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/types.h>
  19
  20 struct rtattr;
  21
  22 struct crypto_skcipher_spawn {
  23         struct crypto_spawn base;
  24 };
  25
  26 extern const struct crypto_type crypto_givcipher_type;
  27
  28 static inline void crypto_set_skcipher_spawn(
  29         struct crypto_skcipher_spawn *spawn, struct crypto_instance *inst)
  30 {
  31         crypto_set_spawn(&spawn->base, inst);
  32 }
  33
  34 int crypto_grab_skcipher(struct crypto_skcipher_spawn *spawn, const char *name,
  35                          u32 type, u32 mask);
  36
  37 static inline void crypto_drop_skcipher(struct crypto_skcipher_spawn *spawn)
  38 {
  39         crypto_drop_spawn(&spawn->base);
  40 }
  41
  42 static inline struct crypto_alg *crypto_skcipher_spawn_alg(
  43         struct crypto_skcipher_spawn *spawn)
  44 {
  45         return spawn->base.alg;
  46 }
  47
  48 static inline struct crypto_ablkcipher *crypto_spawn_skcipher(
  49         struct crypto_skcipher_spawn *spawn)
  50 {
  51         return __crypto_ablkcipher_cast(
  52                 crypto_spawn_tfm(&spawn->base, crypto_skcipher_type(0),
  53                                  crypto_skcipher_mask(0)));
  54 }
  55
  56 int skcipher_null_givencrypt(struct skcipher_givcrypt_request *req);
  57 int skcipher_null_givdecrypt(struct skcipher_givcrypt_request *req);
  58 const char *crypto_default_geniv(const struct crypto_alg *alg);
  59
  60 struct crypto_instance *skcipher_geniv_alloc(struct crypto_template *tmpl,
  61                                              struct rtattr **tb, u32 type,
  62                                              u32 mask);
  63 void skcipher_geniv_free(struct crypto_instance *inst);
  64 int skcipher_geniv_init(struct crypto_tfm *tfm);
  65 void skcipher_geniv_exit(struct crypto_tfm *tfm);
  66
  67 static inline struct crypto_ablkcipher *skcipher_geniv_cipher(
  68         struct crypto_ablkcipher *geniv)
  69 {
  70         return crypto_ablkcipher_crt(geniv)->base;
  71 }
  72
  73 static inline int skcipher_enqueue_givcrypt(
  74         struct crypto_queue *queue, struct skcipher_givcrypt_request *request)
  75 {
  76         return ablkcipher_enqueue_request(queue, &request->creq);
  77 }
  78
  79 static inline struct skcipher_givcrypt_request *skcipher_dequeue_givcrypt(
  80         struct crypto_queue *queue)
  81 {
  82         return __crypto_dequeue_request(
  83                 queue, offsetof(struct skcipher_givcrypt_request, creq.base));
  84 }
  85
  86 static inline void *skcipher_givcrypt_reqctx(
  87         struct skcipher_givcrypt_request *req)
  88 {
  89         return ablkcipher_request_ctx(&req->creq);
  90 }
  91
  92 static inline void ablkcipher_request_complete(struct ablkcipher_request *req,
  93                                                int err)
  94 {
  95         req->base.complete(&req->base, err);
  96 }
  97
  98 static inline void skcipher_givcrypt_complete(
  99         struct skcipher_givcrypt_request *req, int err)
 100 {
 101         ablkcipher_request_complete(&req->creq, err);
 102 }
 103
 104 static inline u32 ablkcipher_request_flags(struct ablkcipher_request *req)
 105 {
 106         return req->base.flags;
 107 }
 108
 109 #endif  /* _CRYPTO_INTERNAL_SKCIPHER_H */
 110