4614f795f8bc624c2ea41f1d8f4176cf5d02c0d5
[firefly-linux-kernel-4.4.55.git] / 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_aead_type;
27 extern const struct crypto_type crypto_nivaead_type;
28
29 static inline struct old_aead_alg *crypto_old_aead_alg(struct crypto_aead *tfm)
30 {
31         return &crypto_aead_tfm(tfm)->__crt_alg->cra_aead;
32 }
33
34 static inline struct aead_alg *crypto_aead_alg(struct crypto_aead *tfm)
35 {
36         return &crypto_aead_tfm(tfm)->__crt_alg->cra_aead;
37 }
38
39 static inline void *crypto_aead_ctx(struct crypto_aead *tfm)
40 {
41         return crypto_tfm_ctx(&tfm->base);
42 }
43
44 static inline struct crypto_instance *crypto_aead_alg_instance(
45         struct crypto_aead *aead)
46 {
47         return crypto_tfm_alg_instance(&aead->base);
48 }
49
50 static inline void *aead_request_ctx(struct aead_request *req)
51 {
52         return req->__ctx;
53 }
54
55 static inline void aead_request_complete(struct aead_request *req, int err)
56 {
57         req->base.complete(&req->base, err);
58 }
59
60 static inline u32 aead_request_flags(struct aead_request *req)
61 {
62         return req->base.flags;
63 }
64
65 static inline void crypto_set_aead_spawn(
66         struct crypto_aead_spawn *spawn, struct crypto_instance *inst)
67 {
68         crypto_set_spawn(&spawn->base, inst);
69 }
70
71 struct crypto_alg *crypto_lookup_aead(const char *name, u32 type, u32 mask);
72
73 int crypto_grab_aead(struct crypto_aead_spawn *spawn, const char *name,
74                      u32 type, u32 mask);
75
76 static inline void crypto_drop_aead(struct crypto_aead_spawn *spawn)
77 {
78         crypto_drop_spawn(&spawn->base);
79 }
80
81 static inline struct crypto_alg *crypto_aead_spawn_alg(
82         struct crypto_aead_spawn *spawn)
83 {
84         return spawn->base.alg;
85 }
86
87 static inline struct crypto_aead *crypto_spawn_aead(
88         struct crypto_aead_spawn *spawn)
89 {
90         return crypto_spawn_tfm2(&spawn->base);
91 }
92
93 struct crypto_instance *aead_geniv_alloc(struct crypto_template *tmpl,
94                                          struct rtattr **tb, u32 type,
95                                          u32 mask);
96 void aead_geniv_free(struct crypto_instance *inst);
97 int aead_geniv_init(struct crypto_tfm *tfm);
98 void aead_geniv_exit(struct crypto_tfm *tfm);
99
100 static inline struct crypto_aead *aead_geniv_base(struct crypto_aead *geniv)
101 {
102         return geniv->child;
103 }
104
105 static inline void *aead_givcrypt_reqctx(struct aead_givcrypt_request *req)
106 {
107         return aead_request_ctx(&req->areq);
108 }
109
110 static inline void aead_givcrypt_complete(struct aead_givcrypt_request *req,
111                                           int err)
112 {
113         aead_request_complete(&req->areq, err);
114 }
115
116 static inline void crypto_aead_set_reqsize(struct crypto_aead *aead,
117                                            unsigned int reqsize)
118 {
119         crypto_aead_crt(aead)->reqsize = reqsize;
120 }
121
122 static inline unsigned int crypto_aead_maxauthsize(struct crypto_aead *aead)
123 {
124         return crypto_old_aead_alg(aead)->maxauthsize;
125 }
126
127 #endif  /* _CRYPTO_INTERNAL_AEAD_H */
128