diff options
Diffstat (limited to 'include/crypto/hash.h')
| -rw-r--r-- | include/crypto/hash.h | 353 |
1 files changed, 353 insertions, 0 deletions
diff --git a/include/crypto/hash.h b/include/crypto/hash.h new file mode 100644 index 00000000..26cb1eb1 --- /dev/null +++ b/include/crypto/hash.h @@ -0,0 +1,353 @@ +/* + * Hash: Hash algorithms under the crypto API + * + * Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au> + * + * 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 _CRYPTO_HASH_H +#define _CRYPTO_HASH_H + +#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; + + void *__ctx[] CRYPTO_MINALIGN_ATTR; +}; + +struct shash_alg { + int (*init)(struct shash_desc *desc); + int (*update)(struct shash_desc *desc, const u8 *data, + unsigned int len); + int (*final)(struct shash_desc *desc, u8 *out); + int (*finup)(struct shash_desc *desc, const u8 *data, + 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; + + /* 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 container_of(tfm, struct crypto_ahash, base); +} + +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) +{ + return &tfm->base; +} + +static inline void crypto_free_ahash(struct crypto_ahash *tfm) +{ + crypto_destroy_tfm(tfm, crypto_ahash_tfm(tfm)); +} + +static inline unsigned int crypto_ahash_alignmask( + struct crypto_ahash *tfm) +{ + return crypto_tfm_alg_alignmask(crypto_ahash_tfm(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_hash_alg_common(crypto_ahash_tfm(tfm)->__crt_alg); +} + +static inline unsigned int crypto_ahash_digestsize(struct crypto_ahash *tfm) +{ + 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) +{ + return crypto_tfm_get_flags(crypto_ahash_tfm(tfm)); +} + +static inline void crypto_ahash_set_flags(struct crypto_ahash *tfm, u32 flags) +{ + crypto_tfm_set_flags(crypto_ahash_tfm(tfm), flags); +} + +static inline void crypto_ahash_clear_flags(struct crypto_ahash *tfm, u32 flags) +{ + crypto_tfm_clear_flags(crypto_ahash_tfm(tfm), flags); +} + +static inline struct crypto_ahash *crypto_ahash_reqtfm( + struct ahash_request *req) +{ + return __crypto_ahash_cast(req->base.tfm); +} + +static inline unsigned int crypto_ahash_reqsize(struct crypto_ahash *tfm) +{ + return tfm->reqsize; +} + +static inline void *ahash_request_ctx(struct ahash_request *req) +{ + return req->__ctx; +} + +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_export(struct ahash_request *req, void *out) +{ + return crypto_ahash_reqtfm(req)->export(req, out); +} + +static inline int crypto_ahash_import(struct ahash_request *req, const void *in) +{ + return crypto_ahash_reqtfm(req)->import(req, in); +} + +static inline int crypto_ahash_init(struct ahash_request *req) +{ + return crypto_ahash_reqtfm(req)->init(req); +} + +static inline int crypto_ahash_update(struct ahash_request *req) +{ + return crypto_ahash_reqtfm(req)->update(req); +} + +static inline void ahash_request_set_tfm(struct ahash_request *req, + struct crypto_ahash *tfm) +{ + req->base.tfm = crypto_ahash_tfm(tfm); +} + +static inline struct ahash_request *ahash_request_alloc( + struct crypto_ahash *tfm, gfp_t gfp) +{ + struct ahash_request *req; + + req = kmalloc(sizeof(struct ahash_request) + + crypto_ahash_reqsize(tfm), gfp); + + if (likely(req)) + ahash_request_set_tfm(req, tfm); + + return req; +} + +static inline void ahash_request_free(struct ahash_request *req) +{ + kzfree(req); +} + +static inline struct ahash_request *ahash_request_cast( + struct crypto_async_request *req) +{ + return container_of(req, struct ahash_request, base); +} + +static inline void ahash_request_set_callback(struct ahash_request *req, + u32 flags, + crypto_completion_t complete, + void *data) +{ + req->base.complete = complete; + req->base.data = data; + req->base.flags = flags; +} + +static inline void ahash_request_set_crypt(struct ahash_request *req, + struct scatterlist *src, u8 *result, + unsigned int nbytes) +{ + req->src = src; + req->nbytes = nbytes; + req->result = result; +} + +struct crypto_shash *crypto_alloc_shash(const char *alg_name, u32 type, + u32 mask); + +static inline struct crypto_tfm *crypto_shash_tfm(struct crypto_shash *tfm) +{ + return &tfm->base; +} + +static inline void crypto_free_shash(struct crypto_shash *tfm) +{ + crypto_destroy_tfm(tfm, crypto_shash_tfm(tfm)); +} + +static inline unsigned int crypto_shash_alignmask( + struct crypto_shash *tfm) +{ + return crypto_tfm_alg_alignmask(crypto_shash_tfm(tfm)); +} + +static inline unsigned int crypto_shash_blocksize(struct crypto_shash *tfm) +{ + return crypto_tfm_alg_blocksize(crypto_shash_tfm(tfm)); +} + +static inline struct shash_alg *__crypto_shash_alg(struct crypto_alg *alg) +{ + return container_of(alg, struct shash_alg, base); +} + +static inline struct shash_alg *crypto_shash_alg(struct crypto_shash *tfm) +{ + return __crypto_shash_alg(crypto_shash_tfm(tfm)->__crt_alg); +} + +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)); +} + +static inline void crypto_shash_set_flags(struct crypto_shash *tfm, u32 flags) +{ + crypto_tfm_set_flags(crypto_shash_tfm(tfm), flags); +} + +static inline void crypto_shash_clear_flags(struct crypto_shash *tfm, u32 flags) +{ + crypto_tfm_clear_flags(crypto_shash_tfm(tfm), flags); +} + +static inline unsigned int crypto_shash_descsize(struct crypto_shash *tfm) +{ + return tfm->descsize; +} + +static inline void *shash_desc_ctx(struct shash_desc *desc) +{ + return desc->__ctx; +} + +int crypto_shash_setkey(struct crypto_shash *tfm, const u8 *key, + unsigned int keylen); +int crypto_shash_digest(struct shash_desc *desc, const u8 *data, + unsigned int len, u8 *out); + +static inline int crypto_shash_export(struct shash_desc *desc, void *out) +{ + return crypto_shash_alg(desc->tfm)->export(desc, out); +} + +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) +{ + return crypto_shash_alg(desc->tfm)->init(desc); +} + +int crypto_shash_update(struct shash_desc *desc, const u8 *data, + unsigned int len); +int crypto_shash_final(struct shash_desc *desc, u8 *out); +int crypto_shash_finup(struct shash_desc *desc, const u8 *data, + unsigned int len, u8 *out); + +#endif /* _CRYPTO_HASH_H */ |