Root/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
20struct rtattr;
21
22struct crypto_skcipher_spawn {
23    struct crypto_spawn base;
24};
25
26extern const struct crypto_type crypto_givcipher_type;
27
28static 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
34int crypto_grab_skcipher(struct crypto_skcipher_spawn *spawn, const char *name,
35             u32 type, u32 mask);
36
37struct crypto_alg *crypto_lookup_skcipher(const char *name, u32 type, u32 mask);
38
39static inline void crypto_drop_skcipher(struct crypto_skcipher_spawn *spawn)
40{
41    crypto_drop_spawn(&spawn->base);
42}
43
44static inline struct crypto_alg *crypto_skcipher_spawn_alg(
45    struct crypto_skcipher_spawn *spawn)
46{
47    return spawn->base.alg;
48}
49
50static 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
58int skcipher_null_givencrypt(struct skcipher_givcrypt_request *req);
59int skcipher_null_givdecrypt(struct skcipher_givcrypt_request *req);
60const char *crypto_default_geniv(const struct crypto_alg *alg);
61
62struct crypto_instance *skcipher_geniv_alloc(struct crypto_template *tmpl,
63                         struct rtattr **tb, u32 type,
64                         u32 mask);
65void skcipher_geniv_free(struct crypto_instance *inst);
66int skcipher_geniv_init(struct crypto_tfm *tfm);
67void skcipher_geniv_exit(struct crypto_tfm *tfm);
68
69static inline struct crypto_ablkcipher *skcipher_geniv_cipher(
70    struct crypto_ablkcipher *geniv)
71{
72    return crypto_ablkcipher_crt(geniv)->base;
73}
74
75static 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
81static 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
88static inline void *skcipher_givcrypt_reqctx(
89    struct skcipher_givcrypt_request *req)
90{
91    return ablkcipher_request_ctx(&req->creq);
92}
93
94static inline void ablkcipher_request_complete(struct ablkcipher_request *req,
95                           int err)
96{
97    req->base.complete(&req->base, err);
98}
99
100static inline void skcipher_givcrypt_complete(
101    struct skcipher_givcrypt_request *req, int err)
102{
103    ablkcipher_request_complete(&req->creq, err);
104}
105
106static inline u32 ablkcipher_request_flags(struct ablkcipher_request *req)
107{
108    return req->base.flags;
109}
110
111#endif /* _CRYPTO_INTERNAL_SKCIPHER_H */
112
113

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