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Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
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linux
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/stddef.h>
19#include <linux/types.h>
20
21struct rtattr;
22
23struct aead_instance {
24 union {
25 struct {
26 char head[offsetof(struct aead_alg, base)];
27 struct crypto_instance base;
28 } s;
29 struct aead_alg alg;
30 };
31};
32
33struct crypto_aead_spawn {
34 struct crypto_spawn base;
35};
36
37extern const struct crypto_type crypto_aead_type;
38extern const struct crypto_type crypto_nivaead_type;
39
40static inline void *crypto_aead_ctx(struct crypto_aead *tfm)
41{
42 return crypto_tfm_ctx(&tfm->base);
43}
44
45static inline struct crypto_instance *crypto_aead_alg_instance(
46 struct crypto_aead *aead)
47{
48 return crypto_tfm_alg_instance(&aead->base);
49}
50
51static inline struct crypto_instance *aead_crypto_instance(
52 struct aead_instance *inst)
53{
54 return container_of(&inst->alg.base, struct crypto_instance, alg);
55}
56
57static inline struct aead_instance *aead_instance(struct crypto_instance *inst)
58{
59 return container_of(&inst->alg, struct aead_instance, alg.base);
60}
61
62static inline struct aead_instance *aead_alg_instance(struct crypto_aead *aead)
63{
64 return aead_instance(crypto_aead_alg_instance(aead));
65}
66
67static inline void *aead_instance_ctx(struct aead_instance *inst)
68{
69 return crypto_instance_ctx(aead_crypto_instance(inst));
70}
71
72static inline void *aead_request_ctx(struct aead_request *req)
73{
74 return req->__ctx;
75}
76
77static inline void aead_request_complete(struct aead_request *req, int err)
78{
79 req->base.complete(&req->base, err);
80}
81
82static inline u32 aead_request_flags(struct aead_request *req)
83{
84 return req->base.flags;
85}
86
87static inline void crypto_set_aead_spawn(
88 struct crypto_aead_spawn *spawn, struct crypto_instance *inst)
89{
90 crypto_set_spawn(&spawn->base, inst);
91}
92
93struct crypto_alg *crypto_lookup_aead(const char *name, u32 type, u32 mask);
94
95int crypto_grab_aead(struct crypto_aead_spawn *spawn, const char *name,
96 u32 type, u32 mask);
97
98static inline void crypto_drop_aead(struct crypto_aead_spawn *spawn)
99{
100 crypto_drop_spawn(&spawn->base);
101}
102
103static inline struct crypto_alg *crypto_aead_spawn_alg(
104 struct crypto_aead_spawn *spawn)
105{
106 return spawn->base.alg;
107}
108
109static inline struct aead_alg *crypto_spawn_aead_alg(
110 struct crypto_aead_spawn *spawn)
111{
112 return container_of(spawn->base.alg, struct aead_alg, base);
113}
114
115static inline struct crypto_aead *crypto_spawn_aead(
116 struct crypto_aead_spawn *spawn)
117{
118 return crypto_spawn_tfm2(&spawn->base);
119}
120
121struct aead_instance *aead_geniv_alloc(struct crypto_template *tmpl,
122 struct rtattr **tb, u32 type, u32 mask);
123void aead_geniv_free(struct aead_instance *inst);
124int aead_geniv_init(struct crypto_tfm *tfm);
125void aead_geniv_exit(struct crypto_tfm *tfm);
126
127static inline struct crypto_aead *aead_geniv_base(struct crypto_aead *geniv)
128{
129 return geniv->child;
130}
131
132static inline void *aead_givcrypt_reqctx(struct aead_givcrypt_request *req)
133{
134 return aead_request_ctx(&req->areq);
135}
136
137static inline void aead_givcrypt_complete(struct aead_givcrypt_request *req,
138 int err)
139{
140 aead_request_complete(&req->areq, err);
141}
142
143static inline void crypto_aead_set_reqsize(struct crypto_aead *aead,
144 unsigned int reqsize)
145{
146 crypto_aead_crt(aead)->reqsize = reqsize;
147}
148
149static inline unsigned int crypto_aead_alg_maxauthsize(struct aead_alg *alg)
150{
151 return alg->base.cra_aead.encrypt ? alg->base.cra_aead.maxauthsize :
152 alg->maxauthsize;
153}
154
155static inline unsigned int crypto_aead_maxauthsize(struct crypto_aead *aead)
156{
157 return crypto_aead_alg_maxauthsize(crypto_aead_alg(aead));
158}
159
160int crypto_register_aead(struct aead_alg *alg);
161void crypto_unregister_aead(struct aead_alg *alg);
162int crypto_register_aeads(struct aead_alg *algs, int count);
163void crypto_unregister_aeads(struct aead_alg *algs, int count);
164int aead_register_instance(struct crypto_template *tmpl,
165 struct aead_instance *inst);
166
167#endif /* _CRYPTO_INTERNAL_AEAD_H */
168