kernel/include/crypto/internal/aead.h

   1 /*
   2  * AEAD: Authenticated Encryption with Associated Data
   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_AEAD_H
  14 #define _CRYPTO_INTERNAL_AEAD_H
  15
  16 #include <crypto/aead.h>
  17 #include <crypto/algapi.h>
  18 #include <linux/types.h>
  19
  20 struct rtattr;
  21
  22 struct crypto_aead_spawn {
  23         struct crypto_spawn base;
  24 };
  25
  26 extern const struct crypto_type crypto_nivaead_type;
  27
  28 static inline void crypto_set_aead_spawn(
  29         struct crypto_aead_spawn *spawn, struct crypto_instance *inst)
  30 {
  31         crypto_set_spawn(&spawn->base, inst);
  32 }
  33
  34 struct crypto_alg *crypto_lookup_aead(const char *name, u32 type, u32 mask);
  35
  36 int crypto_grab_aead(struct crypto_aead_spawn *spawn, const char *name,
  37                      u32 type, u32 mask);
  38
  39 static inline void crypto_drop_aead(struct crypto_aead_spawn *spawn)
  40 {
  41         crypto_drop_spawn(&spawn->base);
  42 }
  43
  44 static inline struct crypto_alg *crypto_aead_spawn_alg(
  45         struct crypto_aead_spawn *spawn)
  46 {
  47         return spawn->base.alg;
  48 }
  49
  50 static inline struct crypto_aead *crypto_spawn_aead(
  51         struct crypto_aead_spawn *spawn)
  52 {
  53         return __crypto_aead_cast(
  54                 crypto_spawn_tfm(&spawn->base, CRYPTO_ALG_TYPE_AEAD,
  55                                  CRYPTO_ALG_TYPE_MASK));
  56 }
  57
  58 struct crypto_instance *aead_geniv_alloc(struct crypto_template *tmpl,
  59                                          struct rtattr **tb, u32 type,
  60                                          u32 mask);
  61 void aead_geniv_free(struct crypto_instance *inst);
  62 int aead_geniv_init(struct crypto_tfm *tfm);
  63 void aead_geniv_exit(struct crypto_tfm *tfm);
  64
  65 static inline struct crypto_aead *aead_geniv_base(struct crypto_aead *geniv)
  66 {
  67         return crypto_aead_crt(geniv)->base;
  68 }
  69
  70 static inline void *aead_givcrypt_reqctx(struct aead_givcrypt_request *req)
  71 {
  72         return aead_request_ctx(&req->areq);
  73 }
  74
  75 static inline void aead_givcrypt_complete(struct aead_givcrypt_request *req,
  76                                           int err)
  77 {
  78         aead_request_complete(&req->areq, err);
  79 }
  80
  81 #endif  /* _CRYPTO_INTERNAL_AEAD_H */
  82