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 struct crypto_alg *crypto_lookup_skcipher(const char *name, u32 type, u32 mask);
  38
  39 static inline void crypto_drop_skcipher(struct crypto_skcipher_spawn *spawn)
  40 {
  41         crypto_drop_spawn(&spawn->base);
  42 }
  43
  44 static inline struct crypto_alg *crypto_skcipher_spawn_alg(
  45         struct crypto_skcipher_spawn *spawn)
  46 {
  47         return spawn->base.alg;
  48 }
  49
  50 static inline struct crypto_ablkcipher *crypto_spawn_skcipher(
  51         struct crypto_skcipher_spawn *spawn)
  52 {
  53         return __crypto_ablkcipher_cast(
  54                 crypto_spawn_tfm(&spawn->base, crypto_skcipher_type(0),
  55                                  crypto_skcipher_mask(0)));
  56 }
  57
  58 int skcipher_null_givencrypt(struct skcipher_givcrypt_request *req);
  59 int skcipher_null_givdecrypt(struct skcipher_givcrypt_request *req);
  60 const char *crypto_default_geniv(const struct crypto_alg *alg);
  61
  62 struct crypto_instance *skcipher_geniv_alloc(struct crypto_template *tmpl,
  63                                              struct rtattr **tb, u32 type,
  64                                              u32 mask);
  65 void skcipher_geniv_free(struct crypto_instance *inst);
  66 int skcipher_geniv_init(struct crypto_tfm *tfm);
  67 void skcipher_geniv_exit(struct crypto_tfm *tfm);
  68
  69 static inline struct crypto_ablkcipher *skcipher_geniv_cipher(
  70         struct crypto_ablkcipher *geniv)
  71 {
  72         return crypto_ablkcipher_crt(geniv)->base;
  73 }
  74
  75 static inline int skcipher_enqueue_givcrypt(
  76         struct crypto_queue *queue, struct skcipher_givcrypt_request *request)
  77 {
  78         return ablkcipher_enqueue_request(queue, &request->creq);
  79 }
  80
  81 static inline struct skcipher_givcrypt_request *skcipher_dequeue_givcrypt(
  82         struct crypto_queue *queue)
  83 {
  84         return __crypto_dequeue_request(
  85                 queue, offsetof(struct skcipher_givcrypt_request, creq.base));
  86 }
  87
  88 static inline void *skcipher_givcrypt_reqctx(
  89         struct skcipher_givcrypt_request *req)
  90 {
  91         return ablkcipher_request_ctx(&req->creq);
  92 }
  93
  94 static inline void ablkcipher_request_complete(struct ablkcipher_request *req,
  95                                                int err)
  96 {
  97         req->base.complete(&req->base, err);
  98 }
  99
 100 static inline void skcipher_givcrypt_complete(
 101         struct skcipher_givcrypt_request *req, int err)
 102 {
 103         ablkcipher_request_complete(&req->creq, err);
 104 }
 105
 106 static inline u32 ablkcipher_request_flags(struct ablkcipher_request *req)
 107 {
 108         return req->base.flags;
 109 }
 110
 111 #endif  /* _CRYPTO_INTERNAL_SKCIPHER_H */
 112