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