lib/hcrypto/evp-cc.c

   1 /*
   2  * Copyright (c) 2008 Kungliga Tekniska Högskolan
   3  * (Royal Institute of Technology, Stockholm, Sweden).
   4  * All rights reserved.
   5  *
   6  * Portions Copyright (c) 2009 Apple Inc. 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 the
  17  *    documentation and/or other materials provided with the distribution.
  18  *
  19  * 3. Neither the name of the Institute nor the names of its contributors
  20  *    may be used to endorse or promote products derived from this software
  21  *    without specific prior written permission.
  22  *
  23  * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND
  24  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  25  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  26  * ARE DISCLAIMED.  IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE
  27  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  28  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  29  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  30  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  31  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  32  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  33  * SUCH DAMAGE.
  34  */
  35
  36 /* CommonCrypto provider */
  37
  38 #ifdef __APPLE__
  39
  40 #include "config.h"
  41
  42 #include <sys/types.h>
  43 #include <stdio.h>
  44 #include <stdlib.h>
  45 #include <string.h>
  46 #include <assert.h>
  47
  48 #ifdef HAVE_COMMONCRYPTO_COMMONDIGEST_H
  49 #include <CommonCrypto/CommonDigest.h>
  50 #endif
  51 #ifdef HAVE_COMMONCRYPTO_COMMONCRYPTOR_H
  52 #include <CommonCrypto/CommonCryptor.h>
  53 #endif
  54
  55 #include <evp.h>
  56 #include <evp-cc.h>
  57
  58 /*
  59  *
  60  */
  61
  62 #ifdef HAVE_COMMONCRYPTO_COMMONCRYPTOR_H
  63
  64 struct cc_key {
  65     CCCryptorRef href;
  66 };
  67
  68 static int
  69 cc_do_cipher(EVP_CIPHER_CTX *ctx,
  70              unsigned char *out,
  71              const unsigned char *in,
  72              unsigned int size)
  73 {
  74     struct cc_key *cc = ctx->cipher_data;
  75     CCCryptorStatus ret;
  76     size_t moved;
  77
  78     memcpy(out, in, size);
  79
  80     ret = CCCryptorUpdate(cc->href, in, size, out, size, &moved);
  81     if (ret)
  82         return 0;
  83
  84     if (moved != size)
  85         return 0;
  86
  87     return 1;
  88 }
  89
  90 static int
  91 cc_do_cfb8_cipher(EVP_CIPHER_CTX *ctx,
  92                   unsigned char *out,
  93                   const unsigned char *in,
  94                   unsigned int size)
  95 {
  96     struct cc_key *cc = ctx->cipher_data;
  97     CCCryptorStatus ret;
  98     size_t moved;
  99     unsigned int i;
 100
 101     for (i = 0; i < size; i++) {
 102         unsigned char oiv[EVP_MAX_IV_LENGTH + 1];
 103
 104         assert(ctx->cipher->iv_len + 1 <= sizeof(oiv));
 105         memcpy(oiv, ctx->iv, ctx->cipher->iv_len);
 106
 107         ret = CCCryptorUpdate(cc->href, ctx->iv, ctx->cipher->iv_len,
 108                               ctx->iv, ctx->cipher->iv_len, &moved);
 109         if (ret)
 110             return 0;
 111
 112         if (moved != ctx->cipher->iv_len)
 113             return 0;
 114
 115         if (!ctx->encrypt)
 116             oiv[ctx->cipher->iv_len] = in[i];
 117         out[i] = in[i] ^ ctx->iv[0];
 118         if (ctx->encrypt)
 119             oiv[ctx->cipher->iv_len] = out[i];
 120
 121         memcpy(ctx->iv, &oiv[1], ctx->cipher->iv_len);
 122     }
 123
 124     return 1;
 125 }
 126
 127 static int
 128 cc_cleanup(EVP_CIPHER_CTX *ctx)
 129 {
 130     struct cc_key *cc = ctx->cipher_data;
 131     if (cc->href)
 132         CCCryptorRelease(cc->href);
 133     return 1;
 134 }
 135
 136 static int
 137 init_cc_key(int encp, CCAlgorithm alg, CCOptions opts, const void *key,
 138             size_t keylen, const void *iv, CCCryptorRef *ref)
 139 {
 140     CCOperation op = encp ? kCCEncrypt : kCCDecrypt;
 141     CCCryptorStatus ret;
 142
 143     if (*ref) {
 144         if (key == NULL && iv) {
 145             CCCryptorReset(*ref, iv);
 146             return 1;
 147         }
 148         CCCryptorRelease(*ref);
 149     }
 150
 151     ret = CCCryptorCreate(op, alg, opts, key, keylen, iv, ref);
 152     if (ret)
 153         return 0;
 154     return 1;
 155 }
 156
 157 static int
 158 cc_des_ede3_cbc_init(EVP_CIPHER_CTX *ctx,
 159                      const unsigned char * key,
 160                      const unsigned char * iv,
 161                      int encp)
 162 {
 163     struct cc_key *cc = ctx->cipher_data;
 164     return init_cc_key(encp, kCCAlgorithm3DES, 0, key, kCCKeySize3DES, iv, &cc->href);
 165 }
 166
 167 #endif /* HAVE_COMMONCRYPTO_COMMONCRYPTOR_H */
 168
 169 /**
 170  * The tripple DES cipher type (Apple CommonCrypto provider)
 171  *
 172  * @return the DES-EDE3-CBC EVP_CIPHER pointer.
 173  *
 174  * @ingroup hcrypto_evp
 175  */
 176
 177 const EVP_CIPHER *
 178 EVP_cc_des_ede3_cbc(void)
 179 {
 180 #ifdef HAVE_COMMONCRYPTO_COMMONCRYPTOR_H
 181     static const EVP_CIPHER des_ede3_cbc = {
 182         0,
 183         8,
 184         24,
 185         8,
 186         EVP_CIPH_CBC_MODE|EVP_CIPH_ALWAYS_CALL_INIT,
 187         cc_des_ede3_cbc_init,
 188         cc_do_cipher,
 189         cc_cleanup,
 190         sizeof(struct cc_key),
 191         NULL,
 192         NULL,
 193         NULL,
 194         NULL
 195     };
 196     return &des_ede3_cbc;
 197 #else
 198     return NULL;
 199 #endif
 200 }
 201
 202 #ifdef HAVE_COMMONCRYPTO_COMMONCRYPTOR_H
 203 /*
 204  *
 205  */
 206
 207 static int
 208 cc_des_cbc_init(EVP_CIPHER_CTX *ctx,
 209                 const unsigned char * key,
 210                 const unsigned char * iv,
 211                 int encp)
 212 {
 213     struct cc_key *cc = ctx->cipher_data;
 214     return init_cc_key(encp, kCCAlgorithmDES, 0, key, kCCBlockSizeDES, iv, &cc->href);
 215 }
 216 #endif
 217
 218 /**
 219  * The DES cipher type (Apple CommonCrypto provider)
 220  *
 221  * @return the DES-CBC EVP_CIPHER pointer.
 222  *
 223  * @ingroup hcrypto_evp
 224  */
 225
 226 const EVP_CIPHER *
 227 EVP_cc_des_cbc(void)
 228 {
 229 #ifdef HAVE_COMMONCRYPTO_COMMONCRYPTOR_H
 230     static const EVP_CIPHER des_ede3_cbc = {
 231         0,
 232         kCCBlockSizeDES,
 233         kCCBlockSizeDES,
 234         kCCBlockSizeDES,
 235         EVP_CIPH_CBC_MODE|EVP_CIPH_ALWAYS_CALL_INIT,
 236         cc_des_cbc_init,
 237         cc_do_cipher,
 238         cc_cleanup,
 239         sizeof(struct cc_key),
 240         NULL,
 241         NULL,
 242         NULL,
 243         NULL
 244     };
 245     return &des_ede3_cbc;
 246 #else
 247     return NULL;
 248 #endif
 249 }
 250
 251 #ifdef HAVE_COMMONCRYPTO_COMMONCRYPTOR_H
 252 /*
 253  *
 254  */
 255
 256 static int
 257 cc_aes_cbc_init(EVP_CIPHER_CTX *ctx,
 258                 const unsigned char * key,
 259                 const unsigned char * iv,
 260                 int encp)
 261 {
 262     struct cc_key *cc = ctx->cipher_data;
 263     return init_cc_key(encp, kCCAlgorithmAES128, 0, key, ctx->cipher->key_len, iv, &cc->href);
 264 }
 265 #endif
 266
 267 /**
 268  * The AES-128 cipher type (Apple CommonCrypto provider)
 269  *
 270  * @return the AES-128-CBC EVP_CIPHER pointer.
 271  *
 272  * @ingroup hcrypto_evp
 273  */
 274
 275 const EVP_CIPHER *
 276 EVP_cc_aes_128_cbc(void)
 277 {
 278 #ifdef HAVE_COMMONCRYPTO_COMMONCRYPTOR_H
 279     static const EVP_CIPHER c = {
 280         0,
 281         kCCBlockSizeAES128,
 282         kCCKeySizeAES128,
 283         kCCBlockSizeAES128,
 284         EVP_CIPH_CBC_MODE|EVP_CIPH_ALWAYS_CALL_INIT,
 285         cc_aes_cbc_init,
 286         cc_do_cipher,
 287         cc_cleanup,
 288         sizeof(struct cc_key),
 289         NULL,
 290         NULL,
 291         NULL,
 292         NULL
 293     };
 294     return &c;
 295 #else
 296     return NULL;
 297 #endif
 298 }
 299
 300 /**
 301  * The AES-192 cipher type (Apple CommonCrypto provider)
 302  *
 303  * @return the AES-192-CBC EVP_CIPHER pointer.
 304  *
 305  * @ingroup hcrypto_evp
 306  */
 307
 308 const EVP_CIPHER *
 309 EVP_cc_aes_192_cbc(void)
 310 {
 311 #ifdef HAVE_COMMONCRYPTO_COMMONCRYPTOR_H
 312     static const EVP_CIPHER c = {
 313         0,
 314         kCCBlockSizeAES128,
 315         kCCKeySizeAES192,
 316         kCCBlockSizeAES128,
 317         EVP_CIPH_CBC_MODE|EVP_CIPH_ALWAYS_CALL_INIT,
 318         cc_aes_cbc_init,
 319         cc_do_cipher,
 320         cc_cleanup,
 321         sizeof(struct cc_key),
 322         NULL,
 323         NULL,
 324         NULL,
 325         NULL
 326     };
 327     return &c;
 328 #else
 329     return NULL;
 330 #endif
 331 }
 332
 333 /**
 334  * The AES-256 cipher type (Apple CommonCrypto provider)
 335  *
 336  * @return the AES-256-CBC EVP_CIPHER pointer.
 337  *
 338  * @ingroup hcrypto_evp
 339  */
 340
 341 const EVP_CIPHER *
 342 EVP_cc_aes_256_cbc(void)
 343 {
 344 #ifdef HAVE_COMMONCRYPTO_COMMONCRYPTOR_H
 345     static const EVP_CIPHER c = {
 346         0,
 347         kCCBlockSizeAES128,
 348         kCCKeySizeAES256,
 349         kCCBlockSizeAES128,
 350         EVP_CIPH_CBC_MODE|EVP_CIPH_ALWAYS_CALL_INIT,
 351         cc_aes_cbc_init,
 352         cc_do_cipher,
 353         cc_cleanup,
 354         sizeof(struct cc_key),
 355         NULL,
 356         NULL,
 357         NULL,
 358         NULL
 359     };
 360     return &c;
 361 #else
 362     return NULL;
 363 #endif
 364 }
 365
 366 #ifdef HAVE_COMMONCRYPTO_COMMONCRYPTOR_H
 367 /*
 368  *
 369  */
 370
 371 static int
 372 cc_aes_cfb8_init(EVP_CIPHER_CTX *ctx,
 373                 const unsigned char * key,
 374                 const unsigned char * iv,
 375                 int encp)
 376 {
 377     struct cc_key *cc = ctx->cipher_data;
 378     memcpy(ctx->iv, iv, ctx->cipher->iv_len);
 379     return init_cc_key(1, kCCAlgorithmAES128, kCCOptionECBMode,
 380                        key, ctx->cipher->key_len, NULL, &cc->href);
 381 }
 382 #endif
 383
 384 /**
 385  * The AES-128 CFB8 cipher type (Apple CommonCrypto provider)
 386  *
 387  * @return the AES-128-CFB8 EVP_CIPHER pointer.
 388  *
 389  * @ingroup hcrypto_evp
 390  */
 391
 392 const EVP_CIPHER *
 393 EVP_cc_aes_128_cfb8(void)
 394 {
 395 #ifdef HAVE_COMMONCRYPTO_COMMONCRYPTOR_H
 396     static const EVP_CIPHER c = {
 397         0,
 398         1,
 399         kCCKeySizeAES128,
 400         kCCBlockSizeAES128,
 401         EVP_CIPH_CFB8_MODE|EVP_CIPH_ALWAYS_CALL_INIT,
 402         cc_aes_cfb8_init,
 403         cc_do_cfb8_cipher,
 404         cc_cleanup,
 405         sizeof(struct cc_key),
 406         NULL,
 407         NULL,
 408         NULL,
 409         NULL
 410     };
 411     return &c;
 412 #else
 413     return NULL;
 414 #endif
 415 }
 416
 417 /**
 418  * The AES-192 CFB8 cipher type (Apple CommonCrypto provider)
 419  *
 420  * @return the AES-192-CFB8 EVP_CIPHER pointer.
 421  *
 422  * @ingroup hcrypto_evp
 423  */
 424
 425 const EVP_CIPHER *
 426 EVP_cc_aes_192_cfb8(void)
 427 {
 428 #ifdef HAVE_COMMONCRYPTO_COMMONCRYPTOR_H
 429     static const EVP_CIPHER c = {
 430         0,
 431         1,
 432         kCCKeySizeAES192,
 433         kCCBlockSizeAES128,
 434         EVP_CIPH_CFB8_MODE|EVP_CIPH_ALWAYS_CALL_INIT,
 435         cc_aes_cfb8_init,
 436         cc_do_cfb8_cipher,
 437         cc_cleanup,
 438         sizeof(struct cc_key),
 439         NULL,
 440         NULL,
 441         NULL,
 442         NULL
 443     };
 444     return &c;
 445 #else
 446     return NULL;
 447 #endif
 448 }
 449
 450 /**
 451  * The AES-256 CFB8 cipher type (Apple CommonCrypto provider)
 452  *
 453  * @return the AES-256-CFB8 EVP_CIPHER pointer.
 454  *
 455  * @ingroup hcrypto_evp
 456  */
 457
 458 const EVP_CIPHER *
 459 EVP_cc_aes_256_cfb8(void)
 460 {
 461 #ifdef HAVE_COMMONCRYPTO_COMMONCRYPTOR_H
 462     static const EVP_CIPHER c = {
 463         0,
 464         kCCBlockSizeAES128,
 465         kCCKeySizeAES256,
 466         kCCBlockSizeAES128,
 467         EVP_CIPH_CFB8_MODE|EVP_CIPH_ALWAYS_CALL_INIT,
 468         cc_aes_cfb8_init,
 469         cc_do_cfb8_cipher,
 470         cc_cleanup,
 471         sizeof(struct cc_key),
 472         NULL,
 473         NULL,
 474         NULL,
 475         NULL
 476     };
 477     return &c;
 478 #else
 479     return NULL;
 480 #endif
 481 }
 482
 483 /*
 484  *
 485  */
 486
 487 #ifdef COMMONCRYPTO_SUPPORTS_RC2
 488 static int
 489 cc_rc2_cbc_init(EVP_CIPHER_CTX *ctx,
 490                 const unsigned char * key,
 491                 const unsigned char * iv,
 492                 int encp)
 493 {
 494     struct cc_key *cc = ctx->cipher_data;
 495     return init_cc_key(encp, kCCAlgorithmRC2, 0, key, ctx->cipher->key_len, iv, &cc->href);
 496 }
 497 #endif
 498
 499 /**
 500  * The RC2 cipher type - common crypto
 501  *
 502  * @return the RC2 EVP_CIPHER pointer.
 503  *
 504  * @ingroup hcrypto_evp
 505  */
 506
 507
 508 const EVP_CIPHER *
 509 EVP_cc_rc2_cbc(void)
 510 {
 511 #ifdef COMMONCRYPTO_SUPPORTS_RC2
 512     static const EVP_CIPHER rc2_cbc = {
 513         0,
 514         kCCBlockSizeRC2,
 515         16,
 516         kCCBlockSizeRC2,
 517         EVP_CIPH_CBC_MODE|EVP_CIPH_ALWAYS_CALL_INIT,
 518         cc_rc2_cbc_init,
 519         cc_do_cipher,
 520         cc_cleanup,
 521         sizeof(struct cc_key),
 522         NULL,
 523         NULL,
 524         NULL,
 525         NULL
 526     };
 527     return &rc2_cbc;
 528 #else
 529     return NULL;
 530 #endif
 531 }
 532
 533 /**
 534  * The RC2-40 cipher type - common crypto
 535  *
 536  * @return the RC2-40 EVP_CIPHER pointer.
 537  *
 538  * @ingroup hcrypto_evp
 539  */
 540
 541
 542 const EVP_CIPHER *
 543 EVP_cc_rc2_40_cbc(void)
 544 {
 545 #ifdef COMMONCRYPTO_SUPPORTS_RC2
 546     static const EVP_CIPHER rc2_40_cbc = {
 547         0,
 548         kCCBlockSizeRC2,
 549         5,
 550         kCCBlockSizeRC2,
 551         EVP_CIPH_CBC_MODE|EVP_CIPH_ALWAYS_CALL_INIT,
 552         cc_rc2_cbc_init,
 553         cc_do_cipher,
 554         cc_cleanup,
 555         sizeof(struct cc_key),
 556         NULL,
 557         NULL,
 558         NULL,
 559         NULL
 560     };
 561     return &rc2_40_cbc;
 562 #else
 563     return NULL;
 564 #endif
 565 }
 566
 567
 568 /**
 569  * The RC2-64 cipher type - common crypto
 570  *
 571  * @return the RC2-64 EVP_CIPHER pointer.
 572  *
 573  * @ingroup hcrypto_evp
 574  */
 575
 576
 577 const EVP_CIPHER *
 578 EVP_cc_rc2_64_cbc(void)
 579 {
 580 #ifdef COMMONCRYPTO_SUPPORTS_RC2
 581     static const EVP_CIPHER rc2_64_cbc = {
 582         0,
 583         kCCBlockSizeRC2,
 584         8,
 585         kCCBlockSizeRC2,
 586         EVP_CIPH_CBC_MODE|EVP_CIPH_ALWAYS_CALL_INIT,
 587         cc_rc2_cbc_init,
 588         cc_do_cipher,
 589         cc_cleanup,
 590         sizeof(struct cc_key),
 591         NULL,
 592         NULL,
 593         NULL,
 594         NULL
 595     };
 596     return &rc2_64_cbc;
 597 #else
 598     return NULL;
 599 #endif
 600 }
 601
 602 /**
 603  * The CommonCrypto md2 provider
 604  *
 605  * @ingroup hcrypto_evp
 606  */
 607
 608 const EVP_MD *
 609 EVP_cc_md2(void)
 610 {
 611 #ifdef HAVE_COMMONCRYPTO_COMMONDIGEST_H
 612     static const struct hc_evp_md md2 = {
 613         CC_MD2_DIGEST_LENGTH,
 614         CC_MD2_BLOCK_BYTES,
 615         sizeof(CC_MD2_CTX),
 616         (hc_evp_md_init)CC_MD2_Init,
 617         (hc_evp_md_update)CC_MD2_Update,
 618         (hc_evp_md_final)CC_MD2_Final,
 619         (hc_evp_md_cleanup)NULL
 620     };
 621     return &md2;
 622 #else
 623     return NULL;
 624 #endif
 625 }
 626
 627 /**
 628  * The CommonCrypto md4 provider
 629  *
 630  * @ingroup hcrypto_evp
 631  */
 632
 633 const EVP_MD *
 634 EVP_cc_md4(void)
 635 {
 636 #ifdef HAVE_COMMONCRYPTO_COMMONDIGEST_H
 637     static const struct hc_evp_md md4 = {
 638         CC_MD4_DIGEST_LENGTH,
 639         CC_MD4_BLOCK_BYTES,
 640         sizeof(CC_MD4_CTX),
 641         (hc_evp_md_init)CC_MD4_Init,
 642         (hc_evp_md_update)CC_MD4_Update,
 643         (hc_evp_md_final)CC_MD4_Final,
 644         (hc_evp_md_cleanup)NULL
 645     };
 646     return &md4;
 647 #else
 648     return NULL;
 649 #endif
 650 }
 651
 652 /**
 653  * The CommonCrypto md5 provider
 654  *
 655  * @ingroup hcrypto_evp
 656  */
 657
 658 const EVP_MD *
 659 EVP_cc_md5(void)
 660 {
 661 #ifdef HAVE_COMMONCRYPTO_COMMONDIGEST_H
 662     static const struct hc_evp_md md5 = {
 663         CC_MD5_DIGEST_LENGTH,
 664         CC_MD5_BLOCK_BYTES,
 665         sizeof(CC_MD5_CTX),
 666         (hc_evp_md_init)CC_MD5_Init,
 667         (hc_evp_md_update)CC_MD5_Update,
 668         (hc_evp_md_final)CC_MD5_Final,
 669         (hc_evp_md_cleanup)NULL
 670     };
 671     return &md5;
 672 #else
 673     return NULL;
 674 #endif
 675 }
 676
 677 /**
 678  * The CommonCrypto sha1 provider
 679  *
 680  * @ingroup hcrypto_evp
 681  */
 682
 683 const EVP_MD *
 684 EVP_cc_sha1(void)
 685 {
 686 #ifdef HAVE_COMMONCRYPTO_COMMONDIGEST_H
 687     static const struct hc_evp_md sha1 = {
 688         CC_SHA1_DIGEST_LENGTH,
 689         CC_SHA1_BLOCK_BYTES,
 690         sizeof(CC_SHA1_CTX),
 691         (hc_evp_md_init)CC_SHA1_Init,
 692         (hc_evp_md_update)CC_SHA1_Update,
 693         (hc_evp_md_final)CC_SHA1_Final,
 694         (hc_evp_md_cleanup)NULL
 695     };
 696     return &sha1;
 697 #else
 698     return NULL;
 699 #endif
 700 }
 701
 702 /**
 703  * The CommonCrypto sha256 provider
 704  *
 705  * @ingroup hcrypto_evp
 706  */
 707
 708 const EVP_MD *
 709 EVP_cc_sha256(void)
 710 {
 711 #ifdef HAVE_COMMONCRYPTO_COMMONDIGEST_H
 712     static const struct hc_evp_md sha256 = {
 713         CC_SHA256_DIGEST_LENGTH,
 714         CC_SHA256_BLOCK_BYTES,
 715         sizeof(CC_SHA256_CTX),
 716         (hc_evp_md_init)CC_SHA256_Init,
 717         (hc_evp_md_update)CC_SHA256_Update,
 718         (hc_evp_md_final)CC_SHA256_Final,
 719         (hc_evp_md_cleanup)NULL
 720     };
 721     return &sha256;
 722 #else
 723     return NULL;
 724 #endif
 725 }
 726
 727 /**
 728  * The Camellia-128 cipher type - CommonCrypto
 729  *
 730  * @return the Camellia-128 EVP_CIPHER pointer.
 731  *
 732  * @ingroup hcrypto_evp
 733  */
 734
 735 const EVP_CIPHER *
 736 EVP_cc_camellia_128_cbc(void)
 737 {
 738     return NULL;
 739 }
 740
 741 /**
 742  * The Camellia-198 cipher type - CommonCrypto
 743  *
 744  * @return the Camellia-198 EVP_CIPHER pointer.
 745  *
 746  * @ingroup hcrypto_evp
 747  */
 748
 749 const EVP_CIPHER *
 750 EVP_cc_camellia_192_cbc(void)
 751 {
 752     return NULL;
 753 }
 754
 755 /**
 756  * The Camellia-256 cipher type - CommonCrypto
 757  *
 758  * @return the Camellia-256 EVP_CIPHER pointer.
 759  *
 760  * @ingroup hcrypto_evp
 761  */
 762
 763 const EVP_CIPHER *
 764 EVP_cc_camellia_256_cbc(void)
 765 {
 766     return NULL;
 767 }
 768
 769 #ifdef HAVE_COMMONCRYPTO_COMMONCRYPTOR_H
 770
 771 /*
 772  *
 773  */
 774
 775 static int
 776 cc_rc4_init(EVP_CIPHER_CTX *ctx,
 777             const unsigned char * key,
 778             const unsigned char * iv,
 779             int encp)
 780 {
 781     struct cc_key *cc = ctx->cipher_data;
 782     return init_cc_key(encp, kCCAlgorithmRC4, 0, key, ctx->key_len, iv, &cc->href);
 783 }
 784
 785 #endif
 786
 787 /**
 788
 789  * The RC4 cipher type (Apple CommonCrypto provider)
 790  *
 791  * @return the RC4 EVP_CIPHER pointer.
 792  *
 793  * @ingroup hcrypto_evp
 794  */
 795
 796 const EVP_CIPHER *
 797 EVP_cc_rc4(void)
 798 {
 799 #ifdef HAVE_COMMONCRYPTO_COMMONCRYPTOR_H
 800     static const EVP_CIPHER rc4 = {
 801         0,
 802         1,
 803         16,
 804         0,
 805         EVP_CIPH_STREAM_CIPHER|EVP_CIPH_VARIABLE_LENGTH,
 806         cc_rc4_init,
 807         cc_do_cipher,
 808         cc_cleanup,
 809         sizeof(struct cc_key),
 810         NULL,
 811         NULL,
 812         NULL,
 813         NULL
 814     };
 815     return &rc4;
 816 #else
 817     return NULL;
 818 #endif
 819 }
 820
 821
 822 /**
 823  * The RC4-40 cipher type (Apple CommonCrypto provider)
 824  *
 825  * @return the RC4 EVP_CIPHER pointer.
 826  *
 827  * @ingroup hcrypto_evp
 828  */
 829
 830 const EVP_CIPHER *
 831 EVP_cc_rc4_40(void)
 832 {
 833 #ifdef HAVE_COMMONCRYPTO_COMMONCRYPTOR_H
 834     static const EVP_CIPHER rc4_40 = {
 835         0,
 836         1,
 837         5,
 838         0,
 839         EVP_CIPH_STREAM_CIPHER|EVP_CIPH_VARIABLE_LENGTH,
 840         cc_rc4_init,
 841         cc_do_cipher,
 842         cc_cleanup,
 843         sizeof(struct cc_key),
 844         NULL,
 845         NULL,
 846         NULL,
 847         NULL
 848     };
 849     return &rc4_40;
 850 #else
 851     return NULL;
 852 #endif
 853 }
 854
 855 #endif /* __APPLE__ */
 856