/* * 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 */