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- /*
- * Scatterlist Cryptographic API.
- *
- * Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
- * Copyright (c) 2002 David S. Miller (davem@redhat.com)
- * Copyright (c) 2005 Herbert Xu <herbert@gondor.apana.org.au>
- *
- * Portions derived from Cryptoapi, by Alexander Kjeldaas <astor@fast.no>
- * and Nettle, by Niels Möller.
- *
- * This program is free software; you can redistribute it and/or modify it
- * under the terms of the GNU General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option)
- * any later version.
- *
- */
- #ifndef _LINUX_CRYPTO_H
- #define _LINUX_CRYPTO_H
- #include <asm/atomic.h>
- #include <linux/module.h>
- #include <linux/kernel.h>
- #include <linux/list.h>
- #include <linux/slab.h>
- #include <linux/string.h>
- #include <linux/uaccess.h>
- /*
- * Algorithm masks and types.
- */
- #define CRYPTO_ALG_TYPE_MASK 0x0000000f
- #define CRYPTO_ALG_TYPE_CIPHER 0x00000001
- #define CRYPTO_ALG_TYPE_DIGEST 0x00000002
- #define CRYPTO_ALG_TYPE_HASH 0x00000003
- #define CRYPTO_ALG_TYPE_BLKCIPHER 0x00000004
- #define CRYPTO_ALG_TYPE_COMPRESS 0x00000005
- #define CRYPTO_ALG_TYPE_HASH_MASK 0x0000000e
- #define CRYPTO_ALG_LARVAL 0x00000010
- #define CRYPTO_ALG_DEAD 0x00000020
- #define CRYPTO_ALG_DYING 0x00000040
- #define CRYPTO_ALG_ASYNC 0x00000080
- /*
- * Set this bit if and only if the algorithm requires another algorithm of
- * the same type to handle corner cases.
- */
- #define CRYPTO_ALG_NEED_FALLBACK 0x00000100
- /*
- * Transform masks and values (for crt_flags).
- */
- #define CRYPTO_TFM_REQ_MASK 0x000fff00
- #define CRYPTO_TFM_RES_MASK 0xfff00000
- #define CRYPTO_TFM_REQ_WEAK_KEY 0x00000100
- #define CRYPTO_TFM_REQ_MAY_SLEEP 0x00000200
- #define CRYPTO_TFM_RES_WEAK_KEY 0x00100000
- #define CRYPTO_TFM_RES_BAD_KEY_LEN 0x00200000
- #define CRYPTO_TFM_RES_BAD_KEY_SCHED 0x00400000
- #define CRYPTO_TFM_RES_BAD_BLOCK_LEN 0x00800000
- #define CRYPTO_TFM_RES_BAD_FLAGS 0x01000000
- /*
- * Miscellaneous stuff.
- */
- #define CRYPTO_MAX_ALG_NAME 64
- /*
- * The macro CRYPTO_MINALIGN_ATTR (along with the void * type in the actual
- * declaration) is used to ensure that the crypto_tfm context structure is
- * aligned correctly for the given architecture so that there are no alignment
- * faults for C data types. In particular, this is required on platforms such
- * as arm where pointers are 32-bit aligned but there are data types such as
- * u64 which require 64-bit alignment.
- */
- #if defined(ARCH_KMALLOC_MINALIGN)
- #define CRYPTO_MINALIGN ARCH_KMALLOC_MINALIGN
- #elif defined(ARCH_SLAB_MINALIGN)
- #define CRYPTO_MINALIGN ARCH_SLAB_MINALIGN
- #endif
- #ifdef CRYPTO_MINALIGN
- #define CRYPTO_MINALIGN_ATTR __attribute__ ((__aligned__(CRYPTO_MINALIGN)))
- #else
- #define CRYPTO_MINALIGN_ATTR
- #endif
- struct scatterlist;
- struct crypto_blkcipher;
- struct crypto_hash;
- struct crypto_tfm;
- struct crypto_type;
- struct blkcipher_desc {
- struct crypto_blkcipher *tfm;
- void *info;
- u32 flags;
- };
- struct cipher_desc {
- struct crypto_tfm *tfm;
- void (*crfn)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
- unsigned int (*prfn)(const struct cipher_desc *desc, u8 *dst,
- const u8 *src, unsigned int nbytes);
- void *info;
- };
- struct hash_desc {
- struct crypto_hash *tfm;
- u32 flags;
- };
- /*
- * Algorithms: modular crypto algorithm implementations, managed
- * via crypto_register_alg() and crypto_unregister_alg().
- */
- struct blkcipher_alg {
- int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
- unsigned int keylen);
- int (*encrypt)(struct blkcipher_desc *desc,
- struct scatterlist *dst, struct scatterlist *src,
- unsigned int nbytes);
- int (*decrypt)(struct blkcipher_desc *desc,
- struct scatterlist *dst, struct scatterlist *src,
- unsigned int nbytes);
- unsigned int min_keysize;
- unsigned int max_keysize;
- unsigned int ivsize;
- };
- struct cipher_alg {
- unsigned int cia_min_keysize;
- unsigned int cia_max_keysize;
- int (*cia_setkey)(struct crypto_tfm *tfm, const u8 *key,
- unsigned int keylen);
- void (*cia_encrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
- void (*cia_decrypt)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
- };
- struct digest_alg {
- unsigned int dia_digestsize;
- void (*dia_init)(struct crypto_tfm *tfm);
- void (*dia_update)(struct crypto_tfm *tfm, const u8 *data,
- unsigned int len);
- void (*dia_final)(struct crypto_tfm *tfm, u8 *out);
- int (*dia_setkey)(struct crypto_tfm *tfm, const u8 *key,
- unsigned int keylen);
- };
- struct hash_alg {
- int (*init)(struct hash_desc *desc);
- int (*update)(struct hash_desc *desc, struct scatterlist *sg,
- unsigned int nbytes);
- int (*final)(struct hash_desc *desc, u8 *out);
- int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
- unsigned int nbytes, u8 *out);
- int (*setkey)(struct crypto_hash *tfm, const u8 *key,
- unsigned int keylen);
- unsigned int digestsize;
- };
- struct compress_alg {
- int (*coa_compress)(struct crypto_tfm *tfm, const u8 *src,
- unsigned int slen, u8 *dst, unsigned int *dlen);
- int (*coa_decompress)(struct crypto_tfm *tfm, const u8 *src,
- unsigned int slen, u8 *dst, unsigned int *dlen);
- };
- #define cra_blkcipher cra_u.blkcipher
- #define cra_cipher cra_u.cipher
- #define cra_digest cra_u.digest
- #define cra_hash cra_u.hash
- #define cra_compress cra_u.compress
- struct crypto_alg {
- struct list_head cra_list;
- struct list_head cra_users;
- u32 cra_flags;
- unsigned int cra_blocksize;
- unsigned int cra_ctxsize;
- unsigned int cra_alignmask;
- int cra_priority;
- atomic_t cra_refcnt;
- char cra_name[CRYPTO_MAX_ALG_NAME];
- char cra_driver_name[CRYPTO_MAX_ALG_NAME];
- const struct crypto_type *cra_type;
- union {
- struct blkcipher_alg blkcipher;
- struct cipher_alg cipher;
- struct digest_alg digest;
- struct hash_alg hash;
- struct compress_alg compress;
- } cra_u;
- int (*cra_init)(struct crypto_tfm *tfm);
- void (*cra_exit)(struct crypto_tfm *tfm);
- void (*cra_destroy)(struct crypto_alg *alg);
-
- struct module *cra_module;
- };
- /*
- * Algorithm registration interface.
- */
- int crypto_register_alg(struct crypto_alg *alg);
- int crypto_unregister_alg(struct crypto_alg *alg);
- /*
- * Algorithm query interface.
- */
- #ifdef CONFIG_CRYPTO
- int crypto_has_alg(const char *name, u32 type, u32 mask);
- #else
- static inline int crypto_has_alg(const char *name, u32 type, u32 mask)
- {
- return 0;
- }
- #endif
- /*
- * Transforms: user-instantiated objects which encapsulate algorithms
- * and core processing logic. Managed via crypto_alloc_*() and
- * crypto_free_*(), as well as the various helpers below.
- */
- struct blkcipher_tfm {
- void *iv;
- int (*setkey)(struct crypto_tfm *tfm, const u8 *key,
- unsigned int keylen);
- int (*encrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes);
- int (*decrypt)(struct blkcipher_desc *desc, struct scatterlist *dst,
- struct scatterlist *src, unsigned int nbytes);
- };
- struct cipher_tfm {
- void *cit_iv;
- unsigned int cit_ivsize;
- u32 cit_mode;
- int (*cit_setkey)(struct crypto_tfm *tfm,
- const u8 *key, unsigned int keylen);
- int (*cit_encrypt)(struct crypto_tfm *tfm,
- struct scatterlist *dst,
- struct scatterlist *src,
- unsigned int nbytes);
- int (*cit_encrypt_iv)(struct crypto_tfm *tfm,
- struct scatterlist *dst,
- struct scatterlist *src,
- unsigned int nbytes, u8 *iv);
- int (*cit_decrypt)(struct crypto_tfm *tfm,
- struct scatterlist *dst,
- struct scatterlist *src,
- unsigned int nbytes);
- int (*cit_decrypt_iv)(struct crypto_tfm *tfm,
- struct scatterlist *dst,
- struct scatterlist *src,
- unsigned int nbytes, u8 *iv);
- void (*cit_xor_block)(u8 *dst, const u8 *src);
- void (*cit_encrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
- void (*cit_decrypt_one)(struct crypto_tfm *tfm, u8 *dst, const u8 *src);
- };
- struct hash_tfm {
- int (*init)(struct hash_desc *desc);
- int (*update)(struct hash_desc *desc,
- struct scatterlist *sg, unsigned int nsg);
- int (*final)(struct hash_desc *desc, u8 *out);
- int (*digest)(struct hash_desc *desc, struct scatterlist *sg,
- unsigned int nsg, u8 *out);
- int (*setkey)(struct crypto_hash *tfm, const u8 *key,
- unsigned int keylen);
- unsigned int digestsize;
- };
- struct compress_tfm {
- int (*cot_compress)(struct crypto_tfm *tfm,
- const u8 *src, unsigned int slen,
- u8 *dst, unsigned int *dlen);
- int (*cot_decompress)(struct crypto_tfm *tfm,
- const u8 *src, unsigned int slen,
- u8 *dst, unsigned int *dlen);
- };
- #define crt_blkcipher crt_u.blkcipher
- #define crt_cipher crt_u.cipher
- #define crt_hash crt_u.hash
- #define crt_compress crt_u.compress
- struct crypto_tfm {
- u32 crt_flags;
-
- union {
- struct blkcipher_tfm blkcipher;
- struct cipher_tfm cipher;
- struct hash_tfm hash;
- struct compress_tfm compress;
- } crt_u;
-
- struct crypto_alg *__crt_alg;
- void *__crt_ctx[] CRYPTO_MINALIGN_ATTR;
- };
- struct crypto_blkcipher {
- struct crypto_tfm base;
- };
- struct crypto_cipher {
- struct crypto_tfm base;
- };
- struct crypto_comp {
- struct crypto_tfm base;
- };
- struct crypto_hash {
- struct crypto_tfm base;
- };
- enum {
- CRYPTOA_UNSPEC,
- CRYPTOA_ALG,
- };
- struct crypto_attr_alg {
- char name[CRYPTO_MAX_ALG_NAME];
- };
- /*
- * Transform user interface.
- */
-
- struct crypto_tfm *crypto_alloc_tfm(const char *alg_name, u32 tfm_flags);
- struct crypto_tfm *crypto_alloc_base(const char *alg_name, u32 type, u32 mask);
- void crypto_free_tfm(struct crypto_tfm *tfm);
- /*
- * Transform helpers which query the underlying algorithm.
- */
- static inline const char *crypto_tfm_alg_name(struct crypto_tfm *tfm)
- {
- return tfm->__crt_alg->cra_name;
- }
- static inline const char *crypto_tfm_alg_driver_name(struct crypto_tfm *tfm)
- {
- return tfm->__crt_alg->cra_driver_name;
- }
- static inline int crypto_tfm_alg_priority(struct crypto_tfm *tfm)
- {
- return tfm->__crt_alg->cra_priority;
- }
- static inline const char *crypto_tfm_alg_modname(struct crypto_tfm *tfm)
- {
- return module_name(tfm->__crt_alg->cra_module);
- }
- static inline u32 crypto_tfm_alg_type(struct crypto_tfm *tfm)
- {
- return tfm->__crt_alg->cra_flags & CRYPTO_ALG_TYPE_MASK;
- }
- static inline unsigned int crypto_tfm_alg_blocksize(struct crypto_tfm *tfm)
- {
- return tfm->__crt_alg->cra_blocksize;
- }
- static inline unsigned int crypto_tfm_alg_alignmask(struct crypto_tfm *tfm)
- {
- return tfm->__crt_alg->cra_alignmask;
- }
- static inline u32 crypto_tfm_get_flags(struct crypto_tfm *tfm)
- {
- return tfm->crt_flags;
- }
- static inline void crypto_tfm_set_flags(struct crypto_tfm *tfm, u32 flags)
- {
- tfm->crt_flags |= flags;
- }
- static inline void crypto_tfm_clear_flags(struct crypto_tfm *tfm, u32 flags)
- {
- tfm->crt_flags &= ~flags;
- }
- static inline void *crypto_tfm_ctx(struct crypto_tfm *tfm)
- {
- return tfm->__crt_ctx;
- }
- static inline unsigned int crypto_tfm_ctx_alignment(void)
- {
- struct crypto_tfm *tfm;
- return __alignof__(tfm->__crt_ctx);
- }
- /*
- * API wrappers.
- */
- static inline struct crypto_blkcipher *__crypto_blkcipher_cast(
- struct crypto_tfm *tfm)
- {
- return (struct crypto_blkcipher *)tfm;
- }
- static inline struct crypto_blkcipher *crypto_blkcipher_cast(
- struct crypto_tfm *tfm)
- {
- BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_BLKCIPHER);
- return __crypto_blkcipher_cast(tfm);
- }
- static inline struct crypto_blkcipher *crypto_alloc_blkcipher(
- const char *alg_name, u32 type, u32 mask)
- {
- type &= ~CRYPTO_ALG_TYPE_MASK;
- type |= CRYPTO_ALG_TYPE_BLKCIPHER;
- mask |= CRYPTO_ALG_TYPE_MASK;
- return __crypto_blkcipher_cast(crypto_alloc_base(alg_name, type, mask));
- }
- static inline struct crypto_tfm *crypto_blkcipher_tfm(
- struct crypto_blkcipher *tfm)
- {
- return &tfm->base;
- }
- static inline void crypto_free_blkcipher(struct crypto_blkcipher *tfm)
- {
- crypto_free_tfm(crypto_blkcipher_tfm(tfm));
- }
- static inline int crypto_has_blkcipher(const char *alg_name, u32 type, u32 mask)
- {
- type &= ~CRYPTO_ALG_TYPE_MASK;
- type |= CRYPTO_ALG_TYPE_BLKCIPHER;
- mask |= CRYPTO_ALG_TYPE_MASK;
- return crypto_has_alg(alg_name, type, mask);
- }
- static inline const char *crypto_blkcipher_name(struct crypto_blkcipher *tfm)
- {
- return crypto_tfm_alg_name(crypto_blkcipher_tfm(tfm));
- }
- static inline struct blkcipher_tfm *crypto_blkcipher_crt(
- struct crypto_blkcipher *tfm)
- {
- return &crypto_blkcipher_tfm(tfm)->crt_blkcipher;
- }
- static inline struct blkcipher_alg *crypto_blkcipher_alg(
- struct crypto_blkcipher *tfm)
- {
- return &crypto_blkcipher_tfm(tfm)->__crt_alg->cra_blkcipher;
- }
- static inline unsigned int crypto_blkcipher_ivsize(struct crypto_blkcipher *tfm)
- {
- return crypto_blkcipher_alg(tfm)->ivsize;
- }
- static inline unsigned int crypto_blkcipher_blocksize(
- struct crypto_blkcipher *tfm)
- {
- return crypto_tfm_alg_blocksize(crypto_blkcipher_tfm(tfm));
- }
- static inline unsigned int crypto_blkcipher_alignmask(
- struct crypto_blkcipher *tfm)
- {
- return crypto_tfm_alg_alignmask(crypto_blkcipher_tfm(tfm));
- }
- static inline u32 crypto_blkcipher_get_flags(struct crypto_blkcipher *tfm)
- {
- return crypto_tfm_get_flags(crypto_blkcipher_tfm(tfm));
- }
- static inline void crypto_blkcipher_set_flags(struct crypto_blkcipher *tfm,
- u32 flags)
- {
- crypto_tfm_set_flags(crypto_blkcipher_tfm(tfm), flags);
- }
- static inline void crypto_blkcipher_clear_flags(struct crypto_blkcipher *tfm,
- u32 flags)
- {
- crypto_tfm_clear_flags(crypto_blkcipher_tfm(tfm), flags);
- }
- static inline int crypto_blkcipher_setkey(struct crypto_blkcipher *tfm,
- const u8 *key, unsigned int keylen)
- {
- return crypto_blkcipher_crt(tfm)->setkey(crypto_blkcipher_tfm(tfm),
- key, keylen);
- }
- static inline int crypto_blkcipher_encrypt(struct blkcipher_desc *desc,
- struct scatterlist *dst,
- struct scatterlist *src,
- unsigned int nbytes)
- {
- desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
- return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
- }
- static inline int crypto_blkcipher_encrypt_iv(struct blkcipher_desc *desc,
- struct scatterlist *dst,
- struct scatterlist *src,
- unsigned int nbytes)
- {
- return crypto_blkcipher_crt(desc->tfm)->encrypt(desc, dst, src, nbytes);
- }
- static inline int crypto_blkcipher_decrypt(struct blkcipher_desc *desc,
- struct scatterlist *dst,
- struct scatterlist *src,
- unsigned int nbytes)
- {
- desc->info = crypto_blkcipher_crt(desc->tfm)->iv;
- return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
- }
- static inline int crypto_blkcipher_decrypt_iv(struct blkcipher_desc *desc,
- struct scatterlist *dst,
- struct scatterlist *src,
- unsigned int nbytes)
- {
- return crypto_blkcipher_crt(desc->tfm)->decrypt(desc, dst, src, nbytes);
- }
- static inline void crypto_blkcipher_set_iv(struct crypto_blkcipher *tfm,
- const u8 *src, unsigned int len)
- {
- memcpy(crypto_blkcipher_crt(tfm)->iv, src, len);
- }
- static inline void crypto_blkcipher_get_iv(struct crypto_blkcipher *tfm,
- u8 *dst, unsigned int len)
- {
- memcpy(dst, crypto_blkcipher_crt(tfm)->iv, len);
- }
- static inline struct crypto_cipher *__crypto_cipher_cast(struct crypto_tfm *tfm)
- {
- return (struct crypto_cipher *)tfm;
- }
- static inline struct crypto_cipher *crypto_cipher_cast(struct crypto_tfm *tfm)
- {
- BUG_ON(crypto_tfm_alg_type(tfm) != CRYPTO_ALG_TYPE_CIPHER);
- return __crypto_cipher_cast(tfm);
- }
- static inline struct crypto_cipher *crypto_alloc_cipher(const char *alg_name,
- u32 type, u32 mask)
- {
- type &= ~CRYPTO_ALG_TYPE_MASK;
- type |= CRYPTO_ALG_TYPE_CIPHER;
- mask |= CRYPTO_ALG_TYPE_MASK;
- return __crypto_cipher_cast(crypto_alloc_base(alg_name, type, mask));
- }
- static inline struct crypto_tfm *crypto_cipher_tfm(struct crypto_cipher *tfm)
- {
- return &tfm->base;
- }
- static inline void crypto_free_cipher(struct crypto_cipher *tfm)
- {
- crypto_free_tfm(crypto_cipher_tfm(tfm));
- }
- static inline int crypto_has_cipher(const char *alg_name, u32 type, u32 mask)
- {
- type &= ~CRYPTO_ALG_TYPE_MASK;
- type |= CRYPTO_ALG_TYPE_CIPHER;
- mask |= CRYPTO_ALG_TYPE_MASK;
- return crypto_has_alg(alg_name, type, mask);
- }
- static inline struct cipher_tfm *crypto_cipher_crt(struct crypto_cipher *tfm)
- {
- return &crypto_cipher_tfm(tfm)->crt_cipher;
- }
- static inline unsigned int crypto_cipher_blocksize(struct crypto_cipher *tfm)
- {
- return crypto_tfm_alg_blocksize(crypto_cipher_tfm(tfm));
- }
- static inline unsigned int crypto_cipher_alignmask(struct crypto_cipher *tfm)
- {
- return crypto_tfm_alg_alignmask(crypto_cipher_tfm(tfm));
- }
- static inline u32 crypto_cipher_get_flags(struct crypto_cipher *tfm)
- {
- return crypto_tfm_get_flags(crypto_cipher_tfm(tfm));
- }
- static inline void crypto_cipher_set_flags(struct crypto_cipher *tfm,
- u32 flags)
- {
- crypto_tfm_set_flags(crypto_cipher_tfm(tfm), flags);
- }
- static inline void crypto_cipher_clear_flags(struct crypto_cipher *tfm,
- u32 flags)
- {
- crypto_tfm_clear_flags(crypto_cipher_tfm(tfm), flags);
- }
- static inline int crypto_cipher_setkey(struct crypto_cipher *tfm,
- const u8 *key, unsigned int keylen)
- {
- return crypto_cipher_crt(tfm)->cit_setkey(crypto_cipher_tfm(tfm),
- key, keylen);
- }
- static inline void crypto_cipher_encrypt_one(struct crypto_cipher *tfm,
- u8 *dst, const u8 *src)
- {
- crypto_cipher_crt(tfm)->cit_encrypt_one(crypto_cipher_tfm(tfm),
- dst, src);
- }
- static inline void crypto_cipher_decrypt_one(struct crypto_cipher *tfm,
- u8 *dst, const u8 *src)
- {
- crypto_cipher_crt(tfm)->cit_decrypt_one(crypto_cipher_tfm(tfm),
- dst, src);
- }
- static inline struct crypto_hash *__crypto_hash_cast(struct crypto_tfm *tfm)
- {
- return (struct crypto_hash *)tfm;
- }
- static inline struct crypto_hash *crypto_hash_cast(struct crypto_tfm *tfm)
- {
- BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_HASH) &
- CRYPTO_ALG_TYPE_HASH_MASK);
- return __crypto_hash_cast(tfm);
- }
- static inline struct crypto_hash *crypto_alloc_hash(const char *alg_name,
- u32 type, u32 mask)
- {
- type &= ~CRYPTO_ALG_TYPE_MASK;
- type |= CRYPTO_ALG_TYPE_HASH;
- mask |= CRYPTO_ALG_TYPE_HASH_MASK;
- return __crypto_hash_cast(crypto_alloc_base(alg_name, type, mask));
- }
- static inline struct crypto_tfm *crypto_hash_tfm(struct crypto_hash *tfm)
- {
- return &tfm->base;
- }
- static inline void crypto_free_hash(struct crypto_hash *tfm)
- {
- crypto_free_tfm(crypto_hash_tfm(tfm));
- }
- static inline int crypto_has_hash(const char *alg_name, u32 type, u32 mask)
- {
- type &= ~CRYPTO_ALG_TYPE_MASK;
- type |= CRYPTO_ALG_TYPE_HASH;
- mask |= CRYPTO_ALG_TYPE_HASH_MASK;
- return crypto_has_alg(alg_name, type, mask);
- }
- static inline struct hash_tfm *crypto_hash_crt(struct crypto_hash *tfm)
- {
- return &crypto_hash_tfm(tfm)->crt_hash;
- }
- static inline unsigned int crypto_hash_blocksize(struct crypto_hash *tfm)
- {
- return crypto_tfm_alg_blocksize(crypto_hash_tfm(tfm));
- }
- static inline unsigned int crypto_hash_alignmask(struct crypto_hash *tfm)
- {
- return crypto_tfm_alg_alignmask(crypto_hash_tfm(tfm));
- }
- static inline unsigned int crypto_hash_digestsize(struct crypto_hash *tfm)
- {
- return crypto_hash_crt(tfm)->digestsize;
- }
- static inline u32 crypto_hash_get_flags(struct crypto_hash *tfm)
- {
- return crypto_tfm_get_flags(crypto_hash_tfm(tfm));
- }
- static inline void crypto_hash_set_flags(struct crypto_hash *tfm, u32 flags)
- {
- crypto_tfm_set_flags(crypto_hash_tfm(tfm), flags);
- }
- static inline void crypto_hash_clear_flags(struct crypto_hash *tfm, u32 flags)
- {
- crypto_tfm_clear_flags(crypto_hash_tfm(tfm), flags);
- }
- static inline int crypto_hash_init(struct hash_desc *desc)
- {
- return crypto_hash_crt(desc->tfm)->init(desc);
- }
- static inline int crypto_hash_update(struct hash_desc *desc,
- struct scatterlist *sg,
- unsigned int nbytes)
- {
- return crypto_hash_crt(desc->tfm)->update(desc, sg, nbytes);
- }
- static inline int crypto_hash_final(struct hash_desc *desc, u8 *out)
- {
- return crypto_hash_crt(desc->tfm)->final(desc, out);
- }
- static inline int crypto_hash_digest(struct hash_desc *desc,
- struct scatterlist *sg,
- unsigned int nbytes, u8 *out)
- {
- return crypto_hash_crt(desc->tfm)->digest(desc, sg, nbytes, out);
- }
- static inline int crypto_hash_setkey(struct crypto_hash *hash,
- const u8 *key, unsigned int keylen)
- {
- return crypto_hash_crt(hash)->setkey(hash, key, keylen);
- }
- static inline struct crypto_comp *__crypto_comp_cast(struct crypto_tfm *tfm)
- {
- return (struct crypto_comp *)tfm;
- }
- static inline struct crypto_comp *crypto_comp_cast(struct crypto_tfm *tfm)
- {
- BUG_ON((crypto_tfm_alg_type(tfm) ^ CRYPTO_ALG_TYPE_COMPRESS) &
- CRYPTO_ALG_TYPE_MASK);
- return __crypto_comp_cast(tfm);
- }
- static inline struct crypto_comp *crypto_alloc_comp(const char *alg_name,
- u32 type, u32 mask)
- {
- type &= ~CRYPTO_ALG_TYPE_MASK;
- type |= CRYPTO_ALG_TYPE_COMPRESS;
- mask |= CRYPTO_ALG_TYPE_MASK;
- return __crypto_comp_cast(crypto_alloc_base(alg_name, type, mask));
- }
- static inline struct crypto_tfm *crypto_comp_tfm(struct crypto_comp *tfm)
- {
- return &tfm->base;
- }
- static inline void crypto_free_comp(struct crypto_comp *tfm)
- {
- crypto_free_tfm(crypto_comp_tfm(tfm));
- }
- static inline int crypto_has_comp(const char *alg_name, u32 type, u32 mask)
- {
- type &= ~CRYPTO_ALG_TYPE_MASK;
- type |= CRYPTO_ALG_TYPE_COMPRESS;
- mask |= CRYPTO_ALG_TYPE_MASK;
- return crypto_has_alg(alg_name, type, mask);
- }
- static inline const char *crypto_comp_name(struct crypto_comp *tfm)
- {
- return crypto_tfm_alg_name(crypto_comp_tfm(tfm));
- }
- static inline struct compress_tfm *crypto_comp_crt(struct crypto_comp *tfm)
- {
- return &crypto_comp_tfm(tfm)->crt_compress;
- }
- static inline int crypto_comp_compress(struct crypto_comp *tfm,
- const u8 *src, unsigned int slen,
- u8 *dst, unsigned int *dlen)
- {
- return crypto_comp_crt(tfm)->cot_compress(crypto_comp_tfm(tfm),
- src, slen, dst, dlen);
- }
- static inline int crypto_comp_decompress(struct crypto_comp *tfm,
- const u8 *src, unsigned int slen,
- u8 *dst, unsigned int *dlen)
- {
- return crypto_comp_crt(tfm)->cot_decompress(crypto_comp_tfm(tfm),
- src, slen, dst, dlen);
- }
- #endif /* _LINUX_CRYPTO_H */
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