Commit | Line | Data |
---|---|---|
7b5a080b HX |
1 | /* |
2 | * Synchronous Cryptographic Hash operations. | |
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 | ||
3b2f6df0 | 13 | #include <crypto/scatterwalk.h> |
7b5a080b HX |
14 | #include <crypto/internal/hash.h> |
15 | #include <linux/err.h> | |
16 | #include <linux/kernel.h> | |
17 | #include <linux/module.h> | |
18 | #include <linux/slab.h> | |
19 | #include <linux/seq_file.h> | |
f4d663ce SK |
20 | #include <linux/cryptouser.h> |
21 | #include <net/netlink.h> | |
7b5a080b | 22 | |
3b2f6df0 HX |
23 | #include "internal.h" |
24 | ||
3f683d61 HX |
25 | static const struct crypto_type crypto_shash_type; |
26 | ||
57cfe44b HX |
27 | static int shash_no_setkey(struct crypto_shash *tfm, const u8 *key, |
28 | unsigned int keylen) | |
29 | { | |
30 | return -ENOSYS; | |
31 | } | |
32 | ||
7b5a080b HX |
33 | static int shash_setkey_unaligned(struct crypto_shash *tfm, const u8 *key, |
34 | unsigned int keylen) | |
35 | { | |
36 | struct shash_alg *shash = crypto_shash_alg(tfm); | |
37 | unsigned long alignmask = crypto_shash_alignmask(tfm); | |
38 | unsigned long absize; | |
39 | u8 *buffer, *alignbuffer; | |
40 | int err; | |
41 | ||
18eb8ea6 | 42 | absize = keylen + (alignmask & ~(crypto_tfm_ctx_alignment() - 1)); |
7b5a080b HX |
43 | buffer = kmalloc(absize, GFP_KERNEL); |
44 | if (!buffer) | |
45 | return -ENOMEM; | |
46 | ||
47 | alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1); | |
48 | memcpy(alignbuffer, key, keylen); | |
49 | err = shash->setkey(tfm, alignbuffer, keylen); | |
8c32c516 | 50 | kzfree(buffer); |
7b5a080b HX |
51 | return err; |
52 | } | |
53 | ||
54 | int crypto_shash_setkey(struct crypto_shash *tfm, const u8 *key, | |
55 | unsigned int keylen) | |
56 | { | |
57 | struct shash_alg *shash = crypto_shash_alg(tfm); | |
58 | unsigned long alignmask = crypto_shash_alignmask(tfm); | |
59 | ||
60 | if ((unsigned long)key & alignmask) | |
61 | return shash_setkey_unaligned(tfm, key, keylen); | |
62 | ||
63 | return shash->setkey(tfm, key, keylen); | |
64 | } | |
65 | EXPORT_SYMBOL_GPL(crypto_shash_setkey); | |
66 | ||
67 | static inline unsigned int shash_align_buffer_size(unsigned len, | |
68 | unsigned long mask) | |
69 | { | |
66d8ea57 MC |
70 | typedef u8 __attribute__ ((aligned)) u8_aligned; |
71 | return len + (mask & ~(__alignof__(u8_aligned) - 1)); | |
7b5a080b HX |
72 | } |
73 | ||
74 | static int shash_update_unaligned(struct shash_desc *desc, const u8 *data, | |
75 | unsigned int len) | |
76 | { | |
77 | struct crypto_shash *tfm = desc->tfm; | |
78 | struct shash_alg *shash = crypto_shash_alg(tfm); | |
79 | unsigned long alignmask = crypto_shash_alignmask(tfm); | |
80 | unsigned int unaligned_len = alignmask + 1 - | |
81 | ((unsigned long)data & alignmask); | |
0e2d3a12 | 82 | u8 ubuf[shash_align_buffer_size(unaligned_len, alignmask)] |
7b5a080b | 83 | __attribute__ ((aligned)); |
0e2d3a12 | 84 | u8 *buf = PTR_ALIGN(&ubuf[0], alignmask + 1); |
8c32c516 | 85 | int err; |
7b5a080b | 86 | |
f4f68993 YS |
87 | if (unaligned_len > len) |
88 | unaligned_len = len; | |
89 | ||
7b5a080b | 90 | memcpy(buf, data, unaligned_len); |
8c32c516 HX |
91 | err = shash->update(desc, buf, unaligned_len); |
92 | memset(buf, 0, unaligned_len); | |
7b5a080b | 93 | |
8c32c516 | 94 | return err ?: |
7b5a080b HX |
95 | shash->update(desc, data + unaligned_len, len - unaligned_len); |
96 | } | |
97 | ||
98 | int crypto_shash_update(struct shash_desc *desc, const u8 *data, | |
99 | unsigned int len) | |
100 | { | |
101 | struct crypto_shash *tfm = desc->tfm; | |
102 | struct shash_alg *shash = crypto_shash_alg(tfm); | |
103 | unsigned long alignmask = crypto_shash_alignmask(tfm); | |
104 | ||
105 | if ((unsigned long)data & alignmask) | |
106 | return shash_update_unaligned(desc, data, len); | |
107 | ||
108 | return shash->update(desc, data, len); | |
109 | } | |
110 | EXPORT_SYMBOL_GPL(crypto_shash_update); | |
111 | ||
112 | static int shash_final_unaligned(struct shash_desc *desc, u8 *out) | |
113 | { | |
114 | struct crypto_shash *tfm = desc->tfm; | |
115 | unsigned long alignmask = crypto_shash_alignmask(tfm); | |
116 | struct shash_alg *shash = crypto_shash_alg(tfm); | |
117 | unsigned int ds = crypto_shash_digestsize(tfm); | |
0e2d3a12 | 118 | u8 ubuf[shash_align_buffer_size(ds, alignmask)] |
7b5a080b | 119 | __attribute__ ((aligned)); |
0e2d3a12 | 120 | u8 *buf = PTR_ALIGN(&ubuf[0], alignmask + 1); |
7b5a080b HX |
121 | int err; |
122 | ||
123 | err = shash->final(desc, buf); | |
8c32c516 HX |
124 | if (err) |
125 | goto out; | |
126 | ||
7b5a080b | 127 | memcpy(out, buf, ds); |
8c32c516 HX |
128 | |
129 | out: | |
130 | memset(buf, 0, ds); | |
7b5a080b HX |
131 | return err; |
132 | } | |
133 | ||
134 | int crypto_shash_final(struct shash_desc *desc, u8 *out) | |
135 | { | |
136 | struct crypto_shash *tfm = desc->tfm; | |
137 | struct shash_alg *shash = crypto_shash_alg(tfm); | |
138 | unsigned long alignmask = crypto_shash_alignmask(tfm); | |
139 | ||
140 | if ((unsigned long)out & alignmask) | |
141 | return shash_final_unaligned(desc, out); | |
142 | ||
143 | return shash->final(desc, out); | |
144 | } | |
145 | EXPORT_SYMBOL_GPL(crypto_shash_final); | |
146 | ||
147 | static int shash_finup_unaligned(struct shash_desc *desc, const u8 *data, | |
148 | unsigned int len, u8 *out) | |
149 | { | |
150 | return crypto_shash_update(desc, data, len) ?: | |
151 | crypto_shash_final(desc, out); | |
152 | } | |
153 | ||
154 | int crypto_shash_finup(struct shash_desc *desc, const u8 *data, | |
155 | unsigned int len, u8 *out) | |
156 | { | |
157 | struct crypto_shash *tfm = desc->tfm; | |
158 | struct shash_alg *shash = crypto_shash_alg(tfm); | |
159 | unsigned long alignmask = crypto_shash_alignmask(tfm); | |
160 | ||
8267adab | 161 | if (((unsigned long)data | (unsigned long)out) & alignmask) |
7b5a080b HX |
162 | return shash_finup_unaligned(desc, data, len, out); |
163 | ||
164 | return shash->finup(desc, data, len, out); | |
165 | } | |
166 | EXPORT_SYMBOL_GPL(crypto_shash_finup); | |
167 | ||
168 | static int shash_digest_unaligned(struct shash_desc *desc, const u8 *data, | |
169 | unsigned int len, u8 *out) | |
170 | { | |
171 | return crypto_shash_init(desc) ?: | |
f88ad8de | 172 | crypto_shash_finup(desc, data, len, out); |
7b5a080b HX |
173 | } |
174 | ||
175 | int crypto_shash_digest(struct shash_desc *desc, const u8 *data, | |
176 | unsigned int len, u8 *out) | |
177 | { | |
178 | struct crypto_shash *tfm = desc->tfm; | |
179 | struct shash_alg *shash = crypto_shash_alg(tfm); | |
180 | unsigned long alignmask = crypto_shash_alignmask(tfm); | |
181 | ||
8267adab | 182 | if (((unsigned long)data | (unsigned long)out) & alignmask) |
7b5a080b HX |
183 | return shash_digest_unaligned(desc, data, len, out); |
184 | ||
185 | return shash->digest(desc, data, len, out); | |
186 | } | |
187 | EXPORT_SYMBOL_GPL(crypto_shash_digest); | |
188 | ||
f592682f | 189 | static int shash_default_export(struct shash_desc *desc, void *out) |
dec8b786 | 190 | { |
f592682f HX |
191 | memcpy(out, shash_desc_ctx(desc), crypto_shash_descsize(desc->tfm)); |
192 | return 0; | |
99d27e1c | 193 | } |
dec8b786 | 194 | |
f592682f | 195 | static int shash_default_import(struct shash_desc *desc, const void *in) |
99d27e1c | 196 | { |
f592682f HX |
197 | memcpy(shash_desc_ctx(desc), in, crypto_shash_descsize(desc->tfm)); |
198 | return 0; | |
dec8b786 | 199 | } |
dec8b786 | 200 | |
3b2f6df0 HX |
201 | static int shash_async_setkey(struct crypto_ahash *tfm, const u8 *key, |
202 | unsigned int keylen) | |
203 | { | |
204 | struct crypto_shash **ctx = crypto_ahash_ctx(tfm); | |
205 | ||
206 | return crypto_shash_setkey(*ctx, key, keylen); | |
207 | } | |
208 | ||
209 | static int shash_async_init(struct ahash_request *req) | |
210 | { | |
211 | struct crypto_shash **ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req)); | |
212 | struct shash_desc *desc = ahash_request_ctx(req); | |
213 | ||
214 | desc->tfm = *ctx; | |
215 | desc->flags = req->base.flags; | |
216 | ||
217 | return crypto_shash_init(desc); | |
218 | } | |
219 | ||
7eddf95e | 220 | int shash_ahash_update(struct ahash_request *req, struct shash_desc *desc) |
3b2f6df0 | 221 | { |
3b2f6df0 HX |
222 | struct crypto_hash_walk walk; |
223 | int nbytes; | |
224 | ||
225 | for (nbytes = crypto_hash_walk_first(req, &walk); nbytes > 0; | |
226 | nbytes = crypto_hash_walk_done(&walk, nbytes)) | |
227 | nbytes = crypto_shash_update(desc, walk.data, nbytes); | |
228 | ||
229 | return nbytes; | |
230 | } | |
7eddf95e HX |
231 | EXPORT_SYMBOL_GPL(shash_ahash_update); |
232 | ||
233 | static int shash_async_update(struct ahash_request *req) | |
234 | { | |
235 | return shash_ahash_update(req, ahash_request_ctx(req)); | |
236 | } | |
3b2f6df0 HX |
237 | |
238 | static int shash_async_final(struct ahash_request *req) | |
239 | { | |
240 | return crypto_shash_final(ahash_request_ctx(req), req->result); | |
241 | } | |
242 | ||
66f6ce5e HX |
243 | int shash_ahash_finup(struct ahash_request *req, struct shash_desc *desc) |
244 | { | |
245 | struct crypto_hash_walk walk; | |
246 | int nbytes; | |
247 | ||
cbc86b91 HX |
248 | nbytes = crypto_hash_walk_first(req, &walk); |
249 | if (!nbytes) | |
250 | return crypto_shash_final(desc, req->result); | |
251 | ||
252 | do { | |
66f6ce5e HX |
253 | nbytes = crypto_hash_walk_last(&walk) ? |
254 | crypto_shash_finup(desc, walk.data, nbytes, | |
255 | req->result) : | |
256 | crypto_shash_update(desc, walk.data, nbytes); | |
cbc86b91 HX |
257 | nbytes = crypto_hash_walk_done(&walk, nbytes); |
258 | } while (nbytes > 0); | |
66f6ce5e HX |
259 | |
260 | return nbytes; | |
261 | } | |
262 | EXPORT_SYMBOL_GPL(shash_ahash_finup); | |
263 | ||
264 | static int shash_async_finup(struct ahash_request *req) | |
265 | { | |
266 | struct crypto_shash **ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req)); | |
267 | struct shash_desc *desc = ahash_request_ctx(req); | |
268 | ||
269 | desc->tfm = *ctx; | |
270 | desc->flags = req->base.flags; | |
271 | ||
272 | return shash_ahash_finup(req, desc); | |
273 | } | |
274 | ||
7eddf95e | 275 | int shash_ahash_digest(struct ahash_request *req, struct shash_desc *desc) |
3b2f6df0 HX |
276 | { |
277 | struct scatterlist *sg = req->src; | |
278 | unsigned int offset = sg->offset; | |
279 | unsigned int nbytes = req->nbytes; | |
280 | int err; | |
281 | ||
282 | if (nbytes < min(sg->length, ((unsigned int)(PAGE_SIZE)) - offset)) { | |
3b2f6df0 HX |
283 | void *data; |
284 | ||
f0dfc0b0 | 285 | data = kmap_atomic(sg_page(sg)); |
3b2f6df0 HX |
286 | err = crypto_shash_digest(desc, data + offset, nbytes, |
287 | req->result); | |
f0dfc0b0 | 288 | kunmap_atomic(data); |
3b2f6df0 | 289 | crypto_yield(desc->flags); |
7eddf95e HX |
290 | } else |
291 | err = crypto_shash_init(desc) ?: | |
66f6ce5e | 292 | shash_ahash_finup(req, desc); |
3b2f6df0 | 293 | |
7eddf95e HX |
294 | return err; |
295 | } | |
296 | EXPORT_SYMBOL_GPL(shash_ahash_digest); | |
3b2f6df0 | 297 | |
7eddf95e HX |
298 | static int shash_async_digest(struct ahash_request *req) |
299 | { | |
300 | struct crypto_shash **ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req)); | |
301 | struct shash_desc *desc = ahash_request_ctx(req); | |
3b2f6df0 | 302 | |
7eddf95e HX |
303 | desc->tfm = *ctx; |
304 | desc->flags = req->base.flags; | |
3b2f6df0 | 305 | |
7eddf95e | 306 | return shash_ahash_digest(req, desc); |
3b2f6df0 HX |
307 | } |
308 | ||
66f6ce5e HX |
309 | static int shash_async_export(struct ahash_request *req, void *out) |
310 | { | |
311 | return crypto_shash_export(ahash_request_ctx(req), out); | |
312 | } | |
313 | ||
314 | static int shash_async_import(struct ahash_request *req, const void *in) | |
315 | { | |
90246e79 HX |
316 | struct crypto_shash **ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(req)); |
317 | struct shash_desc *desc = ahash_request_ctx(req); | |
318 | ||
319 | desc->tfm = *ctx; | |
320 | desc->flags = req->base.flags; | |
321 | ||
322 | return crypto_shash_import(desc, in); | |
66f6ce5e HX |
323 | } |
324 | ||
3b2f6df0 HX |
325 | static void crypto_exit_shash_ops_async(struct crypto_tfm *tfm) |
326 | { | |
327 | struct crypto_shash **ctx = crypto_tfm_ctx(tfm); | |
328 | ||
329 | crypto_free_shash(*ctx); | |
330 | } | |
331 | ||
88056ec3 | 332 | int crypto_init_shash_ops_async(struct crypto_tfm *tfm) |
3b2f6df0 HX |
333 | { |
334 | struct crypto_alg *calg = tfm->__crt_alg; | |
66f6ce5e | 335 | struct shash_alg *alg = __crypto_shash_alg(calg); |
88056ec3 | 336 | struct crypto_ahash *crt = __crypto_ahash_cast(tfm); |
3b2f6df0 HX |
337 | struct crypto_shash **ctx = crypto_tfm_ctx(tfm); |
338 | struct crypto_shash *shash; | |
339 | ||
340 | if (!crypto_mod_get(calg)) | |
341 | return -EAGAIN; | |
342 | ||
3f683d61 | 343 | shash = crypto_create_tfm(calg, &crypto_shash_type); |
3b2f6df0 HX |
344 | if (IS_ERR(shash)) { |
345 | crypto_mod_put(calg); | |
346 | return PTR_ERR(shash); | |
347 | } | |
348 | ||
349 | *ctx = shash; | |
350 | tfm->exit = crypto_exit_shash_ops_async; | |
351 | ||
352 | crt->init = shash_async_init; | |
353 | crt->update = shash_async_update; | |
66f6ce5e HX |
354 | crt->final = shash_async_final; |
355 | crt->finup = shash_async_finup; | |
3b2f6df0 | 356 | crt->digest = shash_async_digest; |
00420a65 HX |
357 | crt->setkey = shash_async_setkey; |
358 | ||
359 | crt->has_setkey = alg->setkey != shash_no_setkey; | |
66f6ce5e | 360 | |
66f6ce5e HX |
361 | if (alg->export) |
362 | crt->export = shash_async_export; | |
0044f3ed | 363 | if (alg->import) |
66f6ce5e | 364 | crt->import = shash_async_import; |
3b2f6df0 | 365 | |
3b2f6df0 HX |
366 | crt->reqsize = sizeof(struct shash_desc) + crypto_shash_descsize(shash); |
367 | ||
368 | return 0; | |
369 | } | |
370 | ||
2ca33da1 | 371 | static int crypto_shash_init_tfm(struct crypto_tfm *tfm) |
7b5a080b | 372 | { |
113adefc HX |
373 | struct crypto_shash *hash = __crypto_shash_cast(tfm); |
374 | ||
375 | hash->descsize = crypto_shash_alg(hash)->descsize; | |
7b5a080b HX |
376 | return 0; |
377 | } | |
378 | ||
3acc8473 | 379 | #ifdef CONFIG_NET |
f4d663ce SK |
380 | static int crypto_shash_report(struct sk_buff *skb, struct crypto_alg *alg) |
381 | { | |
382 | struct crypto_report_hash rhash; | |
383 | struct shash_alg *salg = __crypto_shash_alg(alg); | |
384 | ||
9a5467bf MK |
385 | strncpy(rhash.type, "shash", sizeof(rhash.type)); |
386 | ||
f4d663ce SK |
387 | rhash.blocksize = alg->cra_blocksize; |
388 | rhash.digestsize = salg->digestsize; | |
389 | ||
6662df33 DM |
390 | if (nla_put(skb, CRYPTOCFGA_REPORT_HASH, |
391 | sizeof(struct crypto_report_hash), &rhash)) | |
392 | goto nla_put_failure; | |
f4d663ce SK |
393 | return 0; |
394 | ||
395 | nla_put_failure: | |
396 | return -EMSGSIZE; | |
397 | } | |
3acc8473 HX |
398 | #else |
399 | static int crypto_shash_report(struct sk_buff *skb, struct crypto_alg *alg) | |
400 | { | |
401 | return -ENOSYS; | |
402 | } | |
403 | #endif | |
f4d663ce | 404 | |
7b5a080b HX |
405 | static void crypto_shash_show(struct seq_file *m, struct crypto_alg *alg) |
406 | __attribute__ ((unused)); | |
407 | static void crypto_shash_show(struct seq_file *m, struct crypto_alg *alg) | |
408 | { | |
409 | struct shash_alg *salg = __crypto_shash_alg(alg); | |
410 | ||
411 | seq_printf(m, "type : shash\n"); | |
412 | seq_printf(m, "blocksize : %u\n", alg->cra_blocksize); | |
413 | seq_printf(m, "digestsize : %u\n", salg->digestsize); | |
7b5a080b HX |
414 | } |
415 | ||
416 | static const struct crypto_type crypto_shash_type = { | |
ac611680 | 417 | .extsize = crypto_alg_extsize, |
7b5a080b HX |
418 | .init_tfm = crypto_shash_init_tfm, |
419 | #ifdef CONFIG_PROC_FS | |
420 | .show = crypto_shash_show, | |
421 | #endif | |
f4d663ce | 422 | .report = crypto_shash_report, |
7b5a080b HX |
423 | .maskclear = ~CRYPTO_ALG_TYPE_MASK, |
424 | .maskset = CRYPTO_ALG_TYPE_MASK, | |
425 | .type = CRYPTO_ALG_TYPE_SHASH, | |
426 | .tfmsize = offsetof(struct crypto_shash, base), | |
427 | }; | |
428 | ||
429 | struct crypto_shash *crypto_alloc_shash(const char *alg_name, u32 type, | |
430 | u32 mask) | |
431 | { | |
3f683d61 | 432 | return crypto_alloc_tfm(alg_name, &crypto_shash_type, type, mask); |
7b5a080b HX |
433 | } |
434 | EXPORT_SYMBOL_GPL(crypto_alloc_shash); | |
435 | ||
619a6ebd | 436 | static int shash_prepare_alg(struct shash_alg *alg) |
7b5a080b HX |
437 | { |
438 | struct crypto_alg *base = &alg->base; | |
439 | ||
440 | if (alg->digestsize > PAGE_SIZE / 8 || | |
99d27e1c HX |
441 | alg->descsize > PAGE_SIZE / 8 || |
442 | alg->statesize > PAGE_SIZE / 8) | |
7b5a080b HX |
443 | return -EINVAL; |
444 | ||
445 | base->cra_type = &crypto_shash_type; | |
446 | base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK; | |
447 | base->cra_flags |= CRYPTO_ALG_TYPE_SHASH; | |
99d27e1c | 448 | |
8267adab HX |
449 | if (!alg->finup) |
450 | alg->finup = shash_finup_unaligned; | |
451 | if (!alg->digest) | |
452 | alg->digest = shash_digest_unaligned; | |
f592682f HX |
453 | if (!alg->export) { |
454 | alg->export = shash_default_export; | |
455 | alg->import = shash_default_import; | |
456 | alg->statesize = alg->descsize; | |
457 | } | |
57cfe44b HX |
458 | if (!alg->setkey) |
459 | alg->setkey = shash_no_setkey; | |
99d27e1c | 460 | |
619a6ebd HX |
461 | return 0; |
462 | } | |
463 | ||
464 | int crypto_register_shash(struct shash_alg *alg) | |
465 | { | |
466 | struct crypto_alg *base = &alg->base; | |
467 | int err; | |
468 | ||
469 | err = shash_prepare_alg(alg); | |
470 | if (err) | |
471 | return err; | |
7b5a080b HX |
472 | |
473 | return crypto_register_alg(base); | |
474 | } | |
475 | EXPORT_SYMBOL_GPL(crypto_register_shash); | |
476 | ||
477 | int crypto_unregister_shash(struct shash_alg *alg) | |
478 | { | |
479 | return crypto_unregister_alg(&alg->base); | |
480 | } | |
481 | EXPORT_SYMBOL_GPL(crypto_unregister_shash); | |
482 | ||
50fc3e8d JK |
483 | int crypto_register_shashes(struct shash_alg *algs, int count) |
484 | { | |
485 | int i, ret; | |
486 | ||
487 | for (i = 0; i < count; i++) { | |
488 | ret = crypto_register_shash(&algs[i]); | |
489 | if (ret) | |
490 | goto err; | |
491 | } | |
492 | ||
493 | return 0; | |
494 | ||
495 | err: | |
496 | for (--i; i >= 0; --i) | |
497 | crypto_unregister_shash(&algs[i]); | |
498 | ||
499 | return ret; | |
500 | } | |
501 | EXPORT_SYMBOL_GPL(crypto_register_shashes); | |
502 | ||
503 | int crypto_unregister_shashes(struct shash_alg *algs, int count) | |
504 | { | |
505 | int i, ret; | |
506 | ||
507 | for (i = count - 1; i >= 0; --i) { | |
508 | ret = crypto_unregister_shash(&algs[i]); | |
509 | if (ret) | |
510 | pr_err("Failed to unregister %s %s: %d\n", | |
511 | algs[i].base.cra_driver_name, | |
512 | algs[i].base.cra_name, ret); | |
513 | } | |
514 | ||
515 | return 0; | |
516 | } | |
517 | EXPORT_SYMBOL_GPL(crypto_unregister_shashes); | |
518 | ||
619a6ebd HX |
519 | int shash_register_instance(struct crypto_template *tmpl, |
520 | struct shash_instance *inst) | |
521 | { | |
522 | int err; | |
523 | ||
524 | err = shash_prepare_alg(&inst->alg); | |
525 | if (err) | |
526 | return err; | |
527 | ||
528 | return crypto_register_instance(tmpl, shash_crypto_instance(inst)); | |
529 | } | |
530 | EXPORT_SYMBOL_GPL(shash_register_instance); | |
531 | ||
2e4fddd8 HX |
532 | void shash_free_instance(struct crypto_instance *inst) |
533 | { | |
534 | crypto_drop_spawn(crypto_instance_ctx(inst)); | |
535 | kfree(shash_instance(inst)); | |
536 | } | |
537 | EXPORT_SYMBOL_GPL(shash_free_instance); | |
538 | ||
94296999 HX |
539 | int crypto_init_shash_spawn(struct crypto_shash_spawn *spawn, |
540 | struct shash_alg *alg, | |
541 | struct crypto_instance *inst) | |
542 | { | |
543 | return crypto_init_spawn2(&spawn->base, &alg->base, inst, | |
544 | &crypto_shash_type); | |
545 | } | |
546 | EXPORT_SYMBOL_GPL(crypto_init_shash_spawn); | |
547 | ||
7d6f5640 HX |
548 | struct shash_alg *shash_attr_alg(struct rtattr *rta, u32 type, u32 mask) |
549 | { | |
550 | struct crypto_alg *alg; | |
551 | ||
552 | alg = crypto_attr_alg2(rta, &crypto_shash_type, type, mask); | |
553 | return IS_ERR(alg) ? ERR_CAST(alg) : | |
554 | container_of(alg, struct shash_alg, base); | |
555 | } | |
556 | EXPORT_SYMBOL_GPL(shash_attr_alg); | |
557 | ||
7b5a080b HX |
558 | MODULE_LICENSE("GPL"); |
559 | MODULE_DESCRIPTION("Synchronous cryptographic hash type"); |