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