From 004a403c2e954734090a69aedc7f4f822bdcc142 Mon Sep 17 00:00:00 2001 From: Loc Ho Date: Wed, 14 May 2008 20:41:47 +0800 Subject: [CRYPTO] hash: Add asynchronous hash support This patch adds asynchronous hash and digest support. Signed-off-by: Loc Ho Signed-off-by: Herbert Xu --- include/crypto/algapi.h | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) (limited to 'include/crypto') diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h index 60d06e784be3..fef272a8ceeb 100644 --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -98,6 +98,7 @@ extern const struct crypto_type crypto_ablkcipher_type; extern const struct crypto_type crypto_aead_type; extern const struct crypto_type crypto_blkcipher_type; extern const struct crypto_type crypto_hash_type; +extern const struct crypto_type crypto_ahash_type; void crypto_mod_put(struct crypto_alg *alg); @@ -314,5 +315,40 @@ static inline int crypto_requires_sync(u32 type, u32 mask) return (type ^ CRYPTO_ALG_ASYNC) & mask & CRYPTO_ALG_ASYNC; } +static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm) +{ + return crypto_tfm_ctx(&tfm->base); +} + +static inline struct ahash_alg *crypto_ahash_alg( + struct crypto_ahash *tfm) +{ + return &crypto_ahash_tfm(tfm)->__crt_alg->cra_ahash; +} + +static inline int ahash_enqueue_request(struct crypto_queue *queue, + struct ahash_request *request) +{ + return crypto_enqueue_request(queue, &request->base); +} + +static inline struct ahash_request *ahash_dequeue_request( + struct crypto_queue *queue) +{ + return ahash_request_cast(crypto_dequeue_request(queue)); +} + +static inline void *ahash_request_ctx(struct ahash_request *req) +{ + return req->__ctx; +} + +static inline int ahash_tfm_in_queue(struct crypto_queue *queue, + struct crypto_ahash *tfm) +{ + return crypto_tfm_in_queue(queue, crypto_ahash_tfm(tfm)); +} + + #endif /* _CRYPTO_ALGAPI_H */ -- cgit v1.2.2 From 20036252fc61c624a49770fb89684ea5cfdfa05e Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Mon, 7 Jul 2008 22:19:53 +0800 Subject: crypto: hash - Added scatter list walking helper This patch adds the walking helpers for hash algorithms akin to those of block ciphers. This is a necessary step before we can reimplement existing hash algorithms using the new ahash interface. Signed-off-by: Herbert Xu --- include/crypto/internal/hash.h | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 include/crypto/internal/hash.h (limited to 'include/crypto') diff --git a/include/crypto/internal/hash.h b/include/crypto/internal/hash.h new file mode 100644 index 000000000000..93ac42280221 --- /dev/null +++ b/include/crypto/internal/hash.h @@ -0,0 +1,41 @@ +/* + * Hash algorithms. + * + * Copyright (c) 2008 Herbert Xu + * + * 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_INTERNAL_HASH_H +#define _CRYPTO_INTERNAL_HASH_H + +#include + +struct ahash_request; +struct scatterlist; + +struct crypto_hash_walk { + char *data; + + unsigned int offset; + unsigned int alignmask; + + struct page *pg; + unsigned int entrylen; + + unsigned int total; + struct scatterlist *sg; + + unsigned int flags; +}; + +int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err); +int crypto_hash_walk_first(struct ahash_request *req, + struct crypto_hash_walk *walk); + +#endif /* _CRYPTO_INTERNAL_HASH_H */ + -- cgit v1.2.2 From 18e33e6d5cc0495826f5245777cd267732815e01 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Thu, 10 Jul 2008 16:01:22 +0800 Subject: crypto: hash - Move ahash functions into crypto/hash.h All new crypto interfaces should go into individual files as much as possible in order to ensure that crypto.h does not collapse under its own weight. This patch moves the ahash code into crypto/hash.h and crypto/internal/hash.h respectively. Signed-off-by: Herbert Xu --- include/crypto/algapi.h | 36 ---------- include/crypto/hash.h | 154 +++++++++++++++++++++++++++++++++++++++++ include/crypto/internal/hash.h | 37 ++++++++++ 3 files changed, 191 insertions(+), 36 deletions(-) create mode 100644 include/crypto/hash.h (limited to 'include/crypto') diff --git a/include/crypto/algapi.h b/include/crypto/algapi.h index fef272a8ceeb..60d06e784be3 100644 --- a/include/crypto/algapi.h +++ b/include/crypto/algapi.h @@ -98,7 +98,6 @@ extern const struct crypto_type crypto_ablkcipher_type; extern const struct crypto_type crypto_aead_type; extern const struct crypto_type crypto_blkcipher_type; extern const struct crypto_type crypto_hash_type; -extern const struct crypto_type crypto_ahash_type; void crypto_mod_put(struct crypto_alg *alg); @@ -315,40 +314,5 @@ static inline int crypto_requires_sync(u32 type, u32 mask) return (type ^ CRYPTO_ALG_ASYNC) & mask & CRYPTO_ALG_ASYNC; } -static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm) -{ - return crypto_tfm_ctx(&tfm->base); -} - -static inline struct ahash_alg *crypto_ahash_alg( - struct crypto_ahash *tfm) -{ - return &crypto_ahash_tfm(tfm)->__crt_alg->cra_ahash; -} - -static inline int ahash_enqueue_request(struct crypto_queue *queue, - struct ahash_request *request) -{ - return crypto_enqueue_request(queue, &request->base); -} - -static inline struct ahash_request *ahash_dequeue_request( - struct crypto_queue *queue) -{ - return ahash_request_cast(crypto_dequeue_request(queue)); -} - -static inline void *ahash_request_ctx(struct ahash_request *req) -{ - return req->__ctx; -} - -static inline int ahash_tfm_in_queue(struct crypto_queue *queue, - struct crypto_ahash *tfm) -{ - return crypto_tfm_in_queue(queue, crypto_ahash_tfm(tfm)); -} - - #endif /* _CRYPTO_ALGAPI_H */ diff --git a/include/crypto/hash.h b/include/crypto/hash.h new file mode 100644 index 000000000000..d12498ec8a4e --- /dev/null +++ b/include/crypto/hash.h @@ -0,0 +1,154 @@ +/* + * Hash: Hash algorithms under the crypto API + * + * Copyright (c) 2008 Herbert Xu + * + * 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 + +struct crypto_ahash { + struct crypto_tfm base; +}; + +static inline struct crypto_ahash *__crypto_ahash_cast(struct crypto_tfm *tfm) +{ + return (struct crypto_ahash *)tfm; +} + +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)); +} + +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_free_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 ahash_tfm *crypto_ahash_crt(struct crypto_ahash *tfm) +{ + return &crypto_ahash_tfm(tfm)->crt_ahash; +} + +static inline unsigned int crypto_ahash_digestsize(struct crypto_ahash *tfm) +{ + return crypto_ahash_crt(tfm)->digestsize; +} + +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 crypto_ahash_crt(tfm)->reqsize; +} + +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); +} + +static inline int crypto_ahash_digest(struct ahash_request *req) +{ + struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req)); + return crt->digest(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) +{ + kfree(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; +} + +#endif /* _CRYPTO_HASH_H */ diff --git a/include/crypto/internal/hash.h b/include/crypto/internal/hash.h index 93ac42280221..917ae57bad4a 100644 --- a/include/crypto/internal/hash.h +++ b/include/crypto/internal/hash.h @@ -14,6 +14,7 @@ #define _CRYPTO_INTERNAL_HASH_H #include +#include struct ahash_request; struct scatterlist; @@ -33,9 +34,45 @@ struct crypto_hash_walk { unsigned int flags; }; +extern const struct crypto_type crypto_ahash_type; + int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err); int crypto_hash_walk_first(struct ahash_request *req, struct crypto_hash_walk *walk); +static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm) +{ + return crypto_tfm_ctx(&tfm->base); +} + +static inline struct ahash_alg *crypto_ahash_alg( + struct crypto_ahash *tfm) +{ + return &crypto_ahash_tfm(tfm)->__crt_alg->cra_ahash; +} + +static inline int ahash_enqueue_request(struct crypto_queue *queue, + struct ahash_request *request) +{ + return crypto_enqueue_request(queue, &request->base); +} + +static inline struct ahash_request *ahash_dequeue_request( + struct crypto_queue *queue) +{ + return ahash_request_cast(crypto_dequeue_request(queue)); +} + +static inline void *ahash_request_ctx(struct ahash_request *req) +{ + return req->__ctx; +} + +static inline int ahash_tfm_in_queue(struct crypto_queue *queue, + struct crypto_ahash *tfm) +{ + return crypto_tfm_in_queue(queue, crypto_ahash_tfm(tfm)); +} + #endif /* _CRYPTO_INTERNAL_HASH_H */ -- cgit v1.2.2