crypto/evp/pmeth_lib.c

   1 /*
   2  * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the OpenSSL license (the "License").  You may not use
   5  * this file except in compliance with the License.  You can obtain a copy
   6  * in the file LICENSE in the source distribution or at
   7  * https://www.openssl.org/source/license.html
   8  */
   9
  10 #include <stdio.h>
  11 #include <stdlib.h>
  12 #include "internal/cryptlib.h"
  13 #include <openssl/engine.h>
  14 #include <openssl/evp.h>
  15 #include <openssl/x509v3.h>
  16 #include "internal/asn1_int.h"
  17 #include "internal/evp_int.h"
  18 #include "internal/numbers.h"
  19
  20 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
  21
  22 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
  23
  24 /* This array needs to be in order of NIDs */
  25 static const EVP_PKEY_METHOD *standard_methods[] = {
  26 #ifndef OPENSSL_NO_RSA
  27     &rsa_pkey_meth,
  28 #endif
  29 #ifndef OPENSSL_NO_DH
  30     &dh_pkey_meth,
  31 #endif
  32 #ifndef OPENSSL_NO_DSA
  33     &dsa_pkey_meth,
  34 #endif
  35 #ifndef OPENSSL_NO_EC
  36     &ec_pkey_meth,
  37 #endif
  38     &hmac_pkey_meth,
  39 #ifndef OPENSSL_NO_CMAC
  40     &cmac_pkey_meth,
  41 #endif
  42 #ifndef OPENSSL_NO_RSA
  43     &rsa_pss_pkey_meth,
  44 #endif
  45 #ifndef OPENSSL_NO_DH
  46     &dhx_pkey_meth,
  47 #endif
  48 #ifndef OPENSSL_NO_SCRYPT
  49     &scrypt_pkey_meth,
  50 #endif
  51     &tls1_prf_pkey_meth,
  52 #ifndef OPENSSL_NO_EC
  53     &ecx25519_pkey_meth,
  54     &ecx448_pkey_meth,
  55 #endif
  56     &hkdf_pkey_meth,
  57 #ifndef OPENSSL_NO_POLY1305
  58     &poly1305_pkey_meth,
  59 #endif
  60 #ifndef OPENSSL_NO_SIPHASH
  61     &siphash_pkey_meth,
  62 #endif
  63 #ifndef OPENSSL_NO_EC
  64     &ed25519_pkey_meth,
  65     &ed448_pkey_meth,
  66 #endif
  67 };
  68
  69 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
  70                            pmeth);
  71
  72 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  73                      const EVP_PKEY_METHOD *const *b)
  74 {
  75     return ((*a)->pkey_id - (*b)->pkey_id);
  76 }
  77
  78 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
  79                              pmeth);
  80
  81 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
  82 {
  83     EVP_PKEY_METHOD tmp;
  84     const EVP_PKEY_METHOD *t = &tmp, **ret;
  85     tmp.pkey_id = type;
  86     if (app_pkey_methods) {
  87         int idx;
  88         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
  89         if (idx >= 0)
  90             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
  91     }
  92     ret = OBJ_bsearch_pmeth(&t, standard_methods,
  93                             sizeof(standard_methods) /
  94                             sizeof(EVP_PKEY_METHOD *));
  95     if (!ret || !*ret)
  96         return NULL;
  97     return *ret;
  98 }
  99
 100 static EVP_PKEY_CTX *int_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id)
 101 {
 102     EVP_PKEY_CTX *ret;
 103     const EVP_PKEY_METHOD *pmeth;
 104     if (id == -1) {
 105         if (!pkey || !pkey->ameth)
 106             return NULL;
 107         id = pkey->ameth->pkey_id;
 108     }
 109 #ifndef OPENSSL_NO_ENGINE
 110     if (e == NULL && pkey != NULL)
 111         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 112     /* Try to find an ENGINE which implements this method */
 113     if (e) {
 114         if (!ENGINE_init(e)) {
 115             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
 116             return NULL;
 117         }
 118     } else {
 119         e = ENGINE_get_pkey_meth_engine(id);
 120     }
 121
 122     /*
 123      * If an ENGINE handled this method look it up. Otherwise use internal
 124      * tables.
 125      */
 126
 127     if (e)
 128         pmeth = ENGINE_get_pkey_meth(e, id);
 129     else
 130 #endif
 131         pmeth = EVP_PKEY_meth_find(id);
 132
 133     if (pmeth == NULL) {
 134 #ifndef OPENSSL_NO_ENGINE
 135         ENGINE_finish(e);
 136 #endif
 137         EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
 138         return NULL;
 139     }
 140
 141     ret = OPENSSL_zalloc(sizeof(*ret));
 142     if (ret == NULL) {
 143 #ifndef OPENSSL_NO_ENGINE
 144         ENGINE_finish(e);
 145 #endif
 146         EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
 147         return NULL;
 148     }
 149     ret->engine = e;
 150     ret->pmeth = pmeth;
 151     ret->operation = EVP_PKEY_OP_UNDEFINED;
 152     ret->pkey = pkey;
 153     if (pkey)
 154         EVP_PKEY_up_ref(pkey);
 155
 156     if (pmeth->init) {
 157         if (pmeth->init(ret) <= 0) {
 158             ret->pmeth = NULL;
 159             EVP_PKEY_CTX_free(ret);
 160             return NULL;
 161         }
 162     }
 163
 164     return ret;
 165 }
 166
 167 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 168 {
 169     EVP_PKEY_METHOD *pmeth;
 170
 171     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 172     if (pmeth == NULL)
 173         return NULL;
 174
 175     pmeth->pkey_id = id;
 176     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 177     return pmeth;
 178 }
 179
 180 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 181                              const EVP_PKEY_METHOD *meth)
 182 {
 183     if (ppkey_id)
 184         *ppkey_id = meth->pkey_id;
 185     if (pflags)
 186         *pflags = meth->flags;
 187 }
 188
 189 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 190 {
 191
 192     dst->init = src->init;
 193     dst->copy = src->copy;
 194     dst->cleanup = src->cleanup;
 195
 196     dst->paramgen_init = src->paramgen_init;
 197     dst->paramgen = src->paramgen;
 198
 199     dst->keygen_init = src->keygen_init;
 200     dst->keygen = src->keygen;
 201
 202     dst->sign_init = src->sign_init;
 203     dst->sign = src->sign;
 204
 205     dst->verify_init = src->verify_init;
 206     dst->verify = src->verify;
 207
 208     dst->verify_recover_init = src->verify_recover_init;
 209     dst->verify_recover = src->verify_recover;
 210
 211     dst->signctx_init = src->signctx_init;
 212     dst->signctx = src->signctx;
 213
 214     dst->verifyctx_init = src->verifyctx_init;
 215     dst->verifyctx = src->verifyctx;
 216
 217     dst->encrypt_init = src->encrypt_init;
 218     dst->encrypt = src->encrypt;
 219
 220     dst->decrypt_init = src->decrypt_init;
 221     dst->decrypt = src->decrypt;
 222
 223     dst->derive_init = src->derive_init;
 224     dst->derive = src->derive;
 225
 226     dst->ctrl = src->ctrl;
 227     dst->ctrl_str = src->ctrl_str;
 228
 229     dst->check = src->check;
 230 }
 231
 232 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 233 {
 234     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 235         OPENSSL_free(pmeth);
 236 }
 237
 238 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 239 {
 240     return int_ctx_new(pkey, e, -1);
 241 }
 242
 243 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 244 {
 245     return int_ctx_new(NULL, e, id);
 246 }
 247
 248 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *pctx)
 249 {
 250     EVP_PKEY_CTX *rctx;
 251     if (!pctx->pmeth || !pctx->pmeth->copy)
 252         return NULL;
 253 #ifndef OPENSSL_NO_ENGINE
 254     /* Make sure it's safe to copy a pkey context using an ENGINE */
 255     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 256         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
 257         return 0;
 258     }
 259 #endif
 260     rctx = OPENSSL_malloc(sizeof(*rctx));
 261     if (rctx == NULL)
 262         return NULL;
 263
 264     rctx->pmeth = pctx->pmeth;
 265 #ifndef OPENSSL_NO_ENGINE
 266     rctx->engine = pctx->engine;
 267 #endif
 268
 269     if (pctx->pkey)
 270         EVP_PKEY_up_ref(pctx->pkey);
 271
 272     rctx->pkey = pctx->pkey;
 273
 274     if (pctx->peerkey)
 275         EVP_PKEY_up_ref(pctx->peerkey);
 276
 277     rctx->peerkey = pctx->peerkey;
 278
 279     rctx->data = NULL;
 280     rctx->app_data = NULL;
 281     rctx->operation = pctx->operation;
 282
 283     if (pctx->pmeth->copy(rctx, pctx) > 0)
 284         return rctx;
 285
 286     rctx->pmeth = NULL;
 287     EVP_PKEY_CTX_free(rctx);
 288     return NULL;
 289
 290 }
 291
 292 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 293 {
 294     if (app_pkey_methods == NULL) {
 295         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 296         if (app_pkey_methods == NULL)
 297             return 0;
 298     }
 299     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth))
 300         return 0;
 301     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 302     return 1;
 303 }
 304
 305 void evp_app_cleanup_int(void)
 306 {
 307     if (app_pkey_methods != NULL)
 308         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 309 }
 310
 311 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 312 {
 313     const EVP_PKEY_METHOD *ret;
 314
 315     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 316
 317     return ret == NULL ? 0 : 1;
 318 }
 319
 320 size_t EVP_PKEY_meth_get_count(void)
 321 {
 322     size_t rv = OSSL_NELEM(standard_methods);
 323
 324     if (app_pkey_methods)
 325         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 326     return rv;
 327 }
 328
 329 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 330 {
 331     if (idx < OSSL_NELEM(standard_methods))
 332         return standard_methods[idx];
 333     if (app_pkey_methods == NULL)
 334         return NULL;
 335     idx -= OSSL_NELEM(standard_methods);
 336     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 337         return NULL;
 338     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 339 }
 340
 341 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 342 {
 343     if (ctx == NULL)
 344         return;
 345     if (ctx->pmeth && ctx->pmeth->cleanup)
 346         ctx->pmeth->cleanup(ctx);
 347     EVP_PKEY_free(ctx->pkey);
 348     EVP_PKEY_free(ctx->peerkey);
 349 #ifndef OPENSSL_NO_ENGINE
 350     ENGINE_finish(ctx->engine);
 351 #endif
 352     OPENSSL_free(ctx);
 353 }
 354
 355 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
 356                       int cmd, int p1, void *p2)
 357 {
 358     int ret;
 359     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl) {
 360         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 361         return -2;
 362     }
 363     if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
 364         return -1;
 365
 366     if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
 367         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
 368         return -1;
 369     }
 370
 371     if ((optype != -1) && !(ctx->operation & optype)) {
 372         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
 373         return -1;
 374     }
 375
 376     ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
 377
 378     if (ret == -2)
 379         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 380
 381     return ret;
 382
 383 }
 384
 385 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
 386                              int cmd, uint64_t value)
 387 {
 388     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
 389 }
 390
 391 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
 392                           const char *name, const char *value)
 393 {
 394     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
 395         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 396         return -2;
 397     }
 398     if (strcmp(name, "digest") == 0)
 399         return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
 400                                value);
 401     return ctx->pmeth->ctrl_str(ctx, name, value);
 402 }
 403
 404 /* Utility functions to send a string of hex string to a ctrl */
 405
 406 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
 407 {
 408     size_t len;
 409
 410     len = strlen(str);
 411     if (len > INT_MAX)
 412         return -1;
 413     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
 414 }
 415
 416 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
 417 {
 418     unsigned char *bin;
 419     long binlen;
 420     int rv = -1;
 421
 422     bin = OPENSSL_hexstr2buf(hex, &binlen);
 423     if (bin == NULL)
 424         return 0;
 425     if (binlen <= INT_MAX)
 426         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
 427     OPENSSL_free(bin);
 428     return rv;
 429 }
 430
 431 /* Pass a message digest to a ctrl */
 432 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
 433 {
 434     const EVP_MD *m;
 435
 436     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
 437         EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
 438         return 0;
 439     }
 440     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
 441 }
 442
 443 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
 444 {
 445     return ctx->operation;
 446 }
 447
 448 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
 449 {
 450     ctx->keygen_info = dat;
 451     ctx->keygen_info_count = datlen;
 452 }
 453
 454 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
 455 {
 456     ctx->data = data;
 457 }
 458
 459 void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX *ctx)
 460 {
 461     return ctx->data;
 462 }
 463
 464 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
 465 {
 466     return ctx->pkey;
 467 }
 468
 469 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
 470 {
 471     return ctx->peerkey;
 472 }
 473
 474 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
 475 {
 476     ctx->app_data = data;
 477 }
 478
 479 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
 480 {
 481     return ctx->app_data;
 482 }
 483
 484 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
 485                             int (*init) (EVP_PKEY_CTX *ctx))
 486 {
 487     pmeth->init = init;
 488 }
 489
 490 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
 491                             int (*copy) (EVP_PKEY_CTX *dst,
 492                                          EVP_PKEY_CTX *src))
 493 {
 494     pmeth->copy = copy;
 495 }
 496
 497 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
 498                                void (*cleanup) (EVP_PKEY_CTX *ctx))
 499 {
 500     pmeth->cleanup = cleanup;
 501 }
 502
 503 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
 504                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
 505                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
 506                                                  EVP_PKEY *pkey))
 507 {
 508     pmeth->paramgen_init = paramgen_init;
 509     pmeth->paramgen = paramgen;
 510 }
 511
 512 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
 513                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
 514                               int (*keygen) (EVP_PKEY_CTX *ctx,
 515                                              EVP_PKEY *pkey))
 516 {
 517     pmeth->keygen_init = keygen_init;
 518     pmeth->keygen = keygen;
 519 }
 520
 521 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
 522                             int (*sign_init) (EVP_PKEY_CTX *ctx),
 523                             int (*sign) (EVP_PKEY_CTX *ctx,
 524                                          unsigned char *sig, size_t *siglen,
 525                                          const unsigned char *tbs,
 526                                          size_t tbslen))
 527 {
 528     pmeth->sign_init = sign_init;
 529     pmeth->sign = sign;
 530 }
 531
 532 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
 533                               int (*verify_init) (EVP_PKEY_CTX *ctx),
 534                               int (*verify) (EVP_PKEY_CTX *ctx,
 535                                              const unsigned char *sig,
 536                                              size_t siglen,
 537                                              const unsigned char *tbs,
 538                                              size_t tbslen))
 539 {
 540     pmeth->verify_init = verify_init;
 541     pmeth->verify = verify;
 542 }
 543
 544 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
 545                                       int (*verify_recover_init) (EVP_PKEY_CTX
 546                                                                   *ctx),
 547                                       int (*verify_recover) (EVP_PKEY_CTX
 548                                                              *ctx,
 549                                                              unsigned char
 550                                                              *sig,
 551                                                              size_t *siglen,
 552                                                              const unsigned
 553                                                              char *tbs,
 554                                                              size_t tbslen))
 555 {
 556     pmeth->verify_recover_init = verify_recover_init;
 557     pmeth->verify_recover = verify_recover;
 558 }
 559
 560 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
 561                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
 562                                                     EVP_MD_CTX *mctx),
 563                                int (*signctx) (EVP_PKEY_CTX *ctx,
 564                                                unsigned char *sig,
 565                                                size_t *siglen,
 566                                                EVP_MD_CTX *mctx))
 567 {
 568     pmeth->signctx_init = signctx_init;
 569     pmeth->signctx = signctx;
 570 }
 571
 572 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
 573                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
 574                                                         EVP_MD_CTX *mctx),
 575                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
 576                                                    const unsigned char *sig,
 577                                                    int siglen,
 578                                                    EVP_MD_CTX *mctx))
 579 {
 580     pmeth->verifyctx_init = verifyctx_init;
 581     pmeth->verifyctx = verifyctx;
 582 }
 583
 584 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
 585                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
 586                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
 587                                                  unsigned char *out,
 588                                                  size_t *outlen,
 589                                                  const unsigned char *in,
 590                                                  size_t inlen))
 591 {
 592     pmeth->encrypt_init = encrypt_init;
 593     pmeth->encrypt = encryptfn;
 594 }
 595
 596 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
 597                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
 598                                int (*decrypt) (EVP_PKEY_CTX *ctx,
 599                                                unsigned char *out,
 600                                                size_t *outlen,
 601                                                const unsigned char *in,
 602                                                size_t inlen))
 603 {
 604     pmeth->decrypt_init = decrypt_init;
 605     pmeth->decrypt = decrypt;
 606 }
 607
 608 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
 609                               int (*derive_init) (EVP_PKEY_CTX *ctx),
 610                               int (*derive) (EVP_PKEY_CTX *ctx,
 611                                              unsigned char *key,
 612                                              size_t *keylen))
 613 {
 614     pmeth->derive_init = derive_init;
 615     pmeth->derive = derive;
 616 }
 617
 618 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
 619                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
 620                                          void *p2),
 621                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
 622                                              const char *type,
 623                                              const char *value))
 624 {
 625     pmeth->ctrl = ctrl;
 626     pmeth->ctrl_str = ctrl_str;
 627 }
 628
 629 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
 630                              int (*check) (EVP_PKEY *pkey))
 631 {
 632     pmeth->check = check;
 633 }
 634
 635 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
 636                                     int (*check) (EVP_PKEY *pkey))
 637 {
 638     pmeth->public_check = check;
 639 }
 640
 641 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
 642                                    int (*check) (EVP_PKEY *pkey))
 643 {
 644     pmeth->param_check = check;
 645 }
 646
 647 void EVP_PKEY_meth_get_init(EVP_PKEY_METHOD *pmeth,
 648                             int (**pinit) (EVP_PKEY_CTX *ctx))
 649 {
 650     *pinit = pmeth->init;
 651 }
 652
 653 void EVP_PKEY_meth_get_copy(EVP_PKEY_METHOD *pmeth,
 654                             int (**pcopy) (EVP_PKEY_CTX *dst,
 655                                            EVP_PKEY_CTX *src))
 656 {
 657     *pcopy = pmeth->copy;
 658 }
 659
 660 void EVP_PKEY_meth_get_cleanup(EVP_PKEY_METHOD *pmeth,
 661                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
 662 {
 663     *pcleanup = pmeth->cleanup;
 664 }
 665
 666 void EVP_PKEY_meth_get_paramgen(EVP_PKEY_METHOD *pmeth,
 667                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
 668                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
 669                                                    EVP_PKEY *pkey))
 670 {
 671     if (pparamgen_init)
 672         *pparamgen_init = pmeth->paramgen_init;
 673     if (pparamgen)
 674         *pparamgen = pmeth->paramgen;
 675 }
 676
 677 void EVP_PKEY_meth_get_keygen(EVP_PKEY_METHOD *pmeth,
 678                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
 679                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
 680                                                EVP_PKEY *pkey))
 681 {
 682     if (pkeygen_init)
 683         *pkeygen_init = pmeth->keygen_init;
 684     if (pkeygen)
 685         *pkeygen = pmeth->keygen;
 686 }
 687
 688 void EVP_PKEY_meth_get_sign(EVP_PKEY_METHOD *pmeth,
 689                             int (**psign_init) (EVP_PKEY_CTX *ctx),
 690                             int (**psign) (EVP_PKEY_CTX *ctx,
 691                                            unsigned char *sig, size_t *siglen,
 692                                            const unsigned char *tbs,
 693                                            size_t tbslen))
 694 {
 695     if (psign_init)
 696         *psign_init = pmeth->sign_init;
 697     if (psign)
 698         *psign = pmeth->sign;
 699 }
 700
 701 void EVP_PKEY_meth_get_verify(EVP_PKEY_METHOD *pmeth,
 702                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
 703                               int (**pverify) (EVP_PKEY_CTX *ctx,
 704                                                const unsigned char *sig,
 705                                                size_t siglen,
 706                                                const unsigned char *tbs,
 707                                                size_t tbslen))
 708 {
 709     if (pverify_init)
 710         *pverify_init = pmeth->verify_init;
 711     if (pverify)
 712         *pverify = pmeth->verify;
 713 }
 714
 715 void EVP_PKEY_meth_get_verify_recover(EVP_PKEY_METHOD *pmeth,
 716                                       int (**pverify_recover_init) (EVP_PKEY_CTX
 717                                                                     *ctx),
 718                                       int (**pverify_recover) (EVP_PKEY_CTX
 719                                                                *ctx,
 720                                                                unsigned char
 721                                                                *sig,
 722                                                                size_t *siglen,
 723                                                                const unsigned
 724                                                                char *tbs,
 725                                                                size_t tbslen))
 726 {
 727     if (pverify_recover_init)
 728         *pverify_recover_init = pmeth->verify_recover_init;
 729     if (pverify_recover)
 730         *pverify_recover = pmeth->verify_recover;
 731 }
 732
 733 void EVP_PKEY_meth_get_signctx(EVP_PKEY_METHOD *pmeth,
 734                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
 735                                                       EVP_MD_CTX *mctx),
 736                                int (**psignctx) (EVP_PKEY_CTX *ctx,
 737                                                  unsigned char *sig,
 738                                                  size_t *siglen,
 739                                                  EVP_MD_CTX *mctx))
 740 {
 741     if (psignctx_init)
 742         *psignctx_init = pmeth->signctx_init;
 743     if (psignctx)
 744         *psignctx = pmeth->signctx;
 745 }
 746
 747 void EVP_PKEY_meth_get_verifyctx(EVP_PKEY_METHOD *pmeth,
 748                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
 749                                                           EVP_MD_CTX *mctx),
 750                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
 751                                                      const unsigned char *sig,
 752                                                      int siglen,
 753                                                      EVP_MD_CTX *mctx))
 754 {
 755     if (pverifyctx_init)
 756         *pverifyctx_init = pmeth->verifyctx_init;
 757     if (pverifyctx)
 758         *pverifyctx = pmeth->verifyctx;
 759 }
 760
 761 void EVP_PKEY_meth_get_encrypt(EVP_PKEY_METHOD *pmeth,
 762                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
 763                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
 764                                                    unsigned char *out,
 765                                                    size_t *outlen,
 766                                                    const unsigned char *in,
 767                                                    size_t inlen))
 768 {
 769     if (pencrypt_init)
 770         *pencrypt_init = pmeth->encrypt_init;
 771     if (pencryptfn)
 772         *pencryptfn = pmeth->encrypt;
 773 }
 774
 775 void EVP_PKEY_meth_get_decrypt(EVP_PKEY_METHOD *pmeth,
 776                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
 777                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
 778                                                  unsigned char *out,
 779                                                  size_t *outlen,
 780                                                  const unsigned char *in,
 781                                                  size_t inlen))
 782 {
 783     if (pdecrypt_init)
 784         *pdecrypt_init = pmeth->decrypt_init;
 785     if (pdecrypt)
 786         *pdecrypt = pmeth->decrypt;
 787 }
 788
 789 void EVP_PKEY_meth_get_derive(EVP_PKEY_METHOD *pmeth,
 790                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
 791                               int (**pderive) (EVP_PKEY_CTX *ctx,
 792                                                unsigned char *key,
 793                                                size_t *keylen))
 794 {
 795     if (pderive_init)
 796         *pderive_init = pmeth->derive_init;
 797     if (pderive)
 798         *pderive = pmeth->derive;
 799 }
 800
 801 void EVP_PKEY_meth_get_ctrl(EVP_PKEY_METHOD *pmeth,
 802                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
 803                                            void *p2),
 804                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
 805                                                const char *type,
 806                                                const char *value))
 807 {
 808     if (pctrl)
 809         *pctrl = pmeth->ctrl;
 810     if (pctrl_str)
 811         *pctrl_str = pmeth->ctrl_str;
 812 }
 813
 814 void EVP_PKEY_meth_get_check(EVP_PKEY_METHOD *pmeth,
 815                              int (**pcheck) (EVP_PKEY *pkey))
 816 {
 817     if (*pcheck)
 818         *pcheck = pmeth->check;
 819 }
 820
 821 void EVP_PKEY_meth_get_public_check(EVP_PKEY_METHOD *pmeth,
 822                                     int (**pcheck) (EVP_PKEY *pkey))
 823 {
 824     if (*pcheck)
 825         *pcheck = pmeth->public_check;
 826 }
 827
 828 void EVP_PKEY_meth_get_param_check(EVP_PKEY_METHOD *pmeth,
 829                                    int (**pcheck) (EVP_PKEY *pkey))
 830 {
 831     if (*pcheck)
 832         *pcheck = pmeth->param_check;
 833 }