crypto/evp/pmeth_lib.c

   1 /*
   2  * Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL project
   3  * 2006.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58
  59 #include <stdio.h>
  60 #include <stdlib.h>
  61 #include "internal/cryptlib.h"
  62 #ifndef OPENSSL_NO_ENGINE
  63 # include <openssl/engine.h>
  64 #endif
  65 #include <openssl/evp.h>
  66 #include <openssl/x509v3.h>
  67 #include "internal/asn1_int.h"
  68 #include "internal/evp_int.h"
  69 #include "internal/numbers.h"
  70
  71 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
  72
  73 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
  74
  75 static const EVP_PKEY_METHOD *standard_methods[] = {
  76 #ifndef OPENSSL_NO_RSA
  77     &rsa_pkey_meth,
  78 #endif
  79 #ifndef OPENSSL_NO_DH
  80     &dh_pkey_meth,
  81 #endif
  82 #ifndef OPENSSL_NO_DSA
  83     &dsa_pkey_meth,
  84 #endif
  85 #ifndef OPENSSL_NO_EC
  86     &ec_pkey_meth,
  87 #endif
  88     &hmac_pkey_meth,
  89 #ifndef OPENSSL_NO_CMAC
  90     &cmac_pkey_meth,
  91 #endif
  92 #ifndef OPENSSL_NO_DH
  93     &dhx_pkey_meth,
  94 #endif
  95     &tls1_prf_pkey_meth,
  96     &hkdf_pkey_meth
  97 };
  98
  99 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
 100                            pmeth);
 101
 102 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
 103                      const EVP_PKEY_METHOD *const *b)
 104 {
 105     return ((*a)->pkey_id - (*b)->pkey_id);
 106 }
 107
 108 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
 109                              pmeth);
 110
 111 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
 112 {
 113     EVP_PKEY_METHOD tmp;
 114     const EVP_PKEY_METHOD *t = &tmp, **ret;
 115     tmp.pkey_id = type;
 116     if (app_pkey_methods) {
 117         int idx;
 118         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
 119         if (idx >= 0)
 120             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 121     }
 122     ret = OBJ_bsearch_pmeth(&t, standard_methods,
 123                             sizeof(standard_methods) /
 124                             sizeof(EVP_PKEY_METHOD *));
 125     if (!ret || !*ret)
 126         return NULL;
 127     return *ret;
 128 }
 129
 130 static EVP_PKEY_CTX *int_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id)
 131 {
 132     EVP_PKEY_CTX *ret;
 133     const EVP_PKEY_METHOD *pmeth;
 134     if (id == -1) {
 135         if (!pkey || !pkey->ameth)
 136             return NULL;
 137         id = pkey->ameth->pkey_id;
 138     }
 139 #ifndef OPENSSL_NO_ENGINE
 140     if (pkey && pkey->engine)
 141         e = pkey->engine;
 142     /* Try to find an ENGINE which implements this method */
 143     if (e) {
 144         if (!ENGINE_init(e)) {
 145             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
 146             return NULL;
 147         }
 148     } else
 149         e = ENGINE_get_pkey_meth_engine(id);
 150
 151     /*
 152      * If an ENGINE handled this method look it up. Otherwise use internal
 153      * tables.
 154      */
 155
 156     if (e)
 157         pmeth = ENGINE_get_pkey_meth(e, id);
 158     else
 159 #endif
 160         pmeth = EVP_PKEY_meth_find(id);
 161
 162     if (pmeth == NULL) {
 163         EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
 164         return NULL;
 165     }
 166
 167     ret = OPENSSL_zalloc(sizeof(*ret));
 168     if (ret == NULL) {
 169 #ifndef OPENSSL_NO_ENGINE
 170         ENGINE_finish(e);
 171 #endif
 172         EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
 173         return NULL;
 174     }
 175     ret->engine = e;
 176     ret->pmeth = pmeth;
 177     ret->operation = EVP_PKEY_OP_UNDEFINED;
 178     ret->pkey = pkey;
 179     if (pkey)
 180         EVP_PKEY_up_ref(pkey);
 181
 182     if (pmeth->init) {
 183         if (pmeth->init(ret) <= 0) {
 184             EVP_PKEY_CTX_free(ret);
 185             return NULL;
 186         }
 187     }
 188
 189     return ret;
 190 }
 191
 192 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 193 {
 194     EVP_PKEY_METHOD *pmeth;
 195
 196     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 197     if (pmeth == NULL)
 198         return NULL;
 199
 200     pmeth->pkey_id = id;
 201     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 202     return pmeth;
 203 }
 204
 205 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 206                              const EVP_PKEY_METHOD *meth)
 207 {
 208     if (ppkey_id)
 209         *ppkey_id = meth->pkey_id;
 210     if (pflags)
 211         *pflags = meth->flags;
 212 }
 213
 214 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 215 {
 216
 217     dst->init = src->init;
 218     dst->copy = src->copy;
 219     dst->cleanup = src->cleanup;
 220
 221     dst->paramgen_init = src->paramgen_init;
 222     dst->paramgen = src->paramgen;
 223
 224     dst->keygen_init = src->keygen_init;
 225     dst->keygen = src->keygen;
 226
 227     dst->sign_init = src->sign_init;
 228     dst->sign = src->sign;
 229
 230     dst->verify_init = src->verify_init;
 231     dst->verify = src->verify;
 232
 233     dst->verify_recover_init = src->verify_recover_init;
 234     dst->verify_recover = src->verify_recover;
 235
 236     dst->signctx_init = src->signctx_init;
 237     dst->signctx = src->signctx;
 238
 239     dst->verifyctx_init = src->verifyctx_init;
 240     dst->verifyctx = src->verifyctx;
 241
 242     dst->encrypt_init = src->encrypt_init;
 243     dst->encrypt = src->encrypt;
 244
 245     dst->decrypt_init = src->decrypt_init;
 246     dst->decrypt = src->decrypt;
 247
 248     dst->derive_init = src->derive_init;
 249     dst->derive = src->derive;
 250
 251     dst->ctrl = src->ctrl;
 252     dst->ctrl_str = src->ctrl_str;
 253 }
 254
 255 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 256 {
 257     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 258         OPENSSL_free(pmeth);
 259 }
 260
 261 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 262 {
 263     return int_ctx_new(pkey, e, -1);
 264 }
 265
 266 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 267 {
 268     return int_ctx_new(NULL, e, id);
 269 }
 270
 271 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *pctx)
 272 {
 273     EVP_PKEY_CTX *rctx;
 274     if (!pctx->pmeth || !pctx->pmeth->copy)
 275         return NULL;
 276 #ifndef OPENSSL_NO_ENGINE
 277     /* Make sure it's safe to copy a pkey context using an ENGINE */
 278     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 279         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
 280         return 0;
 281     }
 282 #endif
 283     rctx = OPENSSL_malloc(sizeof(*rctx));
 284     if (rctx == NULL)
 285         return NULL;
 286
 287     rctx->pmeth = pctx->pmeth;
 288 #ifndef OPENSSL_NO_ENGINE
 289     rctx->engine = pctx->engine;
 290 #endif
 291
 292     if (pctx->pkey)
 293         EVP_PKEY_up_ref(pctx->pkey);
 294
 295     rctx->pkey = pctx->pkey;
 296
 297     if (pctx->peerkey)
 298         EVP_PKEY_up_ref(pctx->peerkey);
 299
 300     rctx->peerkey = pctx->peerkey;
 301
 302     rctx->data = NULL;
 303     rctx->app_data = NULL;
 304     rctx->operation = pctx->operation;
 305
 306     if (pctx->pmeth->copy(rctx, pctx) > 0)
 307         return rctx;
 308
 309     EVP_PKEY_CTX_free(rctx);
 310     return NULL;
 311
 312 }
 313
 314 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 315 {
 316     if (app_pkey_methods == NULL) {
 317         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 318         if (app_pkey_methods == NULL)
 319             return 0;
 320     }
 321     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth))
 322         return 0;
 323     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 324     return 1;
 325 }
 326
 327 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 328 {
 329     if (ctx == NULL)
 330         return;
 331     if (ctx->pmeth && ctx->pmeth->cleanup)
 332         ctx->pmeth->cleanup(ctx);
 333     EVP_PKEY_free(ctx->pkey);
 334     EVP_PKEY_free(ctx->peerkey);
 335 #ifndef OPENSSL_NO_ENGINE
 336     ENGINE_finish(ctx->engine);
 337 #endif
 338     OPENSSL_free(ctx);
 339 }
 340
 341 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
 342                       int cmd, int p1, void *p2)
 343 {
 344     int ret;
 345     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl) {
 346         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 347         return -2;
 348     }
 349     if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
 350         return -1;
 351
 352     if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
 353         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
 354         return -1;
 355     }
 356
 357     if ((optype != -1) && !(ctx->operation & optype)) {
 358         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
 359         return -1;
 360     }
 361
 362     ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
 363
 364     if (ret == -2)
 365         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 366
 367     return ret;
 368
 369 }
 370
 371 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
 372                           const char *name, const char *value)
 373 {
 374     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
 375         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 376         return -2;
 377     }
 378     if (strcmp(name, "digest") == 0) {
 379         const EVP_MD *md;
 380         if (value == NULL || (md = EVP_get_digestbyname(value)) == NULL) {
 381             EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_INVALID_DIGEST);
 382             return 0;
 383         }
 384         return EVP_PKEY_CTX_set_signature_md(ctx, md);
 385     }
 386     return ctx->pmeth->ctrl_str(ctx, name, value);
 387 }
 388
 389 /* Utility functions to send a string of hex string to a ctrl */
 390
 391 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
 392 {
 393     size_t len;
 394
 395     len = strlen(str);
 396     if (len > INT_MAX)
 397         return -1;
 398     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
 399 }
 400
 401 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
 402 {
 403     unsigned char *bin;
 404     long binlen;
 405     int rv = -1;
 406
 407     bin = string_to_hex(hex, &binlen);
 408     if (bin == NULL)
 409         return 0;
 410     if (binlen <= INT_MAX)
 411         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
 412     OPENSSL_free(bin);
 413     return rv;
 414 }
 415
 416 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
 417 {
 418     return ctx->operation;
 419 }
 420
 421 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
 422 {
 423     ctx->keygen_info = dat;
 424     ctx->keygen_info_count = datlen;
 425 }
 426
 427 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
 428 {
 429     ctx->data = data;
 430 }
 431
 432 void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX *ctx)
 433 {
 434     return ctx->data;
 435 }
 436
 437 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
 438 {
 439     return ctx->pkey;
 440 }
 441
 442 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
 443 {
 444     return ctx->peerkey;
 445 }
 446
 447 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
 448 {
 449     ctx->app_data = data;
 450 }
 451
 452 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
 453 {
 454     return ctx->app_data;
 455 }
 456
 457 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
 458                             int (*init) (EVP_PKEY_CTX *ctx))
 459 {
 460     pmeth->init = init;
 461 }
 462
 463 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
 464                             int (*copy) (EVP_PKEY_CTX *dst,
 465                                          EVP_PKEY_CTX *src))
 466 {
 467     pmeth->copy = copy;
 468 }
 469
 470 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
 471                                void (*cleanup) (EVP_PKEY_CTX *ctx))
 472 {
 473     pmeth->cleanup = cleanup;
 474 }
 475
 476 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
 477                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
 478                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
 479                                                  EVP_PKEY *pkey))
 480 {
 481     pmeth->paramgen_init = paramgen_init;
 482     pmeth->paramgen = paramgen;
 483 }
 484
 485 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
 486                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
 487                               int (*keygen) (EVP_PKEY_CTX *ctx,
 488                                              EVP_PKEY *pkey))
 489 {
 490     pmeth->keygen_init = keygen_init;
 491     pmeth->keygen = keygen;
 492 }
 493
 494 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
 495                             int (*sign_init) (EVP_PKEY_CTX *ctx),
 496                             int (*sign) (EVP_PKEY_CTX *ctx,
 497                                          unsigned char *sig, size_t *siglen,
 498                                          const unsigned char *tbs,
 499                                          size_t tbslen))
 500 {
 501     pmeth->sign_init = sign_init;
 502     pmeth->sign = sign;
 503 }
 504
 505 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
 506                               int (*verify_init) (EVP_PKEY_CTX *ctx),
 507                               int (*verify) (EVP_PKEY_CTX *ctx,
 508                                              const unsigned char *sig,
 509                                              size_t siglen,
 510                                              const unsigned char *tbs,
 511                                              size_t tbslen))
 512 {
 513     pmeth->verify_init = verify_init;
 514     pmeth->verify = verify;
 515 }
 516
 517 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
 518                                       int (*verify_recover_init) (EVP_PKEY_CTX
 519                                                                   *ctx),
 520                                       int (*verify_recover) (EVP_PKEY_CTX
 521                                                              *ctx,
 522                                                              unsigned char
 523                                                              *sig,
 524                                                              size_t *siglen,
 525                                                              const unsigned
 526                                                              char *tbs,
 527                                                              size_t tbslen))
 528 {
 529     pmeth->verify_recover_init = verify_recover_init;
 530     pmeth->verify_recover = verify_recover;
 531 }
 532
 533 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
 534                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
 535                                                     EVP_MD_CTX *mctx),
 536                                int (*signctx) (EVP_PKEY_CTX *ctx,
 537                                                unsigned char *sig,
 538                                                size_t *siglen,
 539                                                EVP_MD_CTX *mctx))
 540 {
 541     pmeth->signctx_init = signctx_init;
 542     pmeth->signctx = signctx;
 543 }
 544
 545 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
 546                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
 547                                                         EVP_MD_CTX *mctx),
 548                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
 549                                                    const unsigned char *sig,
 550                                                    int siglen,
 551                                                    EVP_MD_CTX *mctx))
 552 {
 553     pmeth->verifyctx_init = verifyctx_init;
 554     pmeth->verifyctx = verifyctx;
 555 }
 556
 557 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
 558                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
 559                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
 560                                                  unsigned char *out,
 561                                                  size_t *outlen,
 562                                                  const unsigned char *in,
 563                                                  size_t inlen))
 564 {
 565     pmeth->encrypt_init = encrypt_init;
 566     pmeth->encrypt = encryptfn;
 567 }
 568
 569 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
 570                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
 571                                int (*decrypt) (EVP_PKEY_CTX *ctx,
 572                                                unsigned char *out,
 573                                                size_t *outlen,
 574                                                const unsigned char *in,
 575                                                size_t inlen))
 576 {
 577     pmeth->decrypt_init = decrypt_init;
 578     pmeth->decrypt = decrypt;
 579 }
 580
 581 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
 582                               int (*derive_init) (EVP_PKEY_CTX *ctx),
 583                               int (*derive) (EVP_PKEY_CTX *ctx,
 584                                              unsigned char *key,
 585                                              size_t *keylen))
 586 {
 587     pmeth->derive_init = derive_init;
 588     pmeth->derive = derive;
 589 }
 590
 591 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
 592                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
 593                                          void *p2),
 594                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
 595                                              const char *type,
 596                                              const char *value))
 597 {
 598     pmeth->ctrl = ctrl;
 599     pmeth->ctrl_str = ctrl_str;
 600 }
 601
 602 void EVP_PKEY_meth_get_init(EVP_PKEY_METHOD *pmeth,
 603                             int (**pinit) (EVP_PKEY_CTX *ctx))
 604 {
 605     *pinit = pmeth->init;
 606 }
 607
 608 void EVP_PKEY_meth_get_copy(EVP_PKEY_METHOD *pmeth,
 609                             int (**pcopy) (EVP_PKEY_CTX *dst,
 610                                            EVP_PKEY_CTX *src))
 611 {
 612     *pcopy = pmeth->copy;
 613 }
 614
 615 void EVP_PKEY_meth_get_cleanup(EVP_PKEY_METHOD *pmeth,
 616                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
 617 {
 618     *pcleanup = pmeth->cleanup;
 619 }
 620
 621 void EVP_PKEY_meth_get_paramgen(EVP_PKEY_METHOD *pmeth,
 622                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
 623                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
 624                                                    EVP_PKEY *pkey))
 625 {
 626     if (pparamgen_init)
 627         *pparamgen_init = pmeth->paramgen_init;
 628     if (pparamgen)
 629         *pparamgen = pmeth->paramgen;
 630 }
 631
 632 void EVP_PKEY_meth_get_keygen(EVP_PKEY_METHOD *pmeth,
 633                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
 634                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
 635                                                EVP_PKEY *pkey))
 636 {
 637     if (pkeygen_init)
 638         *pkeygen_init = pmeth->keygen_init;
 639     if (pkeygen)
 640         *pkeygen = pmeth->keygen;
 641 }
 642
 643 void EVP_PKEY_meth_get_sign(EVP_PKEY_METHOD *pmeth,
 644                             int (**psign_init) (EVP_PKEY_CTX *ctx),
 645                             int (**psign) (EVP_PKEY_CTX *ctx,
 646                                            unsigned char *sig, size_t *siglen,
 647                                            const unsigned char *tbs,
 648                                            size_t tbslen))
 649 {
 650     if (psign_init)
 651         *psign_init = pmeth->sign_init;
 652     if (psign)
 653         *psign = pmeth->sign;
 654 }
 655
 656 void EVP_PKEY_meth_get_verify(EVP_PKEY_METHOD *pmeth,
 657                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
 658                               int (**pverify) (EVP_PKEY_CTX *ctx,
 659                                                const unsigned char *sig,
 660                                                size_t siglen,
 661                                                const unsigned char *tbs,
 662                                                size_t tbslen))
 663 {
 664     if (pverify_init)
 665         *pverify_init = pmeth->verify_init;
 666     if (pverify)
 667         *pverify = pmeth->verify;
 668 }
 669
 670 void EVP_PKEY_meth_get_verify_recover(EVP_PKEY_METHOD *pmeth,
 671                                       int (**pverify_recover_init) (EVP_PKEY_CTX
 672                                                                     *ctx),
 673                                       int (**pverify_recover) (EVP_PKEY_CTX
 674                                                                *ctx,
 675                                                                unsigned char
 676                                                                *sig,
 677                                                                size_t *siglen,
 678                                                                const unsigned
 679                                                                char *tbs,
 680                                                                size_t tbslen))
 681 {
 682     if (pverify_recover_init)
 683         *pverify_recover_init = pmeth->verify_recover_init;
 684     if (pverify_recover)
 685         *pverify_recover = pmeth->verify_recover;
 686 }
 687
 688 void EVP_PKEY_meth_get_signctx(EVP_PKEY_METHOD *pmeth,
 689                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
 690                                                       EVP_MD_CTX *mctx),
 691                                int (**psignctx) (EVP_PKEY_CTX *ctx,
 692                                                  unsigned char *sig,
 693                                                  size_t *siglen,
 694                                                  EVP_MD_CTX *mctx))
 695 {
 696     if (psignctx_init)
 697         *psignctx_init = pmeth->signctx_init;
 698     if (psignctx)
 699         *psignctx = pmeth->signctx;
 700 }
 701
 702 void EVP_PKEY_meth_get_verifyctx(EVP_PKEY_METHOD *pmeth,
 703                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
 704                                                           EVP_MD_CTX *mctx),
 705                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
 706                                                      const unsigned char *sig,
 707                                                      int siglen,
 708                                                      EVP_MD_CTX *mctx))
 709 {
 710     if (pverifyctx_init)
 711         *pverifyctx_init = pmeth->verifyctx_init;
 712     if (pverifyctx)
 713         *pverifyctx = pmeth->verifyctx;
 714 }
 715
 716 void EVP_PKEY_meth_get_encrypt(EVP_PKEY_METHOD *pmeth,
 717                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
 718                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
 719                                                    unsigned char *out,
 720                                                    size_t *outlen,
 721                                                    const unsigned char *in,
 722                                                    size_t inlen))
 723 {
 724     if (pencrypt_init)
 725         *pencrypt_init = pmeth->encrypt_init;
 726     if (pencryptfn)
 727         *pencryptfn = pmeth->encrypt;
 728 }
 729
 730 void EVP_PKEY_meth_get_decrypt(EVP_PKEY_METHOD *pmeth,
 731                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
 732                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
 733                                                  unsigned char *out,
 734                                                  size_t *outlen,
 735                                                  const unsigned char *in,
 736                                                  size_t inlen))
 737 {
 738     if (pdecrypt_init)
 739         *pdecrypt_init = pmeth->decrypt_init;
 740     if (pdecrypt)
 741         *pdecrypt = pmeth->decrypt;
 742 }
 743
 744 void EVP_PKEY_meth_get_derive(EVP_PKEY_METHOD *pmeth,
 745                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
 746                               int (**pderive) (EVP_PKEY_CTX *ctx,
 747                                                unsigned char *key,
 748                                                size_t *keylen))
 749 {
 750     if (pderive_init)
 751         *pderive_init = pmeth->derive_init;
 752     if (pderive)
 753         *pderive = pmeth->derive;
 754 }
 755
 756 void EVP_PKEY_meth_get_ctrl(EVP_PKEY_METHOD *pmeth,
 757                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
 758                                            void *p2),
 759                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
 760                                                const char *type,
 761                                                const char *value))
 762 {
 763     if (pctrl)
 764         *pctrl = pmeth->ctrl;
 765     if (pctrl_str)
 766         *pctrl_str = pmeth->ctrl_str;
 767 }