diff options
Diffstat (limited to 'crypto/shash.c')
-rw-r--r-- | crypto/shash.c | 189 |
1 files changed, 1 insertions, 188 deletions
diff --git a/crypto/shash.c b/crypto/shash.c index 359702c2..28092ed8 100644 --- a/crypto/shash.c +++ b/crypto/shash.c @@ -16,8 +16,6 @@ #include "hash.h" -static const struct crypto_type crypto_shash_type; - static inline struct crypto_istat_hash *shash_get_stat(struct shash_alg *alg) { return hash_get_stat(&alg->halg); @@ -193,191 +191,6 @@ int crypto_shash_import(struct shash_desc *desc, const void *in) } EXPORT_SYMBOL_GPL(crypto_shash_import); -static int shash_async_setkey(struct crypto_ahash *tfm, const u8 *key, - unsigned int keylen) -{ - struct crypto_shash **ctx = crypto_ahash_ctx(tfm); - - return crypto_shash_setkey(*ctx, key, keylen); -} - -static int shash_async_init(struct ahash_request *req) -{ - struct crypto_shash **ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req)); - struct shash_desc *desc = ahash_request_ctx(req); - - desc->tfm = *ctx; - - return crypto_shash_init(desc); -} - -int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc) -{ - struct crypto_hash_walk walk; - int nbytes; - - for (nbytes = crypto_hash_walk_first(req, &walk); nbytes > 0; - nbytes = crypto_hash_walk_done(&walk, nbytes)) - nbytes = crypto_shash_update(desc, walk.data, nbytes); - - return nbytes; -} -EXPORT_SYMBOL_GPL(shash_ahash_update); - -static int shash_async_update(struct ahash_request *req) -{ - return shash_ahash_update(req, ahash_request_ctx(req)); -} - -static int shash_async_final(struct ahash_request *req) -{ - return crypto_shash_final(ahash_request_ctx(req), req->result); -} - -int shash_ahash_finup(struct ahash_request *req, struct shash_desc *desc) -{ - struct crypto_hash_walk walk; - int nbytes; - - nbytes = crypto_hash_walk_first(req, &walk); - if (!nbytes) - return crypto_shash_final(desc, req->result); - - do { - nbytes = crypto_hash_walk_last(&walk) ? - crypto_shash_finup(desc, walk.data, nbytes, - req->result) : - crypto_shash_update(desc, walk.data, nbytes); - nbytes = crypto_hash_walk_done(&walk, nbytes); - } while (nbytes > 0); - - return nbytes; -} -EXPORT_SYMBOL_GPL(shash_ahash_finup); - -static int shash_async_finup(struct ahash_request *req) -{ - struct crypto_shash **ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req)); - struct shash_desc *desc = ahash_request_ctx(req); - - desc->tfm = *ctx; - - return shash_ahash_finup(req, desc); -} - -int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc) -{ - unsigned int nbytes = req->nbytes; - struct scatterlist *sg; - unsigned int offset; - int err; - - if (nbytes && - (sg = req->src, offset = sg->offset, - nbytes <= min(sg->length, ((unsigned int)(PAGE_SIZE)) - offset))) { - void *data; - - data = kmap_local_page(sg_page(sg)); - err = crypto_shash_digest(desc, data + offset, nbytes, - req->result); - kunmap_local(data); - } else - err = crypto_shash_init(desc) ?: - shash_ahash_finup(req, desc); - - return err; -} -EXPORT_SYMBOL_GPL(shash_ahash_digest); - -static int shash_async_digest(struct ahash_request *req) -{ - struct crypto_shash **ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req)); - struct shash_desc *desc = ahash_request_ctx(req); - - desc->tfm = *ctx; - - return shash_ahash_digest(req, desc); -} - -static int shash_async_export(struct ahash_request *req, void *out) -{ - return crypto_shash_export(ahash_request_ctx(req), out); -} - -static int shash_async_import(struct ahash_request *req, const void *in) -{ - struct crypto_shash **ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req)); - struct shash_desc *desc = ahash_request_ctx(req); - - desc->tfm = *ctx; - - return crypto_shash_import(desc, in); -} - -static void crypto_exit_shash_ops_async(struct crypto_tfm *tfm) -{ - struct crypto_shash **ctx = crypto_tfm_ctx(tfm); - - crypto_free_shash(*ctx); -} - -int crypto_init_shash_ops_async(struct crypto_tfm *tfm) -{ - struct crypto_alg *calg = tfm->__crt_alg; - struct shash_alg *alg = __crypto_shash_alg(calg); - struct crypto_ahash *crt = __crypto_ahash_cast(tfm); - struct crypto_shash **ctx = crypto_tfm_ctx(tfm); - struct crypto_shash *shash; - - if (!crypto_mod_get(calg)) - return -EAGAIN; - - shash = crypto_create_tfm(calg, &crypto_shash_type); - if (IS_ERR(shash)) { - crypto_mod_put(calg); - return PTR_ERR(shash); - } - - *ctx = shash; - tfm->exit = crypto_exit_shash_ops_async; - - crt->init = shash_async_init; - crt->update = shash_async_update; - crt->final = shash_async_final; - crt->finup = shash_async_finup; - crt->digest = shash_async_digest; - if (crypto_shash_alg_has_setkey(alg)) - crt->setkey = shash_async_setkey; - - crypto_ahash_set_flags(crt, crypto_shash_get_flags(shash) & - CRYPTO_TFM_NEED_KEY); - - crt->export = shash_async_export; - crt->import = shash_async_import; - - crt->reqsize = sizeof(struct shash_desc) + crypto_shash_descsize(shash); - - return 0; -} - -struct crypto_ahash *crypto_clone_shash_ops_async(struct crypto_ahash *nhash, - struct crypto_ahash *hash) -{ - struct crypto_shash **nctx = crypto_ahash_ctx(nhash); - struct crypto_shash **ctx = crypto_ahash_ctx(hash); - struct crypto_shash *shash; - - shash = crypto_clone_shash(*ctx); - if (IS_ERR(shash)) { - crypto_free_ahash(nhash); - return ERR_CAST(shash); - } - - *nctx = shash; - - return nhash; -} - static void crypto_shash_exit_tfm(struct crypto_tfm *tfm) { struct crypto_shash *hash = __crypto_shash_cast(tfm); @@ -456,7 +269,7 @@ static int __maybe_unused crypto_shash_report_stat( return crypto_hash_report_stat(skb, alg, "shash"); } -static const struct crypto_type crypto_shash_type = { +const struct crypto_type crypto_shash_type = { .extsize = crypto_alg_extsize, .init_tfm = crypto_shash_init_tfm, .free = crypto_shash_free_instance, |