crypto/rsa/rsa_pmeth.c

   1 /* crypto/rsa/rsa_pmeth.c */
   2 /* Written by Dr Stephen N Henson (steve@openssl.org) for the OpenSSL
   3  * project 2006.
   4  */
   5 /* ====================================================================
   6  * Copyright (c) 2006 The OpenSSL Project.  All rights reserved.
   7  *
   8  * Redistribution and use in source and binary forms, with or without
   9  * modification, are permitted provided that the following conditions
  10  * are met:
  11  *
  12  * 1. Redistributions of source code must retain the above copyright
  13  *    notice, this list of conditions and the following disclaimer.
  14  *
  15  * 2. Redistributions in binary form must reproduce the above copyright
  16  *    notice, this list of conditions and the following disclaimer in
  17  *    the documentation and/or other materials provided with the
  18  *    distribution.
  19  *
  20  * 3. All advertising materials mentioning features or use of this
  21  *    software must display the following acknowledgment:
  22  *    "This product includes software developed by the OpenSSL Project
  23  *    for use in the OpenSSL Toolkit. (http://www.OpenSSL.org/)"
  24  *
  25  * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
  26  *    endorse or promote products derived from this software without
  27  *    prior written permission. For written permission, please contact
  28  *    licensing@OpenSSL.org.
  29  *
  30  * 5. Products derived from this software may not be called "OpenSSL"
  31  *    nor may "OpenSSL" appear in their names without prior written
  32  *    permission of the OpenSSL Project.
  33  *
  34  * 6. Redistributions of any form whatsoever must retain the following
  35  *    acknowledgment:
  36  *    "This product includes software developed by the OpenSSL Project
  37  *    for use in the OpenSSL Toolkit (http://www.OpenSSL.org/)"
  38  *
  39  * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
  40  * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  41  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  42  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
  43  * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  44  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  45  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  46  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  48  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  49  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
  50  * OF THE POSSIBILITY OF SUCH DAMAGE.
  51  * ====================================================================
  52  *
  53  * This product includes cryptographic software written by Eric Young
  54  * (eay@cryptsoft.com).  This product includes software written by Tim
  55  * Hudson (tjh@cryptsoft.com).
  56  *
  57  */
  58
  59 #include <stdio.h>
  60 #include "cryptlib.h"
  61 #include <openssl/asn1t.h>
  62 #include <openssl/x509.h>
  63 #include <openssl/rsa.h>
  64 #include <openssl/bn.h>
  65 #include <openssl/evp.h>
  66 #include "evp_locl.h"
  67 #include "rsa_locl.h"
  68
  69 /* RSA pkey context structure */
  70
  71 typedef struct
  72         {
  73         /* Key gen parameters */
  74         int nbits;
  75         BIGNUM *pub_exp;
  76         /* Keygen callback info */
  77         int gentmp[2];
  78         /* RSA padding mode */
  79         int pad_mode;
  80         /* message digest */
  81         const EVP_MD *md;
  82         /* message digest for MGF1 */
  83         const EVP_MD *mgf1md;
  84         /* PSS/OAEP salt length */
  85         int saltlen;
  86         /* Temp buffer */
  87         unsigned char *tbuf;
  88         } RSA_PKEY_CTX;
  89
  90 static int pkey_rsa_init(EVP_PKEY_CTX *ctx)
  91         {
  92         RSA_PKEY_CTX *rctx;
  93         rctx = OPENSSL_malloc(sizeof(RSA_PKEY_CTX));
  94         if (!rctx)
  95                 return 0;
  96         rctx->nbits = 1024;
  97         rctx->pub_exp = NULL;
  98         rctx->pad_mode = RSA_PKCS1_PADDING;
  99         rctx->md = NULL;
 100         rctx->mgf1md = NULL;
 101         rctx->tbuf = NULL;
 102
 103         rctx->saltlen = -2;
 104
 105         ctx->data = rctx;
 106         ctx->keygen_info = rctx->gentmp;
 107         ctx->keygen_info_count = 2;
 108
 109         return 1;
 110         }
 111
 112 static int pkey_rsa_copy(EVP_PKEY_CTX *dst, EVP_PKEY_CTX *src)
 113         {
 114         RSA_PKEY_CTX *dctx, *sctx;
 115         if (!pkey_rsa_init(dst))
 116                 return 0;
 117         sctx = src->data;
 118         dctx = dst->data;
 119         dctx->nbits = sctx->nbits;
 120         if (sctx->pub_exp)
 121                 {
 122                 dctx->pub_exp = BN_dup(sctx->pub_exp);
 123                 if (!dctx->pub_exp)
 124                         return 0;
 125                 }
 126         dctx->pad_mode = sctx->pad_mode;
 127         dctx->md = sctx->md;
 128         return 1;
 129         }
 130
 131 static int setup_tbuf(RSA_PKEY_CTX *ctx, EVP_PKEY_CTX *pk)
 132         {
 133         if (ctx->tbuf)
 134                 return 1;
 135         ctx->tbuf = OPENSSL_malloc(EVP_PKEY_size(pk->pkey));
 136         if (!ctx->tbuf)
 137                 return 0;
 138         return 1;
 139         }
 140
 141 static void pkey_rsa_cleanup(EVP_PKEY_CTX *ctx)
 142         {
 143         RSA_PKEY_CTX *rctx = ctx->data;
 144         if (rctx)
 145                 {
 146                 if (rctx->pub_exp)
 147                         BN_free(rctx->pub_exp);
 148                 if (rctx->tbuf)
 149                         OPENSSL_free(rctx->tbuf);
 150                 OPENSSL_free(rctx);
 151                 }
 152         }
 153
 154 static int pkey_rsa_sign(EVP_PKEY_CTX *ctx, unsigned char *sig, size_t *siglen,
 155                                         const unsigned char *tbs, size_t tbslen)
 156         {
 157         int ret;
 158         RSA_PKEY_CTX *rctx = ctx->data;
 159         RSA *rsa = ctx->pkey->pkey.rsa;
 160
 161         if (rctx->md)
 162                 {
 163                 if (tbslen != (size_t)EVP_MD_size(rctx->md))
 164                         {
 165                         RSAerr(RSA_F_PKEY_RSA_SIGN,
 166                                         RSA_R_INVALID_DIGEST_LENGTH);
 167                         return -1;
 168                         }
 169                 if (rctx->pad_mode == RSA_X931_PADDING)
 170                         {
 171                         if (!setup_tbuf(rctx, ctx))
 172                                 return -1;
 173                         memcpy(rctx->tbuf, tbs, tbslen);
 174                         rctx->tbuf[tbslen] =
 175                                 RSA_X931_hash_id(EVP_MD_type(rctx->md));
 176                         ret = RSA_private_encrypt(tbslen + 1, rctx->tbuf,
 177                                                 sig, rsa, RSA_X931_PADDING);
 178                         }
 179                 else if (rctx->pad_mode == RSA_PKCS1_PADDING)
 180                         {
 181                         unsigned int sltmp;
 182                         ret = RSA_sign(EVP_MD_type(rctx->md),
 183                                                 tbs, tbslen, sig, &sltmp, rsa);
 184                         if (ret <= 0)
 185                                 return ret;
 186                         ret = sltmp;
 187                         }
 188                 else if (rctx->pad_mode == RSA_PKCS1_PSS_PADDING)
 189                         {
 190                         if (!setup_tbuf(rctx, ctx))
 191                                 return -1;
 192                         if (!RSA_padding_add_PKCS1_PSS_mgf1(rsa,
 193                                                 rctx->tbuf, tbs,
 194                                                 rctx->md, rctx->mgf1md,
 195                                                 rctx->saltlen))
 196                                 return -1;
 197                         ret = RSA_private_encrypt(RSA_size(rsa), rctx->tbuf,
 198                                                 sig, rsa, RSA_NO_PADDING);
 199                         }
 200                 else
 201                         return -1;
 202                 }
 203         else
 204                 ret = RSA_private_encrypt(tbslen, tbs, sig, ctx->pkey->pkey.rsa,
 205                                                         rctx->pad_mode);
 206         if (ret < 0)
 207                 return ret;
 208         *siglen = ret;
 209         return 1;
 210         }
 211
 212
 213 static int pkey_rsa_verifyrecover(EVP_PKEY_CTX *ctx,
 214                                         unsigned char *rout, size_t *routlen,
 215                                         const unsigned char *sig, size_t siglen)
 216         {
 217         int ret;
 218         RSA_PKEY_CTX *rctx = ctx->data;
 219
 220         if (rctx->md)
 221                 {
 222                 if (rctx->pad_mode == RSA_X931_PADDING)
 223                         {
 224                         if (!setup_tbuf(rctx, ctx))
 225                                 return -1;
 226                         ret = RSA_public_decrypt(siglen, sig,
 227                                                 rctx->tbuf, ctx->pkey->pkey.rsa,
 228                                                 RSA_X931_PADDING);
 229                         if (ret < 1)
 230                                 return 0;
 231                         ret--;
 232                         if (rctx->tbuf[ret] !=
 233                                 RSA_X931_hash_id(EVP_MD_type(rctx->md)))
 234                                 {
 235                                 RSAerr(RSA_F_PKEY_RSA_VERIFYRECOVER,
 236                                                 RSA_R_ALGORITHM_MISMATCH);
 237                                 return 0;
 238                                 }
 239                         if (ret != EVP_MD_size(rctx->md))
 240                                 {
 241                                 RSAerr(RSA_F_PKEY_RSA_VERIFYRECOVER,
 242                                         RSA_R_INVALID_DIGEST_LENGTH);
 243                                 return 0;
 244                                 }
 245                         if (rout)
 246                                 memcpy(rout, rctx->tbuf, ret);
 247                         }
 248                 else if (rctx->pad_mode == RSA_PKCS1_PADDING)
 249                         {
 250                         size_t sltmp;
 251                         ret = int_rsa_verify(EVP_MD_type(rctx->md),
 252                                                 NULL, 0, rout, &sltmp,
 253                                         sig, siglen, ctx->pkey->pkey.rsa);
 254                         if (ret <= 0)
 255                                 return 0;
 256                         ret = sltmp;
 257                         }
 258                 else
 259                         return -1;
 260                 }
 261         else
 262                 ret = RSA_public_decrypt(siglen, sig, rout, ctx->pkey->pkey.rsa,
 263                                                         rctx->pad_mode);
 264         if (ret < 0)
 265                 return ret;
 266         *routlen = ret;
 267         return 1;
 268         }
 269
 270 static int pkey_rsa_verify(EVP_PKEY_CTX *ctx,
 271                                         const unsigned char *sig, size_t siglen,
 272                                         const unsigned char *tbs, size_t tbslen)
 273         {
 274         RSA_PKEY_CTX *rctx = ctx->data;
 275         RSA *rsa = ctx->pkey->pkey.rsa;
 276         size_t rslen;
 277         if (rctx->md)
 278                 {
 279                 if (rctx->pad_mode == RSA_PKCS1_PADDING)
 280                         return RSA_verify(EVP_MD_type(rctx->md), tbs, tbslen,
 281                                         sig, siglen, rsa);
 282                 if (rctx->pad_mode == RSA_X931_PADDING)
 283                         {
 284                         if (pkey_rsa_verifyrecover(ctx, NULL, &rslen,
 285                                         sig, siglen) <= 0)
 286                                 return 0;
 287                         }
 288                 else if (rctx->pad_mode == RSA_PKCS1_PSS_PADDING)
 289                         {
 290                         int ret;
 291                         if (!setup_tbuf(rctx, ctx))
 292                                 return -1;
 293                         ret = RSA_public_decrypt(siglen, sig, rctx->tbuf,
 294                                                         rsa, RSA_NO_PADDING);
 295                         if (ret <= 0)
 296                                 return 0;
 297                         ret = RSA_verify_PKCS1_PSS_mgf1(rsa, tbs,
 298                                                 rctx->md, rctx->mgf1md,
 299                                                 rctx->tbuf, rctx->saltlen);
 300                         if (ret <= 0)
 301                                 return 0;
 302                         return 1;
 303                         }
 304                 else
 305                         return -1;
 306                 }
 307         else
 308                 {
 309                 if (!setup_tbuf(rctx, ctx))
 310                         return -1;
 311                 rslen = RSA_public_decrypt(siglen, sig, rctx->tbuf,
 312                                                 rsa, rctx->pad_mode);
 313                 if (rslen == 0)
 314                         return 0;
 315                 }
 316
 317         if ((rslen != tbslen) || memcmp(tbs, rctx->tbuf, rslen))
 318                 return 0;
 319
 320         return 1;
 321
 322         }
 323
 324
 325 static int pkey_rsa_encrypt(EVP_PKEY_CTX *ctx,
 326                                         unsigned char *out, size_t *outlen,
 327                                         const unsigned char *in, size_t inlen)
 328         {
 329         int ret;
 330         RSA_PKEY_CTX *rctx = ctx->data;
 331         ret = RSA_public_encrypt(inlen, in, out, ctx->pkey->pkey.rsa,
 332                                                         rctx->pad_mode);
 333         if (ret < 0)
 334                 return ret;
 335         *outlen = ret;
 336         return 1;
 337         }
 338
 339 static int pkey_rsa_decrypt(EVP_PKEY_CTX *ctx,
 340                                         unsigned char *out, size_t *outlen,
 341                                         const unsigned char *in, size_t inlen)
 342         {
 343         int ret;
 344         RSA_PKEY_CTX *rctx = ctx->data;
 345         ret = RSA_private_decrypt(inlen, in, out, ctx->pkey->pkey.rsa,
 346                                                         rctx->pad_mode);
 347         if (ret < 0)
 348                 return ret;
 349         *outlen = ret;
 350         return 1;
 351         }
 352
 353 static int check_padding_md(const EVP_MD *md, int padding)
 354         {
 355         if (!md)
 356                 return 1;
 357
 358         if (padding == RSA_NO_PADDING)
 359                 {
 360                 RSAerr(RSA_F_CHECK_PADDING_MD, RSA_R_INVALID_PADDING_MODE);
 361                 return 0;
 362                 }
 363
 364         if (padding == RSA_X931_PADDING)
 365                 {
 366                 if (RSA_X931_hash_id(EVP_MD_type(md)) == -1)
 367                         {
 368                         RSAerr(RSA_F_CHECK_PADDING_MD,
 369                                                 RSA_R_INVALID_X931_DIGEST);
 370                         return 0;
 371                         }
 372                 return 1;
 373                 }
 374
 375         return 1;
 376         }
 377
 378
 379 static int pkey_rsa_ctrl(EVP_PKEY_CTX *ctx, int type, int p1, void *p2)
 380         {
 381         RSA_PKEY_CTX *rctx = ctx->data;
 382         switch (type)
 383                 {
 384                 case EVP_PKEY_CTRL_RSA_PADDING:
 385                 if ((p1 >= RSA_PKCS1_PADDING) && (p1 <= RSA_PKCS1_PSS_PADDING))
 386                         {
 387                         if (!check_padding_md(rctx->md, p1))
 388                                 return 0;
 389                         if (p1 == RSA_PKCS1_PSS_PADDING)
 390                                 {
 391                                 if (!(ctx->operation &
 392                                      (EVP_PKEY_OP_SIGN | EVP_PKEY_OP_VERIFY)))
 393                                         goto bad_pad;
 394                                 if (!rctx->md)
 395                                         rctx->md = EVP_sha1();
 396                                 }
 397                         if (p1 == RSA_PKCS1_OAEP_PADDING)
 398                                 {
 399                                 if (!(ctx->operation & EVP_PKEY_OP_TYPE_CRYPT))
 400                                         goto bad_pad;
 401                                 if (!rctx->md)
 402                                         rctx->md = EVP_sha1();
 403                                 }
 404                         rctx->pad_mode = p1;
 405                         return 1;
 406                         }
 407                 bad_pad:
 408                 RSAerr(RSA_F_PKEY_RSA_CTRL,
 409                                 RSA_R_ILLEGAL_OR_UNSUPPORTED_PADDING_MODE);
 410                 return -2;
 411
 412                 case EVP_PKEY_CTRL_GET_RSA_PADDING:
 413                 *(int *)p2 = rctx->pad_mode;
 414                 return 1;
 415
 416                 case EVP_PKEY_CTRL_RSA_PSS_SALTLEN:
 417                 case EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN:
 418                 if (rctx->pad_mode != RSA_PKCS1_PSS_PADDING)
 419                         {
 420                         RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_PSS_SALTLEN);
 421                         return -2;
 422                         }
 423                 if (type == EVP_PKEY_CTRL_GET_RSA_PSS_SALTLEN)
 424                         *(int *)p2 = rctx->saltlen;
 425                 else
 426                         {
 427                         if (p1 < -2)
 428                                 return -2;
 429                         rctx->saltlen = p1;
 430                         }
 431                 return 1;
 432
 433                 case EVP_PKEY_CTRL_RSA_KEYGEN_BITS:
 434                 if (p1 < 256)
 435                         {
 436                         RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_KEYBITS);
 437                         return -2;
 438                         }
 439                 rctx->nbits = p1;
 440                 return 1;
 441
 442                 case EVP_PKEY_CTRL_RSA_KEYGEN_PUBEXP:
 443                 if (!p2)
 444                         return -2;
 445                 rctx->pub_exp = p2;
 446                 return 1;
 447
 448                 case EVP_PKEY_CTRL_MD:
 449                 if (!check_padding_md(p2, rctx->pad_mode))
 450                         return 0;
 451                 rctx->md = p2;
 452                 return 1;
 453
 454                 case EVP_PKEY_CTRL_RSA_MGF1_MD:
 455                 case EVP_PKEY_CTRL_GET_RSA_MGF1_MD:
 456                 if (rctx->pad_mode != RSA_PKCS1_PSS_PADDING)
 457                         {
 458                         RSAerr(RSA_F_PKEY_RSA_CTRL, RSA_R_INVALID_MGF1_MD);
 459                         return -2;
 460                         }
 461                 if (type == EVP_PKEY_CTRL_GET_RSA_MGF1_MD)
 462                         {
 463                         if (rctx->mgf1md)
 464                                 *(const EVP_MD **)p2 = rctx->mgf1md;
 465                         else
 466                                 *(const EVP_MD **)p2 = rctx->md;
 467                         }
 468                 else
 469                         rctx->mgf1md = p2;
 470                 return 1;
 471
 472                 case EVP_PKEY_CTRL_DIGESTINIT:
 473                 case EVP_PKEY_CTRL_PKCS7_ENCRYPT:
 474                 case EVP_PKEY_CTRL_PKCS7_DECRYPT:
 475                 case EVP_PKEY_CTRL_PKCS7_SIGN:
 476 #ifndef OPENSSL_NO_CMS
 477                 case EVP_PKEY_CTRL_CMS_ENCRYPT:
 478                 case EVP_PKEY_CTRL_CMS_DECRYPT:
 479                 case EVP_PKEY_CTRL_CMS_SIGN:
 480 #endif
 481                 return 1;
 482                 case EVP_PKEY_CTRL_PEER_KEY:
 483                         RSAerr(RSA_F_PKEY_RSA_CTRL,
 484                         RSA_R_OPERATION_NOT_SUPPORTED_FOR_THIS_KEYTYPE);
 485                         return -2;
 486
 487                 default:
 488                 return -2;
 489
 490                 }
 491         }
 492
 493 static int pkey_rsa_ctrl_str(EVP_PKEY_CTX *ctx,
 494                         const char *type, const char *value)
 495         {
 496         if (!value)
 497                 {
 498                 RSAerr(RSA_F_PKEY_RSA_CTRL_STR, RSA_R_VALUE_MISSING);
 499                 return 0;
 500                 }
 501         if (!strcmp(type, "rsa_padding_mode"))
 502                 {
 503                 int pm;
 504                 if (!strcmp(value, "pkcs1"))
 505                         pm = RSA_PKCS1_PADDING;
 506                 else if (!strcmp(value, "sslv23"))
 507                         pm = RSA_SSLV23_PADDING;
 508                 else if (!strcmp(value, "none"))
 509                         pm = RSA_NO_PADDING;
 510                 else if (!strcmp(value, "oeap"))
 511                         pm = RSA_PKCS1_OAEP_PADDING;
 512                 else if (!strcmp(value, "x931"))
 513                         pm = RSA_X931_PADDING;
 514                 else if (!strcmp(value, "pss"))
 515                         pm = RSA_PKCS1_PSS_PADDING;
 516                 else
 517                         {
 518                         RSAerr(RSA_F_PKEY_RSA_CTRL_STR,
 519                                                 RSA_R_UNKNOWN_PADDING_TYPE);
 520                         return -2;
 521                         }
 522                 return EVP_PKEY_CTX_set_rsa_padding(ctx, pm);
 523                 }
 524
 525         if (!strcmp(type, "rsa_pss_saltlen"))
 526                 {
 527                 int saltlen;
 528                 saltlen = atoi(value);
 529                 return EVP_PKEY_CTX_set_rsa_pss_saltlen(ctx, saltlen);
 530                 }
 531
 532         if (!strcmp(type, "rsa_keygen_bits"))
 533                 {
 534                 int nbits;
 535                 nbits = atoi(value);
 536                 return EVP_PKEY_CTX_set_rsa_keygen_bits(ctx, nbits);
 537                 }
 538
 539         if (!strcmp(type, "rsa_keygen_pubexp"))
 540                 {
 541                 int ret;
 542                 BIGNUM *pubexp = NULL;
 543                 if (!BN_asc2bn(&pubexp, value))
 544                         return 0;
 545                 ret = EVP_PKEY_CTX_set_rsa_keygen_pubexp(ctx, pubexp);
 546                 if (ret <= 0)
 547                         BN_free(pubexp);
 548                 return ret;
 549                 }
 550
 551         return -2;
 552         }
 553
 554 static int pkey_rsa_keygen(EVP_PKEY_CTX *ctx, EVP_PKEY *pkey)
 555         {
 556         RSA *rsa = NULL;
 557         RSA_PKEY_CTX *rctx = ctx->data;
 558         BN_GENCB *pcb, cb;
 559         int ret;
 560         if (!rctx->pub_exp)
 561                 {
 562                 rctx->pub_exp = BN_new();
 563                 if (!rctx->pub_exp || !BN_set_word(rctx->pub_exp, RSA_F4))
 564                         return 0;
 565                 }
 566         rsa = RSA_new();
 567         if (!rsa)
 568                 return 0;
 569         if (ctx->pkey_gencb)
 570                 {
 571                 pcb = &cb;
 572                 evp_pkey_set_cb_translate(pcb, ctx);
 573                 }
 574         else
 575                 pcb = NULL;
 576         ret = RSA_generate_key_ex(rsa, rctx->nbits, rctx->pub_exp, pcb);
 577         if (ret > 0)
 578                 EVP_PKEY_assign_RSA(pkey, rsa);
 579         else
 580                 RSA_free(rsa);
 581         return ret;
 582         }
 583
 584 const EVP_PKEY_METHOD rsa_pkey_meth =
 585         {
 586         EVP_PKEY_RSA,
 587         EVP_PKEY_FLAG_AUTOARGLEN,
 588         pkey_rsa_init,
 589         pkey_rsa_copy,
 590         pkey_rsa_cleanup,
 591
 592         0,0,
 593
 594         0,
 595         pkey_rsa_keygen,
 596
 597         0,
 598         pkey_rsa_sign,
 599
 600         0,
 601         pkey_rsa_verify,
 602
 603         0,
 604         pkey_rsa_verifyrecover,
 605
 606
 607         0,0,0,0,
 608
 609         0,
 610         pkey_rsa_encrypt,
 611
 612         0,
 613         pkey_rsa_decrypt,
 614
 615         0,0,
 616
 617         pkey_rsa_ctrl,
 618         pkey_rsa_ctrl_str
 619
 620
 621         };