include/crypto/internal/skcipher.h

   1 /*
   2  * Symmetric key ciphers.
   3  *
   4  * Copyright (c) 2007 Herbert Xu <herbert@gondor.apana.org.au>
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU General Public License as published by the Free
   8  * Software Foundation; either version 2 of the License, or (at your option)
   9  * any later version.
  10  *
  11  */
  12
  13 #ifndef _CRYPTO_INTERNAL_SKCIPHER_H
  14 #define _CRYPTO_INTERNAL_SKCIPHER_H
  15
  16 #include <crypto/algapi.h>
  17 #include <crypto/skcipher.h>
  18 #include <linux/init.h>
  19 #include <linux/types.h>
  20
  21 struct rtattr;
  22
  23 struct crypto_skcipher_spawn {
  24         struct crypto_spawn base;
  25 };
  26
  27 extern const struct crypto_type crypto_givcipher_type;
  28
  29 static inline void crypto_set_skcipher_spawn(
  30         struct crypto_skcipher_spawn *spawn, struct crypto_instance *inst)
  31 {
  32         crypto_set_spawn(&spawn->base, inst);
  33 }
  34
  35 int crypto_grab_skcipher(struct crypto_skcipher_spawn *spawn, const char *name,
  36                          u32 type, u32 mask);
  37
  38 static inline void crypto_drop_skcipher(struct crypto_skcipher_spawn *spawn)
  39 {
  40         crypto_drop_spawn(&spawn->base);
  41 }
  42
  43 static inline struct crypto_alg *crypto_skcipher_spawn_alg(
  44         struct crypto_skcipher_spawn *spawn)
  45 {
  46         return spawn->base.alg;
  47 }
  48
  49 static inline struct crypto_ablkcipher *crypto_spawn_skcipher(
  50         struct crypto_skcipher_spawn *spawn)
  51 {
  52         return __crypto_ablkcipher_cast(
  53                 crypto_spawn_tfm(&spawn->base, crypto_skcipher_type(0),
  54                                  crypto_skcipher_mask(0)));
  55 }
  56
  57 int skcipher_null_givencrypt(struct skcipher_givcrypt_request *req);
  58 int skcipher_null_givdecrypt(struct skcipher_givcrypt_request *req);
  59 const char *crypto_default_geniv(const struct crypto_alg *alg);
  60
  61 struct crypto_instance *skcipher_geniv_alloc(struct crypto_template *tmpl,
  62                                              struct rtattr **tb, u32 type,
  63                                              u32 mask);
  64 void skcipher_geniv_free(struct crypto_instance *inst);
  65 int skcipher_geniv_init(struct crypto_tfm *tfm);
  66 void skcipher_geniv_exit(struct crypto_tfm *tfm);
  67
  68 int __init eseqiv_module_init(void);
  69 void __exit eseqiv_module_exit(void);
  70 int __init chainiv_module_init(void);
  71 void chainiv_module_exit(void);
  72
  73 static inline struct crypto_ablkcipher *skcipher_geniv_cipher(
  74         struct crypto_ablkcipher *geniv)
  75 {
  76         return crypto_ablkcipher_crt(geniv)->base;
  77 }
  78
  79 static inline int skcipher_enqueue_givcrypt(
  80         struct crypto_queue *queue, struct skcipher_givcrypt_request *request)
  81 {
  82         return ablkcipher_enqueue_request(queue, &request->creq);
  83 }
  84
  85 static inline struct skcipher_givcrypt_request *skcipher_dequeue_givcrypt(
  86         struct crypto_queue *queue)
  87 {
  88         return container_of(ablkcipher_dequeue_request(queue),
  89                             struct skcipher_givcrypt_request, creq);
  90 }
  91
  92 static inline void *skcipher_givcrypt_reqctx(
  93         struct skcipher_givcrypt_request *req)
  94 {
  95         return ablkcipher_request_ctx(&req->creq);
  96 }
  97
  98 static inline void ablkcipher_request_complete(struct ablkcipher_request *req,
  99                                                int err)
 100 {
 101         req->base.complete(&req->base, err);
 102 }
 103
 104 static inline void skcipher_givcrypt_complete(
 105         struct skcipher_givcrypt_request *req, int err)
 106 {
 107         ablkcipher_request_complete(&req->creq, err);
 108 }
 109
 110 static inline u32 ablkcipher_request_flags(struct ablkcipher_request *req)
 111 {
 112         return req->base.flags;
 113 }
 114
 115 #endif  /* _CRYPTO_INTERNAL_SKCIPHER_H */
 116