274 lines
6.7 KiB
C
274 lines
6.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Hash algorithms.
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*
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* Copyright (c) 2008 Herbert Xu <herbert@gondor.apana.org.au>
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*/
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#ifndef _CRYPTO_INTERNAL_HASH_H
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#define _CRYPTO_INTERNAL_HASH_H
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#include <crypto/algapi.h>
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#include <crypto/hash.h>
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struct ahash_request;
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struct scatterlist;
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struct crypto_hash_walk {
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char *data;
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unsigned int offset;
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unsigned int alignmask;
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struct page *pg;
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unsigned int entrylen;
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unsigned int total;
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struct scatterlist *sg;
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unsigned int flags;
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};
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struct ahash_instance {
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void (*free)(struct ahash_instance *inst);
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union {
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struct {
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char head[offsetof(struct ahash_alg, halg.base)];
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struct crypto_instance base;
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} s;
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struct ahash_alg alg;
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};
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};
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struct shash_instance {
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void (*free)(struct shash_instance *inst);
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union {
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struct {
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char head[offsetof(struct shash_alg, base)];
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struct crypto_instance base;
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} s;
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struct shash_alg alg;
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};
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};
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struct crypto_ahash_spawn {
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struct crypto_spawn base;
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};
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struct crypto_shash_spawn {
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struct crypto_spawn base;
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};
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int crypto_hash_walk_done(struct crypto_hash_walk *walk, int err);
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int crypto_hash_walk_first(struct ahash_request *req,
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struct crypto_hash_walk *walk);
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static inline int crypto_hash_walk_last(struct crypto_hash_walk *walk)
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{
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return !(walk->entrylen | walk->total);
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}
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int crypto_register_ahash(struct ahash_alg *alg);
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void crypto_unregister_ahash(struct ahash_alg *alg);
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int crypto_register_ahashes(struct ahash_alg *algs, int count);
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void crypto_unregister_ahashes(struct ahash_alg *algs, int count);
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int ahash_register_instance(struct crypto_template *tmpl,
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struct ahash_instance *inst);
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int shash_no_setkey(struct crypto_shash *tfm, const u8 *key,
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unsigned int keylen);
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static inline bool crypto_shash_alg_has_setkey(struct shash_alg *alg)
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{
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return alg->setkey != shash_no_setkey;
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}
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static inline bool crypto_shash_alg_needs_key(struct shash_alg *alg)
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{
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return crypto_shash_alg_has_setkey(alg) &&
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!(alg->base.cra_flags & CRYPTO_ALG_OPTIONAL_KEY);
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}
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bool crypto_hash_alg_has_setkey(struct hash_alg_common *halg);
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int crypto_grab_ahash(struct crypto_ahash_spawn *spawn,
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struct crypto_instance *inst,
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const char *name, u32 type, u32 mask);
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static inline void crypto_drop_ahash(struct crypto_ahash_spawn *spawn)
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{
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crypto_drop_spawn(&spawn->base);
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}
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static inline struct hash_alg_common *crypto_spawn_ahash_alg(
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struct crypto_ahash_spawn *spawn)
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{
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return __crypto_hash_alg_common(spawn->base.alg);
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}
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int crypto_register_shash(struct shash_alg *alg);
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void crypto_unregister_shash(struct shash_alg *alg);
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int crypto_register_shashes(struct shash_alg *algs, int count);
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void crypto_unregister_shashes(struct shash_alg *algs, int count);
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int shash_register_instance(struct crypto_template *tmpl,
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struct shash_instance *inst);
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void shash_free_singlespawn_instance(struct shash_instance *inst);
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int crypto_grab_shash(struct crypto_shash_spawn *spawn,
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struct crypto_instance *inst,
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const char *name, u32 type, u32 mask);
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static inline void crypto_drop_shash(struct crypto_shash_spawn *spawn)
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{
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crypto_drop_spawn(&spawn->base);
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}
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static inline struct shash_alg *crypto_spawn_shash_alg(
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struct crypto_shash_spawn *spawn)
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{
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return __crypto_shash_alg(spawn->base.alg);
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}
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int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc);
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int shash_ahash_finup(struct ahash_request *req, struct shash_desc *desc);
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int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc);
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int crypto_init_shash_ops_async(struct crypto_tfm *tfm);
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static inline void *crypto_ahash_ctx(struct crypto_ahash *tfm)
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{
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return crypto_tfm_ctx(crypto_ahash_tfm(tfm));
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}
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static inline void *crypto_ahash_ctx_dma(struct crypto_ahash *tfm)
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{
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return crypto_tfm_ctx_dma(crypto_ahash_tfm(tfm));
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}
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static inline struct ahash_alg *__crypto_ahash_alg(struct crypto_alg *alg)
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{
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return container_of(__crypto_hash_alg_common(alg), struct ahash_alg,
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halg);
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}
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static inline void crypto_ahash_set_reqsize(struct crypto_ahash *tfm,
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unsigned int reqsize)
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{
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tfm->reqsize = reqsize;
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}
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static inline void crypto_ahash_set_reqsize_dma(struct crypto_ahash *ahash,
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unsigned int reqsize)
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{
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reqsize += crypto_dma_align() & ~(crypto_tfm_ctx_alignment() - 1);
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ahash->reqsize = reqsize;
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}
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static inline struct crypto_instance *ahash_crypto_instance(
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struct ahash_instance *inst)
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{
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return &inst->s.base;
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}
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static inline struct ahash_instance *ahash_instance(
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struct crypto_instance *inst)
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{
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return container_of(inst, struct ahash_instance, s.base);
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}
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static inline struct ahash_instance *ahash_alg_instance(
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struct crypto_ahash *ahash)
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{
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return ahash_instance(crypto_tfm_alg_instance(&ahash->base));
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}
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static inline void *ahash_instance_ctx(struct ahash_instance *inst)
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{
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return crypto_instance_ctx(ahash_crypto_instance(inst));
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}
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static inline void *ahash_request_ctx_dma(struct ahash_request *req)
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{
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unsigned int align = crypto_dma_align();
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if (align <= crypto_tfm_ctx_alignment())
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align = 1;
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return PTR_ALIGN(ahash_request_ctx(req), align);
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}
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static inline void ahash_request_complete(struct ahash_request *req, int err)
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{
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crypto_request_complete(&req->base, err);
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}
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static inline u32 ahash_request_flags(struct ahash_request *req)
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{
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return req->base.flags;
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}
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static inline struct crypto_ahash *crypto_spawn_ahash(
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struct crypto_ahash_spawn *spawn)
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{
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return crypto_spawn_tfm2(&spawn->base);
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}
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static inline int ahash_enqueue_request(struct crypto_queue *queue,
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struct ahash_request *request)
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{
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return crypto_enqueue_request(queue, &request->base);
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}
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static inline struct ahash_request *ahash_dequeue_request(
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struct crypto_queue *queue)
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{
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return ahash_request_cast(crypto_dequeue_request(queue));
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}
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static inline void *crypto_shash_ctx(struct crypto_shash *tfm)
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{
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return crypto_tfm_ctx(&tfm->base);
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}
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static inline struct crypto_instance *shash_crypto_instance(
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struct shash_instance *inst)
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{
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return &inst->s.base;
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}
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static inline struct shash_instance *shash_instance(
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struct crypto_instance *inst)
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{
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return container_of(inst, struct shash_instance, s.base);
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}
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static inline struct shash_instance *shash_alg_instance(
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struct crypto_shash *shash)
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{
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return shash_instance(crypto_tfm_alg_instance(&shash->base));
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}
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static inline void *shash_instance_ctx(struct shash_instance *inst)
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{
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return crypto_instance_ctx(shash_crypto_instance(inst));
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}
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static inline struct crypto_shash *crypto_spawn_shash(
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struct crypto_shash_spawn *spawn)
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{
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return crypto_spawn_tfm2(&spawn->base);
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}
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static inline void *crypto_shash_ctx_aligned(struct crypto_shash *tfm)
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{
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return crypto_tfm_ctx_aligned(&tfm->base);
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}
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static inline struct crypto_shash *__crypto_shash_cast(struct crypto_tfm *tfm)
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{
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return container_of(tfm, struct crypto_shash, base);
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}
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#endif /* _CRYPTO_INTERNAL_HASH_H */
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