forked from Minki/linux
73bed26f73
Initializing a crypto_akcipher_spawn currently requires:
1. Set spawn->base.inst to point to the instance.
2. Call crypto_grab_akcipher().
But there's no reason for these steps to be separate, and in fact this
unneeded complication has caused at least one bug, the one fixed by
commit 6db4341017 ("crypto: adiantum - initialize crypto_spawn::inst")
So just make crypto_grab_akcipher() take the instance as an argument.
To keep the function call from getting too unwieldy due to this extra
argument, also introduce a 'mask' variable into pkcs1pad_create().
Signed-off-by: Eric Biggers <ebiggers@google.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
134 lines
3.3 KiB
C
134 lines
3.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0-or-later */
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/*
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* Public Key Encryption
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*
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* Copyright (c) 2015, Intel Corporation
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* Authors: Tadeusz Struk <tadeusz.struk@intel.com>
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*/
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#ifndef _CRYPTO_AKCIPHER_INT_H
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#define _CRYPTO_AKCIPHER_INT_H
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#include <crypto/akcipher.h>
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#include <crypto/algapi.h>
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struct akcipher_instance {
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void (*free)(struct akcipher_instance *inst);
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union {
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struct {
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char head[offsetof(struct akcipher_alg, base)];
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struct crypto_instance base;
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} s;
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struct akcipher_alg alg;
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};
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};
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struct crypto_akcipher_spawn {
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struct crypto_spawn base;
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};
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/*
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* Transform internal helpers.
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*/
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static inline void *akcipher_request_ctx(struct akcipher_request *req)
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{
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return req->__ctx;
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}
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static inline void akcipher_set_reqsize(struct crypto_akcipher *akcipher,
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unsigned int reqsize)
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{
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crypto_akcipher_alg(akcipher)->reqsize = reqsize;
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}
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static inline void *akcipher_tfm_ctx(struct crypto_akcipher *tfm)
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{
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return tfm->base.__crt_ctx;
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}
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static inline void akcipher_request_complete(struct akcipher_request *req,
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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 const char *akcipher_alg_name(struct crypto_akcipher *tfm)
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{
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return crypto_akcipher_tfm(tfm)->__crt_alg->cra_name;
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}
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static inline struct crypto_instance *akcipher_crypto_instance(
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struct akcipher_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 akcipher_instance *akcipher_instance(
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struct crypto_instance *inst)
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{
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return container_of(&inst->alg, struct akcipher_instance, alg.base);
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}
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static inline struct akcipher_instance *akcipher_alg_instance(
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struct crypto_akcipher *akcipher)
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{
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return akcipher_instance(crypto_tfm_alg_instance(&akcipher->base));
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}
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static inline void *akcipher_instance_ctx(struct akcipher_instance *inst)
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{
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return crypto_instance_ctx(akcipher_crypto_instance(inst));
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}
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int crypto_grab_akcipher(struct crypto_akcipher_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 struct crypto_akcipher *crypto_spawn_akcipher(
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struct crypto_akcipher_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_drop_akcipher(struct crypto_akcipher_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 akcipher_alg *crypto_spawn_akcipher_alg(
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struct crypto_akcipher_spawn *spawn)
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{
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return container_of(spawn->base.alg, struct akcipher_alg, base);
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}
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/**
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* crypto_register_akcipher() -- Register public key algorithm
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*
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* Function registers an implementation of a public key verify algorithm
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*
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* @alg: algorithm definition
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*
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* Return: zero on success; error code in case of error
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*/
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int crypto_register_akcipher(struct akcipher_alg *alg);
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/**
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* crypto_unregister_akcipher() -- Unregister public key algorithm
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*
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* Function unregisters an implementation of a public key verify algorithm
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*
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* @alg: algorithm definition
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*/
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void crypto_unregister_akcipher(struct akcipher_alg *alg);
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/**
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* akcipher_register_instance() -- Unregister public key template instance
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*
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* Function registers an implementation of an asymmetric key algorithm
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* created from a template
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*
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* @tmpl: the template from which the algorithm was created
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* @inst: the template instance
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*/
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int akcipher_register_instance(struct crypto_template *tmpl,
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struct akcipher_instance *inst);
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#endif
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