147 lines
3.5 KiB
C
147 lines
3.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* AEAD: Authenticated Encryption with Associated Data
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*
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* Copyright (c) 2007-2015 Herbert Xu <herbert@gondor.apana.org.au>
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*/
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#ifndef _CRYPTO_INTERNAL_AEAD_H
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#define _CRYPTO_INTERNAL_AEAD_H
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#include <crypto/aead.h>
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#include <crypto/algapi.h>
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#include <linux/stddef.h>
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#include <linux/types.h>
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struct rtattr;
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struct aead_instance {
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void (*free)(struct aead_instance *inst);
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union {
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struct {
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char head[offsetof(struct aead_alg, base)];
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struct crypto_instance base;
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} s;
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struct aead_alg alg;
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};
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};
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struct crypto_aead_spawn {
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struct crypto_spawn base;
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};
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struct aead_queue {
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struct crypto_queue base;
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};
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static inline void *crypto_aead_ctx(struct crypto_aead *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 *aead_crypto_instance(
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struct aead_instance *inst)
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{
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return container_of(&inst->alg.base, struct crypto_instance, alg);
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}
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static inline struct aead_instance *aead_instance(struct crypto_instance *inst)
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{
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return container_of(&inst->alg, struct aead_instance, alg.base);
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}
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static inline struct aead_instance *aead_alg_instance(struct crypto_aead *aead)
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{
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return aead_instance(crypto_tfm_alg_instance(&aead->base));
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}
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static inline void *aead_instance_ctx(struct aead_instance *inst)
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{
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return crypto_instance_ctx(aead_crypto_instance(inst));
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}
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static inline void *aead_request_ctx(struct aead_request *req)
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{
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return req->__ctx;
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}
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static inline void aead_request_complete(struct aead_request *req, int err)
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{
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req->base.complete(&req->base, err);
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}
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static inline u32 aead_request_flags(struct aead_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 aead_request *aead_request_cast(
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struct crypto_async_request *req)
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{
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return container_of(req, struct aead_request, base);
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}
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int crypto_grab_aead(struct crypto_aead_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_aead(struct crypto_aead_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 aead_alg *crypto_spawn_aead_alg(
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struct crypto_aead_spawn *spawn)
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{
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return container_of(spawn->base.alg, struct aead_alg, base);
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}
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static inline struct crypto_aead *crypto_spawn_aead(
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struct crypto_aead_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_aead_set_reqsize(struct crypto_aead *aead,
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unsigned int reqsize)
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{
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aead->reqsize = reqsize;
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}
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static inline void aead_init_queue(struct aead_queue *queue,
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unsigned int max_qlen)
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{
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crypto_init_queue(&queue->base, max_qlen);
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}
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static inline unsigned int crypto_aead_alg_chunksize(struct aead_alg *alg)
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{
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return alg->chunksize;
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}
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/**
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* crypto_aead_chunksize() - obtain chunk size
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* @tfm: cipher handle
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*
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* The block size is set to one for ciphers such as CCM. However,
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* you still need to provide incremental updates in multiples of
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* the underlying block size as the IV does not have sub-block
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* granularity. This is known in this API as the chunk size.
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*
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* Return: chunk size in bytes
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*/
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static inline unsigned int crypto_aead_chunksize(struct crypto_aead *tfm)
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{
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return crypto_aead_alg_chunksize(crypto_aead_alg(tfm));
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}
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int crypto_register_aead(struct aead_alg *alg);
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void crypto_unregister_aead(struct aead_alg *alg);
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int crypto_register_aeads(struct aead_alg *algs, int count);
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void crypto_unregister_aeads(struct aead_alg *algs, int count);
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int aead_register_instance(struct crypto_template *tmpl,
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struct aead_instance *inst);
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#endif /* _CRYPTO_INTERNAL_AEAD_H */
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