crypto/evp/pmeth_lib.c

   1 /*
   2  * Copyright 2006-2017 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 #endif
  55     &hkdf_pkey_meth,
  56 #ifndef OPENSSL_NO_POLY1305
  57     &poly1305_pkey_meth,
  58 #endif
  59 #ifndef OPENSSL_NO_SIPHASH
  60     &siphash_pkey_meth,
  61 #endif
  62 #ifndef OPENSSL_NO_EC
  63     &ed25519_pkey_meth,
  64 #endif
  65 };
  66
  67 DECLARE_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
  68                            pmeth);
  69
  70 static int pmeth_cmp(const EVP_PKEY_METHOD *const *a,
  71                      const EVP_PKEY_METHOD *const *b)
  72 {
  73     return ((*a)->pkey_id - (*b)->pkey_id);
  74 }
  75
  76 IMPLEMENT_OBJ_BSEARCH_CMP_FN(const EVP_PKEY_METHOD *, const EVP_PKEY_METHOD *,
  77                              pmeth);
  78
  79 const EVP_PKEY_METHOD *EVP_PKEY_meth_find(int type)
  80 {
  81     EVP_PKEY_METHOD tmp;
  82     const EVP_PKEY_METHOD *t = &tmp, **ret;
  83     tmp.pkey_id = type;
  84     if (app_pkey_methods) {
  85         int idx;
  86         idx = sk_EVP_PKEY_METHOD_find(app_pkey_methods, &tmp);
  87         if (idx >= 0)
  88             return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
  89     }
  90     ret = OBJ_bsearch_pmeth(&t, standard_methods,
  91                             sizeof(standard_methods) /
  92                             sizeof(EVP_PKEY_METHOD *));
  93     if (!ret || !*ret)
  94         return NULL;
  95     return *ret;
  96 }
  97
  98 static EVP_PKEY_CTX *int_ctx_new(EVP_PKEY *pkey, ENGINE *e, int id)
  99 {
 100     EVP_PKEY_CTX *ret;
 101     const EVP_PKEY_METHOD *pmeth;
 102     if (id == -1) {
 103         if (!pkey || !pkey->ameth)
 104             return NULL;
 105         id = pkey->ameth->pkey_id;
 106     }
 107 #ifndef OPENSSL_NO_ENGINE
 108     if (e == NULL && pkey != NULL)
 109         e = pkey->engine;
 110     /* Try to find an ENGINE which implements this method */
 111     if (e) {
 112         if (!ENGINE_init(e)) {
 113             EVPerr(EVP_F_INT_CTX_NEW, ERR_R_ENGINE_LIB);
 114             return NULL;
 115         }
 116     } else {
 117         e = ENGINE_get_pkey_meth_engine(id);
 118     }
 119
 120     /*
 121      * If an ENGINE handled this method look it up. Otherwise use internal
 122      * tables.
 123      */
 124
 125     if (e)
 126         pmeth = ENGINE_get_pkey_meth(e, id);
 127     else
 128 #endif
 129         pmeth = EVP_PKEY_meth_find(id);
 130
 131     if (pmeth == NULL) {
 132         EVPerr(EVP_F_INT_CTX_NEW, EVP_R_UNSUPPORTED_ALGORITHM);
 133         return NULL;
 134     }
 135
 136     ret = OPENSSL_zalloc(sizeof(*ret));
 137     if (ret == NULL) {
 138 #ifndef OPENSSL_NO_ENGINE
 139         ENGINE_finish(e);
 140 #endif
 141         EVPerr(EVP_F_INT_CTX_NEW, ERR_R_MALLOC_FAILURE);
 142         return NULL;
 143     }
 144     ret->engine = e;
 145     ret->pmeth = pmeth;
 146     ret->operation = EVP_PKEY_OP_UNDEFINED;
 147     ret->pkey = pkey;
 148     if (pkey)
 149         EVP_PKEY_up_ref(pkey);
 150
 151     if (pmeth->init) {
 152         if (pmeth->init(ret) <= 0) {
 153             ret->pmeth = NULL;
 154             EVP_PKEY_CTX_free(ret);
 155             return NULL;
 156         }
 157     }
 158
 159     return ret;
 160 }
 161
 162 EVP_PKEY_METHOD *EVP_PKEY_meth_new(int id, int flags)
 163 {
 164     EVP_PKEY_METHOD *pmeth;
 165
 166     pmeth = OPENSSL_zalloc(sizeof(*pmeth));
 167     if (pmeth == NULL)
 168         return NULL;
 169
 170     pmeth->pkey_id = id;
 171     pmeth->flags = flags | EVP_PKEY_FLAG_DYNAMIC;
 172     return pmeth;
 173 }
 174
 175 void EVP_PKEY_meth_get0_info(int *ppkey_id, int *pflags,
 176                              const EVP_PKEY_METHOD *meth)
 177 {
 178     if (ppkey_id)
 179         *ppkey_id = meth->pkey_id;
 180     if (pflags)
 181         *pflags = meth->flags;
 182 }
 183
 184 void EVP_PKEY_meth_copy(EVP_PKEY_METHOD *dst, const EVP_PKEY_METHOD *src)
 185 {
 186
 187     dst->init = src->init;
 188     dst->copy = src->copy;
 189     dst->cleanup = src->cleanup;
 190
 191     dst->paramgen_init = src->paramgen_init;
 192     dst->paramgen = src->paramgen;
 193
 194     dst->keygen_init = src->keygen_init;
 195     dst->keygen = src->keygen;
 196
 197     dst->sign_init = src->sign_init;
 198     dst->sign = src->sign;
 199
 200     dst->verify_init = src->verify_init;
 201     dst->verify = src->verify;
 202
 203     dst->verify_recover_init = src->verify_recover_init;
 204     dst->verify_recover = src->verify_recover;
 205
 206     dst->signctx_init = src->signctx_init;
 207     dst->signctx = src->signctx;
 208
 209     dst->verifyctx_init = src->verifyctx_init;
 210     dst->verifyctx = src->verifyctx;
 211
 212     dst->encrypt_init = src->encrypt_init;
 213     dst->encrypt = src->encrypt;
 214
 215     dst->decrypt_init = src->decrypt_init;
 216     dst->decrypt = src->decrypt;
 217
 218     dst->derive_init = src->derive_init;
 219     dst->derive = src->derive;
 220
 221     dst->ctrl = src->ctrl;
 222     dst->ctrl_str = src->ctrl_str;
 223
 224     dst->check = src->check;
 225 }
 226
 227 void EVP_PKEY_meth_free(EVP_PKEY_METHOD *pmeth)
 228 {
 229     if (pmeth && (pmeth->flags & EVP_PKEY_FLAG_DYNAMIC))
 230         OPENSSL_free(pmeth);
 231 }
 232
 233 EVP_PKEY_CTX *EVP_PKEY_CTX_new(EVP_PKEY *pkey, ENGINE *e)
 234 {
 235     return int_ctx_new(pkey, e, -1);
 236 }
 237
 238 EVP_PKEY_CTX *EVP_PKEY_CTX_new_id(int id, ENGINE *e)
 239 {
 240     return int_ctx_new(NULL, e, id);
 241 }
 242
 243 EVP_PKEY_CTX *EVP_PKEY_CTX_dup(EVP_PKEY_CTX *pctx)
 244 {
 245     EVP_PKEY_CTX *rctx;
 246     if (!pctx->pmeth || !pctx->pmeth->copy)
 247         return NULL;
 248 #ifndef OPENSSL_NO_ENGINE
 249     /* Make sure it's safe to copy a pkey context using an ENGINE */
 250     if (pctx->engine && !ENGINE_init(pctx->engine)) {
 251         EVPerr(EVP_F_EVP_PKEY_CTX_DUP, ERR_R_ENGINE_LIB);
 252         return 0;
 253     }
 254 #endif
 255     rctx = OPENSSL_malloc(sizeof(*rctx));
 256     if (rctx == NULL)
 257         return NULL;
 258
 259     rctx->pmeth = pctx->pmeth;
 260 #ifndef OPENSSL_NO_ENGINE
 261     rctx->engine = pctx->engine;
 262 #endif
 263
 264     if (pctx->pkey)
 265         EVP_PKEY_up_ref(pctx->pkey);
 266
 267     rctx->pkey = pctx->pkey;
 268
 269     if (pctx->peerkey)
 270         EVP_PKEY_up_ref(pctx->peerkey);
 271
 272     rctx->peerkey = pctx->peerkey;
 273
 274     rctx->data = NULL;
 275     rctx->app_data = NULL;
 276     rctx->operation = pctx->operation;
 277
 278     if (pctx->pmeth->copy(rctx, pctx) > 0)
 279         return rctx;
 280
 281     rctx->pmeth = NULL;
 282     EVP_PKEY_CTX_free(rctx);
 283     return NULL;
 284
 285 }
 286
 287 int EVP_PKEY_meth_add0(const EVP_PKEY_METHOD *pmeth)
 288 {
 289     if (app_pkey_methods == NULL) {
 290         app_pkey_methods = sk_EVP_PKEY_METHOD_new(pmeth_cmp);
 291         if (app_pkey_methods == NULL)
 292             return 0;
 293     }
 294     if (!sk_EVP_PKEY_METHOD_push(app_pkey_methods, pmeth))
 295         return 0;
 296     sk_EVP_PKEY_METHOD_sort(app_pkey_methods);
 297     return 1;
 298 }
 299
 300 void evp_app_cleanup_int(void)
 301 {
 302     if (app_pkey_methods != NULL)
 303         sk_EVP_PKEY_METHOD_pop_free(app_pkey_methods, EVP_PKEY_meth_free);
 304 }
 305
 306 int EVP_PKEY_meth_remove(const EVP_PKEY_METHOD *pmeth)
 307 {
 308     const EVP_PKEY_METHOD *ret;
 309
 310     ret = sk_EVP_PKEY_METHOD_delete_ptr(app_pkey_methods, pmeth);
 311
 312     return ret == NULL ? 0 : 1;
 313 }
 314
 315 size_t EVP_PKEY_meth_get_count(void)
 316 {
 317     size_t rv = OSSL_NELEM(standard_methods);
 318
 319     if (app_pkey_methods)
 320         rv += sk_EVP_PKEY_METHOD_num(app_pkey_methods);
 321     return rv;
 322 }
 323
 324 const EVP_PKEY_METHOD *EVP_PKEY_meth_get0(size_t idx)
 325 {
 326     if (idx < OSSL_NELEM(standard_methods))
 327         return standard_methods[idx];
 328     if (app_pkey_methods == NULL)
 329         return NULL;
 330     idx -= OSSL_NELEM(standard_methods);
 331     if (idx >= (size_t)sk_EVP_PKEY_METHOD_num(app_pkey_methods))
 332         return NULL;
 333     return sk_EVP_PKEY_METHOD_value(app_pkey_methods, idx);
 334 }
 335
 336 void EVP_PKEY_CTX_free(EVP_PKEY_CTX *ctx)
 337 {
 338     if (ctx == NULL)
 339         return;
 340     if (ctx->pmeth && ctx->pmeth->cleanup)
 341         ctx->pmeth->cleanup(ctx);
 342     EVP_PKEY_free(ctx->pkey);
 343     EVP_PKEY_free(ctx->peerkey);
 344 #ifndef OPENSSL_NO_ENGINE
 345     ENGINE_finish(ctx->engine);
 346 #endif
 347     OPENSSL_free(ctx);
 348 }
 349
 350 int EVP_PKEY_CTX_ctrl(EVP_PKEY_CTX *ctx, int keytype, int optype,
 351                       int cmd, int p1, void *p2)
 352 {
 353     int ret;
 354     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl) {
 355         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 356         return -2;
 357     }
 358     if ((keytype != -1) && (ctx->pmeth->pkey_id != keytype))
 359         return -1;
 360
 361     if (ctx->operation == EVP_PKEY_OP_UNDEFINED) {
 362         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_NO_OPERATION_SET);
 363         return -1;
 364     }
 365
 366     if ((optype != -1) && !(ctx->operation & optype)) {
 367         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_INVALID_OPERATION);
 368         return -1;
 369     }
 370
 371     ret = ctx->pmeth->ctrl(ctx, cmd, p1, p2);
 372
 373     if (ret == -2)
 374         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL, EVP_R_COMMAND_NOT_SUPPORTED);
 375
 376     return ret;
 377
 378 }
 379
 380 int EVP_PKEY_CTX_ctrl_uint64(EVP_PKEY_CTX *ctx, int keytype, int optype,
 381                              int cmd, uint64_t value)
 382 {
 383     return EVP_PKEY_CTX_ctrl(ctx, keytype, optype, cmd, 0, &value);
 384 }
 385
 386 int EVP_PKEY_CTX_ctrl_str(EVP_PKEY_CTX *ctx,
 387                           const char *name, const char *value)
 388 {
 389     if (!ctx || !ctx->pmeth || !ctx->pmeth->ctrl_str) {
 390         EVPerr(EVP_F_EVP_PKEY_CTX_CTRL_STR, EVP_R_COMMAND_NOT_SUPPORTED);
 391         return -2;
 392     }
 393     if (strcmp(name, "digest") == 0)
 394         return EVP_PKEY_CTX_md(ctx, EVP_PKEY_OP_TYPE_SIG, EVP_PKEY_CTRL_MD,
 395                                value);
 396     return ctx->pmeth->ctrl_str(ctx, name, value);
 397 }
 398
 399 /* Utility functions to send a string of hex string to a ctrl */
 400
 401 int EVP_PKEY_CTX_str2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *str)
 402 {
 403     size_t len;
 404
 405     len = strlen(str);
 406     if (len > INT_MAX)
 407         return -1;
 408     return ctx->pmeth->ctrl(ctx, cmd, len, (void *)str);
 409 }
 410
 411 int EVP_PKEY_CTX_hex2ctrl(EVP_PKEY_CTX *ctx, int cmd, const char *hex)
 412 {
 413     unsigned char *bin;
 414     long binlen;
 415     int rv = -1;
 416
 417     bin = OPENSSL_hexstr2buf(hex, &binlen);
 418     if (bin == NULL)
 419         return 0;
 420     if (binlen <= INT_MAX)
 421         rv = ctx->pmeth->ctrl(ctx, cmd, binlen, bin);
 422     OPENSSL_free(bin);
 423     return rv;
 424 }
 425
 426 /* Pass a message digest to a ctrl */
 427 int EVP_PKEY_CTX_md(EVP_PKEY_CTX *ctx, int optype, int cmd, const char *md)
 428 {
 429     const EVP_MD *m;
 430
 431     if (md == NULL || (m = EVP_get_digestbyname(md)) == NULL) {
 432         EVPerr(EVP_F_EVP_PKEY_CTX_MD, EVP_R_INVALID_DIGEST);
 433         return 0;
 434     }
 435     return EVP_PKEY_CTX_ctrl(ctx, -1, optype, cmd, 0, (void *)m);
 436 }
 437
 438 int EVP_PKEY_CTX_get_operation(EVP_PKEY_CTX *ctx)
 439 {
 440     return ctx->operation;
 441 }
 442
 443 void EVP_PKEY_CTX_set0_keygen_info(EVP_PKEY_CTX *ctx, int *dat, int datlen)
 444 {
 445     ctx->keygen_info = dat;
 446     ctx->keygen_info_count = datlen;
 447 }
 448
 449 void EVP_PKEY_CTX_set_data(EVP_PKEY_CTX *ctx, void *data)
 450 {
 451     ctx->data = data;
 452 }
 453
 454 void *EVP_PKEY_CTX_get_data(EVP_PKEY_CTX *ctx)
 455 {
 456     return ctx->data;
 457 }
 458
 459 EVP_PKEY *EVP_PKEY_CTX_get0_pkey(EVP_PKEY_CTX *ctx)
 460 {
 461     return ctx->pkey;
 462 }
 463
 464 EVP_PKEY *EVP_PKEY_CTX_get0_peerkey(EVP_PKEY_CTX *ctx)
 465 {
 466     return ctx->peerkey;
 467 }
 468
 469 void EVP_PKEY_CTX_set_app_data(EVP_PKEY_CTX *ctx, void *data)
 470 {
 471     ctx->app_data = data;
 472 }
 473
 474 void *EVP_PKEY_CTX_get_app_data(EVP_PKEY_CTX *ctx)
 475 {
 476     return ctx->app_data;
 477 }
 478
 479 void EVP_PKEY_meth_set_init(EVP_PKEY_METHOD *pmeth,
 480                             int (*init) (EVP_PKEY_CTX *ctx))
 481 {
 482     pmeth->init = init;
 483 }
 484
 485 void EVP_PKEY_meth_set_copy(EVP_PKEY_METHOD *pmeth,
 486                             int (*copy) (EVP_PKEY_CTX *dst,
 487                                          EVP_PKEY_CTX *src))
 488 {
 489     pmeth->copy = copy;
 490 }
 491
 492 void EVP_PKEY_meth_set_cleanup(EVP_PKEY_METHOD *pmeth,
 493                                void (*cleanup) (EVP_PKEY_CTX *ctx))
 494 {
 495     pmeth->cleanup = cleanup;
 496 }
 497
 498 void EVP_PKEY_meth_set_paramgen(EVP_PKEY_METHOD *pmeth,
 499                                 int (*paramgen_init) (EVP_PKEY_CTX *ctx),
 500                                 int (*paramgen) (EVP_PKEY_CTX *ctx,
 501                                                  EVP_PKEY *pkey))
 502 {
 503     pmeth->paramgen_init = paramgen_init;
 504     pmeth->paramgen = paramgen;
 505 }
 506
 507 void EVP_PKEY_meth_set_keygen(EVP_PKEY_METHOD *pmeth,
 508                               int (*keygen_init) (EVP_PKEY_CTX *ctx),
 509                               int (*keygen) (EVP_PKEY_CTX *ctx,
 510                                              EVP_PKEY *pkey))
 511 {
 512     pmeth->keygen_init = keygen_init;
 513     pmeth->keygen = keygen;
 514 }
 515
 516 void EVP_PKEY_meth_set_sign(EVP_PKEY_METHOD *pmeth,
 517                             int (*sign_init) (EVP_PKEY_CTX *ctx),
 518                             int (*sign) (EVP_PKEY_CTX *ctx,
 519                                          unsigned char *sig, size_t *siglen,
 520                                          const unsigned char *tbs,
 521                                          size_t tbslen))
 522 {
 523     pmeth->sign_init = sign_init;
 524     pmeth->sign = sign;
 525 }
 526
 527 void EVP_PKEY_meth_set_verify(EVP_PKEY_METHOD *pmeth,
 528                               int (*verify_init) (EVP_PKEY_CTX *ctx),
 529                               int (*verify) (EVP_PKEY_CTX *ctx,
 530                                              const unsigned char *sig,
 531                                              size_t siglen,
 532                                              const unsigned char *tbs,
 533                                              size_t tbslen))
 534 {
 535     pmeth->verify_init = verify_init;
 536     pmeth->verify = verify;
 537 }
 538
 539 void EVP_PKEY_meth_set_verify_recover(EVP_PKEY_METHOD *pmeth,
 540                                       int (*verify_recover_init) (EVP_PKEY_CTX
 541                                                                   *ctx),
 542                                       int (*verify_recover) (EVP_PKEY_CTX
 543                                                              *ctx,
 544                                                              unsigned char
 545                                                              *sig,
 546                                                              size_t *siglen,
 547                                                              const unsigned
 548                                                              char *tbs,
 549                                                              size_t tbslen))
 550 {
 551     pmeth->verify_recover_init = verify_recover_init;
 552     pmeth->verify_recover = verify_recover;
 553 }
 554
 555 void EVP_PKEY_meth_set_signctx(EVP_PKEY_METHOD *pmeth,
 556                                int (*signctx_init) (EVP_PKEY_CTX *ctx,
 557                                                     EVP_MD_CTX *mctx),
 558                                int (*signctx) (EVP_PKEY_CTX *ctx,
 559                                                unsigned char *sig,
 560                                                size_t *siglen,
 561                                                EVP_MD_CTX *mctx))
 562 {
 563     pmeth->signctx_init = signctx_init;
 564     pmeth->signctx = signctx;
 565 }
 566
 567 void EVP_PKEY_meth_set_verifyctx(EVP_PKEY_METHOD *pmeth,
 568                                  int (*verifyctx_init) (EVP_PKEY_CTX *ctx,
 569                                                         EVP_MD_CTX *mctx),
 570                                  int (*verifyctx) (EVP_PKEY_CTX *ctx,
 571                                                    const unsigned char *sig,
 572                                                    int siglen,
 573                                                    EVP_MD_CTX *mctx))
 574 {
 575     pmeth->verifyctx_init = verifyctx_init;
 576     pmeth->verifyctx = verifyctx;
 577 }
 578
 579 void EVP_PKEY_meth_set_encrypt(EVP_PKEY_METHOD *pmeth,
 580                                int (*encrypt_init) (EVP_PKEY_CTX *ctx),
 581                                int (*encryptfn) (EVP_PKEY_CTX *ctx,
 582                                                  unsigned char *out,
 583                                                  size_t *outlen,
 584                                                  const unsigned char *in,
 585                                                  size_t inlen))
 586 {
 587     pmeth->encrypt_init = encrypt_init;
 588     pmeth->encrypt = encryptfn;
 589 }
 590
 591 void EVP_PKEY_meth_set_decrypt(EVP_PKEY_METHOD *pmeth,
 592                                int (*decrypt_init) (EVP_PKEY_CTX *ctx),
 593                                int (*decrypt) (EVP_PKEY_CTX *ctx,
 594                                                unsigned char *out,
 595                                                size_t *outlen,
 596                                                const unsigned char *in,
 597                                                size_t inlen))
 598 {
 599     pmeth->decrypt_init = decrypt_init;
 600     pmeth->decrypt = decrypt;
 601 }
 602
 603 void EVP_PKEY_meth_set_derive(EVP_PKEY_METHOD *pmeth,
 604                               int (*derive_init) (EVP_PKEY_CTX *ctx),
 605                               int (*derive) (EVP_PKEY_CTX *ctx,
 606                                              unsigned char *key,
 607                                              size_t *keylen))
 608 {
 609     pmeth->derive_init = derive_init;
 610     pmeth->derive = derive;
 611 }
 612
 613 void EVP_PKEY_meth_set_ctrl(EVP_PKEY_METHOD *pmeth,
 614                             int (*ctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
 615                                          void *p2),
 616                             int (*ctrl_str) (EVP_PKEY_CTX *ctx,
 617                                              const char *type,
 618                                              const char *value))
 619 {
 620     pmeth->ctrl = ctrl;
 621     pmeth->ctrl_str = ctrl_str;
 622 }
 623
 624 void EVP_PKEY_meth_set_check(EVP_PKEY_METHOD *pmeth,
 625                              int (*check) (EVP_PKEY *pkey))
 626 {
 627     pmeth->check = check;
 628 }
 629
 630 void EVP_PKEY_meth_get_init(EVP_PKEY_METHOD *pmeth,
 631                             int (**pinit) (EVP_PKEY_CTX *ctx))
 632 {
 633     *pinit = pmeth->init;
 634 }
 635
 636 void EVP_PKEY_meth_get_copy(EVP_PKEY_METHOD *pmeth,
 637                             int (**pcopy) (EVP_PKEY_CTX *dst,
 638                                            EVP_PKEY_CTX *src))
 639 {
 640     *pcopy = pmeth->copy;
 641 }
 642
 643 void EVP_PKEY_meth_get_cleanup(EVP_PKEY_METHOD *pmeth,
 644                                void (**pcleanup) (EVP_PKEY_CTX *ctx))
 645 {
 646     *pcleanup = pmeth->cleanup;
 647 }
 648
 649 void EVP_PKEY_meth_get_paramgen(EVP_PKEY_METHOD *pmeth,
 650                                 int (**pparamgen_init) (EVP_PKEY_CTX *ctx),
 651                                 int (**pparamgen) (EVP_PKEY_CTX *ctx,
 652                                                    EVP_PKEY *pkey))
 653 {
 654     if (pparamgen_init)
 655         *pparamgen_init = pmeth->paramgen_init;
 656     if (pparamgen)
 657         *pparamgen = pmeth->paramgen;
 658 }
 659
 660 void EVP_PKEY_meth_get_keygen(EVP_PKEY_METHOD *pmeth,
 661                               int (**pkeygen_init) (EVP_PKEY_CTX *ctx),
 662                               int (**pkeygen) (EVP_PKEY_CTX *ctx,
 663                                                EVP_PKEY *pkey))
 664 {
 665     if (pkeygen_init)
 666         *pkeygen_init = pmeth->keygen_init;
 667     if (pkeygen)
 668         *pkeygen = pmeth->keygen;
 669 }
 670
 671 void EVP_PKEY_meth_get_sign(EVP_PKEY_METHOD *pmeth,
 672                             int (**psign_init) (EVP_PKEY_CTX *ctx),
 673                             int (**psign) (EVP_PKEY_CTX *ctx,
 674                                            unsigned char *sig, size_t *siglen,
 675                                            const unsigned char *tbs,
 676                                            size_t tbslen))
 677 {
 678     if (psign_init)
 679         *psign_init = pmeth->sign_init;
 680     if (psign)
 681         *psign = pmeth->sign;
 682 }
 683
 684 void EVP_PKEY_meth_get_verify(EVP_PKEY_METHOD *pmeth,
 685                               int (**pverify_init) (EVP_PKEY_CTX *ctx),
 686                               int (**pverify) (EVP_PKEY_CTX *ctx,
 687                                                const unsigned char *sig,
 688                                                size_t siglen,
 689                                                const unsigned char *tbs,
 690                                                size_t tbslen))
 691 {
 692     if (pverify_init)
 693         *pverify_init = pmeth->verify_init;
 694     if (pverify)
 695         *pverify = pmeth->verify;
 696 }
 697
 698 void EVP_PKEY_meth_get_verify_recover(EVP_PKEY_METHOD *pmeth,
 699                                       int (**pverify_recover_init) (EVP_PKEY_CTX
 700                                                                     *ctx),
 701                                       int (**pverify_recover) (EVP_PKEY_CTX
 702                                                                *ctx,
 703                                                                unsigned char
 704                                                                *sig,
 705                                                                size_t *siglen,
 706                                                                const unsigned
 707                                                                char *tbs,
 708                                                                size_t tbslen))
 709 {
 710     if (pverify_recover_init)
 711         *pverify_recover_init = pmeth->verify_recover_init;
 712     if (pverify_recover)
 713         *pverify_recover = pmeth->verify_recover;
 714 }
 715
 716 void EVP_PKEY_meth_get_signctx(EVP_PKEY_METHOD *pmeth,
 717                                int (**psignctx_init) (EVP_PKEY_CTX *ctx,
 718                                                       EVP_MD_CTX *mctx),
 719                                int (**psignctx) (EVP_PKEY_CTX *ctx,
 720                                                  unsigned char *sig,
 721                                                  size_t *siglen,
 722                                                  EVP_MD_CTX *mctx))
 723 {
 724     if (psignctx_init)
 725         *psignctx_init = pmeth->signctx_init;
 726     if (psignctx)
 727         *psignctx = pmeth->signctx;
 728 }
 729
 730 void EVP_PKEY_meth_get_verifyctx(EVP_PKEY_METHOD *pmeth,
 731                                  int (**pverifyctx_init) (EVP_PKEY_CTX *ctx,
 732                                                           EVP_MD_CTX *mctx),
 733                                  int (**pverifyctx) (EVP_PKEY_CTX *ctx,
 734                                                      const unsigned char *sig,
 735                                                      int siglen,
 736                                                      EVP_MD_CTX *mctx))
 737 {
 738     if (pverifyctx_init)
 739         *pverifyctx_init = pmeth->verifyctx_init;
 740     if (pverifyctx)
 741         *pverifyctx = pmeth->verifyctx;
 742 }
 743
 744 void EVP_PKEY_meth_get_encrypt(EVP_PKEY_METHOD *pmeth,
 745                                int (**pencrypt_init) (EVP_PKEY_CTX *ctx),
 746                                int (**pencryptfn) (EVP_PKEY_CTX *ctx,
 747                                                    unsigned char *out,
 748                                                    size_t *outlen,
 749                                                    const unsigned char *in,
 750                                                    size_t inlen))
 751 {
 752     if (pencrypt_init)
 753         *pencrypt_init = pmeth->encrypt_init;
 754     if (pencryptfn)
 755         *pencryptfn = pmeth->encrypt;
 756 }
 757
 758 void EVP_PKEY_meth_get_decrypt(EVP_PKEY_METHOD *pmeth,
 759                                int (**pdecrypt_init) (EVP_PKEY_CTX *ctx),
 760                                int (**pdecrypt) (EVP_PKEY_CTX *ctx,
 761                                                  unsigned char *out,
 762                                                  size_t *outlen,
 763                                                  const unsigned char *in,
 764                                                  size_t inlen))
 765 {
 766     if (pdecrypt_init)
 767         *pdecrypt_init = pmeth->decrypt_init;
 768     if (pdecrypt)
 769         *pdecrypt = pmeth->decrypt;
 770 }
 771
 772 void EVP_PKEY_meth_get_derive(EVP_PKEY_METHOD *pmeth,
 773                               int (**pderive_init) (EVP_PKEY_CTX *ctx),
 774                               int (**pderive) (EVP_PKEY_CTX *ctx,
 775                                                unsigned char *key,
 776                                                size_t *keylen))
 777 {
 778     if (pderive_init)
 779         *pderive_init = pmeth->derive_init;
 780     if (pderive)
 781         *pderive = pmeth->derive;
 782 }
 783
 784 void EVP_PKEY_meth_get_ctrl(EVP_PKEY_METHOD *pmeth,
 785                             int (**pctrl) (EVP_PKEY_CTX *ctx, int type, int p1,
 786                                            void *p2),
 787                             int (**pctrl_str) (EVP_PKEY_CTX *ctx,
 788                                                const char *type,
 789                                                const char *value))
 790 {
 791     if (pctrl)
 792         *pctrl = pmeth->ctrl;
 793     if (pctrl_str)
 794         *pctrl_str = pmeth->ctrl_str;
 795 }
 796
 797 void EVP_PKEY_meth_get_check(EVP_PKEY_METHOD *pmeth,
 798                              int (**pcheck) (EVP_PKEY *pkey))
 799 {
 800     if (*pcheck)
 801         *pcheck = pmeth->check;
 802 }