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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 | ||
88056ec3 HX |
18 | struct crypto_ahash; |
19 | ||
20 | struct hash_alg_common { | |
21 | unsigned int digestsize; | |
22 | unsigned int statesize; | |
23 | ||
24 | struct crypto_alg base; | |
25 | }; | |
26 | ||
27 | struct ahash_request { | |
28 | struct crypto_async_request base; | |
29 | ||
30 | unsigned int nbytes; | |
31 | struct scatterlist *src; | |
32 | u8 *result; | |
33 | ||
66f6ce5e HX |
34 | /* This field may only be used by the ahash API code. */ |
35 | void *priv; | |
36 | ||
88056ec3 HX |
37 | void *__ctx[] CRYPTO_MINALIGN_ATTR; |
38 | }; | |
39 | ||
40 | struct ahash_alg { | |
41 | int (*init)(struct ahash_request *req); | |
42 | int (*update)(struct ahash_request *req); | |
43 | int (*final)(struct ahash_request *req); | |
44 | int (*finup)(struct ahash_request *req); | |
45 | int (*digest)(struct ahash_request *req); | |
46 | int (*export)(struct ahash_request *req, void *out); | |
47 | int (*import)(struct ahash_request *req, const void *in); | |
48 | int (*setkey)(struct crypto_ahash *tfm, const u8 *key, | |
49 | unsigned int keylen); | |
50 | ||
51 | struct hash_alg_common halg; | |
52 | }; | |
53 | ||
7b5a080b HX |
54 | struct shash_desc { |
55 | struct crypto_shash *tfm; | |
56 | u32 flags; | |
57 | ||
58 | void *__ctx[] CRYPTO_MINALIGN_ATTR; | |
59 | }; | |
60 | ||
61 | struct shash_alg { | |
62 | int (*init)(struct shash_desc *desc); | |
63 | int (*update)(struct shash_desc *desc, const u8 *data, | |
64 | unsigned int len); | |
65 | int (*final)(struct shash_desc *desc, u8 *out); | |
66 | int (*finup)(struct shash_desc *desc, const u8 *data, | |
67 | unsigned int len, u8 *out); | |
68 | int (*digest)(struct shash_desc *desc, const u8 *data, | |
69 | unsigned int len, u8 *out); | |
99d27e1c HX |
70 | int (*export)(struct shash_desc *desc, void *out); |
71 | int (*import)(struct shash_desc *desc, const void *in); | |
7b5a080b HX |
72 | int (*setkey)(struct crypto_shash *tfm, const u8 *key, |
73 | unsigned int keylen); | |
74 | ||
75 | unsigned int descsize; | |
88056ec3 HX |
76 | |
77 | /* These fields must match hash_alg_common. */ | |
7b5a080b | 78 | unsigned int digestsize; |
99d27e1c | 79 | unsigned int statesize; |
7b5a080b HX |
80 | |
81 | struct crypto_alg base; | |
82 | }; | |
83 | ||
18e33e6d | 84 | struct crypto_ahash { |
88056ec3 HX |
85 | int (*init)(struct ahash_request *req); |
86 | int (*update)(struct ahash_request *req); | |
87 | int (*final)(struct ahash_request *req); | |
88 | int (*finup)(struct ahash_request *req); | |
89 | int (*digest)(struct ahash_request *req); | |
90 | int (*export)(struct ahash_request *req, void *out); | |
91 | int (*import)(struct ahash_request *req, const void *in); | |
92 | int (*setkey)(struct crypto_ahash *tfm, const u8 *key, | |
93 | unsigned int keylen); | |
94 | ||
88056ec3 | 95 | unsigned int reqsize; |
18e33e6d HX |
96 | struct crypto_tfm base; |
97 | }; | |
98 | ||
7b5a080b | 99 | struct crypto_shash { |
113adefc | 100 | unsigned int descsize; |
7b5a080b HX |
101 | struct crypto_tfm base; |
102 | }; | |
103 | ||
18e33e6d HX |
104 | static inline struct crypto_ahash *__crypto_ahash_cast(struct crypto_tfm *tfm) |
105 | { | |
88056ec3 | 106 | return container_of(tfm, struct crypto_ahash, base); |
18e33e6d HX |
107 | } |
108 | ||
88056ec3 HX |
109 | struct crypto_ahash *crypto_alloc_ahash(const char *alg_name, u32 type, |
110 | u32 mask); | |
18e33e6d HX |
111 | |
112 | static inline struct crypto_tfm *crypto_ahash_tfm(struct crypto_ahash *tfm) | |
113 | { | |
114 | return &tfm->base; | |
115 | } | |
116 | ||
117 | static inline void crypto_free_ahash(struct crypto_ahash *tfm) | |
118 | { | |
88056ec3 | 119 | crypto_destroy_tfm(tfm, crypto_ahash_tfm(tfm)); |
18e33e6d HX |
120 | } |
121 | ||
122 | static inline unsigned int crypto_ahash_alignmask( | |
123 | struct crypto_ahash *tfm) | |
124 | { | |
125 | return crypto_tfm_alg_alignmask(crypto_ahash_tfm(tfm)); | |
126 | } | |
127 | ||
88056ec3 HX |
128 | static inline struct hash_alg_common *__crypto_hash_alg_common( |
129 | struct crypto_alg *alg) | |
130 | { | |
131 | return container_of(alg, struct hash_alg_common, base); | |
132 | } | |
133 | ||
134 | static inline struct hash_alg_common *crypto_hash_alg_common( | |
135 | struct crypto_ahash *tfm) | |
18e33e6d | 136 | { |
88056ec3 | 137 | return __crypto_hash_alg_common(crypto_ahash_tfm(tfm)->__crt_alg); |
18e33e6d HX |
138 | } |
139 | ||
140 | static inline unsigned int crypto_ahash_digestsize(struct crypto_ahash *tfm) | |
141 | { | |
500b3e3c | 142 | return crypto_hash_alg_common(tfm)->digestsize; |
88056ec3 HX |
143 | } |
144 | ||
145 | static inline unsigned int crypto_ahash_statesize(struct crypto_ahash *tfm) | |
146 | { | |
147 | return crypto_hash_alg_common(tfm)->statesize; | |
18e33e6d HX |
148 | } |
149 | ||
150 | static inline u32 crypto_ahash_get_flags(struct crypto_ahash *tfm) | |
151 | { | |
152 | return crypto_tfm_get_flags(crypto_ahash_tfm(tfm)); | |
153 | } | |
154 | ||
155 | static inline void crypto_ahash_set_flags(struct crypto_ahash *tfm, u32 flags) | |
156 | { | |
157 | crypto_tfm_set_flags(crypto_ahash_tfm(tfm), flags); | |
158 | } | |
159 | ||
160 | static inline void crypto_ahash_clear_flags(struct crypto_ahash *tfm, u32 flags) | |
161 | { | |
162 | crypto_tfm_clear_flags(crypto_ahash_tfm(tfm), flags); | |
163 | } | |
164 | ||
165 | static inline struct crypto_ahash *crypto_ahash_reqtfm( | |
166 | struct ahash_request *req) | |
167 | { | |
168 | return __crypto_ahash_cast(req->base.tfm); | |
169 | } | |
170 | ||
171 | static inline unsigned int crypto_ahash_reqsize(struct crypto_ahash *tfm) | |
172 | { | |
88056ec3 | 173 | return tfm->reqsize; |
18e33e6d HX |
174 | } |
175 | ||
dec8b786 HX |
176 | static inline void *ahash_request_ctx(struct ahash_request *req) |
177 | { | |
178 | return req->__ctx; | |
179 | } | |
180 | ||
66f6ce5e HX |
181 | int crypto_ahash_setkey(struct crypto_ahash *tfm, const u8 *key, |
182 | unsigned int keylen); | |
183 | int crypto_ahash_finup(struct ahash_request *req); | |
184 | int crypto_ahash_final(struct ahash_request *req); | |
185 | int crypto_ahash_digest(struct ahash_request *req); | |
18e33e6d | 186 | |
88056ec3 | 187 | static inline int crypto_ahash_export(struct ahash_request *req, void *out) |
dec8b786 | 188 | { |
88056ec3 | 189 | return crypto_ahash_reqtfm(req)->export(req, out); |
dec8b786 HX |
190 | } |
191 | ||
88056ec3 HX |
192 | static inline int crypto_ahash_import(struct ahash_request *req, const void *in) |
193 | { | |
194 | return crypto_ahash_reqtfm(req)->import(req, in); | |
195 | } | |
dec8b786 | 196 | |
318e5313 HX |
197 | static inline int crypto_ahash_init(struct ahash_request *req) |
198 | { | |
88056ec3 | 199 | return crypto_ahash_reqtfm(req)->init(req); |
318e5313 HX |
200 | } |
201 | ||
202 | static inline int crypto_ahash_update(struct ahash_request *req) | |
203 | { | |
88056ec3 | 204 | return crypto_ahash_reqtfm(req)->update(req); |
318e5313 HX |
205 | } |
206 | ||
18e33e6d HX |
207 | static inline void ahash_request_set_tfm(struct ahash_request *req, |
208 | struct crypto_ahash *tfm) | |
209 | { | |
210 | req->base.tfm = crypto_ahash_tfm(tfm); | |
211 | } | |
212 | ||
213 | static inline struct ahash_request *ahash_request_alloc( | |
214 | struct crypto_ahash *tfm, gfp_t gfp) | |
215 | { | |
216 | struct ahash_request *req; | |
217 | ||
218 | req = kmalloc(sizeof(struct ahash_request) + | |
219 | crypto_ahash_reqsize(tfm), gfp); | |
220 | ||
221 | if (likely(req)) | |
222 | ahash_request_set_tfm(req, tfm); | |
223 | ||
224 | return req; | |
225 | } | |
226 | ||
227 | static inline void ahash_request_free(struct ahash_request *req) | |
228 | { | |
aef73cfc | 229 | kzfree(req); |
18e33e6d HX |
230 | } |
231 | ||
232 | static inline struct ahash_request *ahash_request_cast( | |
233 | struct crypto_async_request *req) | |
234 | { | |
235 | return container_of(req, struct ahash_request, base); | |
236 | } | |
237 | ||
238 | static inline void ahash_request_set_callback(struct ahash_request *req, | |
239 | u32 flags, | |
240 | crypto_completion_t complete, | |
241 | void *data) | |
242 | { | |
243 | req->base.complete = complete; | |
244 | req->base.data = data; | |
245 | req->base.flags = flags; | |
246 | } | |
247 | ||
248 | static inline void ahash_request_set_crypt(struct ahash_request *req, | |
249 | struct scatterlist *src, u8 *result, | |
250 | unsigned int nbytes) | |
251 | { | |
252 | req->src = src; | |
253 | req->nbytes = nbytes; | |
254 | req->result = result; | |
255 | } | |
256 | ||
7b5a080b HX |
257 | struct crypto_shash *crypto_alloc_shash(const char *alg_name, u32 type, |
258 | u32 mask); | |
259 | ||
260 | static inline struct crypto_tfm *crypto_shash_tfm(struct crypto_shash *tfm) | |
261 | { | |
262 | return &tfm->base; | |
263 | } | |
264 | ||
265 | static inline void crypto_free_shash(struct crypto_shash *tfm) | |
266 | { | |
412e87ae | 267 | crypto_destroy_tfm(tfm, crypto_shash_tfm(tfm)); |
7b5a080b HX |
268 | } |
269 | ||
270 | static inline unsigned int crypto_shash_alignmask( | |
271 | struct crypto_shash *tfm) | |
272 | { | |
273 | return crypto_tfm_alg_alignmask(crypto_shash_tfm(tfm)); | |
274 | } | |
275 | ||
97495986 HX |
276 | static inline unsigned int crypto_shash_blocksize(struct crypto_shash *tfm) |
277 | { | |
278 | return crypto_tfm_alg_blocksize(crypto_shash_tfm(tfm)); | |
279 | } | |
280 | ||
7b5a080b HX |
281 | static inline struct shash_alg *__crypto_shash_alg(struct crypto_alg *alg) |
282 | { | |
283 | return container_of(alg, struct shash_alg, base); | |
284 | } | |
285 | ||
286 | static inline struct shash_alg *crypto_shash_alg(struct crypto_shash *tfm) | |
287 | { | |
288 | return __crypto_shash_alg(crypto_shash_tfm(tfm)->__crt_alg); | |
289 | } | |
290 | ||
291 | static inline unsigned int crypto_shash_digestsize(struct crypto_shash *tfm) | |
292 | { | |
293 | return crypto_shash_alg(tfm)->digestsize; | |
294 | } | |
295 | ||
99d27e1c HX |
296 | static inline unsigned int crypto_shash_statesize(struct crypto_shash *tfm) |
297 | { | |
298 | return crypto_shash_alg(tfm)->statesize; | |
299 | } | |
300 | ||
7b5a080b HX |
301 | static inline u32 crypto_shash_get_flags(struct crypto_shash *tfm) |
302 | { | |
303 | return crypto_tfm_get_flags(crypto_shash_tfm(tfm)); | |
304 | } | |
305 | ||
306 | static inline void crypto_shash_set_flags(struct crypto_shash *tfm, u32 flags) | |
307 | { | |
308 | crypto_tfm_set_flags(crypto_shash_tfm(tfm), flags); | |
309 | } | |
310 | ||
311 | static inline void crypto_shash_clear_flags(struct crypto_shash *tfm, u32 flags) | |
312 | { | |
313 | crypto_tfm_clear_flags(crypto_shash_tfm(tfm), flags); | |
314 | } | |
315 | ||
316 | static inline unsigned int crypto_shash_descsize(struct crypto_shash *tfm) | |
317 | { | |
113adefc | 318 | return tfm->descsize; |
7b5a080b HX |
319 | } |
320 | ||
321 | static inline void *shash_desc_ctx(struct shash_desc *desc) | |
322 | { | |
323 | return desc->__ctx; | |
324 | } | |
325 | ||
326 | int crypto_shash_setkey(struct crypto_shash *tfm, const u8 *key, | |
327 | unsigned int keylen); | |
328 | int crypto_shash_digest(struct shash_desc *desc, const u8 *data, | |
329 | unsigned int len, u8 *out); | |
330 | ||
99d27e1c | 331 | static inline int crypto_shash_export(struct shash_desc *desc, void *out) |
dec8b786 | 332 | { |
99d27e1c | 333 | return crypto_shash_alg(desc->tfm)->export(desc, out); |
dec8b786 HX |
334 | } |
335 | ||
99d27e1c HX |
336 | static inline int crypto_shash_import(struct shash_desc *desc, const void *in) |
337 | { | |
338 | return crypto_shash_alg(desc->tfm)->import(desc, in); | |
339 | } | |
dec8b786 | 340 | |
7b5a080b HX |
341 | static inline int crypto_shash_init(struct shash_desc *desc) |
342 | { | |
343 | return crypto_shash_alg(desc->tfm)->init(desc); | |
344 | } | |
345 | ||
346 | int crypto_shash_update(struct shash_desc *desc, const u8 *data, | |
347 | unsigned int len); | |
348 | int crypto_shash_final(struct shash_desc *desc, u8 *out); | |
349 | int crypto_shash_finup(struct shash_desc *desc, const u8 *data, | |
350 | unsigned int len, u8 *out); | |
351 | ||
18e33e6d | 352 | #endif /* _CRYPTO_HASH_H */ |