include/linux/crypto.h

   1 /*
   2  * Scatterlist Cryptographic API.
   3  *
   4  * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
   5  * Copyright (c) 2002 David S. Miller (davem@redhat.com)
   6  * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
   7  *
   8  * Portions derived from Cryptoapi, by Alexander Kjeldaas <astor@fast.no>
   9  * and Nettle, by Niels Möller.
  10  *
  11  * This program is free software; you can redistribute it and/or modify it
  12  * under the terms of the GNU General Public License as published by the Free
  13  * Software Foundation; either version 2 of the License, or (at your option)
  14  * any later version.
  15  *
  16  */
  17 #ifndef _LINUX_CRYPTO_H
  18 #define _LINUX_CRYPTO_H
  19
  20 #include <asm/atomic.h>
  21 #include <linux/module.h>
  22 #include <linux/kernel.h>
  23 #include <linux/list.h>
  24 #include <linux/slab.h>
  25 #include <linux/string.h>
  26 #include <linux/uaccess.h>
  27
  28 /*
  29  * Algorithm masks and types.
  30  */
  31 #define CRYPTO_ALG_TYPE_MASK            0x0000000f
  32 #define CRYPTO_ALG_TYPE_CIPHER          0x00000001
  33 #define CRYPTO_ALG_TYPE_COMPRESS        0x00000002
  34 #define CRYPTO_ALG_TYPE_AEAD            0x00000003
  35 #define CRYPTO_ALG_TYPE_BLKCIPHER       0x00000004
  36 #define CRYPTO_ALG_TYPE_ABLKCIPHER      0x00000005
  37 #define CRYPTO_ALG_TYPE_GIVCIPHER       0x00000006
  38 #define CRYPTO_ALG_TYPE_DIGEST          0x00000008
  39 #define CRYPTO_ALG_TYPE_HASH            0x00000009
  40 #define CRYPTO_ALG_TYPE_AHASH           0x0000000a
  41 #define CRYPTO_ALG_TYPE_RNG             0x0000000c
  42
  43 #define CRYPTO_ALG_TYPE_HASH_MASK       0x0000000e
  44 #define CRYPTO_ALG_TYPE_AHASH_MASK      0x0000000c
  45 #define CRYPTO_ALG_TYPE_BLKCIPHER_MASK  0x0000000c
  46
  47 #define CRYPTO_ALG_LARVAL               0x00000010
  48 #define CRYPTO_ALG_DEAD                 0x00000020
  49 #define CRYPTO_ALG_DYING                0x00000040
  50 #define CRYPTO_ALG_ASYNC                0x00000080
  51
  52 /*
  53  * Set this bit if and only if the algorithm requires another algorithm of
  54  * the same type to handle corner cases.
  55  */
  56 #define CRYPTO_ALG_NEED_FALLBACK        0x00000100
  57
  58 /*
  59  * This bit is set for symmetric key ciphers that have already been wrapped
  60  * with a generic IV generator to prevent them from being wrapped again.
  61  */
  62 #define CRYPTO_ALG_GENIV                0x00000200
  63
  64 /*
  65  * Set if the algorithm has passed automated run-time testing.  Note that
  66  * if there is no run-time testing for a given algorithm it is considered
  67  * to have passed.
  68  */
  69
  70 #define CRYPTO_ALG_TESTED               0x00000400
  71
  72 /*
  73  * Transform masks and values (for crt_flags).
  74  */
  75 #define CRYPTO_TFM_REQ_MASK             0x000fff00
  76 #define CRYPTO_TFM_RES_MASK             0xfff00000
  77
  78 #define CRYPTO_TFM_REQ_WEAK_KEY         0x00000100
  79 #define CRYPTO_TFM_REQ_MAY_SLEEP        0x00000200
  80 #define CRYPTO_TFM_REQ_MAY_BACKLOG      0x00000400
  81 #define CRYPTO_TFM_RES_WEAK_KEY         0x00100000
  82 #define CRYPTO_TFM_RES_BAD_KEY_LEN      0x00200000
  83 #define CRYPTO_TFM_RES_BAD_KEY_SCHED    0x00400000
  84 #define CRYPTO_TFM_RES_BAD_BLOCK_LEN    0x00800000
  85 #define CRYPTO_TFM_RES_BAD_FLAGS        0x01000000
  86
  87 /*
  88  * Miscellaneous stuff.
  89  */
  90 #define CRYPTO_MAX_ALG_NAME             64
  91
  92 /*
  93  * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
  94  * declaration) is used to ensure that the crypto_tfm context structure is
  95  * aligned correctly for the given architecture so that there are no alignment
  96  * faults for C data types.  In particular, this is required on platforms such
  97  * as arm where pointers are 32-bit aligned but there are data types such as
  98  * u64 which require 64-bit alignment.
  99  */
 100 #if defined(ARCH_KMALLOC_MINALIGN)
 101 #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
 102 #elif defined(ARCH_SLAB_MINALIGN)
 103 #define CRYPTO_MINALIGN ARCH_SLAB_MINALIGN
 104 #else
 105 #define CRYPTO_MINALIGN __alignof__(unsigned long long)
 106 #endif
 107
 108 #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
 109
 110 struct scatterlist;
 111 struct crypto_ablkcipher;
 112 struct crypto_async_request;
 113 struct crypto_aead;
 114 struct crypto_blkcipher;
 115 struct crypto_hash;
 116 struct crypto_ahash;
 117 struct crypto_rng;
 118 struct crypto_tfm;
 119 struct crypto_type;
 120 struct aead_givcrypt_request;
 121 struct skcipher_givcrypt_request;
 122
 123 typedef void (*crypto_completion_t)(struct crypto_async_request *req, int err);
 124
 125 struct crypto_async_request {
 126         struct list_head list;
 127         crypto_completion_t complete;
 128         void *data;
 129         struct crypto_tfm *tfm;
 130
 131         u32 flags;
 132 };
 133
 134 struct ablkcipher_request {
 135         struct crypto_async_request base;
 136
 137         unsigned int nbytes;
 138
 139         void *info;
 140
 141         struct scatterlist *src;
 142         struct scatterlist *dst;
 143
 144         void *__ctx[] CRYPTO_MINALIGN_ATTR;
 145 };
 146
 147 struct ahash_request {
 148         struct crypto_async_request base;
 149
 150         unsigned int nbytes;
 151         struct scatterlist *src;
 152         u8                 *result;
 153
 154         void *__ctx[] CRYPTO_MINALIGN_ATTR;
 155 };
 156
 157 /**
 158  *      struct aead_request - AEAD request
 159  *      @base: Common attributes for async crypto requests
 160  *      @assoclen: Length in bytes of associated data for authentication
 161  *      @cryptlen: Length of data to be encrypted or decrypted
 162  *      @iv: Initialisation vector
 163  *      @assoc: Associated data
 164  *      @src: Source data
 165  *      @dst: Destination data
 166  *      @__ctx: Start of private context data
 167  */
 168 struct aead_request {
 169         struct crypto_async_request base;
 170
 171         unsigned int assoclen;
 172         unsigned int cryptlen;
 173
 174         u8 *iv;
 175
 176         struct scatterlist *assoc;
 177         struct scatterlist *src;
 178         struct scatterlist *dst;
 179
 180         void *__ctx[] CRYPTO_MINALIGN_ATTR;
 181 };
 182
 183 struct blkcipher_desc {
 184         struct crypto_blkcipher *tfm;
 185         void *info;
 186         u32 flags;
 187 };
 188
 189 struct cipher_desc {
 190         struct crypto_tfm *tfm;
 191         void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
 192         unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
 193                              const u8 *src, unsigned int nbytes);
 194         void *info;
 195 };
 196
 197 struct hash_desc {
 198         struct crypto_hash *tfm;
 199         u32 flags;
 200 };
 201
 202 /*
 203  * Algorithms: modular crypto algorithm implementations, managed
 204  * via crypto_register_alg() and crypto_unregister_alg().
 205  */
 206 struct ablkcipher_alg {
 207         int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
 208                       unsigned int keylen);
 209         int (*encrypt)(struct ablkcipher_request *req);
 210         int (*decrypt)(struct ablkcipher_request *req);
 211         int (*givencrypt)(struct skcipher_givcrypt_request *req);
 212         int (*givdecrypt)(struct skcipher_givcrypt_request *req);
 213
 214         const char *geniv;
 215
 216         unsigned int min_keysize;
 217         unsigned int max_keysize;
 218         unsigned int ivsize;
 219 };
 220
 221 struct ahash_alg {
 222         int (*init)(struct ahash_request *req);
 223         int (*update)(struct ahash_request *req);
 224         int (*final)(struct ahash_request *req);
 225         int (*digest)(struct ahash_request *req);
 226         int (*setkey)(struct crypto_ahash *tfm, const u8 *key,
 227                         unsigned int keylen);
 228
 229         unsigned int digestsize;
 230 };
 231
 232 struct aead_alg {
 233         int (*setkey)(struct crypto_aead *tfm, const u8 *key,
 234                       unsigned int keylen);
 235         int (*setauthsize)(struct crypto_aead *tfm, unsigned int authsize);
 236         int (*encrypt)(struct aead_request *req);
 237         int (*decrypt)(struct aead_request *req);
 238         int (*givencrypt)(struct aead_givcrypt_request *req);
 239         int (*givdecrypt)(struct aead_givcrypt_request *req);
 240
 241         const char *geniv;
 242
 243         unsigned int ivsize;
 244         unsigned int maxauthsize;
 245 };
 246
 247 struct blkcipher_alg {
 248         int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
 249                       unsigned int keylen);
 250         int (*encrypt)(struct blkcipher_desc *desc,
 251                        struct scatterlist *dst, struct scatterlist *src,
 252                        unsigned int nbytes);
 253         int (*decrypt)(struct blkcipher_desc *desc,
 254                        struct scatterlist *dst, struct scatterlist *src,
 255                        unsigned int nbytes);
 256
 257         const char *geniv;
 258
 259         unsigned int min_keysize;
 260         unsigned int max_keysize;
 261         unsigned int ivsize;
 262 };
 263
 264 struct cipher_alg {
 265         unsigned int cia_min_keysize;
 266         unsigned int cia_max_keysize;
 267         int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
 268                           unsigned int keylen);
 269         void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
 270         void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
 271 };
 272
 273 struct digest_alg {
 274         unsigned int dia_digestsize;
 275         void (*dia_init)(struct crypto_tfm *tfm);
 276         void (*dia_update)(struct crypto_tfm *tfm, const u8 *data,
 277                            unsigned int len);
 278         void (*dia_final)(struct crypto_tfm *tfm, u8 *out);
 279         int (*dia_setkey)(struct crypto_tfm *tfm, const u8 *key,
 280                           unsigned int keylen);
 281 };
 282
 283 struct hash_alg {
 284         int (*init)(struct hash_desc *desc);
 285         int (*update)(struct hash_desc *desc, struct scatterlist *sg,
 286                       unsigned int nbytes);
 287         int (*final)(struct hash_desc *desc, u8 *out);
 288         int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
 289                       unsigned int nbytes, u8 *out);
 290         int (*setkey)(struct crypto_hash *tfm, const u8 *key,
 291                       unsigned int keylen);
 292
 293         unsigned int digestsize;
 294 };
 295
 296 struct compress_alg {
 297         int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
 298                             unsigned int slen, u8 *dst, unsigned int *dlen);
 299         int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
 300                               unsigned int slen, u8 *dst, unsigned int *dlen);
 301 };
 302
 303 struct rng_alg {
 304         int (*rng_make_random)(struct crypto_rng *tfm, u8 *rdata,
 305                                unsigned int dlen);
 306         int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen);
 307
 308         unsigned int seedsize;
 309 };
 310
 311
 312 #define cra_ablkcipher  cra_u.ablkcipher
 313 #define cra_aead        cra_u.aead
 314 #define cra_blkcipher   cra_u.blkcipher
 315 #define cra_cipher      cra_u.cipher
 316 #define cra_digest      cra_u.digest
 317 #define cra_hash        cra_u.hash
 318 #define cra_ahash       cra_u.ahash
 319 #define cra_compress    cra_u.compress
 320 #define cra_rng         cra_u.rng
 321
 322 struct crypto_alg {
 323         struct list_head cra_list;
 324         struct list_head cra_users;
 325
 326         u32 cra_flags;
 327         unsigned int cra_blocksize;
 328         unsigned int cra_ctxsize;
 329         unsigned int cra_alignmask;
 330
 331         int cra_priority;
 332         atomic_t cra_refcnt;
 333
 334         char cra_name[CRYPTO_MAX_ALG_NAME];
 335         char cra_driver_name[CRYPTO_MAX_ALG_NAME];
 336
 337         const struct crypto_type *cra_type;
 338
 339         union {
 340                 struct ablkcipher_alg ablkcipher;
 341                 struct aead_alg aead;
 342                 struct blkcipher_alg blkcipher;
 343                 struct cipher_alg cipher;
 344                 struct digest_alg digest;
 345                 struct hash_alg hash;
 346                 struct ahash_alg ahash;
 347                 struct compress_alg compress;
 348                 struct rng_alg rng;
 349         } cra_u;
 350
 351         int (*cra_init)(struct crypto_tfm *tfm);
 352         void (*cra_exit)(struct crypto_tfm *tfm);
 353         void (*cra_destroy)(struct crypto_alg *alg);
 354
 355         struct module *cra_module;
 356 };
 357
 358 /*
 359  * Algorithm registration interface.
 360  */
 361 int crypto_register_alg(struct crypto_alg *alg);
 362 int crypto_unregister_alg(struct crypto_alg *alg);
 363
 364 /*
 365  * Algorithm query interface.
 366  */
 367 int crypto_has_alg(const char *name, u32 type, u32 mask);
 368
 369 /*
 370  * Transforms: user-instantiated objects which encapsulate algorithms
 371  * and core processing logic.  Managed via crypto_alloc_*() and
 372  * crypto_free_*(), as well as the various helpers below.
 373  */
 374
 375 struct ablkcipher_tfm {
 376         int (*setkey)(struct crypto_ablkcipher *tfm, const u8 *key,
 377                       unsigned int keylen);
 378         int (*encrypt)(struct ablkcipher_request *req);
 379         int (*decrypt)(struct ablkcipher_request *req);
 380         int (*givencrypt)(struct skcipher_givcrypt_request *req);
 381         int (*givdecrypt)(struct skcipher_givcrypt_request *req);
 382
 383         struct crypto_ablkcipher *base;
 384
 385         unsigned int ivsize;
 386         unsigned int reqsize;
 387 };
 388
 389 struct aead_tfm {
 390         int (*setkey)(struct crypto_aead *tfm, const u8 *key,
 391                       unsigned int keylen);
 392         int (*encrypt)(struct aead_request *req);
 393         int (*decrypt)(struct aead_request *req);
 394         int (*givencrypt)(struct aead_givcrypt_request *req);
 395         int (*givdecrypt)(struct aead_givcrypt_request *req);
 396
 397         struct crypto_aead *base;
 398
 399         unsigned int ivsize;
 400         unsigned int authsize;
 401         unsigned int reqsize;
 402 };
 403
 404 struct blkcipher_tfm {
 405         void *iv;
 406         int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
 407                       unsigned int keylen);
 408         int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
 409                        struct scatterlist *src, unsigned int nbytes);
 410         int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
 411                        struct scatterlist *src, unsigned int nbytes);
 412 };
 413
 414 struct cipher_tfm {
 415         int (*cit_setkey)(struct crypto_tfm *tfm,
 416                           const u8 *key, unsigned int keylen);
 417         void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
 418         void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
 419 };
 420
 421 struct hash_tfm {
 422         int (*init)(struct hash_desc *desc);
 423         int (*update)(struct hash_desc *desc,
 424                       struct scatterlist *sg, unsigned int nsg);
 425         int (*final)(struct hash_desc *desc, u8 *out);
 426         int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
 427                       unsigned int nsg, u8 *out);
 428         int (*setkey)(struct crypto_hash *tfm, const u8 *key,
 429                       unsigned int keylen);
 430         unsigned int digestsize;
 431 };
 432
 433 struct ahash_tfm {
 434         int (*init)(struct ahash_request *req);
 435         int (*update)(struct ahash_request *req);
 436         int (*final)(struct ahash_request *req);
 437         int (*digest)(struct ahash_request *req);
 438         int (*setkey)(struct crypto_ahash *tfm, const u8 *key,
 439                         unsigned int keylen);
 440
 441         unsigned int digestsize;
 442         unsigned int reqsize;
 443 };
 444
 445 struct compress_tfm {
 446         int (*cot_compress)(struct crypto_tfm *tfm,
 447                             const u8 *src, unsigned int slen,
 448                             u8 *dst, unsigned int *dlen);
 449         int (*cot_decompress)(struct crypto_tfm *tfm,
 450                               const u8 *src, unsigned int slen,
 451                               u8 *dst, unsigned int *dlen);
 452 };
 453
 454 struct rng_tfm {
 455         int (*rng_gen_random)(struct crypto_rng *tfm, u8 *rdata,
 456                               unsigned int dlen);
 457         int (*rng_reset)(struct crypto_rng *tfm, u8 *seed, unsigned int slen);
 458 };
 459
 460 #define crt_ablkcipher  crt_u.ablkcipher
 461 #define crt_aead        crt_u.aead
 462 #define crt_blkcipher   crt_u.blkcipher
 463 #define crt_cipher      crt_u.cipher
 464 #define crt_hash        crt_u.hash
 465 #define crt_ahash       crt_u.ahash
 466 #define crt_compress    crt_u.compress
 467 #define crt_rng         crt_u.rng
 468
 469 struct crypto_tfm {
 470
 471         u32 crt_flags;
 472
 473         union {
 474                 struct ablkcipher_tfm ablkcipher;
 475                 struct aead_tfm aead;
 476                 struct blkcipher_tfm blkcipher;
 477                 struct cipher_tfm cipher;
 478                 struct hash_tfm hash;
 479                 struct ahash_tfm ahash;
 480                 struct compress_tfm compress;
 481                 struct rng_tfm rng;
 482         } crt_u;
 483
 484         struct crypto_alg *__crt_alg;
 485
 486         void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
 487 };
 488
 489 struct crypto_ablkcipher {
 490         struct crypto_tfm base;
 491 };
 492
 493 struct crypto_aead {
 494         struct crypto_tfm base;
 495 };
 496
 497 struct crypto_blkcipher {
 498         struct crypto_tfm base;
 499 };
 500
 501 struct crypto_cipher {
 502         struct crypto_tfm base;
 503 };
 504
 505 struct crypto_comp {
 506         struct crypto_tfm base;
 507 };
 508
 509 struct crypto_hash {
 510         struct crypto_tfm base;
 511 };
 512
 513 struct crypto_rng {
 514         struct crypto_tfm base;
 515 };
 516
 517 enum {
 518         CRYPTOA_UNSPEC,
 519         CRYPTOA_ALG,
 520         CRYPTOA_TYPE,
 521         CRYPTOA_U32,
 522         __CRYPTOA_MAX,
 523 };
 524
 525 #define CRYPTOA_MAX (__CRYPTOA_MAX - 1)
 526
 527 /* Maximum number of (rtattr) parameters for each template. */
 528 #define CRYPTO_MAX_ATTRS 32
 529
 530 struct crypto_attr_alg {
 531         char name[CRYPTO_MAX_ALG_NAME];
 532 };
 533
 534 struct crypto_attr_type {
 535         u32 type;
 536         u32 mask;
 537 };
 538
 539 struct crypto_attr_u32 {
 540         u32 num;
 541 };
 542
 543 /*
 544  * Transform user interface.
 545  */
 546
 547 struct crypto_tfm *crypto_alloc_tfm(const char *alg_name, u32 tfm_flags);
 548 struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
 549 void crypto_free_tfm(struct crypto_tfm *tfm);
 550
 551 int alg_test(const char *driver, const char *alg, u32 type, u32 mask);
 552
 553 /*
 554  * Transform helpers which query the underlying algorithm.
 555  */
 556 static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
 557 {
 558         return tfm->__crt_alg->cra_name;
 559 }
 560
 561 static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
 562 {
 563         return tfm->__crt_alg->cra_driver_name;
 564 }
 565
 566 static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
 567 {
 568         return tfm->__crt_alg->cra_priority;
 569 }
 570
 571 static inline const char *crypto_tfm_alg_modname(struct crypto_tfm *tfm)
 572 {
 573         return module_name(tfm->__crt_alg->cra_module);
 574 }
 575
 576 static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
 577 {
 578         return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
 579 }
 580
 581 static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
 582 {
 583         return tfm->__crt_alg->cra_blocksize;
 584 }
 585
 586 static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
 587 {
 588         return tfm->__crt_alg->cra_alignmask;
 589 }
 590
 591 static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
 592 {
 593         return tfm->crt_flags;
 594 }
 595
 596 static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
 597 {
 598         tfm->crt_flags |= flags;
 599 }
 600
 601 static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
 602 {
 603         tfm->crt_flags &= ~flags;
 604 }
 605
 606 static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
 607 {
 608         return tfm->__crt_ctx;
 609 }
 610
 611 static inline unsigned int crypto_tfm_ctx_alignment(void)
 612 {
 613         struct crypto_tfm *tfm;
 614         return __alignof__(tfm->__crt_ctx);
 615 }
 616
 617 /*
 618  * API wrappers.
 619  */
 620 static inline struct crypto_ablkcipher *__crypto_ablkcipher_cast(
 621         struct crypto_tfm *tfm)
 622 {
 623         return (struct crypto_ablkcipher *)tfm;
 624 }
 625
 626 static inline u32 crypto_skcipher_type(u32 type)
 627 {
 628         type &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
 629         type |= CRYPTO_ALG_TYPE_BLKCIPHER;
 630         return type;
 631 }
 632
 633 static inline u32 crypto_skcipher_mask(u32 mask)
 634 {
 635         mask &= ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV);
 636         mask |= CRYPTO_ALG_TYPE_BLKCIPHER_MASK;
 637         return mask;
 638 }
 639
 640 struct crypto_ablkcipher *crypto_alloc_ablkcipher(const char *alg_name,
 641                                                   u32 type, u32 mask);
 642
 643 static inline struct crypto_tfm *crypto_ablkcipher_tfm(
 644         struct crypto_ablkcipher *tfm)
 645 {
 646         return &tfm->base;
 647 }
 648
 649 static inline void crypto_free_ablkcipher(struct crypto_ablkcipher *tfm)
 650 {
 651         crypto_free_tfm(crypto_ablkcipher_tfm(tfm));
 652 }
 653
 654 static inline int crypto_has_ablkcipher(const char *alg_name, u32 type,
 655                                         u32 mask)
 656 {
 657         return crypto_has_alg(alg_name, crypto_skcipher_type(type),
 658                               crypto_skcipher_mask(mask));
 659 }
 660
 661 static inline struct ablkcipher_tfm *crypto_ablkcipher_crt(
 662         struct crypto_ablkcipher *tfm)
 663 {
 664         return &crypto_ablkcipher_tfm(tfm)->crt_ablkcipher;
 665 }
 666
 667 static inline unsigned int crypto_ablkcipher_ivsize(
 668         struct crypto_ablkcipher *tfm)
 669 {
 670         return crypto_ablkcipher_crt(tfm)->ivsize;
 671 }
 672
 673 static inline unsigned int crypto_ablkcipher_blocksize(
 674         struct crypto_ablkcipher *tfm)
 675 {
 676         return crypto_tfm_alg_blocksize(crypto_ablkcipher_tfm(tfm));
 677 }
 678
 679 static inline unsigned int crypto_ablkcipher_alignmask(
 680         struct crypto_ablkcipher *tfm)
 681 {
 682         return crypto_tfm_alg_alignmask(crypto_ablkcipher_tfm(tfm));
 683 }
 684
 685 static inline u32 crypto_ablkcipher_get_flags(struct crypto_ablkcipher *tfm)
 686 {
 687         return crypto_tfm_get_flags(crypto_ablkcipher_tfm(tfm));
 688 }
 689
 690 static inline void crypto_ablkcipher_set_flags(struct crypto_ablkcipher *tfm,
 691                                                u32 flags)
 692 {
 693         crypto_tfm_set_flags(crypto_ablkcipher_tfm(tfm), flags);
 694 }
 695
 696 static inline void crypto_ablkcipher_clear_flags(struct crypto_ablkcipher *tfm,
 697                                                  u32 flags)
 698 {
 699         crypto_tfm_clear_flags(crypto_ablkcipher_tfm(tfm), flags);
 700 }
 701
 702 static inline int crypto_ablkcipher_setkey(struct crypto_ablkcipher *tfm,
 703                                            const u8 *key, unsigned int keylen)
 704 {
 705         struct ablkcipher_tfm *crt = crypto_ablkcipher_crt(tfm);
 706
 707         return crt->setkey(crt->base, key, keylen);
 708 }
 709
 710 static inline struct crypto_ablkcipher *crypto_ablkcipher_reqtfm(
 711         struct ablkcipher_request *req)
 712 {
 713         return __crypto_ablkcipher_cast(req->base.tfm);
 714 }
 715
 716 static inline int crypto_ablkcipher_encrypt(struct ablkcipher_request *req)
 717 {
 718         struct ablkcipher_tfm *crt =
 719                 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
 720         return crt->encrypt(req);
 721 }
 722
 723 static inline int crypto_ablkcipher_decrypt(struct ablkcipher_request *req)
 724 {
 725         struct ablkcipher_tfm *crt =
 726                 crypto_ablkcipher_crt(crypto_ablkcipher_reqtfm(req));
 727         return crt->decrypt(req);
 728 }
 729
 730 static inline unsigned int crypto_ablkcipher_reqsize(
 731         struct crypto_ablkcipher *tfm)
 732 {
 733         return crypto_ablkcipher_crt(tfm)->reqsize;
 734 }
 735
 736 static inline void ablkcipher_request_set_tfm(
 737         struct ablkcipher_request *req, struct crypto_ablkcipher *tfm)
 738 {
 739         req->base.tfm = crypto_ablkcipher_tfm(crypto_ablkcipher_crt(tfm)->base);
 740 }
 741
 742 static inline struct ablkcipher_request *ablkcipher_request_cast(
 743         struct crypto_async_request *req)
 744 {
 745         return container_of(req, struct ablkcipher_request, base);
 746 }
 747
 748 static inline struct ablkcipher_request *ablkcipher_request_alloc(
 749         struct crypto_ablkcipher *tfm, gfp_t gfp)
 750 {
 751         struct ablkcipher_request *req;
 752
 753         req = kmalloc(sizeof(struct ablkcipher_request) +
 754                       crypto_ablkcipher_reqsize(tfm), gfp);
 755
 756         if (likely(req))
 757                 ablkcipher_request_set_tfm(req, tfm);
 758
 759         return req;
 760 }
 761
 762 static inline void ablkcipher_request_free(struct ablkcipher_request *req)
 763 {
 764         kfree(req);
 765 }
 766
 767 static inline void ablkcipher_request_set_callback(
 768         struct ablkcipher_request *req,
 769         u32 flags, crypto_completion_t complete, void *data)
 770 {
 771         req->base.complete = complete;
 772         req->base.data = data;
 773         req->base.flags = flags;
 774 }
 775
 776 static inline void ablkcipher_request_set_crypt(
 777         struct ablkcipher_request *req,
 778         struct scatterlist *src, struct scatterlist *dst,
 779         unsigned int nbytes, void *iv)
 780 {
 781         req->src = src;
 782         req->dst = dst;
 783         req->nbytes = nbytes;
 784         req->info = iv;
 785 }
 786
 787 static inline struct crypto_aead *__crypto_aead_cast(struct crypto_tfm *tfm)
 788 {
 789         return (struct crypto_aead *)tfm;
 790 }
 791
 792 struct crypto_aead *crypto_alloc_aead(const char *alg_name, u32 type, u32 mask);
 793
 794 static inline struct crypto_tfm *crypto_aead_tfm(struct crypto_aead *tfm)
 795 {
 796         return &tfm->base;
 797 }
 798
 799 static inline void crypto_free_aead(struct crypto_aead *tfm)
 800 {
 801         crypto_free_tfm(crypto_aead_tfm(tfm));
 802 }
 803
 804 static inline struct aead_tfm *crypto_aead_crt(struct crypto_aead *tfm)
 805 {
 806         return &crypto_aead_tfm(tfm)->crt_aead;
 807 }
 808
 809 static inline unsigned int crypto_aead_ivsize(struct crypto_aead *tfm)
 810 {
 811         return crypto_aead_crt(tfm)->ivsize;
 812 }
 813
 814 static inline unsigned int crypto_aead_authsize(struct crypto_aead *tfm)
 815 {
 816         return crypto_aead_crt(tfm)->authsize;
 817 }
 818
 819 static inline unsigned int crypto_aead_blocksize(struct crypto_aead *tfm)
 820 {
 821         return crypto_tfm_alg_blocksize(crypto_aead_tfm(tfm));
 822 }
 823
 824 static inline unsigned int crypto_aead_alignmask(struct crypto_aead *tfm)
 825 {
 826         return crypto_tfm_alg_alignmask(crypto_aead_tfm(tfm));
 827 }
 828
 829 static inline u32 crypto_aead_get_flags(struct crypto_aead *tfm)
 830 {
 831         return crypto_tfm_get_flags(crypto_aead_tfm(tfm));
 832 }
 833
 834 static inline void crypto_aead_set_flags(struct crypto_aead *tfm, u32 flags)
 835 {
 836         crypto_tfm_set_flags(crypto_aead_tfm(tfm), flags);
 837 }
 838
 839 static inline void crypto_aead_clear_flags(struct crypto_aead *tfm, u32 flags)
 840 {
 841         crypto_tfm_clear_flags(crypto_aead_tfm(tfm), flags);
 842 }
 843
 844 static inline int crypto_aead_setkey(struct crypto_aead *tfm, const u8 *key,
 845                                      unsigned int keylen)
 846 {
 847         struct aead_tfm *crt = crypto_aead_crt(tfm);
 848
 849         return crt->setkey(crt->base, key, keylen);
 850 }
 851
 852 int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize);
 853
 854 static inline struct crypto_aead *crypto_aead_reqtfm(struct aead_request *req)
 855 {
 856         return __crypto_aead_cast(req->base.tfm);
 857 }
 858
 859 static inline int crypto_aead_encrypt(struct aead_request *req)
 860 {
 861         return crypto_aead_crt(crypto_aead_reqtfm(req))->encrypt(req);
 862 }
 863
 864 static inline int crypto_aead_decrypt(struct aead_request *req)
 865 {
 866         return crypto_aead_crt(crypto_aead_reqtfm(req))->decrypt(req);
 867 }
 868
 869 static inline unsigned int crypto_aead_reqsize(struct crypto_aead *tfm)
 870 {
 871         return crypto_aead_crt(tfm)->reqsize;
 872 }
 873
 874 static inline void aead_request_set_tfm(struct aead_request *req,
 875                                         struct crypto_aead *tfm)
 876 {
 877         req->base.tfm = crypto_aead_tfm(crypto_aead_crt(tfm)->base);
 878 }
 879
 880 static inline struct aead_request *aead_request_alloc(struct crypto_aead *tfm,
 881                                                       gfp_t gfp)
 882 {
 883         struct aead_request *req;
 884
 885         req = kmalloc(sizeof(*req) + crypto_aead_reqsize(tfm), gfp);
 886
 887         if (likely(req))
 888                 aead_request_set_tfm(req, tfm);
 889
 890         return req;
 891 }
 892
 893 static inline void aead_request_free(struct aead_request *req)
 894 {
 895         kfree(req);
 896 }
 897
 898 static inline void aead_request_set_callback(struct aead_request *req,
 899                                              u32 flags,
 900                                              crypto_completion_t complete,
 901                                              void *data)
 902 {
 903         req->base.complete = complete;
 904         req->base.data = data;
 905         req->base.flags = flags;
 906 }
 907
 908 static inline void aead_request_set_crypt(struct aead_request *req,
 909                                           struct scatterlist *src,
 910                                           struct scatterlist *dst,
 911                                           unsigned int cryptlen, u8 *iv)
 912 {
 913         req->src = src;
 914         req->dst = dst;
 915         req->cryptlen = cryptlen;
 916         req->iv = iv;
 917 }
 918
 919 static inline void aead_request_set_assoc(struct aead_request *req,
 920                                           struct scatterlist *assoc,
 921                                           unsigned int assoclen)
 922 {
 923         req->assoc = assoc;
 924         req->assoclen = assoclen;
 925 }
 926
 927 static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
 928         struct crypto_tfm *tfm)
 929 {
 930         return (struct crypto_blkcipher *)tfm;
 931 }
 932
 933 static inline struct crypto_blkcipher *crypto_blkcipher_cast(
 934         struct crypto_tfm *tfm)
 935 {
 936         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
 937         return __crypto_blkcipher_cast(tfm);
 938 }
 939
 940 static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
 941         const char *alg_name, u32 type, u32 mask)
 942 {
 943         type &= ~CRYPTO_ALG_TYPE_MASK;
 944         type |= CRYPTO_ALG_TYPE_BLKCIPHER;
 945         mask |= CRYPTO_ALG_TYPE_MASK;
 946
 947         return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
 948 }
 949
 950 static inline struct crypto_tfm *crypto_blkcipher_tfm(
 951         struct crypto_blkcipher *tfm)
 952 {
 953         return &tfm->base;
 954 }
 955
 956 static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
 957 {
 958         crypto_free_tfm(crypto_blkcipher_tfm(tfm));
 959 }
 960
 961 static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
 962 {
 963         type &= ~CRYPTO_ALG_TYPE_MASK;
 964         type |= CRYPTO_ALG_TYPE_BLKCIPHER;
 965         mask |= CRYPTO_ALG_TYPE_MASK;
 966
 967         return crypto_has_alg(alg_name, type, mask);
 968 }
 969
 970 static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
 971 {
 972         return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
 973 }
 974
 975 static inline struct blkcipher_tfm *crypto_blkcipher_crt(
 976         struct crypto_blkcipher *tfm)
 977 {
 978         return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
 979 }
 980
 981 static inline struct blkcipher_alg *crypto_blkcipher_alg(
 982         struct crypto_blkcipher *tfm)
 983 {
 984         return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
 985 }
 986
 987 static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
 988 {
 989         return crypto_blkcipher_alg(tfm)->ivsize;
 990 }
 991
 992 static inline unsigned int crypto_blkcipher_blocksize(
 993         struct crypto_blkcipher *tfm)
 994 {
 995         return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
 996 }
 997
 998 static inline unsigned int crypto_blkcipher_alignmask(
 999         struct crypto_blkcipher *tfm)
1000 {
1001         return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
1002 }
1003
1004 static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
1005 {
1006         return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
1007 }
1008
1009 static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
1010                                               u32 flags)
1011 {
1012         crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
1013 }
1014
1015 static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
1016                                                 u32 flags)
1017 {
1018         crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
1019 }
1020
1021 static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
1022                                           const u8 *key, unsigned int keylen)
1023 {
1024         return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
1025                                                  key, keylen);
1026 }
1027
1028 static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
1029                                            struct scatterlist *dst,
1030                                            struct scatterlist *src,
1031                                            unsigned int nbytes)
1032 {
1033         desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
1034         return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
1035 }
1036
1037 static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
1038                                               struct scatterlist *dst,
1039                                               struct scatterlist *src,
1040                                               unsigned int nbytes)
1041 {
1042         return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
1043 }
1044
1045 static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
1046                                            struct scatterlist *dst,
1047                                            struct scatterlist *src,
1048                                            unsigned int nbytes)
1049 {
1050         desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
1051         return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
1052 }
1053
1054 static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
1055                                               struct scatterlist *dst,
1056                                               struct scatterlist *src,
1057                                               unsigned int nbytes)
1058 {
1059         return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
1060 }
1061
1062 static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
1063                                            const u8 *src, unsigned int len)
1064 {
1065         memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
1066 }
1067
1068 static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
1069                                            u8 *dst, unsigned int len)
1070 {
1071         memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
1072 }
1073
1074 static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
1075 {
1076         return (struct crypto_cipher *)tfm;
1077 }
1078
1079 static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
1080 {
1081         BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
1082         return __crypto_cipher_cast(tfm);
1083 }
1084
1085 static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
1086                                                         u32 type, u32 mask)
1087 {
1088         type &= ~CRYPTO_ALG_TYPE_MASK;
1089         type |= CRYPTO_ALG_TYPE_CIPHER;
1090         mask |= CRYPTO_ALG_TYPE_MASK;
1091
1092         return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
1093 }
1094
1095 static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
1096 {
1097         return &tfm->base;
1098 }
1099
1100 static inline void crypto_free_cipher(struct crypto_cipher *tfm)
1101 {
1102         crypto_free_tfm(crypto_cipher_tfm(tfm));
1103 }
1104
1105 static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask)
1106 {
1107         type &= ~CRYPTO_ALG_TYPE_MASK;
1108         type |= CRYPTO_ALG_TYPE_CIPHER;
1109         mask |= CRYPTO_ALG_TYPE_MASK;
1110
1111         return crypto_has_alg(alg_name, type, mask);
1112 }
1113
1114 static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
1115 {
1116         return &crypto_cipher_tfm(tfm)->crt_cipher;
1117 }
1118
1119 static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
1120 {
1121         return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
1122 }
1123
1124 static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
1125 {
1126         return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
1127 }
1128
1129 static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
1130 {
1131         return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
1132 }
1133
1134 static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
1135                                            u32 flags)
1136 {
1137         crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
1138 }
1139
1140 static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
1141                                              u32 flags)
1142 {
1143         crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
1144 }
1145
1146 static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
1147                                        const u8 *key, unsigned int keylen)
1148 {
1149         return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
1150                                                   key, keylen);
1151 }
1152
1153 static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
1154                                              u8 *dst, const u8 *src)
1155 {
1156         crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
1157                                                 dst, src);
1158 }
1159
1160 static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
1161                                              u8 *dst, const u8 *src)
1162 {
1163         crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
1164                                                 dst, src);
1165 }
1166
1167 static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
1168 {
1169         return (struct crypto_hash *)tfm;
1170 }
1171
1172 static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
1173 {
1174         BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
1175                CRYPTO_ALG_TYPE_HASH_MASK);
1176         return __crypto_hash_cast(tfm);
1177 }
1178
1179 static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name,
1180                                                     u32 type, u32 mask)
1181 {
1182         type &= ~CRYPTO_ALG_TYPE_MASK;
1183         mask &= ~CRYPTO_ALG_TYPE_MASK;
1184         type |= CRYPTO_ALG_TYPE_HASH;
1185         mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1186
1187         return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
1188 }
1189
1190 static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
1191 {
1192         return &tfm->base;
1193 }
1194
1195 static inline void crypto_free_hash(struct crypto_hash *tfm)
1196 {
1197         crypto_free_tfm(crypto_hash_tfm(tfm));
1198 }
1199
1200 static inline int crypto_has_hash(const char *alg_name, u32 type, u32 mask)
1201 {
1202         type &= ~CRYPTO_ALG_TYPE_MASK;
1203         mask &= ~CRYPTO_ALG_TYPE_MASK;
1204         type |= CRYPTO_ALG_TYPE_HASH;
1205         mask |= CRYPTO_ALG_TYPE_HASH_MASK;
1206
1207         return crypto_has_alg(alg_name, type, mask);
1208 }
1209
1210 static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
1211 {
1212         return &crypto_hash_tfm(tfm)->crt_hash;
1213 }
1214
1215 static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
1216 {
1217         return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
1218 }
1219
1220 static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
1221 {
1222         return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
1223 }
1224
1225 static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
1226 {
1227         return crypto_hash_crt(tfm)->digestsize;
1228 }
1229
1230 static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
1231 {
1232         return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
1233 }
1234
1235 static inline void crypto_hash_set_flags(struct crypto_hash *tfm, u32 flags)
1236 {
1237         crypto_tfm_set_flags(crypto_hash_tfm(tfm), flags);
1238 }
1239
1240 static inline void crypto_hash_clear_flags(struct crypto_hash *tfm, u32 flags)
1241 {
1242         crypto_tfm_clear_flags(crypto_hash_tfm(tfm), flags);
1243 }
1244
1245 static inline int crypto_hash_init(struct hash_desc *desc)
1246 {
1247         return crypto_hash_crt(desc->tfm)->init(desc);
1248 }
1249
1250 static inline int crypto_hash_update(struct hash_desc *desc,
1251                                      struct scatterlist *sg,
1252                                      unsigned int nbytes)
1253 {
1254         return crypto_hash_crt(desc->tfm)->update(desc, sg, nbytes);
1255 }
1256
1257 static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
1258 {
1259         return crypto_hash_crt(desc->tfm)->final(desc, out);
1260 }
1261
1262 static inline int crypto_hash_digest(struct hash_desc *desc,
1263                                      struct scatterlist *sg,
1264                                      unsigned int nbytes, u8 *out)
1265 {
1266         return crypto_hash_crt(desc->tfm)->digest(desc, sg, nbytes, out);
1267 }
1268
1269 static inline int crypto_hash_setkey(struct crypto_hash *hash,
1270                                      const u8 *key, unsigned int keylen)
1271 {
1272         return crypto_hash_crt(hash)->setkey(hash, key, keylen);
1273 }
1274
1275 static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
1276 {
1277         return (struct crypto_comp *)tfm;
1278 }
1279
1280 static inline struct crypto_comp *crypto_comp_cast(struct crypto_tfm *tfm)
1281 {
1282         BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) &
1283                CRYPTO_ALG_TYPE_MASK);
1284         return __crypto_comp_cast(tfm);
1285 }
1286
1287 static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name,
1288                                                     u32 type, u32 mask)
1289 {
1290         type &= ~CRYPTO_ALG_TYPE_MASK;
1291         type |= CRYPTO_ALG_TYPE_COMPRESS;
1292         mask |= CRYPTO_ALG_TYPE_MASK;
1293
1294         return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask));
1295 }
1296
1297 static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm)
1298 {
1299         return &tfm->base;
1300 }
1301
1302 static inline void crypto_free_comp(struct crypto_comp *tfm)
1303 {
1304         crypto_free_tfm(crypto_comp_tfm(tfm));
1305 }
1306
1307 static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask)
1308 {
1309         type &= ~CRYPTO_ALG_TYPE_MASK;
1310         type |= CRYPTO_ALG_TYPE_COMPRESS;
1311         mask |= CRYPTO_ALG_TYPE_MASK;
1312
1313         return crypto_has_alg(alg_name, type, mask);
1314 }
1315
1316 static inline const char *crypto_comp_name(struct crypto_comp *tfm)
1317 {
1318         return crypto_tfm_alg_name(crypto_comp_tfm(tfm));
1319 }
1320
1321 static inline struct compress_tfm *crypto_comp_crt(struct crypto_comp *tfm)
1322 {
1323         return &crypto_comp_tfm(tfm)->crt_compress;
1324 }
1325
1326 static inline int crypto_comp_compress(struct crypto_comp *tfm,
1327                                        const u8 *src, unsigned int slen,
1328                                        u8 *dst, unsigned int *dlen)
1329 {
1330         return crypto_comp_crt(tfm)->cot_compress(crypto_comp_tfm(tfm),
1331                                                   src, slen, dst, dlen);
1332 }
1333
1334 static inline int crypto_comp_decompress(struct crypto_comp *tfm,
1335                                          const u8 *src, unsigned int slen,
1336                                          u8 *dst, unsigned int *dlen)
1337 {
1338         return crypto_comp_crt(tfm)->cot_decompress(crypto_comp_tfm(tfm),
1339                                                     src, slen, dst, dlen);
1340 }
1341
1342 #endif  /* _LINUX_CRYPTO_H */
1343