crypto/evp/pmeth_lib.c

   1
   2 /*
   3  * Copyright 2006-2018 The OpenSSL Project Authors. All Rights Reserved.
   4  *
   5  * Licensed under the Apache License 2.0 (the "License").  You may not use
   6  * this file except in compliance with the License.  You can obtain a copy
   7  * in the file LICENSE in the source distribution or at
   8  * https://www.openssl.org/source/license.html
   9  */
  10
  11 #include <stdio.h>
  12 #include <stdlib.h>
  13 #include <openssl/engine.h>
  14 #include <openssl/evp.h>
  15 #include <openssl/x509v3.h>
  16 #include <openssl/core_names.h>
  17 #include <openssl/dh.h>
  18 #include "internal/cryptlib.h"
  19 #include "internal/asn1_int.h"
  20 #include "internal/evp_int.h"
  21 #include "internal/numbers.h"
  22 #include "evp_locl.h"
  23
  24 typedef int sk_cmp_fn_type(const char *const *a, const char *const *b);
  25
  26 static STACK_OF(EVP_PKEY_METHOD) *app_pkey_methods = NULL;
  27
  28 /* This array needs to be in order of NIDs */
  29 static const EVP_PKEY_METHOD *standard_methods[] = {
  30 #ifndef OPENSSL_NO_RSA
  31     &rsa_pkey_meth,
  32 #endif
  33 #ifndef OPENSSL_NO_DH
  34     &dh_pkey_meth,
  35 #endif
  36 #ifndef OPENSSL_NO_DSA
  37     &dsa_pkey_meth,
  38 #endif
  39 #ifndef OPENSSL_NO_EC
  40     &ec_pkey_meth,
  41 #endif
  42     &hmac_pkey_meth,
  43 #ifndef OPENSSL_NO_CMAC
  44     &cmac_pkey_meth,
  45 #endif
  46 #ifndef OPENSSL_NO_RSA
  47     &rsa_pss_pkey_meth,
  48 #endif
  49 #ifndef OPENSSL_NO_DH
  50     &dhx_pkey_meth,
  51 #endif
  52 #ifndef OPENSSL_NO_SCRYPT
  53     &scrypt_pkey_meth,
  54 #endif
  55     &tls1_prf_pkey_meth,
  56 #ifndef OPENSSL_NO_EC
  57     &ecx25519_pkey_meth,
  58     &ecx448_pkey_meth,
  59 #endif
  60     &hkdf_pkey_meth,
  61 #ifndef OPENSSL_NO_POLY1305
  62     &poly1305_pkey_meth,
  63 #endif
  64 #ifndef OPENSSL_NO_SIPHASH
  65     &siphash_pkey_meth,
  66 #endif
  67 #ifndef OPENSSL_NO_EC
  68     &ed25519_pkey_meth,
  69     &ed448_pkey_meth,
  70 #endif
  71 #ifndef OPENSSL_NO_SM2
  72     &sm2_pkey_meth,
  73 #endif
  74 };
  75
  76 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
  77                            pmeth);
  78
  79 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  80                      const EVP_PKEY_METHOD *const *b)
  81 {
  82     return ((*a)->pkey_id - (*b)->pkey_id);
  83 }
  84
  85 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
  86                              pmeth);
  87
  88 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
  89 {
  90     EVP_PKEY_METHOD tmp;
  91     const EVP_PKEY_METHOD *t = &tmp, **ret;
  92     tmp.pkey_id = type;
  93     if (app_pkey_methods) {
  94         int idx;
  95         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
  96         if (idx >= 0)
  97             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
  98     }
  99     ret = OBJ_bsearch_pmeth(&t, standard_methods,
 100                             sizeof(standard_methods) /
 101                             sizeof(EVP_PKEY_METHOD *));
 102     if (!ret || !*ret)
 103         return NULL;
 104     return *ret;
 105 }
 106
 107 static EVP_PKEY_CTX *int_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id)
 108 {
 109     EVP_PKEY_CTX *ret;
 110     const EVP_PKEY_METHOD *pmeth = NULL;
 111
 112     /*
 113      * When using providers, the context is bound to the algo implementation
 114      * later.
 115      */
 116     if (pkey == NULL && e == NULL && id == -1)
 117         goto common;
 118
 119     /* TODO(3.0) Legacy code should be removed when all is provider based */
 120     /* BEGIN legacy */
 121     if (id == -1) {
 122         if (pkey == NULL)
 123             return 0;
 124         id = pkey->type;
 125     }
 126 #ifndef OPENSSL_NO_ENGINE
 127     if (e == NULL && pkey != NULL)
 128         e = pkey->pmeth_engine != NULL ? pkey->pmeth_engine : pkey->engine;
 129     /* Try to find an ENGINE which implements this method */
 130     if (e) {
 131         if (!ENGINE_init(e)) {
 132             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
 133             return NULL;
 134         }
 135     } else {
 136         e = ENGINE_get_pkey_meth_engine(id);
 137     }
 138
 139     /*
 140      * If an ENGINE handled this method look it up. Otherwise use internal
 141      * tables.
 142      */
 143     if (e)
 144         pmeth = ENGINE_get_pkey_meth(e, id);
 145     else
 146 #endif
 147         pmeth = EVP_PKEY_meth_find(id);
 148
 149     if (pmeth == NULL) {
 150 #ifndef OPENSSL_NO_ENGINE
 151         ENGINE_finish(e);
 152 #endif
 153         EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
 154         return NULL;
 155     }
 156     /* END legacy */
 157
 158  common:
 159     ret = OPENSSL_zalloc(sizeof(*ret));
 160     if (ret == NULL) {
 161 #ifndef OPENSSL_NO_ENGINE
 162         ENGINE_finish(e);
 163 #endif
 164         EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
 165         return NULL;
 166     }
 167     ret->engine = e;
 168     ret->pmeth = pmeth;
 169     ret->operation = EVP_PKEY_OP_UNDEFINED;
 170     ret->pkey = pkey;
 171     if (pkey != NULL)
 172         EVP_PKEY_up_ref(pkey);
 173
 174     if (pmeth != NULL && pmeth->init != NULL) {
 175         if (pmeth->init(ret) <= 0) {
 176             ret->pmeth = NULL;
 177             EVP_PKEY_CTX_free(ret);
 178             return NULL;
 179         }
 180     }
 181
 182     return ret;
 183 }
 184
 185 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 186 {
 187     EVP_PKEY_METHOD *pmeth;
 188
 189     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 190     if (pmeth == NULL) {
 191         EVPerr(EVP_F_EVP_PKEY_METH_NEW, ERR_R_MALLOC_FAILURE);
 192         return NULL;
 193     }
 194
 195     pmeth->pkey_id = id;
 196     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 197     return pmeth;
 198 }
 199
 200 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 201                              const EVP_PKEY_METHOD *meth)
 202 {
 203     if (ppkey_id)
 204         *ppkey_id = meth->pkey_id;
 205     if (pflags)
 206         *pflags = meth->flags;
 207 }
 208
 209 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 210 {
 211
 212     dst->init = src->init;
 213     dst->copy = src->copy;
 214     dst->cleanup = src->cleanup;
 215
 216     dst->paramgen_init = src->paramgen_init;
 217     dst->paramgen = src->paramgen;
 218
 219     dst->keygen_init = src->keygen_init;
 220     dst->keygen = src->keygen;
 221
 222     dst->sign_init = src->sign_init;
 223     dst->sign = src->sign;
 224
 225     dst->verify_init = src->verify_init;
 226     dst->verify = src->verify;
 227
 228     dst->verify_recover_init = src->verify_recover_init;
 229     dst->verify_recover = src->verify_recover;
 230
 231     dst->signctx_init = src->signctx_init;
 232     dst->signctx = src->signctx;
 233
 234     dst->verifyctx_init = src->verifyctx_init;
 235     dst->verifyctx = src->verifyctx;
 236
 237     dst->encrypt_init = src->encrypt_init;
 238     dst->encrypt = src->encrypt;
 239
 240     dst->decrypt_init = src->decrypt_init;
 241     dst->decrypt = src->decrypt;
 242
 243     dst->derive_init = src->derive_init;
 244     dst->derive = src->derive;
 245
 246     dst->ctrl = src->ctrl;
 247     dst->ctrl_str = src->ctrl_str;
 248
 249     dst->check = src->check;
 250 }
 251
 252 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 253 {
 254     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 255         OPENSSL_free(pmeth);
 256 }
 257
 258 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 259 {
 260     return int_ctx_new(pkey, e, -1);
 261 }
 262
 263 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 264 {
 265     return int_ctx_new(NULL, e, id);
 266 }
 267
 268 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(const EVP_PKEY_CTX *pctx)
 269 {
 270     EVP_PKEY_CTX *rctx;
 271
 272     if (((pctx->pmeth == NULL) || (pctx->pmeth->copy == NULL))
 273             && pctx->exchprovctx == NULL)
 274         return NULL;
 275 #ifndef OPENSSL_NO_ENGINE
 276     /* Make sure it's safe to copy a pkey context using an ENGINE */
 277     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 278         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
 279         return 0;
 280     }
 281 #endif
 282     rctx = OPENSSL_zalloc(sizeof(*rctx));
 283     if (rctx == NULL) {
 284         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_MALLOC_FAILURE);
 285         return NULL;
 286     }
 287
 288     if (pctx->pkey != NULL)
 289         EVP_PKEY_up_ref(pctx->pkey);
 290     rctx->pkey = pctx->pkey;
 291     rctx->operation = pctx->operation;
 292
 293     if (pctx->exchprovctx != NULL) {
 294         if (!ossl_assert(pctx->exchange != NULL))
 295             return NULL;
 296         rctx->exchange = pctx->exchange;
 297         if (!EVP_KEYEXCH_up_ref(rctx->exchange)) {
 298             OPENSSL_free(rctx);
 299             return NULL;
 300         }
 301         rctx->exchprovctx = pctx->exchange->dupctx(pctx->exchprovctx);
 302         if (rctx->exchprovctx == NULL) {
 303             EVP_KEYEXCH_free(rctx->exchange);
 304             OPENSSL_free(rctx);
 305             return NULL;
 306         }
 307         return rctx;
 308     }
 309
 310     rctx->pmeth = pctx->pmeth;
 311 #ifndef OPENSSL_NO_ENGINE
 312     rctx->engine = pctx->engine;
 313 #endif
 314
 315     if (pctx->peerkey)
 316         EVP_PKEY_up_ref(pctx->peerkey);
 317     rctx->peerkey = pctx->peerkey;
 318
 319     if (pctx->pmeth->copy(rctx, pctx) > 0)
 320         return rctx;
 321
 322     rctx->pmeth = NULL;
 323     EVP_PKEY_CTX_free(rctx);
 324     return NULL;
 325
 326 }
 327
 328 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 329 {
 330     if (app_pkey_methods == NULL) {
 331         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 332         if (app_pkey_methods == NULL){
 333             EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 334             return 0;
 335         }
 336     }
 337     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth)) {
 338         EVPerr(EVP_F_EVP_PKEY_METH_ADD0, ERR_R_MALLOC_FAILURE);
 339         return 0;
 340     }
 341     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 342     return 1;
 343 }
 344
 345 void evp_app_cleanup_int(void)
 346 {
 347     if (app_pkey_methods != NULL)
 348         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 349 }
 350
 351 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 352 {
 353     const EVP_PKEY_METHOD *ret;
 354
 355     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 356
 357     return ret == NULL ? 0 : 1;
 358 }
 359
 360 size_t EVP_PKEY_meth_get_count(void)
 361 {
 362     size_t rv = OSSL_NELEM(standard_methods);
 363
 364     if (app_pkey_methods)
 365         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 366     return rv;
 367 }
 368
 369 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 370 {
 371     if (idx < OSSL_NELEM(standard_methods))
 372         return standard_methods[idx];
 373     if (app_pkey_methods == NULL)
 374         return NULL;
 375     idx -= OSSL_NELEM(standard_methods);
 376     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 377         return NULL;
 378     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 379 }
 380
 381 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 382 {
 383     if (ctx == NULL)
 384         return;
 385     if (ctx->pmeth && ctx->pmeth->cleanup)
 386         ctx->pmeth->cleanup(ctx);
 387
 388     if (ctx->exchprovctx != NULL && ctx->exchange != NULL)
 389         ctx->exchange->freectx(ctx->exchprovctx);
 390
 391     EVP_KEYEXCH_free(ctx->exchange);
 392
 393     EVP_PKEY_free(ctx->pkey);
 394     EVP_PKEY_free(ctx->peerkey);
 395 #ifndef OPENSSL_NO_ENGINE
 396     ENGINE_finish(ctx->engine);
 397 #endif
 398     OPENSSL_free(ctx);
 399 }
 400
 401 int EVP_PKEY_CTX_set_params(EVP_PKEY_CTX *ctx, OSSL_PARAM *params)
 402 {
 403     if (ctx->exchprovctx != NULL && ctx->exchange != NULL)
 404         return ctx->exchange->set_params(ctx->exchprovctx, params);
 405     return 0;
 406 }
 407
 408 #ifndef OPENSSL_NO_DH
 409 int EVP_PKEY_CTX_set_dh_pad(EVP_PKEY_CTX *ctx, int pad)
 410 {
 411     OSSL_PARAM dh_pad_params[2];
 412     unsigned int upad = pad;
 413
 414     /* TODO(3.0): Remove this eventually when no more legacy */
 415     if (ctx->exchprovctx == NULL)
 416         return EVP_PKEY_CTX_ctrl(ctx, EVP_PKEY_DH, EVP_PKEY_OP_DERIVE,
 417                                  EVP_PKEY_CTRL_DH_PAD, pad, NULL);
 418
 419     dh_pad_params[0] = OSSL_PARAM_construct_uint(OSSL_EXCHANGE_PARAM_PAD, &upad);
 420     dh_pad_params[1] = OSSL_PARAM_construct_end();
 421
 422     return EVP_PKEY_CTX_set_params(ctx, dh_pad_params);
 423 }
 424 #endif
 425
 426 static int legacy_ctrl_to_param(EVP_PKEY_CTX *ctx, int keytype, int optype,
 427                                 int cmd, int p1, void *p2)
 428 {
 429     switch (cmd) {
 430 #ifndef OPENSSL_NO_DH
 431     case EVP_PKEY_CTRL_DH_PAD:
 432         return EVP_PKEY_CTX_set_dh_pad(ctx, p1);
 433 #endif
 434     }
 435     return 0;
 436 }
 437
 438 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
 439                       int cmd, int p1, void *p2)
 440 {
 441     int ret;
 442
 443     if (ctx == NULL) {
 444         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 445         return -2;
 446     }
 447
 448     if (ctx->exchprovctx != NULL)
 449         return legacy_ctrl_to_param(ctx, keytype, optype, cmd, p1, p2);
 450
 451     if (ctx->pmeth == NULL || ctx->pmeth->ctrl == NULL) {
 452         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 453         return -2;
 454     }
 455     if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
 456         return -1;
 457
 458     /* Skip the operation checks since this is called in a very early stage */
 459     if (ctx->pmeth->digest_custom != NULL)
 460         goto doit;
 461
 462     if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
 463         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
 464         return -1;
 465     }
 466
 467     if ((optype != -1) && !(ctx->operation & optype)) {
 468         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
 469         return -1;
 470     }
 471
 472  doit:
 473     ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
 474
 475     if (ret == -2)
 476         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 477
 478     return ret;
 479 }
 480
 481 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
 482                              int cmd, uint64_t value)
 483 {
 484     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
 485 }
 486
 487 static int legacy_ctrl_str_to_param(EVP_PKEY_CTX *ctx, const char *name,
 488                                     const char *value)
 489 {
 490 #ifndef OPENSSL_NO_DH
 491     if (strcmp(name, "dh_pad") == 0) {
 492         int pad;
 493
 494         pad = atoi(value);
 495         return EVP_PKEY_CTX_set_dh_pad(ctx, pad);
 496     }
 497 #endif
 498     return 0;
 499 }
 500
 501 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
 502                           const char *name, const char *value)
 503 {
 504     if (ctx == NULL) {
 505         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 506         return -2;
 507     }
 508
 509     if (ctx->exchprovctx != NULL)
 510         return legacy_ctrl_str_to_param(ctx, name, value);
 511
 512     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
 513         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 514         return -2;
 515     }
 516     if (strcmp(name, "digest") == 0)
 517         return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
 518                                value);
 519     return ctx->pmeth->ctrl_str(ctx, name, value);
 520 }
 521
 522 /* Utility functions to send a string of hex string to a ctrl */
 523
 524 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
 525 {
 526     size_t len;
 527
 528     len = strlen(str);
 529     if (len > INT_MAX)
 530         return -1;
 531     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
 532 }
 533
 534 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
 535 {
 536     unsigned char *bin;
 537     long binlen;
 538     int rv = -1;
 539
 540     bin = OPENSSL_hexstr2buf(hex, &binlen);
 541     if (bin == NULL)
 542         return 0;
 543     if (binlen <= INT_MAX)
 544         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
 545     OPENSSL_free(bin);
 546     return rv;
 547 }
 548
 549 /* Pass a message digest to a ctrl */
 550 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
 551 {
 552     const EVP_MD *m;
 553
 554     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
 555         EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
 556         return 0;
 557     }
 558     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
 559 }
 560
 561 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
 562 {
 563     return ctx->operation;
 564 }
 565
 566 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
 567 {
 568     ctx->keygen_info = dat;
 569     ctx->keygen_info_count = datlen;
 570 }
 571
 572 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
 573 {
 574     ctx->data = data;
 575 }
 576
 577 void *EVP_PKEY_CTX_get_data(const EVP_PKEY_CTX *ctx)
 578 {
 579     return ctx->data;
 580 }
 581
 582 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
 583 {
 584     return ctx->pkey;
 585 }
 586
 587 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
 588 {
 589     return ctx->peerkey;
 590 }
 591
 592 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
 593 {
 594     ctx->app_data = data;
 595 }
 596
 597 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
 598 {
 599     return ctx->app_data;
 600 }
 601
 602 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
 603                             int (*init) (EVP_PKEY_CTX *ctx))
 604 {
 605     pmeth->init = init;
 606 }
 607
 608 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
 609                             int (*copy) (EVP_PKEY_CTX *dst,
 610                                          const EVP_PKEY_CTX *src))
 611 {
 612     pmeth->copy = copy;
 613 }
 614
 615 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
 616                                void (*cleanup) (EVP_PKEY_CTX *ctx))
 617 {
 618     pmeth->cleanup = cleanup;
 619 }
 620
 621 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
 622                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
 623                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
 624                                                  EVP_PKEY *pkey))
 625 {
 626     pmeth->paramgen_init = paramgen_init;
 627     pmeth->paramgen = paramgen;
 628 }
 629
 630 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
 631                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
 632                               int (*keygen) (EVP_PKEY_CTX *ctx,
 633                                              EVP_PKEY *pkey))
 634 {
 635     pmeth->keygen_init = keygen_init;
 636     pmeth->keygen = keygen;
 637 }
 638
 639 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
 640                             int (*sign_init) (EVP_PKEY_CTX *ctx),
 641                             int (*sign) (EVP_PKEY_CTX *ctx,
 642                                          unsigned char *sig, size_t *siglen,
 643                                          const unsigned char *tbs,
 644                                          size_t tbslen))
 645 {
 646     pmeth->sign_init = sign_init;
 647     pmeth->sign = sign;
 648 }
 649
 650 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
 651                               int (*verify_init) (EVP_PKEY_CTX *ctx),
 652                               int (*verify) (EVP_PKEY_CTX *ctx,
 653                                              const unsigned char *sig,
 654                                              size_t siglen,
 655                                              const unsigned char *tbs,
 656                                              size_t tbslen))
 657 {
 658     pmeth->verify_init = verify_init;
 659     pmeth->verify = verify;
 660 }
 661
 662 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
 663                                       int (*verify_recover_init) (EVP_PKEY_CTX
 664                                                                   *ctx),
 665                                       int (*verify_recover) (EVP_PKEY_CTX
 666                                                              *ctx,
 667                                                              unsigned char
 668                                                              *sig,
 669                                                              size_t *siglen,
 670                                                              const unsigned
 671                                                              char *tbs,
 672                                                              size_t tbslen))
 673 {
 674     pmeth->verify_recover_init = verify_recover_init;
 675     pmeth->verify_recover = verify_recover;
 676 }
 677
 678 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
 679                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
 680                                                     EVP_MD_CTX *mctx),
 681                                int (*signctx) (EVP_PKEY_CTX *ctx,
 682                                                unsigned char *sig,
 683                                                size_t *siglen,
 684                                                EVP_MD_CTX *mctx))
 685 {
 686     pmeth->signctx_init = signctx_init;
 687     pmeth->signctx = signctx;
 688 }
 689
 690 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
 691                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
 692                                                         EVP_MD_CTX *mctx),
 693                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
 694                                                    const unsigned char *sig,
 695                                                    int siglen,
 696                                                    EVP_MD_CTX *mctx))
 697 {
 698     pmeth->verifyctx_init = verifyctx_init;
 699     pmeth->verifyctx = verifyctx;
 700 }
 701
 702 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
 703                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
 704                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
 705                                                  unsigned char *out,
 706                                                  size_t *outlen,
 707                                                  const unsigned char *in,
 708                                                  size_t inlen))
 709 {
 710     pmeth->encrypt_init = encrypt_init;
 711     pmeth->encrypt = encryptfn;
 712 }
 713
 714 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
 715                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
 716                                int (*decrypt) (EVP_PKEY_CTX *ctx,
 717                                                unsigned char *out,
 718                                                size_t *outlen,
 719                                                const unsigned char *in,
 720                                                size_t inlen))
 721 {
 722     pmeth->decrypt_init = decrypt_init;
 723     pmeth->decrypt = decrypt;
 724 }
 725
 726 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
 727                               int (*derive_init) (EVP_PKEY_CTX *ctx),
 728                               int (*derive) (EVP_PKEY_CTX *ctx,
 729                                              unsigned char *key,
 730                                              size_t *keylen))
 731 {
 732     pmeth->derive_init = derive_init;
 733     pmeth->derive = derive;
 734 }
 735
 736 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
 737                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
 738                                          void *p2),
 739                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
 740                                              const char *type,
 741                                              const char *value))
 742 {
 743     pmeth->ctrl = ctrl;
 744     pmeth->ctrl_str = ctrl_str;
 745 }
 746
 747 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
 748                              int (*check) (EVP_PKEY *pkey))
 749 {
 750     pmeth->check = check;
 751 }
 752
 753 void EVP_PKEY_meth_set_public_check(EVP_PKEY_METHOD *pmeth,
 754                                     int (*check) (EVP_PKEY *pkey))
 755 {
 756     pmeth->public_check = check;
 757 }
 758
 759 void EVP_PKEY_meth_set_param_check(EVP_PKEY_METHOD *pmeth,
 760                                    int (*check) (EVP_PKEY *pkey))
 761 {
 762     pmeth->param_check = check;
 763 }
 764
 765 void EVP_PKEY_meth_set_digest_custom(EVP_PKEY_METHOD *pmeth,
 766                                      int (*digest_custom) (EVP_PKEY_CTX *ctx,
 767                                                            EVP_MD_CTX *mctx))
 768 {
 769     pmeth->digest_custom = digest_custom;
 770 }
 771
 772 void EVP_PKEY_meth_get_init(const EVP_PKEY_METHOD *pmeth,
 773                             int (**pinit) (EVP_PKEY_CTX *ctx))
 774 {
 775     *pinit = pmeth->init;
 776 }
 777
 778 void EVP_PKEY_meth_get_copy(const EVP_PKEY_METHOD *pmeth,
 779                             int (**pcopy) (EVP_PKEY_CTX *dst,
 780                                            const EVP_PKEY_CTX *src))
 781 {
 782     *pcopy = pmeth->copy;
 783 }
 784
 785 void EVP_PKEY_meth_get_cleanup(const EVP_PKEY_METHOD *pmeth,
 786                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
 787 {
 788     *pcleanup = pmeth->cleanup;
 789 }
 790
 791 void EVP_PKEY_meth_get_paramgen(const EVP_PKEY_METHOD *pmeth,
 792                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
 793                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
 794                                                    EVP_PKEY *pkey))
 795 {
 796     if (pparamgen_init)
 797         *pparamgen_init = pmeth->paramgen_init;
 798     if (pparamgen)
 799         *pparamgen = pmeth->paramgen;
 800 }
 801
 802 void EVP_PKEY_meth_get_keygen(const EVP_PKEY_METHOD *pmeth,
 803                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
 804                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
 805                                                EVP_PKEY *pkey))
 806 {
 807     if (pkeygen_init)
 808         *pkeygen_init = pmeth->keygen_init;
 809     if (pkeygen)
 810         *pkeygen = pmeth->keygen;
 811 }
 812
 813 void EVP_PKEY_meth_get_sign(const EVP_PKEY_METHOD *pmeth,
 814                             int (**psign_init) (EVP_PKEY_CTX *ctx),
 815                             int (**psign) (EVP_PKEY_CTX *ctx,
 816                                            unsigned char *sig, size_t *siglen,
 817                                            const unsigned char *tbs,
 818                                            size_t tbslen))
 819 {
 820     if (psign_init)
 821         *psign_init = pmeth->sign_init;
 822     if (psign)
 823         *psign = pmeth->sign;
 824 }
 825
 826 void EVP_PKEY_meth_get_verify(const EVP_PKEY_METHOD *pmeth,
 827                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
 828                               int (**pverify) (EVP_PKEY_CTX *ctx,
 829                                                const unsigned char *sig,
 830                                                size_t siglen,
 831                                                const unsigned char *tbs,
 832                                                size_t tbslen))
 833 {
 834     if (pverify_init)
 835         *pverify_init = pmeth->verify_init;
 836     if (pverify)
 837         *pverify = pmeth->verify;
 838 }
 839
 840 void EVP_PKEY_meth_get_verify_recover(const EVP_PKEY_METHOD *pmeth,
 841                                       int (**pverify_recover_init) (EVP_PKEY_CTX
 842                                                                     *ctx),
 843                                       int (**pverify_recover) (EVP_PKEY_CTX
 844                                                                *ctx,
 845                                                                unsigned char
 846                                                                *sig,
 847                                                                size_t *siglen,
 848                                                                const unsigned
 849                                                                char *tbs,
 850                                                                size_t tbslen))
 851 {
 852     if (pverify_recover_init)
 853         *pverify_recover_init = pmeth->verify_recover_init;
 854     if (pverify_recover)
 855         *pverify_recover = pmeth->verify_recover;
 856 }
 857
 858 void EVP_PKEY_meth_get_signctx(const EVP_PKEY_METHOD *pmeth,
 859                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
 860                                                       EVP_MD_CTX *mctx),
 861                                int (**psignctx) (EVP_PKEY_CTX *ctx,
 862                                                  unsigned char *sig,
 863                                                  size_t *siglen,
 864                                                  EVP_MD_CTX *mctx))
 865 {
 866     if (psignctx_init)
 867         *psignctx_init = pmeth->signctx_init;
 868     if (psignctx)
 869         *psignctx = pmeth->signctx;
 870 }
 871
 872 void EVP_PKEY_meth_get_verifyctx(const EVP_PKEY_METHOD *pmeth,
 873                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
 874                                                           EVP_MD_CTX *mctx),
 875                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
 876                                                      const unsigned char *sig,
 877                                                      int siglen,
 878                                                      EVP_MD_CTX *mctx))
 879 {
 880     if (pverifyctx_init)
 881         *pverifyctx_init = pmeth->verifyctx_init;
 882     if (pverifyctx)
 883         *pverifyctx = pmeth->verifyctx;
 884 }
 885
 886 void EVP_PKEY_meth_get_encrypt(const EVP_PKEY_METHOD *pmeth,
 887                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
 888                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
 889                                                    unsigned char *out,
 890                                                    size_t *outlen,
 891                                                    const unsigned char *in,
 892                                                    size_t inlen))
 893 {
 894     if (pencrypt_init)
 895         *pencrypt_init = pmeth->encrypt_init;
 896     if (pencryptfn)
 897         *pencryptfn = pmeth->encrypt;
 898 }
 899
 900 void EVP_PKEY_meth_get_decrypt(const EVP_PKEY_METHOD *pmeth,
 901                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
 902                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
 903                                                  unsigned char *out,
 904                                                  size_t *outlen,
 905                                                  const unsigned char *in,
 906                                                  size_t inlen))
 907 {
 908     if (pdecrypt_init)
 909         *pdecrypt_init = pmeth->decrypt_init;
 910     if (pdecrypt)
 911         *pdecrypt = pmeth->decrypt;
 912 }
 913
 914 void EVP_PKEY_meth_get_derive(const EVP_PKEY_METHOD *pmeth,
 915                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
 916                               int (**pderive) (EVP_PKEY_CTX *ctx,
 917                                                unsigned char *key,
 918                                                size_t *keylen))
 919 {
 920     if (pderive_init)
 921         *pderive_init = pmeth->derive_init;
 922     if (pderive)
 923         *pderive = pmeth->derive;
 924 }
 925
 926 void EVP_PKEY_meth_get_ctrl(const EVP_PKEY_METHOD *pmeth,
 927                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
 928                                            void *p2),
 929                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
 930                                                const char *type,
 931                                                const char *value))
 932 {
 933     if (pctrl)
 934         *pctrl = pmeth->ctrl;
 935     if (pctrl_str)
 936         *pctrl_str = pmeth->ctrl_str;
 937 }
 938
 939 void EVP_PKEY_meth_get_check(const EVP_PKEY_METHOD *pmeth,
 940                              int (**pcheck) (EVP_PKEY *pkey))
 941 {
 942     if (pcheck != NULL)
 943         *pcheck = pmeth->check;
 944 }
 945
 946 void EVP_PKEY_meth_get_public_check(const EVP_PKEY_METHOD *pmeth,
 947                                     int (**pcheck) (EVP_PKEY *pkey))
 948 {
 949     if (pcheck != NULL)
 950         *pcheck = pmeth->public_check;
 951 }
 952
 953 void EVP_PKEY_meth_get_param_check(const EVP_PKEY_METHOD *pmeth,
 954                                    int (**pcheck) (EVP_PKEY *pkey))
 955 {
 956     if (pcheck != NULL)
 957         *pcheck = pmeth->param_check;
 958 }
 959
 960 void EVP_PKEY_meth_get_digest_custom(EVP_PKEY_METHOD *pmeth,
 961                                      int (**pdigest_custom) (EVP_PKEY_CTX *ctx,
 962                                                              EVP_MD_CTX *mctx))
 963 {
 964     if (pdigest_custom != NULL)
 965         *pdigest_custom = pmeth->digest_custom;
 966 }