crypto/evp/pmeth_lib.c

   1 /*
   2  * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
   3  *
   4  * Licensed under the Apache License 2.0 (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 <openssl/engine.h>
  13 #include <openssl/evp.h>
  14 #include <openssl/x509v3.h>
  15 #include <openssl/core_names.h>
  16 #include <openssl/dh.h>
  17 #include "internal/cryptlib.h"
  18 #include "internal/asn1_int.h"
  19 #include "internal/evp_int.h"
  20 #include "internal/numbers.h"
  21 #include "evp_locl.h"
  22
  23 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
  24
  25 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
  26
  27 /* This array needs to be in order of NIDs */
  28 static const EVP_PKEY_METHOD *standard_methods[] = {
  29 #ifndef OPENSSL_NO_RSA
  30     &rsa_pkey_meth,
  31 #endif
  32 #ifndef OPENSSL_NO_DH
  33     &dh_pkey_meth,
  34 #endif
  35 #ifndef OPENSSL_NO_DSA
  36     &dsa_pkey_meth,
  37 #endif
  38 #ifndef OPENSSL_NO_EC
  39     &ec_pkey_meth,
  40 #endif
  41     &hmac_pkey_meth,
  42 #ifndef OPENSSL_NO_CMAC
  43     &cmac_pkey_meth,
  44 #endif
  45 #ifndef OPENSSL_NO_RSA
  46     &rsa_pss_pkey_meth,
  47 #endif
  48 #ifndef OPENSSL_NO_DH
  49     &dhx_pkey_meth,
  50 #endif
  51 #ifndef OPENSSL_NO_SCRYPT
  52     &scrypt_pkey_meth,
  53 #endif
  54     &tls1_prf_pkey_meth,
  55 #ifndef OPENSSL_NO_EC
  56     &ecx25519_pkey_meth,
  57     &ecx448_pkey_meth,
  58 #endif
  59     &hkdf_pkey_meth,
  60 #ifndef OPENSSL_NO_POLY1305
  61     &poly1305_pkey_meth,
  62 #endif
  63 #ifndef OPENSSL_NO_SIPHASH
  64     &siphash_pkey_meth,
  65 #endif
  66 #ifndef OPENSSL_NO_EC
  67     &ed25519_pkey_meth,
  68     &ed448_pkey_meth,
  69 #endif
  70 #ifndef OPENSSL_NO_SM2
  71     &sm2_pkey_meth,
  72 #endif
  73 };
  74
  75 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
  76                            pmeth);
  77
  78 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  79                      const EVP_PKEY_METHOD *const *b)
  80 {
  81     return ((*a)->pkey_id - (*b)->pkey_id);
  82 }
  83
  84 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
  85                              pmeth);
  86
  87 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
  88 {
  89     EVP_PKEY_METHOD tmp;
  90     const EVP_PKEY_METHOD *t = &tmp, **ret;
  91     tmp.pkey_id = type;
  92     if (app_pkey_methods) {
  93         int idx;
  94         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
  95         if (idx >= 0)
  96             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
  97     }
  98     ret = OBJ_bsearch_pmeth(&t, standard_methods,
  99                             sizeof(standard_methods) /
 100                             sizeof(EVP_PKEY_METHOD *));
 101     if (!ret || !*ret)
 102         return NULL;
 103     return *ret;
 104 }
 105
 106 static EVP_PKEY_CTX *int_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id)
 107 {
 108     EVP_PKEY_CTX *ret;
 109     const EVP_PKEY_METHOD *pmeth;
 110
 111     if (id == -1) {
 112         if (pkey == NULL)
 113             return 0;
 114         id = pkey->type;
 115     }
 116 #ifndef OPENSSL_NO_ENGINE
 117     if (e == NULL && pkey != NULL)
 118         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 119     /* Try to find an ENGINE which implements this method */
 120     if (e) {
 121         if (!ENGINE_init(e)) {
 122             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
 123             return NULL;
 124         }
 125     } else {
 126         e = ENGINE_get_pkey_meth_engine(id);
 127     }
 128
 129     /*
 130      * If an ENGINE handled this method look it up. Otherwise use internal
 131      * tables.
 132      */
 133     if (e)
 134         pmeth = ENGINE_get_pkey_meth(e, id);
 135     else
 136 #endif
 137         pmeth = EVP_PKEY_meth_find(id);
 138
 139     if (pmeth == NULL) {
 140 #ifndef OPENSSL_NO_ENGINE
 141         ENGINE_finish(e);
 142 #endif
 143         EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
 144         return NULL;
 145     }
 146
 147     ret = OPENSSL_zalloc(sizeof(*ret));
 148     if (ret == NULL) {
 149 #ifndef OPENSSL_NO_ENGINE
 150         ENGINE_finish(e);
 151 #endif
 152         EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
 153         return NULL;
 154     }
 155     ret->engine = e;
 156     ret->pmeth = pmeth;
 157     ret->operation = EVP_PKEY_OP_UNDEFINED;
 158     ret->pkey = pkey;
 159     if (pkey != NULL)
 160         EVP_PKEY_up_ref(pkey);
 161
 162     if (pmeth->init) {
 163         if (pmeth->init(ret) <= 0) {
 164             ret->pmeth = NULL;
 165             EVP_PKEY_CTX_free(ret);
 166             return NULL;
 167         }
 168     }
 169
 170     return ret;
 171 }
 172
 173 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 174 {
 175     EVP_PKEY_METHOD *pmeth;
 176
 177     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 178     if (pmeth == NULL) {
 179         EVPerr(EVP_F_EVP_PKEY_METH_NEW, ERR_R_MALLOC_FAILURE);
 180         return NULL;
 181     }
 182
 183     pmeth->pkey_id = id;
 184     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 185     return pmeth;
 186 }
 187
 188 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 189                              const EVP_PKEY_METHOD *meth)
 190 {
 191     if (ppkey_id)
 192         *ppkey_id = meth->pkey_id;
 193     if (pflags)
 194         *pflags = meth->flags;
 195 }
 196
 197 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 198 {
 199
 200     dst->init = src->init;
 201     dst->copy = src->copy;
 202     dst->cleanup = src->cleanup;
 203
 204     dst->paramgen_init = src->paramgen_init;
 205     dst->paramgen = src->paramgen;
 206
 207     dst->keygen_init = src->keygen_init;
 208     dst->keygen = src->keygen;
 209
 210     dst->sign_init = src->sign_init;
 211     dst->sign = src->sign;
 212
 213     dst->verify_init = src->verify_init;
 214     dst->verify = src->verify;
 215
 216     dst->verify_recover_init = src->verify_recover_init;
 217     dst->verify_recover = src->verify_recover;
 218
 219     dst->signctx_init = src->signctx_init;
 220     dst->signctx = src->signctx;
 221
 222     dst->verifyctx_init = src->verifyctx_init;
 223     dst->verifyctx = src->verifyctx;
 224
 225     dst->encrypt_init = src->encrypt_init;
 226     dst->encrypt = src->encrypt;
 227
 228     dst->decrypt_init = src->decrypt_init;
 229     dst->decrypt = src->decrypt;
 230
 231     dst->derive_init = src->derive_init;
 232     dst->derive = src->derive;
 233
 234     dst->ctrl = src->ctrl;
 235     dst->ctrl_str = src->ctrl_str;
 236
 237     dst->check = src->check;
 238 }
 239
 240 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 241 {
 242     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 243         OPENSSL_free(pmeth);
 244 }
 245
 246 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 247 {
 248     return int_ctx_new(pkey, e, -1);
 249 }
 250
 251 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 252 {
 253     return int_ctx_new(NULL, e, id);
 254 }
 255
 256 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 257 {
 258     EVP_PKEY_CTX *rctx;
 259
 260     if (((pctx->pmeth == NULL) || (pctx->pmeth->copy == NULL))
 261             && pctx->exchprovctx == NULL)
 262         return NULL;
 263 #ifndef OPENSSL_NO_ENGINE
 264     /* Make sure it's safe to copy a pkey context using an ENGINE */
 265     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 266         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
 267         return 0;
 268     }
 269 #endif
 270     rctx = OPENSSL_zalloc(sizeof(*rctx));
 271     if (rctx == NULL) {
 272         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_MALLOC_FAILURE);
 273         return NULL;
 274     }
 275
 276     if (pctx->pkey != NULL)
 277         EVP_PKEY_up_ref(pctx->pkey);
 278     rctx->pkey = pctx->pkey;
 279     rctx->operation = pctx->operation;
 280
 281     if (pctx->exchprovctx != NULL) {
 282         if (!ossl_assert(pctx->exchange != NULL))
 283             return NULL;
 284         rctx->exchange = pctx->exchange;
 285         if (!EVP_KEYEXCH_up_ref(rctx->exchange)) {
 286             OPENSSL_free(rctx);
 287             return NULL;
 288         }
 289         rctx->exchprovctx = pctx->exchange->dupctx(pctx->exchprovctx);
 290         if (rctx->exchprovctx == NULL) {
 291             EVP_KEYEXCH_free(rctx->exchange);
 292             OPENSSL_free(rctx);
 293             return NULL;
 294         }
 295         return rctx;
 296     }
 297
 298     rctx->pmeth = pctx->pmeth;
 299 #ifndef OPENSSL_NO_ENGINE
 300     rctx->engine = pctx->engine;
 301 #endif
 302
 303     if (pctx->peerkey)
 304         EVP_PKEY_up_ref(pctx->peerkey);
 305     rctx->peerkey = pctx->peerkey;
 306
 307     if (pctx->pmeth->copy(rctx, pctx) > 0)
 308         return rctx;
 309
 310     rctx->pmeth = NULL;
 311     EVP_PKEY_CTX_free(rctx);
 312     return NULL;
 313
 314 }
 315
 316 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 317 {
 318     if (app_pkey_methods == NULL) {
 319         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 320         if (app_pkey_methods == NULL){
 321             EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 322             return 0;
 323         }
 324     }
 325     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 326         EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 327         return 0;
 328     }
 329     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 330     return 1;
 331 }
 332
 333 void evp_app_cleanup_int(void)
 334 {
 335     if (app_pkey_methods != NULL)
 336         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 337 }
 338
 339 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 340 {
 341     const EVP_PKEY_METHOD *ret;
 342
 343     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 344
 345     return ret == NULL ? 0 : 1;
 346 }
 347
 348 size_t EVP_PKEY_meth_get_count(void)
 349 {
 350     size_t rv = OSSL_NELEM(standard_methods);
 351
 352     if (app_pkey_methods)
 353         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 354     return rv;
 355 }
 356
 357 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 358 {
 359     if (idx < OSSL_NELEM(standard_methods))
 360         return standard_methods[idx];
 361     if (app_pkey_methods == NULL)
 362         return NULL;
 363     idx -= OSSL_NELEM(standard_methods);
 364     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 365         return NULL;
 366     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 367 }
 368
 369 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 370 {
 371     if (ctx == NULL)
 372         return;
 373     if (ctx->pmeth && ctx->pmeth->cleanup)
 374         ctx->pmeth->cleanup(ctx);
 375
 376     if (ctx->exchprovctx != NULL && ctx->exchange != NULL)
 377         ctx->exchange->freectx(ctx->exchprovctx);
 378
 379     EVP_KEYEXCH_free(ctx->exchange);
 380
 381     EVP_PKEY_free(ctx->pkey);
 382     EVP_PKEY_free(ctx->peerkey);
 383 #ifndef OPENSSL_NO_ENGINE
 384     ENGINE_finish(ctx->engine);
 385 #endif
 386     OPENSSL_free(ctx);
 387 }
 388
 389 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 390 {
 391     if (ctx->exchprovctx != NULL && ctx->exchange != NULL)
 392         return ctx->exchange->set_params(ctx->exchprovctx, params);
 393     return 0;
 394 }
 395
 396 int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad)
 397 {
 398     OSSL_PARAM dh_pad_params[2];
 399
 400     /* TODO(3.0): Remove this eventually when no more legacy */
 401     if (ctx->exchprovctx == NULL)
 402         return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_DERIVE,
 403                                  EVP_PKEY_CTRL_DH_PAD, pad, NULL);
 404
 405     dh_pad_params[0] = OSSL_PARAM_construct_int(OSSL_EXCHANGE_PARAM_PAD, &pad);
 406     dh_pad_params[1] = OSSL_PARAM_construct_end();
 407
 408     return EVP_PKEY_CTX_set_params(ctx, dh_pad_params);
 409 }
 410
 411 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
 412                                 int cmd, int p1, void *p2)
 413 {
 414     switch (cmd) {
 415     case EVP_PKEY_CTRL_DH_PAD:
 416         return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
 417     }
 418     return 0;
 419 }
 420
 421 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
 422                       int cmd, int p1, void *p2)
 423 {
 424     int ret;
 425
 426     if (ctx == NULL) {
 427         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 428         return -2;
 429     }
 430
 431     if (ctx->exchprovctx != NULL)
 432         return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
 433
 434     if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
 435         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 436         return -2;
 437     }
 438     if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
 439         return -1;
 440
 441     /* Skip the operation checks since this is called in a very early stage */
 442     if (ctx->pmeth->digest_custom != NULL)
 443         goto doit;
 444
 445     if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
 446         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
 447         return -1;
 448     }
 449
 450     if ((optype != -1) && !(ctx->operation & optype)) {
 451         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
 452         return -1;
 453     }
 454
 455  doit:
 456     ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
 457
 458     if (ret == -2)
 459         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 460
 461     return ret;
 462 }
 463
 464 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
 465                              int cmd, uint64_t value)
 466 {
 467     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
 468 }
 469
 470 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
 471                                     const char *value)
 472 {
 473     if (strcmp(name, "dh_pad") == 0) {
 474         int pad;
 475
 476         pad = atoi(value);
 477         return EVP_PKEY_CTX_set_dh_pad(ctx, pad);
 478     }
 479     return 0;
 480 }
 481
 482 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
 483                           const char *name, const char *value)
 484 {
 485     if (ctx == NULL) {
 486         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 487         return -2;
 488     }
 489
 490     if (ctx->exchprovctx != NULL)
 491         return legacy_ctrl_str_to_param(ctx, name, value);
 492
 493     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
 494         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 495         return -2;
 496     }
 497     if (strcmp(name, "digest") == 0)
 498         return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
 499                                value);
 500     return ctx->pmeth->ctrl_str(ctx, name, value);
 501 }
 502
 503 /* Utility functions to send a string of hex string to a ctrl */
 504
 505 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
 506 {
 507     size_t len;
 508
 509     len = strlen(str);
 510     if (len > INT_MAX)
 511         return -1;
 512     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
 513 }
 514
 515 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
 516 {
 517     unsigned char *bin;
 518     long binlen;
 519     int rv = -1;
 520
 521     bin = OPENSSL_hexstr2buf(hex, &binlen);
 522     if (bin == NULL)
 523         return 0;
 524     if (binlen <= INT_MAX)
 525         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
 526     OPENSSL_free(bin);
 527     return rv;
 528 }
 529
 530 /* Pass a message digest to a ctrl */
 531 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
 532 {
 533     const EVP_MD *m;
 534
 535     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
 536         EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
 537         return 0;
 538     }
 539     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
 540 }
 541
 542 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
 543 {
 544     return ctx->operation;
 545 }
 546
 547 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
 548 {
 549     ctx->keygen_info = dat;
 550     ctx->keygen_info_count = datlen;
 551 }
 552
 553 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
 554 {
 555     ctx->data = data;
 556 }
 557
 558 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
 559 {
 560     return ctx->data;
 561 }
 562
 563 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
 564 {
 565     return ctx->pkey;
 566 }
 567
 568 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
 569 {
 570     return ctx->peerkey;
 571 }
 572
 573 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
 574 {
 575     ctx->app_data = data;
 576 }
 577
 578 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
 579 {
 580     return ctx->app_data;
 581 }
 582
 583 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
 584                             int (*init) (EVP_PKEY_CTX *ctx))
 585 {
 586     pmeth->init = init;
 587 }
 588
 589 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
 590                             int (*copy) (EVP_PKEY_CTX *dst,
 591                                          const EVP_PKEY_CTX *src))
 592 {
 593     pmeth->copy = copy;
 594 }
 595
 596 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
 597                                void (*cleanup) (EVP_PKEY_CTX *ctx))
 598 {
 599     pmeth->cleanup = cleanup;
 600 }
 601
 602 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
 603                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
 604                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
 605                                                  EVP_PKEY *pkey))
 606 {
 607     pmeth->paramgen_init = paramgen_init;
 608     pmeth->paramgen = paramgen;
 609 }
 610
 611 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
 612                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
 613                               int (*keygen) (EVP_PKEY_CTX *ctx,
 614                                              EVP_PKEY *pkey))
 615 {
 616     pmeth->keygen_init = keygen_init;
 617     pmeth->keygen = keygen;
 618 }
 619
 620 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
 621                             int (*sign_init) (EVP_PKEY_CTX *ctx),
 622                             int (*sign) (EVP_PKEY_CTX *ctx,
 623                                          unsigned char *sig, size_t *siglen,
 624                                          const unsigned char *tbs,
 625                                          size_t tbslen))
 626 {
 627     pmeth->sign_init = sign_init;
 628     pmeth->sign = sign;
 629 }
 630
 631 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
 632                               int (*verify_init) (EVP_PKEY_CTX *ctx),
 633                               int (*verify) (EVP_PKEY_CTX *ctx,
 634                                              const unsigned char *sig,
 635                                              size_t siglen,
 636                                              const unsigned char *tbs,
 637                                              size_t tbslen))
 638 {
 639     pmeth->verify_init = verify_init;
 640     pmeth->verify = verify;
 641 }
 642
 643 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
 644                                       int (*verify_recover_init) (EVP_PKEY_CTX
 645                                                                   *ctx),
 646                                       int (*verify_recover) (EVP_PKEY_CTX
 647                                                              *ctx,
 648                                                              unsigned char
 649                                                              *sig,
 650                                                              size_t *siglen,
 651                                                              const unsigned
 652                                                              char *tbs,
 653                                                              size_t tbslen))
 654 {
 655     pmeth->verify_recover_init = verify_recover_init;
 656     pmeth->verify_recover = verify_recover;
 657 }
 658
 659 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
 660                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
 661                                                     EVP_MD_CTX *mctx),
 662                                int (*signctx) (EVP_PKEY_CTX *ctx,
 663                                                unsigned char *sig,
 664                                                size_t *siglen,
 665                                                EVP_MD_CTX *mctx))
 666 {
 667     pmeth->signctx_init = signctx_init;
 668     pmeth->signctx = signctx;
 669 }
 670
 671 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
 672                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
 673                                                         EVP_MD_CTX *mctx),
 674                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
 675                                                    const unsigned char *sig,
 676                                                    int siglen,
 677                                                    EVP_MD_CTX *mctx))
 678 {
 679     pmeth->verifyctx_init = verifyctx_init;
 680     pmeth->verifyctx = verifyctx;
 681 }
 682
 683 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
 684                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
 685                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
 686                                                  unsigned char *out,
 687                                                  size_t *outlen,
 688                                                  const unsigned char *in,
 689                                                  size_t inlen))
 690 {
 691     pmeth->encrypt_init = encrypt_init;
 692     pmeth->encrypt = encryptfn;
 693 }
 694
 695 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
 696                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
 697                                int (*decrypt) (EVP_PKEY_CTX *ctx,
 698                                                unsigned char *out,
 699                                                size_t *outlen,
 700                                                const unsigned char *in,
 701                                                size_t inlen))
 702 {
 703     pmeth->decrypt_init = decrypt_init;
 704     pmeth->decrypt = decrypt;
 705 }
 706
 707 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
 708                               int (*derive_init) (EVP_PKEY_CTX *ctx),
 709                               int (*derive) (EVP_PKEY_CTX *ctx,
 710                                              unsigned char *key,
 711                                              size_t *keylen))
 712 {
 713     pmeth->derive_init = derive_init;
 714     pmeth->derive = derive;
 715 }
 716
 717 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
 718                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
 719                                          void *p2),
 720                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
 721                                              const char *type,
 722                                              const char *value))
 723 {
 724     pmeth->ctrl = ctrl;
 725     pmeth->ctrl_str = ctrl_str;
 726 }
 727
 728 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
 729                              int (*check) (EVP_PKEY *pkey))
 730 {
 731     pmeth->check = check;
 732 }
 733
 734 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
 735                                     int (*check) (EVP_PKEY *pkey))
 736 {
 737     pmeth->public_check = check;
 738 }
 739
 740 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
 741                                    int (*check) (EVP_PKEY *pkey))
 742 {
 743     pmeth->param_check = check;
 744 }
 745
 746 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
 747                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
 748                                                            EVP_MD_CTX *mctx))
 749 {
 750     pmeth->digest_custom = digest_custom;
 751 }
 752
 753 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
 754                             int (**pinit) (EVP_PKEY_CTX *ctx))
 755 {
 756     *pinit = pmeth->init;
 757 }
 758
 759 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
 760                             int (**pcopy) (EVP_PKEY_CTX *dst,
 761                                            const EVP_PKEY_CTX *src))
 762 {
 763     *pcopy = pmeth->copy;
 764 }
 765
 766 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
 767                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
 768 {
 769     *pcleanup = pmeth->cleanup;
 770 }
 771
 772 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
 773                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
 774                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
 775                                                    EVP_PKEY *pkey))
 776 {
 777     if (pparamgen_init)
 778         *pparamgen_init = pmeth->paramgen_init;
 779     if (pparamgen)
 780         *pparamgen = pmeth->paramgen;
 781 }
 782
 783 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
 784                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
 785                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
 786                                                EVP_PKEY *pkey))
 787 {
 788     if (pkeygen_init)
 789         *pkeygen_init = pmeth->keygen_init;
 790     if (pkeygen)
 791         *pkeygen = pmeth->keygen;
 792 }
 793
 794 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
 795                             int (**psign_init) (EVP_PKEY_CTX *ctx),
 796                             int (**psign) (EVP_PKEY_CTX *ctx,
 797                                            unsigned char *sig, size_t *siglen,
 798                                            const unsigned char *tbs,
 799                                            size_t tbslen))
 800 {
 801     if (psign_init)
 802         *psign_init = pmeth->sign_init;
 803     if (psign)
 804         *psign = pmeth->sign;
 805 }
 806
 807 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
 808                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
 809                               int (**pverify) (EVP_PKEY_CTX *ctx,
 810                                                const unsigned char *sig,
 811                                                size_t siglen,
 812                                                const unsigned char *tbs,
 813                                                size_t tbslen))
 814 {
 815     if (pverify_init)
 816         *pverify_init = pmeth->verify_init;
 817     if (pverify)
 818         *pverify = pmeth->verify;
 819 }
 820
 821 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
 822                                       int (**pverify_recover_init) (EVP_PKEY_CTX
 823                                                                     *ctx),
 824                                       int (**pverify_recover) (EVP_PKEY_CTX
 825                                                                *ctx,
 826                                                                unsigned char
 827                                                                *sig,
 828                                                                size_t *siglen,
 829                                                                const unsigned
 830                                                                char *tbs,
 831                                                                size_t tbslen))
 832 {
 833     if (pverify_recover_init)
 834         *pverify_recover_init = pmeth->verify_recover_init;
 835     if (pverify_recover)
 836         *pverify_recover = pmeth->verify_recover;
 837 }
 838
 839 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
 840                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
 841                                                       EVP_MD_CTX *mctx),
 842                                int (**psignctx) (EVP_PKEY_CTX *ctx,
 843                                                  unsigned char *sig,
 844                                                  size_t *siglen,
 845                                                  EVP_MD_CTX *mctx))
 846 {
 847     if (psignctx_init)
 848         *psignctx_init = pmeth->signctx_init;
 849     if (psignctx)
 850         *psignctx = pmeth->signctx;
 851 }
 852
 853 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
 854                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
 855                                                           EVP_MD_CTX *mctx),
 856                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
 857                                                      const unsigned char *sig,
 858                                                      int siglen,
 859                                                      EVP_MD_CTX *mctx))
 860 {
 861     if (pverifyctx_init)
 862         *pverifyctx_init = pmeth->verifyctx_init;
 863     if (pverifyctx)
 864         *pverifyctx = pmeth->verifyctx;
 865 }
 866
 867 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
 868                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
 869                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
 870                                                    unsigned char *out,
 871                                                    size_t *outlen,
 872                                                    const unsigned char *in,
 873                                                    size_t inlen))
 874 {
 875     if (pencrypt_init)
 876         *pencrypt_init = pmeth->encrypt_init;
 877     if (pencryptfn)
 878         *pencryptfn = pmeth->encrypt;
 879 }
 880
 881 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
 882                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
 883                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
 884                                                  unsigned char *out,
 885                                                  size_t *outlen,
 886                                                  const unsigned char *in,
 887                                                  size_t inlen))
 888 {
 889     if (pdecrypt_init)
 890         *pdecrypt_init = pmeth->decrypt_init;
 891     if (pdecrypt)
 892         *pdecrypt = pmeth->decrypt;
 893 }
 894
 895 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
 896                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
 897                               int (**pderive) (EVP_PKEY_CTX *ctx,
 898                                                unsigned char *key,
 899                                                size_t *keylen))
 900 {
 901     if (pderive_init)
 902         *pderive_init = pmeth->derive_init;
 903     if (pderive)
 904         *pderive = pmeth->derive;
 905 }
 906
 907 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
 908                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
 909                                            void *p2),
 910                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
 911                                                const char *type,
 912                                                const char *value))
 913 {
 914     if (pctrl)
 915         *pctrl = pmeth->ctrl;
 916     if (pctrl_str)
 917         *pctrl_str = pmeth->ctrl_str;
 918 }
 919
 920 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
 921                              int (**pcheck) (EVP_PKEY *pkey))
 922 {
 923     if (pcheck != NULL)
 924         *pcheck = pmeth->check;
 925 }
 926
 927 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
 928                                     int (**pcheck) (EVP_PKEY *pkey))
 929 {
 930     if (pcheck != NULL)
 931         *pcheck = pmeth->public_check;
 932 }
 933
 934 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
 935                                    int (**pcheck) (EVP_PKEY *pkey))
 936 {
 937     if (pcheck != NULL)
 938         *pcheck = pmeth->param_check;
 939 }
 940
 941 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
 942                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
 943                                                              EVP_MD_CTX *mctx))
 944 {
 945     if (pdigest_custom != NULL)
 946         *pdigest_custom = pmeth->digest_custom;
 947 }