEY_CTX_settable_params(EVP_PKEY_CTX *ctx)
 637 {
 638     if (EVP_PKEY_CTX_IS_DERIVE_OP(ctx)
 639             && ctx->op.kex.exchange != NULL
 640             && ctx->op.kex.exchange->settable_ctx_params != NULL)
 641         return ctx->op.kex.exchange->settable_ctx_params();
 642     if (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 643             && ctx->op.sig.signature != NULL
 644             && ctx->op.sig.signature->settable_ctx_params != NULL)
 645         return ctx->op.sig.signature->settable_ctx_params();
 646     if (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 647             && ctx->op.ciph.cipher != NULL
 648             && ctx->op.ciph.cipher->settable_ctx_params != NULL)
 649         return ctx->op.ciph.cipher->settable_ctx_params();
 650     if (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 651             && ctx->keymgmt != NULL
 652             && ctx->keymgmt->gen_settable_params != NULL)
 653         return evp_keymgmt_gen_settable_params(ctx->keymgmt);
 654
 655     return NULL;
 656 }
 657
 658 /*
 659  * Internal helpers for stricter EVP_PKEY_CTX_{set,get}_params().
 660  *
 661  * Return 1 on success, 0 or negative for errors.
 662  *
 663  * In particular they return -2 if any of the params is not supported.
 664  *
 665  * They are not available in FIPS_MODE as they depend on
 666  *      - EVP_PKEY_CTX_{get,set}_params()
 667  *      - EVP_PKEY_CTX_{gettable,settable}_params()
 668  *
 669  */
 670 int evp_pkey_ctx_set_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 671 {
 672     const OSSL_PARAM *p;
 673
 674     if (ctx == NULL || params == NULL)
 675         return 0;
 676
 677     for (p = params; p->key != NULL; p++) {
 678         /* Check the ctx actually understands this parameter */
 679         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_settable_params(ctx),
 680                                     p->key) == NULL )
 681             return -2;
 682     }
 683
 684     return EVP_PKEY_CTX_set_params(ctx, params);
 685 }
 686
 687 int evp_pkey_ctx_get_params_strict(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 688 {
 689     const OSSL_PARAM *p;
 690
 691     if (ctx == NULL || params == NULL)
 692         return 0;
 693
 694     for (p = params; p->key != NULL; p++ ) {
 695         /* Check the ctx actually understands this parameter */
 696         if (OSSL_PARAM_locate_const(EVP_PKEY_CTX_gettable_params(ctx),
 697                                     p->key) == NULL )
 698             return -2;
 699     }
 700
 701     return EVP_PKEY_CTX_get_params(ctx, params);
 702 }
 703
 704 # ifndef OPENSSL_NO_DH
 705 int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad)
 706 {
 707     OSSL_PARAM dh_pad_params[2];
 708     unsigned int upad = pad;
 709
 710     /* We use EVP_PKEY_CTX_ctrl return values */
 711     if (ctx == NULL || !EVP_PKEY_CTX_IS_DERIVE_OP(ctx)) {
 712         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 713         return -2;
 714     }
 715
 716     /* TODO(3.0): Remove this eventually when no more legacy */
 717     if (ctx->op.kex.exchprovctx == NULL)
 718         return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_DERIVE,
 719                                  EVP_PKEY_CTRL_DH_PAD, pad, NULL);
 720
 721     dh_pad_params[0] = OSSL_PARAM_construct_uint(OSSL_EXCHANGE_PARAM_PAD, &upad);
 722     dh_pad_params[1] = OSSL_PARAM_construct_end();
 723
 724     return EVP_PKEY_CTX_set_params(ctx, dh_pad_params);
 725 }
 726 # endif
 727
 728 int EVP_PKEY_CTX_get_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD **md)
 729 {
 730     OSSL_PARAM sig_md_params[3], *p = sig_md_params;
 731     /* 80 should be big enough */
 732     char name[80] = "";
 733     const EVP_MD *tmp;
 734
 735     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 736         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 737         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 738         return -2;
 739     }
 740
 741     /* TODO(3.0): Remove this eventually when no more legacy */
 742     if (ctx->op.sig.sigprovctx == NULL)
 743         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 744                                  EVP_PKEY_CTRL_GET_MD, 0, (void *)(md));
 745
 746     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 747                                             name,
 748                                             sizeof(name));
 749     *p++ = OSSL_PARAM_construct_end();
 750
 751     if (!EVP_PKEY_CTX_get_params(ctx, sig_md_params))
 752         return 0;
 753
 754     tmp = evp_get_digestbyname_ex(ctx->libctx, name);
 755     if (tmp == NULL)
 756         return 0;
 757
 758     *md = tmp;
 759
 760     return 1;
 761 }
 762
 763 int EVP_PKEY_CTX_set_signature_md(EVP_PKEY_CTX *ctx, const EVP_MD *md)
 764 {
 765     OSSL_PARAM sig_md_params[2], *p = sig_md_params;
 766     const char *name;
 767
 768     if (ctx == NULL || !EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)) {
 769         ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
 770         /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 771         return -2;
 772     }
 773
 774     /* TODO(3.0): Remove this eventually when no more legacy */
 775     if (ctx->op.sig.sigprovctx == NULL)
 776         return EVP_PKEY_CTX_ctrl(ctx, -1, EVP_PKEY_OP_TYPE_SIG,
 777                                  EVP_PKEY_CTRL_MD, 0, (void *)(md));
 778
 779     if (md == NULL) {
 780         name = "";
 781     } else {
 782         name = EVP_MD_name(md);
 783     }
 784
 785     *p++ = OSSL_PARAM_construct_utf8_string(OSSL_SIGNATURE_PARAM_DIGEST,
 786                                             /*
 787                                              * Cast away the const. This is read
 788                                              * only so should be safe
 789                                              */
 790                                             (char *)name, 0);
 791     *p++ = OSSL_PARAM_construct_end();
 792
 793     return EVP_PKEY_CTX_set_params(ctx, sig_md_params);
 794 }
 795
 796 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
 797                                 int cmd, int p1, void *p2)
 798 {
 799     /*
 800      * GOST CMS format is different for different cipher algorithms.
 801      * Most of other algorithms don't have such a difference
 802      * so this ctrl is just ignored.
 803      */
 804     if (cmd == EVP_PKEY_CTRL_CIPHER)
 805         return -2;
 806 # ifndef OPENSSL_NO_DH
 807     if (keytype == EVP_PKEY_DH) {
 808         switch (cmd) {
 809             case EVP_PKEY_CTRL_DH_PAD:
 810                 return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
 811         }
 812     }
 813 # endif
 814 # ifndef OPENSSL_NO_EC
 815     if (keytype == EVP_PKEY_EC) {
 816         switch (cmd) {
 817         case EVP_PKEY_CTRL_EC_ECDH_COFACTOR:
 818             if (p1 == -2) {
 819                 return EVP_PKEY_CTX_get_ecdh_cofactor_mode(ctx);
 820             } else if (p1 < -1 || p1 > 1) {
 821                 /* Uses the same return values as EVP_PKEY_CTX_ctrl */
 822                 return -2;
 823             } else {
 824                 return EVP_PKEY_CTX_set_ecdh_cofactor_mode(ctx, p1);
 825             }
 826         case EVP_PKEY_CTRL_EC_KDF_TYPE:
 827             if (p1 == -2) {
 828                 return EVP_PKEY_CTX_get_ecdh_kdf_type(ctx);
 829             } else {
 830                 return EVP_PKEY_CTX_set_ecdh_kdf_type(ctx, p1);
 831             }
 832         case EVP_PKEY_CTRL_GET_EC_KDF_MD:
 833             return EVP_PKEY_CTX_get_ecdh_kdf_md(ctx, p2);
 834         case EVP_PKEY_CTRL_EC_KDF_MD:
 835             return EVP_PKEY_CTX_set_ecdh_kdf_md(ctx, p2);
 836         case EVP_PKEY_CTRL_GET_EC_KDF_OUTLEN:
 837             return EVP_PKEY_CTX_get_ecdh_kdf_outlen(ctx, p2);
 838         case EVP_PKEY_CTRL_EC_KDF_OUTLEN:
 839             return EVP_PKEY_CTX_set_ecdh_kdf_outlen(ctx, p1);
 840         case EVP_PKEY_CTRL_GET_EC_KDF_UKM:
 841             return EVP_PKEY_CTX_get0_ecdh_kdf_ukm(ctx, p2);
 842         case EVP_PKEY_CTRL_EC_KDF_UKM:
 843             return EVP_PKEY_CTX_set0_ecdh_kdf_ukm(ctx, p2, p1);
 844         }
 845     }
 846 # endif
 847     if (keytype == EVP_PKEY_RSA) {
 848         switch (cmd) {
 849         case EVP_PKEY_CTRL_RSA_OAEP_MD:
 850             return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
 851         case EVP_PKEY_CTRL_GET_RSA_OAEP_MD:
 852             return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
 853         case EVP_PKEY_CTRL_RSA_MGF1_MD:
 854             return EVP_PKEY_CTX_set_rsa_oaep_md(ctx, p2);
 855         case EVP_PKEY_CTRL_RSA_OAEP_LABEL:
 856             return EVP_PKEY_CTX_set0_rsa_oaep_label(ctx, p2, p1);
 857         case EVP_PKEY_CTRL_GET_RSA_OAEP_LABEL:
 858             return EVP_PKEY_CTX_get0_rsa_oaep_label(ctx, (unsigned char **)p2);
 859         case EVP_PKEY_CTRL_RSA_KEYGEN_BITS:
 860             return EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, p1);
 861         case EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP:
 862             return EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, p2);
 863         case EVP_PKEY_CTRL_RSA_KEYGEN_PRIMES:
 864             return EVP_PKEY_CTX_set_rsa_keygen_primes(ctx, p1);
 865         }
 866     }
 867     /*
 868      * keytype == -1 is used when several key types share the same structure,
 869      * or for generic controls that are the same across multiple key types.
 870      */
 871     if (keytype == -1) {
 872         switch (cmd) {
 873         case EVP_PKEY_CTRL_MD:
 874             return EVP_PKEY_CTX_set_signature_md(ctx, p2);
 875         case EVP_PKEY_CTRL_GET_MD:
 876             return EVP_PKEY_CTX_get_signature_md(ctx, p2);
 877         case EVP_PKEY_CTRL_RSA_PADDING:
 878             return EVP_PKEY_CTX_set_rsa_padding(ctx, p1);
 879         case EVP_PKEY_CTRL_GET_RSA_PADDING:
 880             return EVP_PKEY_CTX_get_rsa_padding(ctx, p2);
 881         case EVP_PKEY_CTRL_GET_RSA_MGF1_MD:
 882             return EVP_PKEY_CTX_get_rsa_oaep_md(ctx, p2);
 883         case EVP_PKEY_CTRL_RSA_PSS_SALTLEN:
 884             return EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, p1);
 885         case EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN:
 886             return EVP_PKEY_CTX_get_rsa_pss_saltlen(ctx, p2);
 887         case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
 888         case EVP_PKEY_CTRL_PKCS7_DECRYPT:
 889 # ifndef OPENSSL_NO_CMS
 890         case EVP_PKEY_CTRL_CMS_DECRYPT:
 891         case EVP_PKEY_CTRL_CMS_ENCRYPT:
 892 # endif
 893             if (ctx->pmeth->pkey_id != EVP_PKEY_RSA_PSS)
 894                 return 1;
 895             ERR_raise(ERR_LIB_EVP,
 896                       EVP_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 897             return -2;
 898         }
 899     }
 900     return 0;
 901 }
 902
 903 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
 904                       int cmd, int p1, void *p2)
 905 {
 906     int ret;
 907
 908     if (ctx == NULL) {
 909         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 910         return -2;
 911     }
 912
 913     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
 914             || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
 915                 && ctx->op.sig.sigprovctx != NULL)
 916             || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
 917                 && ctx->op.ciph.ciphprovctx != NULL)
 918             || (EVP_PKEY_CTX_IS_GEN_OP(ctx)
 919                 && ctx->op.keymgmt.genctx != NULL))
 920         return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
 921
 922     if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
 923         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 924         return -2;
 925     }
 926     if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
 927         return -1;
 928
 929     /* Skip the operation checks since this is called in a very early stage */
 930     if (ctx->pmeth->digest_custom != NULL)
 931         goto doit;
 932
 933     if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
 934         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
 935         return -1;
 936     }
 937
 938     if ((optype != -1) && !(ctx->operation & optype)) {
 939         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
 940         return -1;
 941     }
 942
 943  doit:
 944     ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
 945
 946     if (ret == -2)
 947         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 948
 949     return ret;
 950 }
 951
 952 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
 953                              int cmd, uint64_t value)
 954 {
 955     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
 956 }
 957
 958 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
 959                                     const char *value)
 960 {
 961     if (strcmp(name, "rsa_padding_mode") == 0)
 962         name = OSSL_ASYM_CIPHER_PARAM_PAD_MODE;
 963     else if (strcmp(name, "rsa_mgf1_md") == 0)
 964         name = OSSL_ASYM_CIPHER_PARAM_MGF1_DIGEST;
 965     else if (strcmp(name, "rsa_oaep_md") == 0)
 966         name = OSSL_ASYM_CIPHER_PARAM_OAEP_DIGEST;
 967     else if (strcmp(name, "rsa_oaep_label") == 0)
 968         name = OSSL_ASYM_CIPHER_PARAM_OAEP_LABEL;
 969     else if (strcmp(name, "rsa_pss_saltlen") == 0)
 970         name = OSSL_SIGNATURE_PARAM_PSS_SALTLEN;
 971     else if (strcmp(name, "rsa_keygen_bits") == 0)
 972         name = OSSL_PKEY_PARAM_RSA_BITS;
 973     else if (strcmp(name, "rsa_keygen_pubexp") == 0)
 974         name = OSSL_PKEY_PARAM_RSA_E;
 975     else if (strcmp(name, "rsa_keygen_primes") == 0)
 976         name = OSSL_PKEY_PARAM_RSA_PRIMES;
 977 # ifndef OPENSSL_NO_DH
 978     else if (strcmp(name, "dh_pad") == 0)
 979         name = OSSL_EXCHANGE_PARAM_PAD;
 980 # endif
 981 # ifndef OPENSSL_NO_EC
 982     else if (strcmp(name, "ecdh_cofactor_mode") == 0)
 983         name = OSSL_EXCHANGE_PARAM_EC_ECDH_COFACTOR_MODE;
 984     else if (strcmp(name, "ecdh_kdf_md") == 0)
 985         name = OSSL_EXCHANGE_PARAM_KDF_DIGEST;
 986 # endif
 987
 988     {
 989         /*
 990          * TODO(3.0) reduce the code above to only translate known legacy
 991          * string to the corresponding core name (see core_names.h), but
 992          * otherwise leave it to this code block to do the actual work.
 993          */
 994         const OSSL_PARAM *settable = EVP_PKEY_CTX_settable_params(ctx);
 995         OSSL_PARAM params[2] = { OSSL_PARAM_END, OSSL_PARAM_END };
 996         int rv = 0;
 997         int exists = 0;
 998
 999         if (!OSSL_PARAM_allocate_from_text(&params[0], settable, name, value,
1000                                            strlen(value), &exists)) {
1001             if (!exists) {
1002                 ERR_raise(ERR_LIB_EVP, EVP_R_COMMAND_NOT_SUPPORTED);
1003                 return -2;
1004             }
1005             return 0;
1006         }
1007         if (EVP_PKEY_CTX_set_params(ctx, params))
1008             rv = 1;
1009         OPENSSL_free(params[0].data);
1010         return rv;
1011     }
1012 }
1013
1014 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
1015                           const char *name, const char *value)
1016 {
1017     if (ctx == NULL) {
1018         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
1019         return -2;
1020     }
1021
1022     if ((EVP_PKEY_CTX_IS_DERIVE_OP(ctx) && ctx->op.kex.exchprovctx != NULL)
1023             || (EVP_PKEY_CTX_IS_SIGNATURE_OP(ctx)
1024                 && ctx->op.sig.sigprovctx != NULL)
1025             || (EVP_PKEY_CTX_IS_ASYM_CIPHER_OP(ctx)
1026                 && ctx->op.ciph.ciphprovctx != NULL)
1027             || (EVP_PKEY_CTX_IS_GEN_OP(ctx)
1028                 && ctx->op.keymgmt.genctx != NULL))
1029         return legacy_ctrl_str_to_param(ctx, name, value);
1030
1031     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
1032         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
1033         return -2;
1034     }
1035     if (strcmp(name, "digest") == 0)
1036         return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
1037                                value);
1038     return ctx->pmeth->ctrl_str(ctx, name, value);
1039 }
1040
1041 /* Utility functions to send a string of hex string to a ctrl */
1042
1043 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
1044 {
1045     size_t len;
1046
1047     len = strlen(str);
1048     if (len > INT_MAX)
1049         return -1;
1050     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
1051 }
1052
1053 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
1054 {
1055     unsigned char *bin;
1056     long binlen;
1057     int rv = -1;
1058
1059     bin = OPENSSL_hexstr2buf(hex, &binlen);
1060     if (bin == NULL)
1061         return 0;
1062     if (binlen <= INT_MAX)
1063         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
1064     OPENSSL_free(bin);
1065     return rv;
1066 }
1067
1068 /* Pass a message digest to a ctrl */
1069 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
1070 {
1071     const EVP_MD *m;
1072
1073     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
1074         EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
1075         return 0;
1076     }
1077     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
1078 }
1079
1080 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
1081 {
1082     return ctx->operation;
1083 }
1084
1085 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
1086 {
1087     ctx->keygen_info = dat;
1088     ctx->keygen_info_count = datlen;
1089 }
1090
1091 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
1092 {
1093     ctx->data = data;
1094 }
1095
1096 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
1097 {
1098     return ctx->data;
1099 }
1100
1101 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
1102 {
1103     return ctx->pkey;
1104 }
1105
1106 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
1107 {
1108     return ctx->peerkey;
1109 }
1110
1111 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
1112 {
1113     ctx->app_data = data;
1114 }
1115
1116 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
1117 {
1118     return ctx->app_data;
1119 }
1120
1121 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
1122                             int (*init) (EVP_PKEY_CTX *ctx))
1123 {
1124     pmeth->init = init;
1125 }
1126
1127 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
1128                             int (*copy) (EVP_PKEY_CTX *dst,
1129                                          const EVP_PKEY_CTX *src))
1130 {
1131     pmeth->copy = copy;
1132 }
1133
1134 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
1135                                void (*cleanup) (EVP_PKEY_CTX *ctx))
1136 {
1137     pmeth->cleanup = cleanup;
1138 }
1139
1140 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
1141                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
1142                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
1143                                                  EVP_PKEY *pkey))
1144 {
1145     pmeth->paramgen_init = paramgen_init;
1146     pmeth->paramgen = paramgen;
1147 }
1148
1149 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
1150                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
1151                               int (*keygen) (EVP_PKEY_CTX *ctx,
1152                                              EVP_PKEY *pkey))
1153 {
1154     pmeth->keygen_init = keygen_init;
1155     pmeth->keygen = keygen;
1156 }
1157
1158 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
1159                             int (*sign_init) (EVP_PKEY_CTX *ctx),
1160                             int (*sign) (EVP_PKEY_CTX *ctx,
1161                                          unsigned char *sig, size_t *siglen,
1162                                          const unsigned char *tbs,
1163                                          size_t tbslen))
1164 {
1165     pmeth->sign_init = sign_init;
1166     pmeth->sign = sign;
1167 }
1168
1169 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
1170                               int (*verify_init) (EVP_PKEY_CTX *ctx),
1171                               int (*verify) (EVP_PKEY_CTX *ctx,
1172                                              const unsigned char *sig,
1173                                              size_t siglen,
1174                                              const unsigned char *tbs,
1175                                              size_t tbslen))
1176 {
1177     pmeth->verify_init = verify_init;
1178     pmeth->verify = verify;
1179 }
1180
1181 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
1182                                       int (*verify_recover_init) (EVP_PKEY_CTX
1183                                                                   *ctx),
1184                                       int (*verify_recover) (EVP_PKEY_CTX
1185                                                              *ctx,
1186                                                              unsigned char
1187                                                              *sig,
1188                                                              size_t *siglen,
1189                                                              const unsigned
1190                                                              char *tbs,
1191                                                              size_t tbslen))
1192 {
1193     pmeth->verify_recover_init = verify_recover_init;
1194     pmeth->verify_recover = verify_recover;
1195 }
1196
1197 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
1198                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
1199                                                     EVP_MD_CTX *mctx),
1200                                int (*signctx) (EVP_PKEY_CTX *ctx,
1201                                                unsigned char *sig,
1202                                                size_t *siglen,
1203                                                EVP_MD_CTX *mctx))
1204 {
1205     pmeth->signctx_init = signctx_init;
1206     pmeth->signctx = signctx;
1207 }
1208
1209 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
1210                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
1211                                                         EVP_MD_CTX *mctx),
1212                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
1213                                                    const unsigned char *sig,
1214                                                    int siglen,
1215                                                    EVP_MD_CTX *mctx))
1216 {
1217     pmeth->verifyctx_init = verifyctx_init;
1218     pmeth->verifyctx = verifyctx;
1219 }
1220
1221 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
1222                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
1223                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
1224                                                  unsigned char *out,
1225                                                  size_t *outlen,
1226                                                  const unsigned char *in,
1227                                                  size_t inlen))
1228 {
1229     pmeth->encrypt_init = encrypt_init;
1230     pmeth->encrypt = encryptfn;
1231 }
1232
1233 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
1234                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
1235                                int (*decrypt) (EVP_PKEY_CTX *ctx,
1236                                                unsigned char *out,
1237                                                size_t *outlen,
1238                                                const unsigned char *in,
1239                                                size_t inlen))
1240 {
1241     pmeth->decrypt_init = decrypt_init;
1242     pmeth->decrypt = decrypt;
1243 }
1244
1245 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
1246                               int (*derive_init) (EVP_PKEY_CTX *ctx),
1247                               int (*derive) (EVP_PKEY_CTX *ctx,
1248                                              unsigned char *key,
1249                                              size_t *keylen))
1250 {
1251     pmeth->derive_init = derive_init;
1252     pmeth->derive = derive;
1253 }
1254
1255 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
1256                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1257                                          void *p2),
1258                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
1259                                              const char *type,
1260                                              const char *value))
1261 {
1262     pmeth->ctrl = ctrl;
1263     pmeth->ctrl_str = ctrl_str;
1264 }
1265
1266 void EVP_PKEY_meth_set_digestsign(EVP_PKEY_METHOD *pmeth,
1267     int (*digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1268                        const unsigned char *tbs, size_t tbslen))
1269 {
1270     pmeth->digestsign = digestsign;
1271 }
1272
1273 void EVP_PKEY_meth_set_digestverify(EVP_PKEY_METHOD *pmeth,
1274     int (*digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1275                          size_t siglen, const unsigned char *tbs,
1276                          size_t tbslen))
1277 {
1278     pmeth->digestverify = digestverify;
1279 }
1280
1281 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
1282                              int (*check) (EVP_PKEY *pkey))
1283 {
1284     pmeth->check = check;
1285 }
1286
1287 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
1288                                     int (*check) (EVP_PKEY *pkey))
1289 {
1290     pmeth->public_check = check;
1291 }
1292
1293 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
1294                                    int (*check) (EVP_PKEY *pkey))
1295 {
1296     pmeth->param_check = check;
1297 }
1298
1299 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
1300                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
1301                                                            EVP_MD_CTX *mctx))
1302 {
1303     pmeth->digest_custom = digest_custom;
1304 }
1305
1306 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
1307                             int (**pinit) (EVP_PKEY_CTX *ctx))
1308 {
1309     *pinit = pmeth->init;
1310 }
1311
1312 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
1313                             int (**pcopy) (EVP_PKEY_CTX *dst,
1314                                            const EVP_PKEY_CTX *src))
1315 {
1316     *pcopy = pmeth->copy;
1317 }
1318
1319 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
1320                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
1321 {
1322     *pcleanup = pmeth->cleanup;
1323 }
1324
1325 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
1326                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
1327                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
1328                                                    EVP_PKEY *pkey))
1329 {
1330     if (pparamgen_init)
1331         *pparamgen_init = pmeth->paramgen_init;
1332     if (pparamgen)
1333         *pparamgen = pmeth->paramgen;
1334 }
1335
1336 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
1337                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
1338                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
1339                                                EVP_PKEY *pkey))
1340 {
1341     if (pkeygen_init)
1342         *pkeygen_init = pmeth->keygen_init;
1343     if (pkeygen)
1344         *pkeygen = pmeth->keygen;
1345 }
1346
1347 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
1348                             int (**psign_init) (EVP_PKEY_CTX *ctx),
1349                             int (**psign) (EVP_PKEY_CTX *ctx,
1350                                            unsigned char *sig, size_t *siglen,
1351                                            const unsigned char *tbs,
1352                                            size_t tbslen))
1353 {
1354     if (psign_init)
1355         *psign_init = pmeth->sign_init;
1356     if (psign)
1357         *psign = pmeth->sign;
1358 }
1359
1360 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
1361                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
1362                               int (**pverify) (EVP_PKEY_CTX *ctx,
1363                                                const unsigned char *sig,
1364                                                size_t siglen,
1365                                                const unsigned char *tbs,
1366                                                size_t tbslen))
1367 {
1368     if (pverify_init)
1369         *pverify_init = pmeth->verify_init;
1370     if (pverify)
1371         *pverify = pmeth->verify;
1372 }
1373
1374 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
1375                                       int (**pverify_recover_init) (EVP_PKEY_CTX
1376                                                                     *ctx),
1377                                       int (**pverify_recover) (EVP_PKEY_CTX
1378                                                                *ctx,
1379                                                                unsigned char
1380                                                                *sig,
1381                                                                size_t *siglen,
1382                                                                const unsigned
1383                                                                char *tbs,
1384                                                                size_t tbslen))
1385 {
1386     if (pverify_recover_init)
1387         *pverify_recover_init = pmeth->verify_recover_init;
1388     if (pverify_recover)
1389         *pverify_recover = pmeth->verify_recover;
1390 }
1391
1392 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
1393                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
1394                                                       EVP_MD_CTX *mctx),
1395                                int (**psignctx) (EVP_PKEY_CTX *ctx,
1396                                                  unsigned char *sig,
1397                                                  size_t *siglen,
1398                                                  EVP_MD_CTX *mctx))
1399 {
1400     if (psignctx_init)
1401         *psignctx_init = pmeth->signctx_init;
1402     if (psignctx)
1403         *psignctx = pmeth->signctx;
1404 }
1405
1406 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
1407                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
1408                                                           EVP_MD_CTX *mctx),
1409                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
1410                                                      const unsigned char *sig,
1411                                                      int siglen,
1412                                                      EVP_MD_CTX *mctx))
1413 {
1414     if (pverifyctx_init)
1415         *pverifyctx_init = pmeth->verifyctx_init;
1416     if (pverifyctx)
1417         *pverifyctx = pmeth->verifyctx;
1418 }
1419
1420 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
1421                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
1422                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
1423                                                    unsigned char *out,
1424                                                    size_t *outlen,
1425                                                    const unsigned char *in,
1426                                                    size_t inlen))
1427 {
1428     if (pencrypt_init)
1429         *pencrypt_init = pmeth->encrypt_init;
1430     if (pencryptfn)
1431         *pencryptfn = pmeth->encrypt;
1432 }
1433
1434 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
1435                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
1436                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
1437                                                  unsigned char *out,
1438                                                  size_t *outlen,
1439                                                  const unsigned char *in,
1440                                                  size_t inlen))
1441 {
1442     if (pdecrypt_init)
1443         *pdecrypt_init = pmeth->decrypt_init;
1444     if (pdecrypt)
1445         *pdecrypt = pmeth->decrypt;
1446 }
1447
1448 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
1449                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
1450                               int (**pderive) (EVP_PKEY_CTX *ctx,
1451                                                unsigned char *key,
1452                                                size_t *keylen))
1453 {
1454     if (pderive_init)
1455         *pderive_init = pmeth->derive_init;
1456     if (pderive)
1457         *pderive = pmeth->derive;
1458 }
1459
1460 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
1461                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
1462                                            void *p2),
1463                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
1464                                                const char *type,
1465                                                const char *value))
1466 {
1467     if (pctrl)
1468         *pctrl = pmeth->ctrl;
1469     if (pctrl_str)
1470         *pctrl_str = pmeth->ctrl_str;
1471 }
1472
1473 void EVP_PKEY_meth_get_digestsign(EVP_PKEY_METHOD *pmeth,
1474     int (**digestsign) (EVP_MD_CTX *ctx, unsigned char *sig, size_t *siglen,
1475                         const unsigned char *tbs, size_t tbslen))
1476 {
1477     if (digestsign)
1478         *digestsign = pmeth->digestsign;
1479 }
1480
1481 void EVP_PKEY_meth_get_digestverify(EVP_PKEY_METHOD *pmeth,
1482     int (**digestverify) (EVP_MD_CTX *ctx, const unsigned char *sig,
1483                           size_t siglen, const unsigned char *tbs,
1484                           size_t tbslen))
1485 {
1486     if (digestverify)
1487         *digestverify = pmeth->digestverify;
1488 }
1489
1490 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
1491                              int (**pcheck) (EVP_PKEY *pkey))
1492 {
1493     if (pcheck != NULL)
1494         *pcheck = pmeth->check;
1495 }
1496
1497 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
1498                                     int (**pcheck) (EVP_PKEY *pkey))
1499 {
1500     if (pcheck != NULL)
1501         *pcheck = pmeth->public_check;
1502 }
1503
1504 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
1505                                    int (**pcheck) (EVP_PKEY *pkey))
1506 {
1507     if (pcheck != NULL)
1508         *pcheck = pmeth->param_check;
1509 }
1510
1511 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
1512                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
1513                                                              EVP_MD_CTX *mctx))
1514 {
1515     if (pdigest_custom != NULL)
1516         *pdigest_custom = pmeth->digest_custom;
1517 }
1518
1519 #endif /* FIPS_MODE */