root/include/crypto/internal/akcipher.h

INCLUDED FROM

DEFINITIONS

1. akcipher_request_ctx
2. akcipher_set_reqsize
3. akcipher_tfm_ctx
4. akcipher_request_complete
5. akcipher_alg_name
6. akcipher_crypto_instance
7. akcipher_alg_instance
8. akcipher_instance_ctx
9. crypto_set_akcipher_spawn
10. crypto_spawn_akcipher
11. crypto_drop_akcipher
12. crypto_spawn_akcipher_alg

   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  */
  31 static inline void *akcipher_request_ctx(struct akcipher_request *req)
  32 {
  33         return req->__ctx;
  34 }
  35 
  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 
  42 static inline void *akcipher_tfm_ctx(struct crypto_akcipher *tfm)
  43 {
  44         return tfm->base.__crt_ctx;
  45 }
  46 
  47 static inline void akcipher_request_complete(struct akcipher_request *req,
  48                                              int err)
  49 {
  50         req->base.complete(&req->base, err);
  51 }
  52 
  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 
  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 
  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 
  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 
  76 static inline void *akcipher_instance_ctx(struct akcipher_instance *inst)
  77 {
  78         return crypto_instance_ctx(akcipher_crypto_instance(inst));
  79 }
  80 
  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 
  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 
  97 static inline void crypto_drop_akcipher(struct crypto_akcipher_spawn *spawn)
  98 {
  99         crypto_drop_spawn(&spawn->base);
 100 }
 101 
 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