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18e33e6d HX |
1 | /* |
2 | * Hash: Hash algorithms under the crypto API | |
3 | * | |
4 | * Copyright (c) 2008 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_HASH_H | |
14 | #define _CRYPTO_HASH_H | |
15 | ||
16 | #include <linux/crypto.h> | |
17 | ||
18 | struct crypto_ahash { | |
19 | struct crypto_tfm base; | |
20 | }; | |
21 | ||
22 | static inline struct crypto_ahash *__crypto_ahash_cast(struct crypto_tfm *tfm) | |
23 | { | |
24 | return (struct crypto_ahash *)tfm; | |
25 | } | |
26 | ||
27 | static inline struct crypto_ahash *crypto_alloc_ahash(const char *alg_name, | |
28 | u32 type, u32 mask) | |
29 | { | |
30 | type &= ~CRYPTO_ALG_TYPE_MASK; | |
31 | mask &= ~CRYPTO_ALG_TYPE_MASK; | |
32 | type |= CRYPTO_ALG_TYPE_AHASH; | |
33 | mask |= CRYPTO_ALG_TYPE_AHASH_MASK; | |
34 | ||
35 | return __crypto_ahash_cast(crypto_alloc_base(alg_name, type, mask)); | |
36 | } | |
37 | ||
38 | static inline struct crypto_tfm *crypto_ahash_tfm(struct crypto_ahash *tfm) | |
39 | { | |
40 | return &tfm->base; | |
41 | } | |
42 | ||
43 | static inline void crypto_free_ahash(struct crypto_ahash *tfm) | |
44 | { | |
45 | crypto_free_tfm(crypto_ahash_tfm(tfm)); | |
46 | } | |
47 | ||
48 | static inline unsigned int crypto_ahash_alignmask( | |
49 | struct crypto_ahash *tfm) | |
50 | { | |
51 | return crypto_tfm_alg_alignmask(crypto_ahash_tfm(tfm)); | |
52 | } | |
53 | ||
54 | static inline struct ahash_tfm *crypto_ahash_crt(struct crypto_ahash *tfm) | |
55 | { | |
56 | return &crypto_ahash_tfm(tfm)->crt_ahash; | |
57 | } | |
58 | ||
59 | static inline unsigned int crypto_ahash_digestsize(struct crypto_ahash *tfm) | |
60 | { | |
61 | return crypto_ahash_crt(tfm)->digestsize; | |
62 | } | |
63 | ||
64 | static inline u32 crypto_ahash_get_flags(struct crypto_ahash *tfm) | |
65 | { | |
66 | return crypto_tfm_get_flags(crypto_ahash_tfm(tfm)); | |
67 | } | |
68 | ||
69 | static inline void crypto_ahash_set_flags(struct crypto_ahash *tfm, u32 flags) | |
70 | { | |
71 | crypto_tfm_set_flags(crypto_ahash_tfm(tfm), flags); | |
72 | } | |
73 | ||
74 | static inline void crypto_ahash_clear_flags(struct crypto_ahash *tfm, u32 flags) | |
75 | { | |
76 | crypto_tfm_clear_flags(crypto_ahash_tfm(tfm), flags); | |
77 | } | |
78 | ||
79 | static inline struct crypto_ahash *crypto_ahash_reqtfm( | |
80 | struct ahash_request *req) | |
81 | { | |
82 | return __crypto_ahash_cast(req->base.tfm); | |
83 | } | |
84 | ||
85 | static inline unsigned int crypto_ahash_reqsize(struct crypto_ahash *tfm) | |
86 | { | |
87 | return crypto_ahash_crt(tfm)->reqsize; | |
88 | } | |
89 | ||
90 | static inline int crypto_ahash_setkey(struct crypto_ahash *tfm, | |
91 | const u8 *key, unsigned int keylen) | |
92 | { | |
93 | struct ahash_tfm *crt = crypto_ahash_crt(tfm); | |
94 | ||
95 | return crt->setkey(tfm, key, keylen); | |
96 | } | |
97 | ||
98 | static inline int crypto_ahash_digest(struct ahash_request *req) | |
99 | { | |
100 | struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req)); | |
101 | return crt->digest(req); | |
102 | } | |
103 | ||
318e5313 HX |
104 | static inline int crypto_ahash_init(struct ahash_request *req) |
105 | { | |
106 | struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req)); | |
107 | return crt->init(req); | |
108 | } | |
109 | ||
110 | static inline int crypto_ahash_update(struct ahash_request *req) | |
111 | { | |
112 | struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req)); | |
113 | return crt->update(req); | |
114 | } | |
115 | ||
116 | static inline int crypto_ahash_final(struct ahash_request *req) | |
117 | { | |
118 | struct ahash_tfm *crt = crypto_ahash_crt(crypto_ahash_reqtfm(req)); | |
119 | return crt->final(req); | |
120 | } | |
121 | ||
18e33e6d HX |
122 | static inline void ahash_request_set_tfm(struct ahash_request *req, |
123 | struct crypto_ahash *tfm) | |
124 | { | |
125 | req->base.tfm = crypto_ahash_tfm(tfm); | |
126 | } | |
127 | ||
128 | static inline struct ahash_request *ahash_request_alloc( | |
129 | struct crypto_ahash *tfm, gfp_t gfp) | |
130 | { | |
131 | struct ahash_request *req; | |
132 | ||
133 | req = kmalloc(sizeof(struct ahash_request) + | |
134 | crypto_ahash_reqsize(tfm), gfp); | |
135 | ||
136 | if (likely(req)) | |
137 | ahash_request_set_tfm(req, tfm); | |
138 | ||
139 | return req; | |
140 | } | |
141 | ||
142 | static inline void ahash_request_free(struct ahash_request *req) | |
143 | { | |
144 | kfree(req); | |
145 | } | |
146 | ||
147 | static inline struct ahash_request *ahash_request_cast( | |
148 | struct crypto_async_request *req) | |
149 | { | |
150 | return container_of(req, struct ahash_request, base); | |
151 | } | |
152 | ||
153 | static inline void ahash_request_set_callback(struct ahash_request *req, | |
154 | u32 flags, | |
155 | crypto_completion_t complete, | |
156 | void *data) | |
157 | { | |
158 | req->base.complete = complete; | |
159 | req->base.data = data; | |
160 | req->base.flags = flags; | |
161 | } | |
162 | ||
163 | static inline void ahash_request_set_crypt(struct ahash_request *req, | |
164 | struct scatterlist *src, u8 *result, | |
165 | unsigned int nbytes) | |
166 | { | |
167 | req->src = src; | |
168 | req->nbytes = nbytes; | |
169 | req->result = result; | |
170 | } | |
171 | ||
172 | #endif /* _CRYPTO_HASH_H */ |