diff options
Diffstat (limited to 'include/crypto/hash.h')
| -rw-r--r-- | include/crypto/hash.h | 147 |
1 files changed, 99 insertions, 48 deletions
diff --git a/include/crypto/hash.h b/include/crypto/hash.h index d56bb71617c..26cb1eb16f4 100644 --- a/include/crypto/hash.h +++ b/include/crypto/hash.h @@ -15,6 +15,42 @@ #include <linux/crypto.h> +struct crypto_ahash; + +struct hash_alg_common { + unsigned int digestsize; + unsigned int statesize; + + struct crypto_alg base; +}; + +struct ahash_request { + struct crypto_async_request base; + + unsigned int nbytes; + struct scatterlist *src; + u8 *result; + + /* This field may only be used by the ahash API code. */ + void *priv; + + void *__ctx[] CRYPTO_MINALIGN_ATTR; +}; + +struct ahash_alg { + int (*init)(struct ahash_request *req); + int (*update)(struct ahash_request *req); + int (*final)(struct ahash_request *req); + int (*finup)(struct ahash_request *req); + int (*digest)(struct ahash_request *req); + int (*export)(struct ahash_request *req, void *out); + int (*import)(struct ahash_request *req, const void *in); + int (*setkey)(struct crypto_ahash *tfm, const u8 *key, + unsigned int keylen); + + struct hash_alg_common halg; +}; + struct shash_desc { struct crypto_shash *tfm; u32 flags; @@ -24,7 +60,6 @@ struct shash_desc { struct shash_alg { int (*init)(struct shash_desc *desc); - int (*reinit)(struct shash_desc *desc); int (*update)(struct shash_desc *desc, const u8 *data, unsigned int len); int (*final)(struct shash_desc *desc, u8 *out); @@ -32,38 +67,48 @@ struct shash_alg { unsigned int len, u8 *out); int (*digest)(struct shash_desc *desc, const u8 *data, unsigned int len, u8 *out); + int (*export)(struct shash_desc *desc, void *out); + int (*import)(struct shash_desc *desc, const void *in); int (*setkey)(struct crypto_shash *tfm, const u8 *key, unsigned int keylen); unsigned int descsize; - unsigned int digestsize; + + /* These fields must match hash_alg_common. */ + unsigned int digestsize + __attribute__ ((aligned(__alignof__(struct hash_alg_common)))); + unsigned int statesize; struct crypto_alg base; }; struct crypto_ahash { + int (*init)(struct ahash_request *req); + int (*update)(struct ahash_request *req); + int (*final)(struct ahash_request *req); + int (*finup)(struct ahash_request *req); + int (*digest)(struct ahash_request *req); + int (*export)(struct ahash_request *req, void *out); + int (*import)(struct ahash_request *req, const void *in); + int (*setkey)(struct crypto_ahash *tfm, const u8 *key, + unsigned int keylen); + + unsigned int reqsize; struct crypto_tfm base; }; struct crypto_shash { + unsigned int descsize; struct crypto_tfm base; }; static inline struct crypto_ahash *__crypto_ahash_cast(struct crypto_tfm *tfm) { - return (struct crypto_ahash *)tfm; + return container_of(tfm, struct crypto_ahash, base); } -static inline struct crypto_ahash *crypto_alloc_ahash(const char *alg_name, - u32 type, u32 mask) -{ - type &= ~CRYPTO_ALG_TYPE_MASK; - mask &= ~CRYPTO_ALG_TYPE_MASK; - type |= CRYPTO_ALG_TYPE_AHASH; - mask |= CRYPTO_ALG_TYPE_AHASH_MASK; - - return __crypto_ahash_cast(crypto_alloc_base(alg_name, type, mask)); -} +struct crypto_ahash *crypto_alloc_ahash(const char *alg_name, u32 type, + u32 mask); static inline struct crypto_tfm *crypto_ahash_tfm(struct crypto_ahash *tfm) { @@ -72,7 +117,7 @@ static inline struct crypto_tfm *crypto_ahash_tfm(struct crypto_ahash *tfm) static inline void crypto_free_ahash(struct crypto_ahash *tfm) { - crypto_free_tfm(crypto_ahash_tfm(tfm)); + crypto_destroy_tfm(tfm, crypto_ahash_tfm(tfm)); } static inline unsigned int crypto_ahash_alignmask( @@ -81,14 +126,26 @@ static inline unsigned int crypto_ahash_alignmask( return crypto_tfm_alg_alignmask(crypto_ahash_tfm(tfm)); } -static inline struct ahash_tfm *crypto_ahash_crt(struct crypto_ahash *tfm) +static inline struct hash_alg_common *__crypto_hash_alg_common( + struct crypto_alg *alg) +{ + return container_of(alg, struct hash_alg_common, base); +} + +static inline struct hash_alg_common *crypto_hash_alg_common( + struct crypto_ahash *tfm) { - return &crypto_ahash_tfm(tfm)->crt_ahash; + return __crypto_hash_alg_common(crypto_ahash_tfm(tfm)->__crt_alg); } static inline unsigned int crypto_ahash_digestsize(struct crypto_ahash *tfm) { - return crypto_ahash_crt(tfm)->digestsize; + return crypto_hash_alg_common(tfm)->digestsize; +} + +static inline unsigned int crypto_ahash_statesize(struct crypto_ahash *tfm) +{ + return crypto_hash_alg_common(tfm)->statesize; } static inline u32 crypto_ahash_get_flags(struct crypto_ahash *tfm) @@ -114,7 +171,7 @@ static inline struct crypto_ahash *crypto_ahash_reqtfm( static inline unsigned int crypto_ahash_reqsize(struct crypto_ahash *tfm) { - return crypto_ahash_crt(tfm)->reqsize; + return tfm->reqsize; } static inline void *ahash_request_ctx(struct ahash_request *req) @@ -122,44 +179,30 @@ static inline void *ahash_request_ctx(struct ahash_request *req) return req->__ctx; } -static inline int crypto_ahash_setkey(struct crypto_ahash *tfm, - const u8 *key, unsigned int keylen) -{ - struct ahash_tfm *crt = crypto_ahash_crt(tfm); - - return crt->setkey(tfm, key, keylen); -} +int crypto_ahash_setkey(struct crypto_ahash *tfm, const u8 *key, + unsigned int keylen); +int crypto_ahash_finup(struct ahash_request *req); +int crypto_ahash_final(struct ahash_request *req); +int crypto_ahash_digest(struct ahash_request *req); -static inline int crypto_ahash_digest(struct ahash_request *req) +static inline int crypto_ahash_export(struct ahash_request *req, void *out) { - struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req)); - return crt->digest(req); + return crypto_ahash_reqtfm(req)->export(req, out); } -static inline void crypto_ahash_export(struct ahash_request *req, u8 *out) +static inline int crypto_ahash_import(struct ahash_request *req, const void *in) { - memcpy(out, ahash_request_ctx(req), - crypto_ahash_reqsize(crypto_ahash_reqtfm(req))); + return crypto_ahash_reqtfm(req)->import(req, in); } -int crypto_ahash_import(struct ahash_request *req, const u8 *in); - static inline int crypto_ahash_init(struct ahash_request *req) { - struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req)); - return crt->init(req); + return crypto_ahash_reqtfm(req)->init(req); } static inline int crypto_ahash_update(struct ahash_request *req) { - struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req)); - return crt->update(req); -} - -static inline int crypto_ahash_final(struct ahash_request *req) -{ - struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req)); - return crt->final(req); + return crypto_ahash_reqtfm(req)->update(req); } static inline void ahash_request_set_tfm(struct ahash_request *req, @@ -184,7 +227,7 @@ static inline struct ahash_request *ahash_request_alloc( static inline void ahash_request_free(struct ahash_request *req) { - kfree(req); + kzfree(req); } static inline struct ahash_request *ahash_request_cast( @@ -251,6 +294,11 @@ static inline unsigned int crypto_shash_digestsize(struct crypto_shash *tfm) return crypto_shash_alg(tfm)->digestsize; } +static inline unsigned int crypto_shash_statesize(struct crypto_shash *tfm) +{ + return crypto_shash_alg(tfm)->statesize; +} + static inline u32 crypto_shash_get_flags(struct crypto_shash *tfm) { return crypto_tfm_get_flags(crypto_shash_tfm(tfm)); @@ -268,7 +316,7 @@ static inline void crypto_shash_clear_flags(struct crypto_shash *tfm, u32 flags) static inline unsigned int crypto_shash_descsize(struct crypto_shash *tfm) { - return crypto_shash_alg(tfm)->descsize; + return tfm->descsize; } static inline void *shash_desc_ctx(struct shash_desc *desc) @@ -281,12 +329,15 @@ int crypto_shash_setkey(struct crypto_shash *tfm, const u8 *key, int crypto_shash_digest(struct shash_desc *desc, const u8 *data, unsigned int len, u8 *out); -static inline void crypto_shash_export(struct shash_desc *desc, u8 *out) +static inline int crypto_shash_export(struct shash_desc *desc, void *out) { - memcpy(out, shash_desc_ctx(desc), crypto_shash_descsize(desc->tfm)); + return crypto_shash_alg(desc->tfm)->export(desc, out); } -int crypto_shash_import(struct shash_desc *desc, const u8 *in); +static inline int crypto_shash_import(struct shash_desc *desc, const void *in) +{ + return crypto_shash_alg(desc->tfm)->import(desc, in); +} static inline int crypto_shash_init(struct shash_desc *desc) { |