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cce9e06d HX |
1 | /* |
2 | * Cryptographic API for algorithms (i.e., low-level API). | |
3 | * | |
4 | * Copyright (c) 2006 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 | #ifndef _CRYPTO_ALGAPI_H | |
13 | #define _CRYPTO_ALGAPI_H | |
14 | ||
15 | #include <linux/crypto.h> | |
16 | ||
4cc7720c | 17 | struct module; |
e853c3cf HX |
18 | struct seq_file; |
19 | ||
20 | struct crypto_type { | |
21 | unsigned int (*ctxsize)(struct crypto_alg *alg); | |
22 | int (*init)(struct crypto_tfm *tfm); | |
23 | void (*exit)(struct crypto_tfm *tfm); | |
24 | void (*show)(struct seq_file *m, struct crypto_alg *alg); | |
25 | }; | |
4cc7720c HX |
26 | |
27 | struct crypto_instance { | |
28 | struct crypto_alg alg; | |
29 | ||
30 | struct crypto_template *tmpl; | |
31 | struct hlist_node list; | |
32 | ||
33 | void *__ctx[] CRYPTO_MINALIGN_ATTR; | |
34 | }; | |
35 | ||
36 | struct crypto_template { | |
37 | struct list_head list; | |
38 | struct hlist_head instances; | |
39 | struct module *module; | |
40 | ||
41 | struct crypto_instance *(*alloc)(void *param, unsigned int len); | |
42 | void (*free)(struct crypto_instance *inst); | |
43 | ||
44 | char name[CRYPTO_MAX_ALG_NAME]; | |
45 | }; | |
46 | ||
6bfd4809 HX |
47 | struct crypto_spawn { |
48 | struct list_head list; | |
49 | struct crypto_alg *alg; | |
50 | struct crypto_instance *inst; | |
51 | }; | |
52 | ||
5c64097a HX |
53 | struct scatter_walk { |
54 | struct scatterlist *sg; | |
55 | unsigned int offset; | |
56 | }; | |
57 | ||
4cc7720c HX |
58 | int crypto_register_template(struct crypto_template *tmpl); |
59 | void crypto_unregister_template(struct crypto_template *tmpl); | |
60 | struct crypto_template *crypto_lookup_template(const char *name); | |
61 | ||
6bfd4809 HX |
62 | int crypto_init_spawn(struct crypto_spawn *spawn, struct crypto_alg *alg, |
63 | struct crypto_instance *inst); | |
64 | void crypto_drop_spawn(struct crypto_spawn *spawn); | |
65 | struct crypto_tfm *crypto_spawn_tfm(struct crypto_spawn *spawn); | |
66 | ||
7fed0bf2 HX |
67 | struct crypto_alg *crypto_get_attr_alg(void *param, unsigned int len, |
68 | u32 type, u32 mask); | |
69 | struct crypto_instance *crypto_alloc_instance(const char *name, | |
70 | struct crypto_alg *alg); | |
71 | ||
4cc7720c HX |
72 | static inline void *crypto_instance_ctx(struct crypto_instance *inst) |
73 | { | |
74 | return inst->__ctx; | |
75 | } | |
76 | ||
f28776a3 HX |
77 | static inline struct cipher_alg *crypto_cipher_alg(struct crypto_cipher *tfm) |
78 | { | |
79 | return &crypto_cipher_tfm(tfm)->__crt_alg->cra_cipher; | |
80 | } | |
81 | ||
cce9e06d HX |
82 | #endif /* _CRYPTO_ALGAPI_H */ |
83 |