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/init.h>
19 #include <linux/types.h>
20
21 struct rtattr;
22
23 struct crypto_skcipher_spawn {
24 struct crypto_spawn base;
25 };
26
27 extern const struct crypto_type crypto_givcipher_type;
28
29 static inline void crypto_set_skcipher_spawn(
30 struct crypto_skcipher_spawn *spawn, struct crypto_instance *inst)
31 {
32 crypto_set_spawn(&spawn->base, inst);
33 }
34
35 int crypto_grab_skcipher(struct crypto_skcipher_spawn *spawn, const char *name,
36 u32 type, u32 mask);
37
38 static inline void crypto_drop_skcipher(struct crypto_skcipher_spawn *spawn)
39 {
40 crypto_drop_spawn(&spawn->base);
41 }
42
43 static inline struct crypto_alg *crypto_skcipher_spawn_alg(
44 struct crypto_skcipher_spawn *spawn)
45 {
46 return spawn->base.alg;
47 }
48
49 static inline struct crypto_ablkcipher *crypto_spawn_skcipher(
50 struct crypto_skcipher_spawn *spawn)
51 {
52 return __crypto_ablkcipher_cast(
53 crypto_spawn_tfm(&spawn->base, crypto_skcipher_type(0),
54 crypto_skcipher_mask(0)));
55 }
56
57 int skcipher_null_givencrypt(struct skcipher_givcrypt_request *req);
58 int skcipher_null_givdecrypt(struct skcipher_givcrypt_request *req);
59 const char *crypto_default_geniv(const struct crypto_alg *alg);
60
61 struct crypto_instance *skcipher_geniv_alloc(struct crypto_template *tmpl,
62 struct rtattr **tb, u32 type,
63 u32 mask);
64 void skcipher_geniv_free(struct crypto_instance *inst);
65 int skcipher_geniv_init(struct crypto_tfm *tfm);
66 void skcipher_geniv_exit(struct crypto_tfm *tfm);
67
68 int __init eseqiv_module_init(void);
69 void __exit eseqiv_module_exit(void);
70 int __init chainiv_module_init(void);
71 void chainiv_module_exit(void);
72
73 static inline struct crypto_ablkcipher *skcipher_geniv_cipher(
74 struct crypto_ablkcipher *geniv)
75 {
76 return crypto_ablkcipher_crt(geniv)->base;
77 }
78
79 static inline int skcipher_enqueue_givcrypt(
80 struct crypto_queue *queue, struct skcipher_givcrypt_request *request)
81 {
82 return ablkcipher_enqueue_request(queue, &request->creq);
83 }
84
85 static inline struct skcipher_givcrypt_request *skcipher_dequeue_givcrypt(
86 struct crypto_queue *queue)
87 {
88 return container_of(ablkcipher_dequeue_request(queue),
89 struct skcipher_givcrypt_request, creq);
90 }
91
92 static inline void *skcipher_givcrypt_reqctx(
93 struct skcipher_givcrypt_request *req)
94 {
95 return ablkcipher_request_ctx(&req->creq);
96 }
97
98 static inline void ablkcipher_request_complete(struct ablkcipher_request *req,
99 int err)
100 {
101 req->base.complete(&req->base, err);
102 }
103
104 static inline void skcipher_givcrypt_complete(
105 struct skcipher_givcrypt_request *req, int err)
106 {
107 ablkcipher_request_complete(&req->creq, err);
108 }
109
110 static inline u32 ablkcipher_request_flags(struct ablkcipher_request *req)
111 {
112 return req->base.flags;
113 }
114
115 #endif /* _CRYPTO_INTERNAL_SKCIPHER_H */
116
117
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