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1/* SPDX-License-Identifier: GPL-2.0-or-later */
2/*
3 * Public Key Encryption
4 *
5 * Copyright (c) 2015, Intel Corporation
6 * Authors: Tadeusz Struk <tadeusz.struk@intel.com>
7 */
8#ifndef _CRYPTO_AKCIPHER_INT_H
9#define _CRYPTO_AKCIPHER_INT_H
10#include <crypto/akcipher.h>
11#include <crypto/algapi.h>
12
13struct akcipher_instance {
14 void (*free)(struct akcipher_instance *inst);
15 union {
16 struct {
17 char head[offsetof(struct akcipher_alg, base)];
18 struct crypto_instance base;
19 } s;
20 struct akcipher_alg alg;
21 };
22};
23
24struct crypto_akcipher_spawn {
25 struct crypto_spawn base;
26};
27
28/*
29 * Transform internal helpers.
30 */
31static inline void *akcipher_request_ctx(struct akcipher_request *req)
32{
33 return req->__ctx;
34}
35
36static inline void akcipher_set_reqsize(struct crypto_akcipher *akcipher,
37 unsigned int reqsize)
38{
39 crypto_akcipher_alg(akcipher)->reqsize = reqsize;
40}
41
42static inline void *akcipher_tfm_ctx(struct crypto_akcipher *tfm)
43{
44 return tfm->base.__crt_ctx;
45}
46
47static inline void akcipher_request_complete(struct akcipher_request *req,
48 int err)
49{
50 req->base.complete(&req->base, err);
51}
52
53static inline const char *akcipher_alg_name(struct crypto_akcipher *tfm)
54{
55 return crypto_akcipher_tfm(tfm)->__crt_alg->cra_name;
56}
57
58static inline struct crypto_instance *akcipher_crypto_instance(
59 struct akcipher_instance *inst)
60{
61 return container_of(&inst->alg.base, struct crypto_instance, alg);
62}
63
64static inline struct akcipher_instance *akcipher_instance(
65 struct crypto_instance *inst)
66{
67 return container_of(&inst->alg, struct akcipher_instance, alg.base);
68}
69
70static inline struct akcipher_instance *akcipher_alg_instance(
71 struct crypto_akcipher *akcipher)
72{
73 return akcipher_instance(crypto_tfm_alg_instance(&akcipher->base));
74}
75
76static inline void *akcipher_instance_ctx(struct akcipher_instance *inst)
77{
78 return crypto_instance_ctx(akcipher_crypto_instance(inst));
79}
80
81static inline void crypto_set_akcipher_spawn(
82 struct crypto_akcipher_spawn *spawn,
83 struct crypto_instance *inst)
84{
85 crypto_set_spawn(&spawn->base, inst);
86}
87
88int crypto_grab_akcipher(struct crypto_akcipher_spawn *spawn, const char *name,
89 u32 type, u32 mask);
90
91static inline struct crypto_akcipher *crypto_spawn_akcipher(
92 struct crypto_akcipher_spawn *spawn)
93{
94 return crypto_spawn_tfm2(&spawn->base);
95}
96
97static inline void crypto_drop_akcipher(struct crypto_akcipher_spawn *spawn)
98{
99 crypto_drop_spawn(&spawn->base);
100}
101
102static inline struct akcipher_alg *crypto_spawn_akcipher_alg(
103 struct crypto_akcipher_spawn *spawn)
104{
105 return container_of(spawn->base.alg, struct akcipher_alg, base);
106}
107
108/**
109 * crypto_register_akcipher() -- Register public key algorithm
110 *
111 * Function registers an implementation of a public key verify algorithm
112 *
113 * @alg: algorithm definition
114 *
115 * Return: zero on success; error code in case of error
116 */
117int crypto_register_akcipher(struct akcipher_alg *alg);
118
119/**
120 * crypto_unregister_akcipher() -- Unregister public key algorithm
121 *
122 * Function unregisters an implementation of a public key verify algorithm
123 *
124 * @alg: algorithm definition
125 */
126void crypto_unregister_akcipher(struct akcipher_alg *alg);
127
128/**
129 * akcipher_register_instance() -- Unregister public key template instance
130 *
131 * Function registers an implementation of an asymmetric key algorithm
132 * created from a template
133 *
134 * @tmpl: the template from which the algorithm was created
135 * @inst: the template instance
136 */
137int akcipher_register_instance(struct crypto_template *tmpl,
138 struct akcipher_instance *inst);
139#endif