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
13 struct 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
24 struct crypto_akcipher_spawn {
25 struct crypto_spawn base;
26 };
27
28 /*
29 * Transform internal helpers.
30 */
akcipher_request_ctx(struct akcipher_request * req)31 static inline void *akcipher_request_ctx(struct akcipher_request *req)
32 {
33 return req->__ctx;
34 }
35
akcipher_set_reqsize(struct crypto_akcipher * akcipher,unsigned int reqsize)36 static inline void akcipher_set_reqsize(struct crypto_akcipher *akcipher,
37 unsigned int reqsize)
38 {
39 crypto_akcipher_alg(akcipher)->reqsize = reqsize;
40 }
41
akcipher_tfm_ctx(struct crypto_akcipher * tfm)42 static inline void *akcipher_tfm_ctx(struct crypto_akcipher *tfm)
43 {
44 return tfm->base.__crt_ctx;
45 }
46
akcipher_request_complete(struct akcipher_request * req,int err)47 static inline void akcipher_request_complete(struct akcipher_request *req,
48 int err)
49 {
50 req->base.complete(&req->base, err);
51 }
52
akcipher_alg_name(struct crypto_akcipher * tfm)53 static inline const char *akcipher_alg_name(struct crypto_akcipher *tfm)
54 {
55 return crypto_akcipher_tfm(tfm)->__crt_alg->cra_name;
56 }
57
akcipher_crypto_instance(struct akcipher_instance * inst)58 static 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
akcipher_instance(struct crypto_instance * inst)64 static 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
akcipher_alg_instance(struct crypto_akcipher * akcipher)70 static 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
akcipher_instance_ctx(struct akcipher_instance * inst)76 static inline void *akcipher_instance_ctx(struct akcipher_instance *inst)
77 {
78 return crypto_instance_ctx(akcipher_crypto_instance(inst));
79 }
80
crypto_set_akcipher_spawn(struct crypto_akcipher_spawn * spawn,struct crypto_instance * inst)81 static 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
88 int crypto_grab_akcipher(struct crypto_akcipher_spawn *spawn, const char *name,
89 u32 type, u32 mask);
90
crypto_spawn_akcipher(struct crypto_akcipher_spawn * spawn)91 static inline struct crypto_akcipher *crypto_spawn_akcipher(
92 struct crypto_akcipher_spawn *spawn)
93 {
94 return crypto_spawn_tfm2(&spawn->base);
95 }
96
crypto_drop_akcipher(struct crypto_akcipher_spawn * spawn)97 static inline void crypto_drop_akcipher(struct crypto_akcipher_spawn *spawn)
98 {
99 crypto_drop_spawn(&spawn->base);
100 }
101
crypto_spawn_akcipher_alg(struct crypto_akcipher_spawn * spawn)102 static 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 */
117 int 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 */
126 void 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 */
137 int akcipher_register_instance(struct crypto_template *tmpl,
138 struct akcipher_instance *inst);
139 #endif
140
