crypto/evp/pmeth_lib.c

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