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
 105     if (id == -1) {
 106         id = pkey->type;
 107     }
 108 #ifndef OPENSSL_NO_ENGINE
 109     if (e == NULL && pkey != NULL)
 110         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 111     /* Try to find an ENGINE which implements this method */
 112     if (e) {
 113         if (!ENGINE_init(e)) {
 114             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
 115             return NULL;
 116         }
 117     } else {
 118         e = ENGINE_get_pkey_meth_engine(id);
 119     }
 120
 121     /*
 122      * If an ENGINE handled this method look it up. Otherwise use internal
 123      * tables.
 124      */
 125     if (e)
 126         pmeth = ENGINE_get_pkey_meth(e, id);
 127     else
 128 #endif
 129         pmeth = EVP_PKEY_meth_find(id);
 130
 131     if (pmeth == NULL) {
 132 #ifndef OPENSSL_NO_ENGINE
 133         ENGINE_finish(e);
 134 #endif
 135         EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
 136         return NULL;
 137     }
 138
 139     ret = OPENSSL_zalloc(sizeof(*ret));
 140     if (ret == NULL) {
 141 #ifndef OPENSSL_NO_ENGINE
 142         ENGINE_finish(e);
 143 #endif
 144         EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
 145         return NULL;
 146     }
 147     ret->engine = e;
 148     ret->pmeth = pmeth;
 149     ret->operation = EVP_PKEY_OP_UNDEFINED;
 150     ret->pkey = pkey;
 151     if (pkey)
 152         EVP_PKEY_up_ref(pkey);
 153
 154     if (pmeth->init) {
 155         if (pmeth->init(ret) <= 0) {
 156             ret->pmeth = NULL;
 157             EVP_PKEY_CTX_free(ret);
 158             return NULL;
 159         }
 160     }
 161
 162     return ret;
 163 }
 164
 165 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 166 {
 167     EVP_PKEY_METHOD *pmeth;
 168
 169     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 170     if (pmeth == NULL) {
 171         EVPerr(EVP_F_EVP_PKEY_METH_NEW, ERR_R_MALLOC_FAILURE);
 172         return NULL;
 173     }
 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         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_MALLOC_FAILURE);
 263         return NULL;
 264     }
 265
 266     rctx->pmeth = pctx->pmeth;
 267 #ifndef OPENSSL_NO_ENGINE
 268     rctx->engine = pctx->engine;
 269 #endif
 270
 271     if (pctx->pkey)
 272         EVP_PKEY_up_ref(pctx->pkey);
 273
 274     rctx->pkey = pctx->pkey;
 275
 276     if (pctx->peerkey)
 277         EVP_PKEY_up_ref(pctx->peerkey);
 278
 279     rctx->peerkey = pctx->peerkey;
 280
 281     rctx->data = NULL;
 282     rctx->app_data = NULL;
 283     rctx->operation = pctx->operation;
 284
 285     if (pctx->pmeth->copy(rctx, pctx) > 0)
 286         return rctx;
 287
 288     rctx->pmeth = NULL;
 289     EVP_PKEY_CTX_free(rctx);
 290     return NULL;
 291
 292 }
 293
 294 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 295 {
 296     if (app_pkey_methods == NULL) {
 297         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 298         if (app_pkey_methods == NULL){
 299             EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 300             return 0;
 301         }
 302     }
 303     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 304         EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 305         return 0;
 306     }
 307     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 308     return 1;
 309 }
 310
 311 void evp_app_cleanup_int(void)
 312 {
 313     if (app_pkey_methods != NULL)
 314         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 315 }
 316
 317 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 318 {
 319     const EVP_PKEY_METHOD *ret;
 320
 321     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 322
 323     return ret == NULL ? 0 : 1;
 324 }
 325
 326 size_t EVP_PKEY_meth_get_count(void)
 327 {
 328     size_t rv = OSSL_NELEM(standard_methods);
 329
 330     if (app_pkey_methods)
 331         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 332     return rv;
 333 }
 334
 335 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 336 {
 337     if (idx < OSSL_NELEM(standard_methods))
 338         return standard_methods[idx];
 339     if (app_pkey_methods == NULL)
 340         return NULL;
 341     idx -= OSSL_NELEM(standard_methods);
 342     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 343         return NULL;
 344     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 345 }
 346
 347 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 348 {
 349     if (ctx == NULL)
 350         return;
 351     if (ctx->pmeth && ctx->pmeth->cleanup)
 352         ctx->pmeth->cleanup(ctx);
 353     EVP_PKEY_free(ctx->pkey);
 354     EVP_PKEY_free(ctx->peerkey);
 355 #ifndef OPENSSL_NO_ENGINE
 356     ENGINE_finish(ctx->engine);
 357 #endif
 358     OPENSSL_free(ctx);
 359 }
 360
 361 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
 362                       int cmd, int p1, void *p2)
 363 {
 364     int ret;
 365     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl) {
 366         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 367         return -2;
 368     }
 369     if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
 370         return -1;
 371
 372     if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
 373         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
 374         return -1;
 375     }
 376
 377     if ((optype != -1) && !(ctx->operation & optype)) {
 378         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
 379         return -1;
 380     }
 381
 382     ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
 383
 384     if (ret == -2)
 385         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 386
 387     return ret;
 388
 389 }
 390
 391 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
 392                              int cmd, uint64_t value)
 393 {
 394     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
 395 }
 396
 397 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
 398                           const char *name, const char *value)
 399 {
 400     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
 401         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 402         return -2;
 403     }
 404     if (strcmp(name, "digest") == 0)
 405         return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
 406                                value);
 407     return ctx->pmeth->ctrl_str(ctx, name, value);
 408 }
 409
 410 /* Utility functions to send a string of hex string to a ctrl */
 411
 412 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
 413 {
 414     size_t len;
 415
 416     len = strlen(str);
 417     if (len > INT_MAX)
 418         return -1;
 419     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
 420 }
 421
 422 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
 423 {
 424     unsigned char *bin;
 425     long binlen;
 426     int rv = -1;
 427
 428     bin = OPENSSL_hexstr2buf(hex, &binlen);
 429     if (bin == NULL)
 430         return 0;
 431     if (binlen <= INT_MAX)
 432         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
 433     OPENSSL_free(bin);
 434     return rv;
 435 }
 436
 437 /* Pass a message digest to a ctrl */
 438 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
 439 {
 440     const EVP_MD *m;
 441
 442     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
 443         EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
 444         return 0;
 445     }
 446     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
 447 }
 448
 449 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
 450 {
 451     return ctx->operation;
 452 }
 453
 454 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
 455 {
 456     ctx->keygen_info = dat;
 457     ctx->keygen_info_count = datlen;
 458 }
 459
 460 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
 461 {
 462     ctx->data = data;
 463 }
 464
 465 void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX *ctx)
 466 {
 467     return ctx->data;
 468 }
 469
 470 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
 471 {
 472     return ctx->pkey;
 473 }
 474
 475 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
 476 {
 477     return ctx->peerkey;
 478 }
 479
 480 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
 481 {
 482     ctx->app_data = data;
 483 }
 484
 485 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
 486 {
 487     return ctx->app_data;
 488 }
 489
 490 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
 491                             int (*init) (EVP_PKEY_CTX *ctx))
 492 {
 493     pmeth->init = init;
 494 }
 495
 496 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
 497                             int (*copy) (EVP_PKEY_CTX *dst,
 498                                          EVP_PKEY_CTX *src))
 499 {
 500     pmeth->copy = copy;
 501 }
 502
 503 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
 504                                void (*cleanup) (EVP_PKEY_CTX *ctx))
 505 {
 506     pmeth->cleanup = cleanup;
 507 }
 508
 509 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
 510                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
 511                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
 512                                                  EVP_PKEY *pkey))
 513 {
 514     pmeth->paramgen_init = paramgen_init;
 515     pmeth->paramgen = paramgen;
 516 }
 517
 518 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
 519                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
 520                               int (*keygen) (EVP_PKEY_CTX *ctx,
 521                                              EVP_PKEY *pkey))
 522 {
 523     pmeth->keygen_init = keygen_init;
 524     pmeth->keygen = keygen;
 525 }
 526
 527 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
 528                             int (*sign_init) (EVP_PKEY_CTX *ctx),
 529                             int (*sign) (EVP_PKEY_CTX *ctx,
 530                                          unsigned char *sig, size_t *siglen,
 531                                          const unsigned char *tbs,
 532                                          size_t tbslen))
 533 {
 534     pmeth->sign_init = sign_init;
 535     pmeth->sign = sign;
 536 }
 537
 538 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
 539                               int (*verify_init) (EVP_PKEY_CTX *ctx),
 540                               int (*verify) (EVP_PKEY_CTX *ctx,
 541                                              const unsigned char *sig,
 542                                              size_t siglen,
 543                                              const unsigned char *tbs,
 544                                              size_t tbslen))
 545 {
 546     pmeth->verify_init = verify_init;
 547     pmeth->verify = verify;
 548 }
 549
 550 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
 551                                       int (*verify_recover_init) (EVP_PKEY_CTX
 552                                                                   *ctx),
 553                                       int (*verify_recover) (EVP_PKEY_CTX
 554                                                              *ctx,
 555                                                              unsigned char
 556                                                              *sig,
 557                                                              size_t *siglen,
 558                                                              const unsigned
 559                                                              char *tbs,
 560                                                              size_t tbslen))
 561 {
 562     pmeth->verify_recover_init = verify_recover_init;
 563     pmeth->verify_recover = verify_recover;
 564 }
 565
 566 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
 567                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
 568                                                     EVP_MD_CTX *mctx),
 569                                int (*signctx) (EVP_PKEY_CTX *ctx,
 570                                                unsigned char *sig,
 571                                                size_t *siglen,
 572                                                EVP_MD_CTX *mctx))
 573 {
 574     pmeth->signctx_init = signctx_init;
 575     pmeth->signctx = signctx;
 576 }
 577
 578 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
 579                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
 580                                                         EVP_MD_CTX *mctx),
 581                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
 582                                                    const unsigned char *sig,
 583                                                    int siglen,
 584                                                    EVP_MD_CTX *mctx))
 585 {
 586     pmeth->verifyctx_init = verifyctx_init;
 587     pmeth->verifyctx = verifyctx;
 588 }
 589
 590 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
 591                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
 592                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
 593                                                  unsigned char *out,
 594                                                  size_t *outlen,
 595                                                  const unsigned char *in,
 596                                                  size_t inlen))
 597 {
 598     pmeth->encrypt_init = encrypt_init;
 599     pmeth->encrypt = encryptfn;
 600 }
 601
 602 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
 603                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
 604                                int (*decrypt) (EVP_PKEY_CTX *ctx,
 605                                                unsigned char *out,
 606                                                size_t *outlen,
 607                                                const unsigned char *in,
 608                                                size_t inlen))
 609 {
 610     pmeth->decrypt_init = decrypt_init;
 611     pmeth->decrypt = decrypt;
 612 }
 613
 614 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
 615                               int (*derive_init) (EVP_PKEY_CTX *ctx),
 616                               int (*derive) (EVP_PKEY_CTX *ctx,
 617                                              unsigned char *key,
 618                                              size_t *keylen))
 619 {
 620     pmeth->derive_init = derive_init;
 621     pmeth->derive = derive;
 622 }
 623
 624 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
 625                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
 626                                          void *p2),
 627                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
 628                                              const char *type,
 629                                              const char *value))
 630 {
 631     pmeth->ctrl = ctrl;
 632     pmeth->ctrl_str = ctrl_str;
 633 }
 634
 635 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
 636                              int (*check) (EVP_PKEY *pkey))
 637 {
 638     pmeth->check = check;
 639 }
 640
 641 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
 642                                     int (*check) (EVP_PKEY *pkey))
 643 {
 644     pmeth->public_check = check;
 645 }
 646
 647 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
 648                                    int (*check) (EVP_PKEY *pkey))
 649 {
 650     pmeth->param_check = check;
 651 }
 652
 653 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
 654                             int (**pinit) (EVP_PKEY_CTX *ctx))
 655 {
 656     *pinit = pmeth->init;
 657 }
 658
 659 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
 660                             int (**pcopy) (EVP_PKEY_CTX *dst,
 661                                            EVP_PKEY_CTX *src))
 662 {
 663     *pcopy = pmeth->copy;
 664 }
 665
 666 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
 667                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
 668 {
 669     *pcleanup = pmeth->cleanup;
 670 }
 671
 672 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
 673                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
 674                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
 675                                                    EVP_PKEY *pkey))
 676 {
 677     if (pparamgen_init)
 678         *pparamgen_init = pmeth->paramgen_init;
 679     if (pparamgen)
 680         *pparamgen = pmeth->paramgen;
 681 }
 682
 683 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
 684                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
 685                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
 686                                                EVP_PKEY *pkey))
 687 {
 688     if (pkeygen_init)
 689         *pkeygen_init = pmeth->keygen_init;
 690     if (pkeygen)
 691         *pkeygen = pmeth->keygen;
 692 }
 693
 694 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
 695                             int (**psign_init) (EVP_PKEY_CTX *ctx),
 696                             int (**psign) (EVP_PKEY_CTX *ctx,
 697                                            unsigned char *sig, size_t *siglen,
 698                                            const unsigned char *tbs,
 699                                            size_t tbslen))
 700 {
 701     if (psign_init)
 702         *psign_init = pmeth->sign_init;
 703     if (psign)
 704         *psign = pmeth->sign;
 705 }
 706
 707 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
 708                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
 709                               int (**pverify) (EVP_PKEY_CTX *ctx,
 710                                                const unsigned char *sig,
 711                                                size_t siglen,
 712                                                const unsigned char *tbs,
 713                                                size_t tbslen))
 714 {
 715     if (pverify_init)
 716         *pverify_init = pmeth->verify_init;
 717     if (pverify)
 718         *pverify = pmeth->verify;
 719 }
 720
 721 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
 722                                       int (**pverify_recover_init) (EVP_PKEY_CTX
 723                                                                     *ctx),
 724                                       int (**pverify_recover) (EVP_PKEY_CTX
 725                                                                *ctx,
 726                                                                unsigned char
 727                                                                *sig,
 728                                                                size_t *siglen,
 729                                                                const unsigned
 730                                                                char *tbs,
 731                                                                size_t tbslen))
 732 {
 733     if (pverify_recover_init)
 734         *pverify_recover_init = pmeth->verify_recover_init;
 735     if (pverify_recover)
 736         *pverify_recover = pmeth->verify_recover;
 737 }
 738
 739 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
 740                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
 741                                                       EVP_MD_CTX *mctx),
 742                                int (**psignctx) (EVP_PKEY_CTX *ctx,
 743                                                  unsigned char *sig,
 744                                                  size_t *siglen,
 745                                                  EVP_MD_CTX *mctx))
 746 {
 747     if (psignctx_init)
 748         *psignctx_init = pmeth->signctx_init;
 749     if (psignctx)
 750         *psignctx = pmeth->signctx;
 751 }
 752
 753 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
 754                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
 755                                                           EVP_MD_CTX *mctx),
 756                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
 757                                                      const unsigned char *sig,
 758                                                      int siglen,
 759                                                      EVP_MD_CTX *mctx))
 760 {
 761     if (pverifyctx_init)
 762         *pverifyctx_init = pmeth->verifyctx_init;
 763     if (pverifyctx)
 764         *pverifyctx = pmeth->verifyctx;
 765 }
 766
 767 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
 768                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
 769                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
 770                                                    unsigned char *out,
 771                                                    size_t *outlen,
 772                                                    const unsigned char *in,
 773                                                    size_t inlen))
 774 {
 775     if (pencrypt_init)
 776         *pencrypt_init = pmeth->encrypt_init;
 777     if (pencryptfn)
 778         *pencryptfn = pmeth->encrypt;
 779 }
 780
 781 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
 782                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
 783                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
 784                                                  unsigned char *out,
 785                                                  size_t *outlen,
 786                                                  const unsigned char *in,
 787                                                  size_t inlen))
 788 {
 789     if (pdecrypt_init)
 790         *pdecrypt_init = pmeth->decrypt_init;
 791     if (pdecrypt)
 792         *pdecrypt = pmeth->decrypt;
 793 }
 794
 795 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
 796                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
 797                               int (**pderive) (EVP_PKEY_CTX *ctx,
 798                                                unsigned char *key,
 799                                                size_t *keylen))
 800 {
 801     if (pderive_init)
 802         *pderive_init = pmeth->derive_init;
 803     if (pderive)
 804         *pderive = pmeth->derive;
 805 }
 806
 807 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
 808                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
 809                                            void *p2),
 810                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
 811                                                const char *type,
 812                                                const char *value))
 813 {
 814     if (pctrl)
 815         *pctrl = pmeth->ctrl;
 816     if (pctrl_str)
 817         *pctrl_str = pmeth->ctrl_str;
 818 }
 819
 820 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
 821                              int (**pcheck) (EVP_PKEY *pkey))
 822 {
 823     if (*pcheck)
 824         *pcheck = pmeth->check;
 825 }
 826
 827 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
 828                                     int (**pcheck) (EVP_PKEY *pkey))
 829 {
 830     if (*pcheck)
 831         *pcheck = pmeth->public_check;
 832 }
 833
 834 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
 835                                    int (**pcheck) (EVP_PKEY *pkey))
 836 {
 837     if (*pcheck)
 838         *pcheck = pmeth->param_check;
 839 }