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/* SPDX-License-Identifier: GPL-2.0-or-later */
/*
* Public Key Encryption
*
* Copyright (c) 2015, Intel Corporation
* Authors: Tadeusz Struk <tadeusz.struk@intel.com>
*/
#ifndef _CRYPTO_AKCIPHER_INT_H
#define _CRYPTO_AKCIPHER_INT_H
#include <crypto/akcipher.h>
#include <crypto/algapi.h>
struct akcipher_instance {
void (*free)(struct akcipher_instance *inst);
union {
struct {
char head[offsetof(struct akcipher_alg, base)];
struct crypto_instance base;
} s;
struct akcipher_alg alg;
};
};
struct crypto_akcipher_spawn {
struct crypto_spawn base;
};
/*
* Transform internal helpers.
*/
static inline void *akcipher_request_ctx(struct akcipher_request *req)
{
return req->__ctx;
}
static inline void *akcipher_request_ctx_dma(struct akcipher_request *req)
{
unsigned int align = crypto_dma_align();
if (align <= crypto_tfm_ctx_alignment())
align = 1;
return PTR_ALIGN(akcipher_request_ctx(req), align);
}
static inline void akcipher_set_reqsize(struct crypto_akcipher *akcipher,
unsigned int reqsize)
{
akcipher->reqsize = reqsize;
}
static inline void akcipher_set_reqsize_dma(struct crypto_akcipher *akcipher,
unsigned int reqsize)
{
reqsize += crypto_dma_align() & ~(crypto_tfm_ctx_alignment() - 1);
akcipher->reqsize = reqsize;
}
static inline void *akcipher_tfm_ctx(struct crypto_akcipher *tfm)
{
return crypto_tfm_ctx(&tfm->base);
}
static inline void *akcipher_tfm_ctx_dma(struct crypto_akcipher *tfm)
{
return crypto_tfm_ctx_dma(&tfm->base);
}
static inline void akcipher_request_complete(struct akcipher_request *req,
int err)
{
crypto_request_complete(&req->base, err);
}
static inline const char *akcipher_alg_name(struct crypto_akcipher *tfm)
{
return crypto_akcipher_tfm(tfm)->__crt_alg->cra_name;
}
static inline struct crypto_instance *akcipher_crypto_instance(
struct akcipher_instance *inst)
{
return container_of(&inst->alg.base, struct crypto_instance, alg);
}
static inline struct akcipher_instance *akcipher_instance(
struct crypto_instance *inst)
{
return container_of(&inst->alg, struct akcipher_instance, alg.base);
}
static inline struct akcipher_instance *akcipher_alg_instance(
struct crypto_akcipher *akcipher)
{
return akcipher_instance(crypto_tfm_alg_instance(&akcipher->base));
}
static inline void *akcipher_instance_ctx(struct akcipher_instance *inst)
{
return crypto_instance_ctx(akcipher_crypto_instance(inst));
}
int crypto_grab_akcipher(struct crypto_akcipher_spawn *spawn,
struct crypto_instance *inst,
const char *name, u32 type, u32 mask);
static inline struct crypto_akcipher *crypto_spawn_akcipher(
struct crypto_akcipher_spawn *spawn)
{
return crypto_spawn_tfm2(&spawn->base);
}
static inline void crypto_drop_akcipher(struct crypto_akcipher_spawn *spawn)
{
crypto_drop_spawn(&spawn->base);
}
static inline struct akcipher_alg *crypto_spawn_akcipher_alg(
struct crypto_akcipher_spawn *spawn)
{
return container_of(spawn->base.alg, struct akcipher_alg, base);
}
/**
* crypto_register_akcipher() -- Register public key algorithm
*
* Function registers an implementation of a public key verify algorithm
*
* @alg: algorithm definition
*
* Return: zero on success; error code in case of error
*/
int crypto_register_akcipher(struct akcipher_alg *alg);
/**
* crypto_unregister_akcipher() -- Unregister public key algorithm
*
* Function unregisters an implementation of a public key verify algorithm
*
* @alg: algorithm definition
*/
void crypto_unregister_akcipher(struct akcipher_alg *alg);
/**
* akcipher_register_instance() -- Unregister public key template instance
*
* Function registers an implementation of an asymmetric key algorithm
* created from a template
*
* @tmpl: the template from which the algorithm was created
* @inst: the template instance
*/
int akcipher_register_instance(struct crypto_template *tmpl,
struct akcipher_instance *inst);
#endif
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