Commit | Line | Data |
---|---|---|
1ae97820 HX |
1 | /* |
2 | * AEAD: Authenticated Encryption with Associated Data | |
3922538f | 3 | * |
1ae97820 HX |
4 | * This file provides API support for AEAD algorithms. |
5 | * | |
6 | * Copyright (c) 2007 Herbert Xu <herbert@gondor.apana.org.au> | |
7 | * | |
8 | * This program is free software; you can redistribute it and/or modify it | |
9 | * under the terms of the GNU General Public License as published by the Free | |
3922538f | 10 | * Software Foundation; either version 2 of the License, or (at your option) |
1ae97820 HX |
11 | * any later version. |
12 | * | |
13 | */ | |
14 | ||
6350449f | 15 | #include <crypto/internal/geniv.h> |
149a3971 HX |
16 | #include <crypto/internal/rng.h> |
17 | #include <crypto/null.h> | |
996d98d8 | 18 | #include <crypto/scatterwalk.h> |
5b6d2d7f | 19 | #include <linux/err.h> |
1ae97820 HX |
20 | #include <linux/init.h> |
21 | #include <linux/kernel.h> | |
22 | #include <linux/module.h> | |
d29ce988 | 23 | #include <linux/rtnetlink.h> |
d43c36dc | 24 | #include <linux/sched.h> |
1ae97820 HX |
25 | #include <linux/slab.h> |
26 | #include <linux/seq_file.h> | |
6ad414fe SK |
27 | #include <linux/cryptouser.h> |
28 | #include <net/netlink.h> | |
1ae97820 | 29 | |
5b6d2d7f HX |
30 | #include "internal.h" |
31 | ||
6350449f HX |
32 | struct compat_request_ctx { |
33 | struct scatterlist src[2]; | |
34 | struct scatterlist dst[2]; | |
35 | struct scatterlist ivbuf[2]; | |
36 | struct scatterlist *ivsg; | |
37 | struct aead_givcrypt_request subreq; | |
38 | }; | |
39 | ||
5d1d65f8 HX |
40 | static int aead_null_givencrypt(struct aead_givcrypt_request *req); |
41 | static int aead_null_givdecrypt(struct aead_givcrypt_request *req); | |
42 | ||
1ae97820 HX |
43 | static int setkey_unaligned(struct crypto_aead *tfm, const u8 *key, |
44 | unsigned int keylen) | |
45 | { | |
1ae97820 HX |
46 | unsigned long alignmask = crypto_aead_alignmask(tfm); |
47 | int ret; | |
48 | u8 *buffer, *alignbuffer; | |
49 | unsigned long absize; | |
50 | ||
51 | absize = keylen + alignmask; | |
52 | buffer = kmalloc(absize, GFP_ATOMIC); | |
53 | if (!buffer) | |
54 | return -ENOMEM; | |
55 | ||
56 | alignbuffer = (u8 *)ALIGN((unsigned long)buffer, alignmask + 1); | |
57 | memcpy(alignbuffer, key, keylen); | |
63293c61 | 58 | ret = tfm->setkey(tfm, alignbuffer, keylen); |
1ae97820 HX |
59 | memset(alignbuffer, 0, keylen); |
60 | kfree(buffer); | |
61 | return ret; | |
62 | } | |
63 | ||
5d1d65f8 HX |
64 | int crypto_aead_setkey(struct crypto_aead *tfm, |
65 | const u8 *key, unsigned int keylen) | |
1ae97820 | 66 | { |
1ae97820 HX |
67 | unsigned long alignmask = crypto_aead_alignmask(tfm); |
68 | ||
5d1d65f8 HX |
69 | tfm = tfm->child; |
70 | ||
1ae97820 HX |
71 | if ((unsigned long)key & alignmask) |
72 | return setkey_unaligned(tfm, key, keylen); | |
73 | ||
63293c61 | 74 | return tfm->setkey(tfm, key, keylen); |
1ae97820 | 75 | } |
5d1d65f8 | 76 | EXPORT_SYMBOL_GPL(crypto_aead_setkey); |
1ae97820 | 77 | |
7ba683a6 HX |
78 | int crypto_aead_setauthsize(struct crypto_aead *tfm, unsigned int authsize) |
79 | { | |
80 | int err; | |
81 | ||
30e4c010 | 82 | if (authsize > crypto_aead_maxauthsize(tfm)) |
7ba683a6 HX |
83 | return -EINVAL; |
84 | ||
63293c61 HX |
85 | if (tfm->setauthsize) { |
86 | err = tfm->setauthsize(tfm->child, authsize); | |
7ba683a6 HX |
87 | if (err) |
88 | return err; | |
89 | } | |
90 | ||
5d1d65f8 HX |
91 | tfm->child->authsize = authsize; |
92 | tfm->authsize = authsize; | |
7ba683a6 HX |
93 | return 0; |
94 | } | |
95 | EXPORT_SYMBOL_GPL(crypto_aead_setauthsize); | |
96 | ||
996d98d8 HX |
97 | struct aead_old_request { |
98 | struct scatterlist srcbuf[2]; | |
99 | struct scatterlist dstbuf[2]; | |
100 | struct aead_request subreq; | |
101 | }; | |
102 | ||
103 | unsigned int crypto_aead_reqsize(struct crypto_aead *tfm) | |
104 | { | |
105 | return tfm->reqsize + sizeof(struct aead_old_request); | |
106 | } | |
107 | EXPORT_SYMBOL_GPL(crypto_aead_reqsize); | |
108 | ||
109 | static int old_crypt(struct aead_request *req, | |
110 | int (*crypt)(struct aead_request *req)) | |
111 | { | |
112 | struct aead_old_request *nreq = aead_request_ctx(req); | |
113 | struct crypto_aead *aead = crypto_aead_reqtfm(req); | |
114 | struct scatterlist *src, *dst; | |
115 | ||
116 | if (req->old) | |
117 | return crypt(req); | |
118 | ||
374d4ad1 | 119 | src = scatterwalk_ffwd(nreq->srcbuf, req->src, req->assoclen); |
b455eb80 HX |
120 | dst = req->src == req->dst ? |
121 | src : scatterwalk_ffwd(nreq->dstbuf, req->dst, req->assoclen); | |
996d98d8 HX |
122 | |
123 | aead_request_set_tfm(&nreq->subreq, aead); | |
124 | aead_request_set_callback(&nreq->subreq, aead_request_flags(req), | |
125 | req->base.complete, req->base.data); | |
126 | aead_request_set_crypt(&nreq->subreq, src, dst, req->cryptlen, | |
127 | req->iv); | |
128 | aead_request_set_assoc(&nreq->subreq, req->src, req->assoclen); | |
129 | ||
130 | return crypt(&nreq->subreq); | |
131 | } | |
132 | ||
133 | static int old_encrypt(struct aead_request *req) | |
134 | { | |
135 | struct crypto_aead *aead = crypto_aead_reqtfm(req); | |
2d0f230f | 136 | struct old_aead_alg *alg = crypto_old_aead_alg(aead); |
996d98d8 HX |
137 | |
138 | return old_crypt(req, alg->encrypt); | |
139 | } | |
140 | ||
141 | static int old_decrypt(struct aead_request *req) | |
142 | { | |
143 | struct crypto_aead *aead = crypto_aead_reqtfm(req); | |
2d0f230f | 144 | struct old_aead_alg *alg = crypto_old_aead_alg(aead); |
996d98d8 HX |
145 | |
146 | return old_crypt(req, alg->decrypt); | |
147 | } | |
148 | ||
aedb30dc | 149 | static int no_givcrypt(struct aead_givcrypt_request *req) |
743edf57 HX |
150 | { |
151 | return -ENOSYS; | |
152 | } | |
153 | ||
63293c61 | 154 | static int crypto_old_aead_init_tfm(struct crypto_tfm *tfm) |
1ae97820 | 155 | { |
2d0f230f | 156 | struct old_aead_alg *alg = &tfm->__crt_alg->cra_aead; |
5d1d65f8 | 157 | struct crypto_aead *crt = __crypto_aead_cast(tfm); |
1ae97820 | 158 | |
7ba683a6 | 159 | if (max(alg->maxauthsize, alg->ivsize) > PAGE_SIZE / 8) |
1ae97820 HX |
160 | return -EINVAL; |
161 | ||
63293c61 HX |
162 | crt->setkey = alg->setkey; |
163 | crt->setauthsize = alg->setauthsize; | |
996d98d8 HX |
164 | crt->encrypt = old_encrypt; |
165 | crt->decrypt = old_decrypt; | |
5d1d65f8 HX |
166 | if (alg->ivsize) { |
167 | crt->givencrypt = alg->givencrypt ?: no_givcrypt; | |
168 | crt->givdecrypt = alg->givdecrypt ?: no_givcrypt; | |
169 | } else { | |
170 | crt->givencrypt = aead_null_givencrypt; | |
171 | crt->givdecrypt = aead_null_givdecrypt; | |
172 | } | |
173 | crt->child = __crypto_aead_cast(tfm); | |
7ba683a6 | 174 | crt->authsize = alg->maxauthsize; |
1ae97820 HX |
175 | |
176 | return 0; | |
177 | } | |
178 | ||
5eb8ec6d HX |
179 | static void crypto_aead_exit_tfm(struct crypto_tfm *tfm) |
180 | { | |
181 | struct crypto_aead *aead = __crypto_aead_cast(tfm); | |
182 | struct aead_alg *alg = crypto_aead_alg(aead); | |
183 | ||
184 | alg->exit(aead); | |
185 | } | |
186 | ||
63293c61 HX |
187 | static int crypto_aead_init_tfm(struct crypto_tfm *tfm) |
188 | { | |
189 | struct crypto_aead *aead = __crypto_aead_cast(tfm); | |
190 | struct aead_alg *alg = crypto_aead_alg(aead); | |
191 | ||
192 | if (crypto_old_aead_alg(aead)->encrypt) | |
193 | return crypto_old_aead_init_tfm(tfm); | |
194 | ||
195 | aead->setkey = alg->setkey; | |
196 | aead->setauthsize = alg->setauthsize; | |
197 | aead->encrypt = alg->encrypt; | |
198 | aead->decrypt = alg->decrypt; | |
199 | aead->child = __crypto_aead_cast(tfm); | |
63293c61 HX |
200 | aead->authsize = alg->maxauthsize; |
201 | ||
5eb8ec6d HX |
202 | if (alg->exit) |
203 | aead->base.exit = crypto_aead_exit_tfm; | |
204 | ||
205 | if (alg->init) | |
206 | return alg->init(aead); | |
207 | ||
63293c61 HX |
208 | return 0; |
209 | } | |
210 | ||
3acc8473 | 211 | #ifdef CONFIG_NET |
63293c61 | 212 | static int crypto_old_aead_report(struct sk_buff *skb, struct crypto_alg *alg) |
6ad414fe SK |
213 | { |
214 | struct crypto_report_aead raead; | |
2d0f230f | 215 | struct old_aead_alg *aead = &alg->cra_aead; |
6ad414fe | 216 | |
9a5467bf MK |
217 | strncpy(raead.type, "aead", sizeof(raead.type)); |
218 | strncpy(raead.geniv, aead->geniv ?: "<built-in>", sizeof(raead.geniv)); | |
6ad414fe SK |
219 | |
220 | raead.blocksize = alg->cra_blocksize; | |
221 | raead.maxauthsize = aead->maxauthsize; | |
222 | raead.ivsize = aead->ivsize; | |
223 | ||
6662df33 DM |
224 | if (nla_put(skb, CRYPTOCFGA_REPORT_AEAD, |
225 | sizeof(struct crypto_report_aead), &raead)) | |
226 | goto nla_put_failure; | |
6ad414fe SK |
227 | return 0; |
228 | ||
229 | nla_put_failure: | |
230 | return -EMSGSIZE; | |
231 | } | |
3acc8473 | 232 | #else |
63293c61 | 233 | static int crypto_old_aead_report(struct sk_buff *skb, struct crypto_alg *alg) |
3acc8473 HX |
234 | { |
235 | return -ENOSYS; | |
236 | } | |
237 | #endif | |
6ad414fe | 238 | |
63293c61 | 239 | static void crypto_old_aead_show(struct seq_file *m, struct crypto_alg *alg) |
1ae97820 | 240 | __attribute__ ((unused)); |
63293c61 | 241 | static void crypto_old_aead_show(struct seq_file *m, struct crypto_alg *alg) |
1ae97820 | 242 | { |
2d0f230f | 243 | struct old_aead_alg *aead = &alg->cra_aead; |
1ae97820 HX |
244 | |
245 | seq_printf(m, "type : aead\n"); | |
189ed66e HX |
246 | seq_printf(m, "async : %s\n", alg->cra_flags & CRYPTO_ALG_ASYNC ? |
247 | "yes" : "no"); | |
1ae97820 HX |
248 | seq_printf(m, "blocksize : %u\n", alg->cra_blocksize); |
249 | seq_printf(m, "ivsize : %u\n", aead->ivsize); | |
7ba683a6 | 250 | seq_printf(m, "maxauthsize : %u\n", aead->maxauthsize); |
5b6d2d7f | 251 | seq_printf(m, "geniv : %s\n", aead->geniv ?: "<built-in>"); |
1ae97820 HX |
252 | } |
253 | ||
254 | const struct crypto_type crypto_aead_type = { | |
5d1d65f8 HX |
255 | .extsize = crypto_alg_extsize, |
256 | .init_tfm = crypto_aead_init_tfm, | |
1ae97820 | 257 | #ifdef CONFIG_PROC_FS |
63293c61 | 258 | .show = crypto_old_aead_show, |
1ae97820 | 259 | #endif |
63293c61 | 260 | .report = crypto_old_aead_report, |
5d1d65f8 HX |
261 | .lookup = crypto_lookup_aead, |
262 | .maskclear = ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV), | |
263 | .maskset = CRYPTO_ALG_TYPE_MASK, | |
264 | .type = CRYPTO_ALG_TYPE_AEAD, | |
265 | .tfmsize = offsetof(struct crypto_aead, base), | |
1ae97820 HX |
266 | }; |
267 | EXPORT_SYMBOL_GPL(crypto_aead_type); | |
268 | ||
63293c61 HX |
269 | #ifdef CONFIG_NET |
270 | static int crypto_aead_report(struct sk_buff *skb, struct crypto_alg *alg) | |
271 | { | |
272 | struct crypto_report_aead raead; | |
273 | struct aead_alg *aead = container_of(alg, struct aead_alg, base); | |
274 | ||
275 | strncpy(raead.type, "aead", sizeof(raead.type)); | |
276 | strncpy(raead.geniv, "<none>", sizeof(raead.geniv)); | |
277 | ||
278 | raead.blocksize = alg->cra_blocksize; | |
279 | raead.maxauthsize = aead->maxauthsize; | |
280 | raead.ivsize = aead->ivsize; | |
281 | ||
282 | if (nla_put(skb, CRYPTOCFGA_REPORT_AEAD, | |
283 | sizeof(struct crypto_report_aead), &raead)) | |
284 | goto nla_put_failure; | |
285 | return 0; | |
286 | ||
287 | nla_put_failure: | |
288 | return -EMSGSIZE; | |
289 | } | |
290 | #else | |
291 | static int crypto_aead_report(struct sk_buff *skb, struct crypto_alg *alg) | |
292 | { | |
293 | return -ENOSYS; | |
294 | } | |
295 | #endif | |
296 | ||
297 | static void crypto_aead_show(struct seq_file *m, struct crypto_alg *alg) | |
298 | __attribute__ ((unused)); | |
299 | static void crypto_aead_show(struct seq_file *m, struct crypto_alg *alg) | |
300 | { | |
301 | struct aead_alg *aead = container_of(alg, struct aead_alg, base); | |
302 | ||
303 | seq_printf(m, "type : aead\n"); | |
304 | seq_printf(m, "async : %s\n", alg->cra_flags & CRYPTO_ALG_ASYNC ? | |
305 | "yes" : "no"); | |
306 | seq_printf(m, "blocksize : %u\n", alg->cra_blocksize); | |
307 | seq_printf(m, "ivsize : %u\n", aead->ivsize); | |
308 | seq_printf(m, "maxauthsize : %u\n", aead->maxauthsize); | |
309 | seq_printf(m, "geniv : <none>\n"); | |
310 | } | |
311 | ||
ba75e15f HX |
312 | static void crypto_aead_free_instance(struct crypto_instance *inst) |
313 | { | |
314 | struct aead_instance *aead = aead_instance(inst); | |
315 | ||
316 | if (!aead->free) { | |
317 | inst->tmpl->free(inst); | |
318 | return; | |
319 | } | |
320 | ||
321 | aead->free(aead); | |
322 | } | |
323 | ||
63293c61 HX |
324 | static const struct crypto_type crypto_new_aead_type = { |
325 | .extsize = crypto_alg_extsize, | |
326 | .init_tfm = crypto_aead_init_tfm, | |
ba75e15f | 327 | .free = crypto_aead_free_instance, |
63293c61 HX |
328 | #ifdef CONFIG_PROC_FS |
329 | .show = crypto_aead_show, | |
330 | #endif | |
331 | .report = crypto_aead_report, | |
332 | .maskclear = ~CRYPTO_ALG_TYPE_MASK, | |
333 | .maskset = CRYPTO_ALG_TYPE_MASK, | |
334 | .type = CRYPTO_ALG_TYPE_AEAD, | |
335 | .tfmsize = offsetof(struct crypto_aead, base), | |
336 | }; | |
337 | ||
5b6d2d7f HX |
338 | static int aead_null_givencrypt(struct aead_givcrypt_request *req) |
339 | { | |
340 | return crypto_aead_encrypt(&req->areq); | |
341 | } | |
342 | ||
343 | static int aead_null_givdecrypt(struct aead_givcrypt_request *req) | |
344 | { | |
345 | return crypto_aead_decrypt(&req->areq); | |
346 | } | |
347 | ||
3acc8473 | 348 | #ifdef CONFIG_NET |
b735d0a9 SK |
349 | static int crypto_nivaead_report(struct sk_buff *skb, struct crypto_alg *alg) |
350 | { | |
351 | struct crypto_report_aead raead; | |
2d0f230f | 352 | struct old_aead_alg *aead = &alg->cra_aead; |
b735d0a9 | 353 | |
9a5467bf MK |
354 | strncpy(raead.type, "nivaead", sizeof(raead.type)); |
355 | strncpy(raead.geniv, aead->geniv, sizeof(raead.geniv)); | |
b735d0a9 SK |
356 | |
357 | raead.blocksize = alg->cra_blocksize; | |
358 | raead.maxauthsize = aead->maxauthsize; | |
359 | raead.ivsize = aead->ivsize; | |
360 | ||
6662df33 DM |
361 | if (nla_put(skb, CRYPTOCFGA_REPORT_AEAD, |
362 | sizeof(struct crypto_report_aead), &raead)) | |
363 | goto nla_put_failure; | |
b735d0a9 SK |
364 | return 0; |
365 | ||
366 | nla_put_failure: | |
367 | return -EMSGSIZE; | |
368 | } | |
3acc8473 HX |
369 | #else |
370 | static int crypto_nivaead_report(struct sk_buff *skb, struct crypto_alg *alg) | |
371 | { | |
372 | return -ENOSYS; | |
373 | } | |
374 | #endif | |
b735d0a9 SK |
375 | |
376 | ||
5b6d2d7f HX |
377 | static void crypto_nivaead_show(struct seq_file *m, struct crypto_alg *alg) |
378 | __attribute__ ((unused)); | |
379 | static void crypto_nivaead_show(struct seq_file *m, struct crypto_alg *alg) | |
380 | { | |
2d0f230f | 381 | struct old_aead_alg *aead = &alg->cra_aead; |
5b6d2d7f HX |
382 | |
383 | seq_printf(m, "type : nivaead\n"); | |
189ed66e HX |
384 | seq_printf(m, "async : %s\n", alg->cra_flags & CRYPTO_ALG_ASYNC ? |
385 | "yes" : "no"); | |
5b6d2d7f HX |
386 | seq_printf(m, "blocksize : %u\n", alg->cra_blocksize); |
387 | seq_printf(m, "ivsize : %u\n", aead->ivsize); | |
388 | seq_printf(m, "maxauthsize : %u\n", aead->maxauthsize); | |
389 | seq_printf(m, "geniv : %s\n", aead->geniv); | |
390 | } | |
391 | ||
392 | const struct crypto_type crypto_nivaead_type = { | |
5d1d65f8 HX |
393 | .extsize = crypto_alg_extsize, |
394 | .init_tfm = crypto_aead_init_tfm, | |
5b6d2d7f HX |
395 | #ifdef CONFIG_PROC_FS |
396 | .show = crypto_nivaead_show, | |
397 | #endif | |
b735d0a9 | 398 | .report = crypto_nivaead_report, |
5d1d65f8 HX |
399 | .maskclear = ~(CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV), |
400 | .maskset = CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV, | |
401 | .type = CRYPTO_ALG_TYPE_AEAD, | |
402 | .tfmsize = offsetof(struct crypto_aead, base), | |
5b6d2d7f HX |
403 | }; |
404 | EXPORT_SYMBOL_GPL(crypto_nivaead_type); | |
405 | ||
406 | static int crypto_grab_nivaead(struct crypto_aead_spawn *spawn, | |
407 | const char *name, u32 type, u32 mask) | |
408 | { | |
5d1d65f8 HX |
409 | spawn->base.frontend = &crypto_nivaead_type; |
410 | return crypto_grab_spawn(&spawn->base, name, type, mask); | |
5b6d2d7f HX |
411 | } |
412 | ||
6350449f HX |
413 | static int aead_geniv_setkey(struct crypto_aead *tfm, |
414 | const u8 *key, unsigned int keylen) | |
415 | { | |
416 | struct aead_geniv_ctx *ctx = crypto_aead_ctx(tfm); | |
417 | ||
418 | return crypto_aead_setkey(ctx->child, key, keylen); | |
419 | } | |
420 | ||
421 | static int aead_geniv_setauthsize(struct crypto_aead *tfm, | |
422 | unsigned int authsize) | |
423 | { | |
424 | struct aead_geniv_ctx *ctx = crypto_aead_ctx(tfm); | |
425 | ||
426 | return crypto_aead_setauthsize(ctx->child, authsize); | |
427 | } | |
428 | ||
429 | static void compat_encrypt_complete2(struct aead_request *req, int err) | |
430 | { | |
431 | struct compat_request_ctx *rctx = aead_request_ctx(req); | |
432 | struct aead_givcrypt_request *subreq = &rctx->subreq; | |
433 | struct crypto_aead *geniv; | |
434 | ||
435 | if (err == -EINPROGRESS) | |
436 | return; | |
437 | ||
438 | if (err) | |
439 | goto out; | |
440 | ||
441 | geniv = crypto_aead_reqtfm(req); | |
442 | scatterwalk_map_and_copy(subreq->giv, rctx->ivsg, 0, | |
443 | crypto_aead_ivsize(geniv), 1); | |
444 | ||
445 | out: | |
446 | kzfree(subreq->giv); | |
447 | } | |
448 | ||
449 | static void compat_encrypt_complete(struct crypto_async_request *base, int err) | |
450 | { | |
451 | struct aead_request *req = base->data; | |
452 | ||
453 | compat_encrypt_complete2(req, err); | |
454 | aead_request_complete(req, err); | |
455 | } | |
456 | ||
457 | static int compat_encrypt(struct aead_request *req) | |
458 | { | |
459 | struct crypto_aead *geniv = crypto_aead_reqtfm(req); | |
460 | struct aead_geniv_ctx *ctx = crypto_aead_ctx(geniv); | |
461 | struct compat_request_ctx *rctx = aead_request_ctx(req); | |
462 | struct aead_givcrypt_request *subreq = &rctx->subreq; | |
463 | unsigned int ivsize = crypto_aead_ivsize(geniv); | |
464 | struct scatterlist *src, *dst; | |
465 | crypto_completion_t compl; | |
466 | void *data; | |
467 | u8 *info; | |
468 | __be64 seq; | |
469 | int err; | |
470 | ||
471 | if (req->cryptlen < ivsize) | |
472 | return -EINVAL; | |
473 | ||
474 | compl = req->base.complete; | |
475 | data = req->base.data; | |
476 | ||
477 | rctx->ivsg = scatterwalk_ffwd(rctx->ivbuf, req->dst, req->assoclen); | |
478 | info = PageHighMem(sg_page(rctx->ivsg)) ? NULL : sg_virt(rctx->ivsg); | |
479 | ||
480 | if (!info) { | |
481 | info = kmalloc(ivsize, req->base.flags & | |
482 | CRYPTO_TFM_REQ_MAY_SLEEP ? GFP_KERNEL: | |
483 | GFP_ATOMIC); | |
484 | if (!info) | |
485 | return -ENOMEM; | |
486 | ||
487 | compl = compat_encrypt_complete; | |
488 | data = req; | |
489 | } | |
490 | ||
491 | memcpy(&seq, req->iv + ivsize - sizeof(seq), sizeof(seq)); | |
492 | ||
493 | src = scatterwalk_ffwd(rctx->src, req->src, req->assoclen + ivsize); | |
494 | dst = req->src == req->dst ? | |
495 | src : scatterwalk_ffwd(rctx->dst, rctx->ivsg, ivsize); | |
496 | ||
497 | aead_givcrypt_set_tfm(subreq, ctx->child); | |
498 | aead_givcrypt_set_callback(subreq, req->base.flags, | |
499 | req->base.complete, req->base.data); | |
500 | aead_givcrypt_set_crypt(subreq, src, dst, | |
501 | req->cryptlen - ivsize, req->iv); | |
502 | aead_givcrypt_set_assoc(subreq, req->src, req->assoclen); | |
503 | aead_givcrypt_set_giv(subreq, info, be64_to_cpu(seq)); | |
504 | ||
505 | err = crypto_aead_givencrypt(subreq); | |
506 | if (unlikely(PageHighMem(sg_page(rctx->ivsg)))) | |
507 | compat_encrypt_complete2(req, err); | |
508 | return err; | |
509 | } | |
510 | ||
511 | static int compat_decrypt(struct aead_request *req) | |
512 | { | |
513 | struct crypto_aead *geniv = crypto_aead_reqtfm(req); | |
514 | struct aead_geniv_ctx *ctx = crypto_aead_ctx(geniv); | |
515 | struct compat_request_ctx *rctx = aead_request_ctx(req); | |
516 | struct aead_request *subreq = &rctx->subreq.areq; | |
517 | unsigned int ivsize = crypto_aead_ivsize(geniv); | |
518 | struct scatterlist *src, *dst; | |
519 | crypto_completion_t compl; | |
520 | void *data; | |
521 | ||
522 | if (req->cryptlen < ivsize) | |
523 | return -EINVAL; | |
524 | ||
525 | aead_request_set_tfm(subreq, ctx->child); | |
526 | ||
527 | compl = req->base.complete; | |
528 | data = req->base.data; | |
529 | ||
530 | src = scatterwalk_ffwd(rctx->src, req->src, req->assoclen + ivsize); | |
531 | dst = req->src == req->dst ? | |
532 | src : scatterwalk_ffwd(rctx->dst, req->dst, | |
533 | req->assoclen + ivsize); | |
534 | ||
535 | aead_request_set_callback(subreq, req->base.flags, compl, data); | |
536 | aead_request_set_crypt(subreq, src, dst, | |
537 | req->cryptlen - ivsize, req->iv); | |
538 | aead_request_set_assoc(subreq, req->src, req->assoclen); | |
539 | ||
540 | scatterwalk_map_and_copy(req->iv, req->src, req->assoclen, ivsize, 0); | |
541 | ||
542 | return crypto_aead_decrypt(subreq); | |
543 | } | |
544 | ||
545 | static int compat_encrypt_first(struct aead_request *req) | |
546 | { | |
547 | struct crypto_aead *geniv = crypto_aead_reqtfm(req); | |
548 | struct aead_geniv_ctx *ctx = crypto_aead_ctx(geniv); | |
549 | int err = 0; | |
550 | ||
551 | spin_lock_bh(&ctx->lock); | |
552 | if (geniv->encrypt != compat_encrypt_first) | |
553 | goto unlock; | |
554 | ||
555 | geniv->encrypt = compat_encrypt; | |
556 | ||
557 | unlock: | |
558 | spin_unlock_bh(&ctx->lock); | |
559 | ||
560 | if (err) | |
561 | return err; | |
562 | ||
563 | return compat_encrypt(req); | |
564 | } | |
565 | ||
566 | static int aead_geniv_init_compat(struct crypto_tfm *tfm) | |
567 | { | |
568 | struct crypto_aead *geniv = __crypto_aead_cast(tfm); | |
569 | struct aead_geniv_ctx *ctx = crypto_aead_ctx(geniv); | |
570 | int err; | |
571 | ||
572 | spin_lock_init(&ctx->lock); | |
573 | ||
574 | crypto_aead_set_reqsize(geniv, sizeof(struct compat_request_ctx)); | |
575 | ||
576 | err = aead_geniv_init(tfm); | |
577 | ||
578 | ctx->child = geniv->child; | |
579 | geniv->child = geniv; | |
580 | ||
581 | return err; | |
582 | } | |
583 | ||
584 | static void aead_geniv_exit_compat(struct crypto_tfm *tfm) | |
585 | { | |
586 | struct crypto_aead *geniv = __crypto_aead_cast(tfm); | |
587 | struct aead_geniv_ctx *ctx = crypto_aead_ctx(geniv); | |
588 | ||
589 | crypto_free_aead(ctx->child); | |
590 | } | |
591 | ||
856e3f40 HX |
592 | struct aead_instance *aead_geniv_alloc(struct crypto_template *tmpl, |
593 | struct rtattr **tb, u32 type, u32 mask) | |
5b6d2d7f HX |
594 | { |
595 | const char *name; | |
596 | struct crypto_aead_spawn *spawn; | |
597 | struct crypto_attr_type *algt; | |
856e3f40 HX |
598 | struct aead_instance *inst; |
599 | struct aead_alg *alg; | |
600 | unsigned int ivsize; | |
601 | unsigned int maxauthsize; | |
5b6d2d7f HX |
602 | int err; |
603 | ||
604 | algt = crypto_get_attr_type(tb); | |
5b6d2d7f | 605 | if (IS_ERR(algt)) |
3e8afe35 | 606 | return ERR_CAST(algt); |
5b6d2d7f HX |
607 | |
608 | if ((algt->type ^ (CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_GENIV)) & | |
e13f0f6d | 609 | algt->mask & ~CRYPTO_ALG_AEAD_NEW) |
5b6d2d7f HX |
610 | return ERR_PTR(-EINVAL); |
611 | ||
612 | name = crypto_attr_alg_name(tb[1]); | |
5b6d2d7f | 613 | if (IS_ERR(name)) |
3e8afe35 | 614 | return ERR_CAST(name); |
5b6d2d7f HX |
615 | |
616 | inst = kzalloc(sizeof(*inst) + sizeof(*spawn), GFP_KERNEL); | |
617 | if (!inst) | |
618 | return ERR_PTR(-ENOMEM); | |
619 | ||
856e3f40 | 620 | spawn = aead_instance_ctx(inst); |
5b6d2d7f HX |
621 | |
622 | /* Ignore async algorithms if necessary. */ | |
623 | mask |= crypto_requires_sync(algt->type, algt->mask); | |
624 | ||
856e3f40 | 625 | crypto_set_aead_spawn(spawn, aead_crypto_instance(inst)); |
6350449f HX |
626 | err = (algt->mask & CRYPTO_ALG_GENIV) ? |
627 | crypto_grab_nivaead(spawn, name, type, mask) : | |
628 | crypto_grab_aead(spawn, name, type, mask); | |
5b6d2d7f HX |
629 | if (err) |
630 | goto err_free_inst; | |
631 | ||
856e3f40 HX |
632 | alg = crypto_spawn_aead_alg(spawn); |
633 | ||
30e4c010 HX |
634 | ivsize = crypto_aead_alg_ivsize(alg); |
635 | maxauthsize = crypto_aead_alg_maxauthsize(alg); | |
5b6d2d7f HX |
636 | |
637 | err = -EINVAL; | |
6350449f | 638 | if (ivsize < sizeof(u64)) |
5b6d2d7f HX |
639 | goto err_drop_alg; |
640 | ||
641 | /* | |
642 | * This is only true if we're constructing an algorithm with its | |
643 | * default IV generator. For the default generator we elide the | |
644 | * template name and double-check the IV generator. | |
645 | */ | |
646 | if (algt->mask & CRYPTO_ALG_GENIV) { | |
856e3f40 HX |
647 | if (!alg->base.cra_aead.encrypt) |
648 | goto err_drop_alg; | |
649 | if (strcmp(tmpl->name, alg->base.cra_aead.geniv)) | |
5b6d2d7f HX |
650 | goto err_drop_alg; |
651 | ||
856e3f40 | 652 | memcpy(inst->alg.base.cra_name, alg->base.cra_name, |
5b6d2d7f | 653 | CRYPTO_MAX_ALG_NAME); |
856e3f40 HX |
654 | memcpy(inst->alg.base.cra_driver_name, |
655 | alg->base.cra_driver_name, CRYPTO_MAX_ALG_NAME); | |
656 | ||
657 | inst->alg.base.cra_flags = CRYPTO_ALG_TYPE_AEAD | | |
658 | CRYPTO_ALG_GENIV; | |
659 | inst->alg.base.cra_flags |= alg->base.cra_flags & | |
660 | CRYPTO_ALG_ASYNC; | |
661 | inst->alg.base.cra_priority = alg->base.cra_priority; | |
662 | inst->alg.base.cra_blocksize = alg->base.cra_blocksize; | |
663 | inst->alg.base.cra_alignmask = alg->base.cra_alignmask; | |
664 | inst->alg.base.cra_type = &crypto_aead_type; | |
665 | ||
666 | inst->alg.base.cra_aead.ivsize = ivsize; | |
667 | inst->alg.base.cra_aead.maxauthsize = maxauthsize; | |
668 | ||
669 | inst->alg.base.cra_aead.setkey = alg->base.cra_aead.setkey; | |
670 | inst->alg.base.cra_aead.setauthsize = | |
671 | alg->base.cra_aead.setauthsize; | |
672 | inst->alg.base.cra_aead.encrypt = alg->base.cra_aead.encrypt; | |
673 | inst->alg.base.cra_aead.decrypt = alg->base.cra_aead.decrypt; | |
674 | ||
675 | goto out; | |
5b6d2d7f HX |
676 | } |
677 | ||
856e3f40 HX |
678 | err = -ENAMETOOLONG; |
679 | if (snprintf(inst->alg.base.cra_name, CRYPTO_MAX_ALG_NAME, | |
680 | "%s(%s)", tmpl->name, alg->base.cra_name) >= | |
681 | CRYPTO_MAX_ALG_NAME) | |
682 | goto err_drop_alg; | |
683 | if (snprintf(inst->alg.base.cra_driver_name, CRYPTO_MAX_ALG_NAME, | |
684 | "%s(%s)", tmpl->name, alg->base.cra_driver_name) >= | |
685 | CRYPTO_MAX_ALG_NAME) | |
686 | goto err_drop_alg; | |
5b6d2d7f | 687 | |
e13f0f6d HX |
688 | inst->alg.base.cra_flags = alg->base.cra_flags & |
689 | (CRYPTO_ALG_ASYNC | CRYPTO_ALG_AEAD_NEW); | |
856e3f40 HX |
690 | inst->alg.base.cra_priority = alg->base.cra_priority; |
691 | inst->alg.base.cra_blocksize = alg->base.cra_blocksize; | |
692 | inst->alg.base.cra_alignmask = alg->base.cra_alignmask; | |
6350449f HX |
693 | inst->alg.base.cra_ctxsize = sizeof(struct aead_geniv_ctx); |
694 | ||
695 | inst->alg.setkey = aead_geniv_setkey; | |
696 | inst->alg.setauthsize = aead_geniv_setauthsize; | |
5b6d2d7f | 697 | |
856e3f40 HX |
698 | inst->alg.ivsize = ivsize; |
699 | inst->alg.maxauthsize = maxauthsize; | |
5b6d2d7f | 700 | |
6350449f HX |
701 | inst->alg.encrypt = compat_encrypt_first; |
702 | inst->alg.decrypt = compat_decrypt; | |
703 | ||
704 | inst->alg.base.cra_init = aead_geniv_init_compat; | |
705 | inst->alg.base.cra_exit = aead_geniv_exit_compat; | |
706 | ||
5b6d2d7f HX |
707 | out: |
708 | return inst; | |
709 | ||
710 | err_drop_alg: | |
711 | crypto_drop_aead(spawn); | |
712 | err_free_inst: | |
713 | kfree(inst); | |
714 | inst = ERR_PTR(err); | |
715 | goto out; | |
716 | } | |
717 | EXPORT_SYMBOL_GPL(aead_geniv_alloc); | |
718 | ||
856e3f40 | 719 | void aead_geniv_free(struct aead_instance *inst) |
5b6d2d7f | 720 | { |
856e3f40 | 721 | crypto_drop_aead(aead_instance_ctx(inst)); |
5b6d2d7f HX |
722 | kfree(inst); |
723 | } | |
724 | EXPORT_SYMBOL_GPL(aead_geniv_free); | |
725 | ||
726 | int aead_geniv_init(struct crypto_tfm *tfm) | |
727 | { | |
728 | struct crypto_instance *inst = (void *)tfm->__crt_alg; | |
5d1d65f8 | 729 | struct crypto_aead *child; |
5b6d2d7f HX |
730 | struct crypto_aead *aead; |
731 | ||
5d1d65f8 | 732 | aead = __crypto_aead_cast(tfm); |
5b6d2d7f | 733 | |
5d1d65f8 HX |
734 | child = crypto_spawn_aead(crypto_instance_ctx(inst)); |
735 | if (IS_ERR(child)) | |
736 | return PTR_ERR(child); | |
737 | ||
738 | aead->child = child; | |
739 | aead->reqsize += crypto_aead_reqsize(child); | |
5b6d2d7f HX |
740 | |
741 | return 0; | |
742 | } | |
743 | EXPORT_SYMBOL_GPL(aead_geniv_init); | |
744 | ||
745 | void aead_geniv_exit(struct crypto_tfm *tfm) | |
746 | { | |
5d1d65f8 | 747 | crypto_free_aead(__crypto_aead_cast(tfm)->child); |
5b6d2d7f HX |
748 | } |
749 | EXPORT_SYMBOL_GPL(aead_geniv_exit); | |
750 | ||
149a3971 HX |
751 | int aead_init_geniv(struct crypto_aead *aead) |
752 | { | |
753 | struct aead_geniv_ctx *ctx = crypto_aead_ctx(aead); | |
754 | struct aead_instance *inst = aead_alg_instance(aead); | |
755 | struct crypto_aead *child; | |
756 | int err; | |
757 | ||
758 | spin_lock_init(&ctx->lock); | |
759 | ||
760 | err = crypto_get_default_rng(); | |
761 | if (err) | |
762 | goto out; | |
763 | ||
764 | err = crypto_rng_get_bytes(crypto_default_rng, ctx->salt, | |
765 | crypto_aead_ivsize(aead)); | |
766 | crypto_put_default_rng(); | |
767 | if (err) | |
768 | goto out; | |
769 | ||
770 | ctx->null = crypto_get_default_null_skcipher(); | |
771 | err = PTR_ERR(ctx->null); | |
772 | if (IS_ERR(ctx->null)) | |
773 | goto out; | |
774 | ||
775 | child = crypto_spawn_aead(aead_instance_ctx(inst)); | |
776 | err = PTR_ERR(child); | |
777 | if (IS_ERR(child)) | |
778 | goto drop_null; | |
779 | ||
780 | ctx->child = child; | |
781 | crypto_aead_set_reqsize(aead, crypto_aead_reqsize(child) + | |
782 | sizeof(struct aead_request)); | |
783 | ||
784 | err = 0; | |
785 | ||
786 | out: | |
787 | return err; | |
788 | ||
789 | drop_null: | |
790 | crypto_put_default_null_skcipher(); | |
791 | goto out; | |
792 | } | |
793 | EXPORT_SYMBOL_GPL(aead_init_geniv); | |
794 | ||
795 | void aead_exit_geniv(struct crypto_aead *tfm) | |
796 | { | |
797 | struct aead_geniv_ctx *ctx = crypto_aead_ctx(tfm); | |
798 | ||
799 | crypto_free_aead(ctx->child); | |
800 | crypto_put_default_null_skcipher(); | |
801 | } | |
802 | EXPORT_SYMBOL_GPL(aead_exit_geniv); | |
803 | ||
d29ce988 HX |
804 | static int crypto_nivaead_default(struct crypto_alg *alg, u32 type, u32 mask) |
805 | { | |
806 | struct rtattr *tb[3]; | |
807 | struct { | |
808 | struct rtattr attr; | |
809 | struct crypto_attr_type data; | |
810 | } ptype; | |
811 | struct { | |
812 | struct rtattr attr; | |
813 | struct crypto_attr_alg data; | |
814 | } palg; | |
815 | struct crypto_template *tmpl; | |
816 | struct crypto_instance *inst; | |
817 | struct crypto_alg *larval; | |
818 | const char *geniv; | |
819 | int err; | |
820 | ||
821 | larval = crypto_larval_lookup(alg->cra_driver_name, | |
822 | CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_GENIV, | |
823 | CRYPTO_ALG_TYPE_MASK | CRYPTO_ALG_GENIV); | |
824 | err = PTR_ERR(larval); | |
825 | if (IS_ERR(larval)) | |
826 | goto out; | |
827 | ||
828 | err = -EAGAIN; | |
829 | if (!crypto_is_larval(larval)) | |
830 | goto drop_larval; | |
831 | ||
832 | ptype.attr.rta_len = sizeof(ptype); | |
833 | ptype.attr.rta_type = CRYPTOA_TYPE; | |
834 | ptype.data.type = type | CRYPTO_ALG_GENIV; | |
835 | /* GENIV tells the template that we're making a default geniv. */ | |
836 | ptype.data.mask = mask | CRYPTO_ALG_GENIV; | |
837 | tb[0] = &ptype.attr; | |
838 | ||
839 | palg.attr.rta_len = sizeof(palg); | |
840 | palg.attr.rta_type = CRYPTOA_ALG; | |
841 | /* Must use the exact name to locate ourselves. */ | |
842 | memcpy(palg.data.name, alg->cra_driver_name, CRYPTO_MAX_ALG_NAME); | |
843 | tb[1] = &palg.attr; | |
844 | ||
845 | tb[2] = NULL; | |
846 | ||
847 | geniv = alg->cra_aead.geniv; | |
848 | ||
849 | tmpl = crypto_lookup_template(geniv); | |
850 | err = -ENOENT; | |
851 | if (!tmpl) | |
852 | goto kill_larval; | |
853 | ||
72af865d HX |
854 | if (tmpl->create) { |
855 | err = tmpl->create(tmpl, tb); | |
856 | if (err) | |
857 | goto put_tmpl; | |
858 | goto ok; | |
859 | } | |
860 | ||
d29ce988 HX |
861 | inst = tmpl->alloc(tb); |
862 | err = PTR_ERR(inst); | |
863 | if (IS_ERR(inst)) | |
864 | goto put_tmpl; | |
865 | ||
4fad478a JJ |
866 | err = crypto_register_instance(tmpl, inst); |
867 | if (err) { | |
d29ce988 HX |
868 | tmpl->free(inst); |
869 | goto put_tmpl; | |
870 | } | |
871 | ||
72af865d | 872 | ok: |
d29ce988 HX |
873 | /* Redo the lookup to use the instance we just registered. */ |
874 | err = -EAGAIN; | |
875 | ||
876 | put_tmpl: | |
877 | crypto_tmpl_put(tmpl); | |
878 | kill_larval: | |
879 | crypto_larval_kill(larval); | |
880 | drop_larval: | |
881 | crypto_mod_put(larval); | |
882 | out: | |
883 | crypto_mod_put(alg); | |
884 | return err; | |
885 | } | |
886 | ||
1e122994 | 887 | struct crypto_alg *crypto_lookup_aead(const char *name, u32 type, u32 mask) |
d29ce988 HX |
888 | { |
889 | struct crypto_alg *alg; | |
890 | ||
891 | alg = crypto_alg_mod_lookup(name, type, mask); | |
892 | if (IS_ERR(alg)) | |
893 | return alg; | |
894 | ||
895 | if (alg->cra_type == &crypto_aead_type) | |
896 | return alg; | |
897 | ||
898 | if (!alg->cra_aead.ivsize) | |
899 | return alg; | |
900 | ||
5852ae42 HX |
901 | crypto_mod_put(alg); |
902 | alg = crypto_alg_mod_lookup(name, type | CRYPTO_ALG_TESTED, | |
903 | mask & ~CRYPTO_ALG_TESTED); | |
904 | if (IS_ERR(alg)) | |
905 | return alg; | |
906 | ||
907 | if (alg->cra_type == &crypto_aead_type) { | |
80f7b355 | 908 | if (~alg->cra_flags & (type ^ ~mask) & CRYPTO_ALG_TESTED) { |
5852ae42 HX |
909 | crypto_mod_put(alg); |
910 | alg = ERR_PTR(-ENOENT); | |
911 | } | |
912 | return alg; | |
913 | } | |
914 | ||
915 | BUG_ON(!alg->cra_aead.ivsize); | |
916 | ||
d29ce988 HX |
917 | return ERR_PTR(crypto_nivaead_default(alg, type, mask)); |
918 | } | |
1e122994 | 919 | EXPORT_SYMBOL_GPL(crypto_lookup_aead); |
d29ce988 HX |
920 | |
921 | int crypto_grab_aead(struct crypto_aead_spawn *spawn, const char *name, | |
922 | u32 type, u32 mask) | |
923 | { | |
5d1d65f8 HX |
924 | spawn->base.frontend = &crypto_aead_type; |
925 | return crypto_grab_spawn(&spawn->base, name, type, mask); | |
d29ce988 HX |
926 | } |
927 | EXPORT_SYMBOL_GPL(crypto_grab_aead); | |
928 | ||
929 | struct crypto_aead *crypto_alloc_aead(const char *alg_name, u32 type, u32 mask) | |
930 | { | |
5d1d65f8 | 931 | return crypto_alloc_tfm(alg_name, &crypto_aead_type, type, mask); |
d29ce988 HX |
932 | } |
933 | EXPORT_SYMBOL_GPL(crypto_alloc_aead); | |
934 | ||
63293c61 HX |
935 | static int aead_prepare_alg(struct aead_alg *alg) |
936 | { | |
937 | struct crypto_alg *base = &alg->base; | |
938 | ||
939 | if (max(alg->maxauthsize, alg->ivsize) > PAGE_SIZE / 8) | |
940 | return -EINVAL; | |
941 | ||
942 | base->cra_type = &crypto_new_aead_type; | |
943 | base->cra_flags &= ~CRYPTO_ALG_TYPE_MASK; | |
944 | base->cra_flags |= CRYPTO_ALG_TYPE_AEAD; | |
945 | ||
946 | return 0; | |
947 | } | |
948 | ||
949 | int crypto_register_aead(struct aead_alg *alg) | |
950 | { | |
951 | struct crypto_alg *base = &alg->base; | |
952 | int err; | |
953 | ||
954 | err = aead_prepare_alg(alg); | |
955 | if (err) | |
956 | return err; | |
957 | ||
958 | return crypto_register_alg(base); | |
959 | } | |
960 | EXPORT_SYMBOL_GPL(crypto_register_aead); | |
961 | ||
43615369 | 962 | void crypto_unregister_aead(struct aead_alg *alg) |
63293c61 | 963 | { |
43615369 | 964 | crypto_unregister_alg(&alg->base); |
63293c61 HX |
965 | } |
966 | EXPORT_SYMBOL_GPL(crypto_unregister_aead); | |
967 | ||
caab9461 HX |
968 | int crypto_register_aeads(struct aead_alg *algs, int count) |
969 | { | |
970 | int i, ret; | |
971 | ||
972 | for (i = 0; i < count; i++) { | |
973 | ret = crypto_register_aead(&algs[i]); | |
974 | if (ret) | |
975 | goto err; | |
976 | } | |
977 | ||
978 | return 0; | |
979 | ||
980 | err: | |
981 | for (--i; i >= 0; --i) | |
982 | crypto_unregister_aead(&algs[i]); | |
983 | ||
984 | return ret; | |
985 | } | |
986 | EXPORT_SYMBOL_GPL(crypto_register_aeads); | |
987 | ||
988 | void crypto_unregister_aeads(struct aead_alg *algs, int count) | |
989 | { | |
990 | int i; | |
991 | ||
992 | for (i = count - 1; i >= 0; --i) | |
993 | crypto_unregister_aead(&algs[i]); | |
994 | } | |
995 | EXPORT_SYMBOL_GPL(crypto_unregister_aeads); | |
996 | ||
63293c61 HX |
997 | int aead_register_instance(struct crypto_template *tmpl, |
998 | struct aead_instance *inst) | |
999 | { | |
1000 | int err; | |
1001 | ||
1002 | err = aead_prepare_alg(&inst->alg); | |
1003 | if (err) | |
1004 | return err; | |
1005 | ||
1006 | return crypto_register_instance(tmpl, aead_crypto_instance(inst)); | |
1007 | } | |
1008 | EXPORT_SYMBOL_GPL(aead_register_instance); | |
1009 | ||
1ae97820 HX |
1010 | MODULE_LICENSE("GPL"); |
1011 | MODULE_DESCRIPTION("Authenticated Encryption with Associated Data (AEAD)"); |