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 #ifndef OPENSSL_NO_DH
 397 int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad)
 398 {
 399     OSSL_PARAM dh_pad_params[2];
 400
 401     /* TODO(3.0): Remove this eventually when no more legacy */
 402     if (ctx->exchprovctx == NULL)
 403         return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_DERIVE,
 404                                  EVP_PKEY_CTRL_DH_PAD, pad, NULL);
 405
 406     dh_pad_params[0] = OSSL_PARAM_construct_int(OSSL_EXCHANGE_PARAM_PAD, &pad);
 407     dh_pad_params[1] = OSSL_PARAM_construct_end();
 408
 409     return EVP_PKEY_CTX_set_params(ctx, dh_pad_params);
 410 }
 411 #endif
 412
 413 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
 414                                 int cmd, int p1, void *p2)
 415 {
 416     switch (cmd) {
 417 #ifndef OPENSSL_NO_DH
 418     case EVP_PKEY_CTRL_DH_PAD:
 419         return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
 420 #endif
 421     }
 422     return 0;
 423 }
 424
 425 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
 426                       int cmd, int p1, void *p2)
 427 {
 428     int ret;
 429
 430     if (ctx == NULL) {
 431         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 432         return -2;
 433     }
 434
 435     if (ctx->exchprovctx != NULL)
 436         return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
 437
 438     if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
 439         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 440         return -2;
 441     }
 442     if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
 443         return -1;
 444
 445     /* Skip the operation checks since this is called in a very early stage */
 446     if (ctx->pmeth->digest_custom != NULL)
 447         goto doit;
 448
 449     if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
 450         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
 451         return -1;
 452     }
 453
 454     if ((optype != -1) && !(ctx->operation & optype)) {
 455         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
 456         return -1;
 457     }
 458
 459  doit:
 460     ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
 461
 462     if (ret == -2)
 463         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 464
 465     return ret;
 466 }
 467
 468 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
 469                              int cmd, uint64_t value)
 470 {
 471     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
 472 }
 473
 474 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
 475                                     const char *value)
 476 {
 477 #ifndef OPENSSL_NO_DH
 478     if (strcmp(name, "dh_pad") == 0) {
 479         int pad;
 480
 481         pad = atoi(value);
 482         return EVP_PKEY_CTX_set_dh_pad(ctx, pad);
 483     }
 484 #endif
 485     return 0;
 486 }
 487
 488 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
 489                           const char *name, const char *value)
 490 {
 491     if (ctx == NULL) {
 492         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 493         return -2;
 494     }
 495
 496     if (ctx->exchprovctx != NULL)
 497         return legacy_ctrl_str_to_param(ctx, name, value);
 498
 499     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
 500         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 501         return -2;
 502     }
 503     if (strcmp(name, "digest") == 0)
 504         return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
 505                                value);
 506     return ctx->pmeth->ctrl_str(ctx, name, value);
 507 }
 508
 509 /* Utility functions to send a string of hex string to a ctrl */
 510
 511 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
 512 {
 513     size_t len;
 514
 515     len = strlen(str);
 516     if (len > INT_MAX)
 517         return -1;
 518     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
 519 }
 520
 521 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
 522 {
 523     unsigned char *bin;
 524     long binlen;
 525     int rv = -1;
 526
 527     bin = OPENSSL_hexstr2buf(hex, &binlen);
 528     if (bin == NULL)
 529         return 0;
 530     if (binlen <= INT_MAX)
 531         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
 532     OPENSSL_free(bin);
 533     return rv;
 534 }
 535
 536 /* Pass a message digest to a ctrl */
 537 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
 538 {
 539     const EVP_MD *m;
 540
 541     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
 542         EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
 543         return 0;
 544     }
 545     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
 546 }
 547
 548 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
 549 {
 550     return ctx->operation;
 551 }
 552
 553 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
 554 {
 555     ctx->keygen_info = dat;
 556     ctx->keygen_info_count = datlen;
 557 }
 558
 559 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
 560 {
 561     ctx->data = data;
 562 }
 563
 564 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
 565 {
 566     return ctx->data;
 567 }
 568
 569 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
 570 {
 571     return ctx->pkey;
 572 }
 573
 574 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
 575 {
 576     return ctx->peerkey;
 577 }
 578
 579 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
 580 {
 581     ctx->app_data = data;
 582 }
 583
 584 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
 585 {
 586     return ctx->app_data;
 587 }
 588
 589 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
 590                             int (*init) (EVP_PKEY_CTX *ctx))
 591 {
 592     pmeth->init = init;
 593 }
 594
 595 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
 596                             int (*copy) (EVP_PKEY_CTX *dst,
 597                                          const EVP_PKEY_CTX *src))
 598 {
 599     pmeth->copy = copy;
 600 }
 601
 602 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
 603                                void (*cleanup) (EVP_PKEY_CTX *ctx))
 604 {
 605     pmeth->cleanup = cleanup;
 606 }
 607
 608 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
 609                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
 610                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
 611                                                  EVP_PKEY *pkey))
 612 {
 613     pmeth->paramgen_init = paramgen_init;
 614     pmeth->paramgen = paramgen;
 615 }
 616
 617 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
 618                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
 619                               int (*keygen) (EVP_PKEY_CTX *ctx,
 620                                              EVP_PKEY *pkey))
 621 {
 622     pmeth->keygen_init = keygen_init;
 623     pmeth->keygen = keygen;
 624 }
 625
 626 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
 627                             int (*sign_init) (EVP_PKEY_CTX *ctx),
 628                             int (*sign) (EVP_PKEY_CTX *ctx,
 629                                          unsigned char *sig, size_t *siglen,
 630                                          const unsigned char *tbs,
 631                                          size_t tbslen))
 632 {
 633     pmeth->sign_init = sign_init;
 634     pmeth->sign = sign;
 635 }
 636
 637 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
 638                               int (*verify_init) (EVP_PKEY_CTX *ctx),
 639                               int (*verify) (EVP_PKEY_CTX *ctx,
 640                                              const unsigned char *sig,
 641                                              size_t siglen,
 642                                              const unsigned char *tbs,
 643                                              size_t tbslen))
 644 {
 645     pmeth->verify_init = verify_init;
 646     pmeth->verify = verify;
 647 }
 648
 649 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
 650                                       int (*verify_recover_init) (EVP_PKEY_CTX
 651                                                                   *ctx),
 652                                       int (*verify_recover) (EVP_PKEY_CTX
 653                                                              *ctx,
 654                                                              unsigned char
 655                                                              *sig,
 656                                                              size_t *siglen,
 657                                                              const unsigned
 658                                                              char *tbs,
 659                                                              size_t tbslen))
 660 {
 661     pmeth->verify_recover_init = verify_recover_init;
 662     pmeth->verify_recover = verify_recover;
 663 }
 664
 665 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
 666                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
 667                                                     EVP_MD_CTX *mctx),
 668                                int (*signctx) (EVP_PKEY_CTX *ctx,
 669                                                unsigned char *sig,
 670                                                size_t *siglen,
 671                                                EVP_MD_CTX *mctx))
 672 {
 673     pmeth->signctx_init = signctx_init;
 674     pmeth->signctx = signctx;
 675 }
 676
 677 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
 678                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
 679                                                         EVP_MD_CTX *mctx),
 680                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
 681                                                    const unsigned char *sig,
 682                                                    int siglen,
 683                                                    EVP_MD_CTX *mctx))
 684 {
 685     pmeth->verifyctx_init = verifyctx_init;
 686     pmeth->verifyctx = verifyctx;
 687 }
 688
 689 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
 690                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
 691                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
 692                                                  unsigned char *out,
 693                                                  size_t *outlen,
 694                                                  const unsigned char *in,
 695                                                  size_t inlen))
 696 {
 697     pmeth->encrypt_init = encrypt_init;
 698     pmeth->encrypt = encryptfn;
 699 }
 700
 701 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
 702                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
 703                                int (*decrypt) (EVP_PKEY_CTX *ctx,
 704                                                unsigned char *out,
 705                                                size_t *outlen,
 706                                                const unsigned char *in,
 707                                                size_t inlen))
 708 {
 709     pmeth->decrypt_init = decrypt_init;
 710     pmeth->decrypt = decrypt;
 711 }
 712
 713 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
 714                               int (*derive_init) (EVP_PKEY_CTX *ctx),
 715                               int (*derive) (EVP_PKEY_CTX *ctx,
 716                                              unsigned char *key,
 717                                              size_t *keylen))
 718 {
 719     pmeth->derive_init = derive_init;
 720     pmeth->derive = derive;
 721 }
 722
 723 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
 724                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
 725                                          void *p2),
 726                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
 727                                              const char *type,
 728                                              const char *value))
 729 {
 730     pmeth->ctrl = ctrl;
 731     pmeth->ctrl_str = ctrl_str;
 732 }
 733
 734 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
 735                              int (*check) (EVP_PKEY *pkey))
 736 {
 737     pmeth->check = check;
 738 }
 739
 740 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
 741                                     int (*check) (EVP_PKEY *pkey))
 742 {
 743     pmeth->public_check = check;
 744 }
 745
 746 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
 747                                    int (*check) (EVP_PKEY *pkey))
 748 {
 749     pmeth->param_check = check;
 750 }
 751
 752 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
 753                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
 754                                                            EVP_MD_CTX *mctx))
 755 {
 756     pmeth->digest_custom = digest_custom;
 757 }
 758
 759 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
 760                             int (**pinit) (EVP_PKEY_CTX *ctx))
 761 {
 762     *pinit = pmeth->init;
 763 }
 764
 765 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
 766                             int (**pcopy) (EVP_PKEY_CTX *dst,
 767                                            const EVP_PKEY_CTX *src))
 768 {
 769     *pcopy = pmeth->copy;
 770 }
 771
 772 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
 773                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
 774 {
 775     *pcleanup = pmeth->cleanup;
 776 }
 777
 778 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
 779                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
 780                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
 781                                                    EVP_PKEY *pkey))
 782 {
 783     if (pparamgen_init)
 784         *pparamgen_init = pmeth->paramgen_init;
 785     if (pparamgen)
 786         *pparamgen = pmeth->paramgen;
 787 }
 788
 789 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
 790                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
 791                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
 792                                                EVP_PKEY *pkey))
 793 {
 794     if (pkeygen_init)
 795         *pkeygen_init = pmeth->keygen_init;
 796     if (pkeygen)
 797         *pkeygen = pmeth->keygen;
 798 }
 799
 800 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
 801                             int (**psign_init) (EVP_PKEY_CTX *ctx),
 802                             int (**psign) (EVP_PKEY_CTX *ctx,
 803                                            unsigned char *sig, size_t *siglen,
 804                                            const unsigned char *tbs,
 805                                            size_t tbslen))
 806 {
 807     if (psign_init)
 808         *psign_init = pmeth->sign_init;
 809     if (psign)
 810         *psign = pmeth->sign;
 811 }
 812
 813 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
 814                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
 815                               int (**pverify) (EVP_PKEY_CTX *ctx,
 816                                                const unsigned char *sig,
 817                                                size_t siglen,
 818                                                const unsigned char *tbs,
 819                                                size_t tbslen))
 820 {
 821     if (pverify_init)
 822         *pverify_init = pmeth->verify_init;
 823     if (pverify)
 824         *pverify = pmeth->verify;
 825 }
 826
 827 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
 828                                       int (**pverify_recover_init) (EVP_PKEY_CTX
 829                                                                     *ctx),
 830                                       int (**pverify_recover) (EVP_PKEY_CTX
 831                                                                *ctx,
 832                                                                unsigned char
 833                                                                *sig,
 834                                                                size_t *siglen,
 835                                                                const unsigned
 836                                                                char *tbs,
 837                                                                size_t tbslen))
 838 {
 839     if (pverify_recover_init)
 840         *pverify_recover_init = pmeth->verify_recover_init;
 841     if (pverify_recover)
 842         *pverify_recover = pmeth->verify_recover;
 843 }
 844
 845 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
 846                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
 847                                                       EVP_MD_CTX *mctx),
 848                                int (**psignctx) (EVP_PKEY_CTX *ctx,
 849                                                  unsigned char *sig,
 850                                                  size_t *siglen,
 851                                                  EVP_MD_CTX *mctx))
 852 {
 853     if (psignctx_init)
 854         *psignctx_init = pmeth->signctx_init;
 855     if (psignctx)
 856         *psignctx = pmeth->signctx;
 857 }
 858
 859 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
 860                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
 861                                                           EVP_MD_CTX *mctx),
 862                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
 863                                                      const unsigned char *sig,
 864                                                      int siglen,
 865                                                      EVP_MD_CTX *mctx))
 866 {
 867     if (pverifyctx_init)
 868         *pverifyctx_init = pmeth->verifyctx_init;
 869     if (pverifyctx)
 870         *pverifyctx = pmeth->verifyctx;
 871 }
 872
 873 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
 874                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
 875                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
 876                                                    unsigned char *out,
 877                                                    size_t *outlen,
 878                                                    const unsigned char *in,
 879                                                    size_t inlen))
 880 {
 881     if (pencrypt_init)
 882         *pencrypt_init = pmeth->encrypt_init;
 883     if (pencryptfn)
 884         *pencryptfn = pmeth->encrypt;
 885 }
 886
 887 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
 888                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
 889                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
 890                                                  unsigned char *out,
 891                                                  size_t *outlen,
 892                                                  const unsigned char *in,
 893                                                  size_t inlen))
 894 {
 895     if (pdecrypt_init)
 896         *pdecrypt_init = pmeth->decrypt_init;
 897     if (pdecrypt)
 898         *pdecrypt = pmeth->decrypt;
 899 }
 900
 901 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
 902                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
 903                               int (**pderive) (EVP_PKEY_CTX *ctx,
 904                                                unsigned char *key,
 905                                                size_t *keylen))
 906 {
 907     if (pderive_init)
 908         *pderive_init = pmeth->derive_init;
 909     if (pderive)
 910         *pderive = pmeth->derive;
 911 }
 912
 913 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
 914                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
 915                                            void *p2),
 916                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
 917                                                const char *type,
 918                                                const char *value))
 919 {
 920     if (pctrl)
 921         *pctrl = pmeth->ctrl;
 922     if (pctrl_str)
 923         *pctrl_str = pmeth->ctrl_str;
 924 }
 925
 926 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
 927                              int (**pcheck) (EVP_PKEY *pkey))
 928 {
 929     if (pcheck != NULL)
 930         *pcheck = pmeth->check;
 931 }
 932
 933 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
 934                                     int (**pcheck) (EVP_PKEY *pkey))
 935 {
 936     if (pcheck != NULL)
 937         *pcheck = pmeth->public_check;
 938 }
 939
 940 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
 941                                    int (**pcheck) (EVP_PKEY *pkey))
 942 {
 943     if (pcheck != NULL)
 944         *pcheck = pmeth->param_check;
 945 }
 946
 947 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
 948                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
 949                                                              EVP_MD_CTX *mctx))
 950 {
 951     if (pdigest_custom != NULL)
 952         *pdigest_custom = pmeth->digest_custom;
 953 }