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Commit | Line | Data |
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3c09f17c HX |
1 | /* |
2 | * Authenc: Simple AEAD wrapper for IPsec | |
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 | ||
e56dd564 | 13 | #include <crypto/aead.h> |
5f7082ed | 14 | #include <crypto/internal/hash.h> |
9ffde35a | 15 | #include <crypto/internal/skcipher.h> |
e236d4a8 | 16 | #include <crypto/authenc.h> |
42c271c6 | 17 | #include <crypto/scatterwalk.h> |
3c09f17c HX |
18 | #include <linux/err.h> |
19 | #include <linux/init.h> | |
20 | #include <linux/kernel.h> | |
21 | #include <linux/module.h> | |
e236d4a8 | 22 | #include <linux/rtnetlink.h> |
3c09f17c HX |
23 | #include <linux/slab.h> |
24 | #include <linux/spinlock.h> | |
25 | ||
3c09f17c HX |
26 | struct authenc_instance_ctx { |
27 | struct crypto_spawn auth; | |
9ffde35a | 28 | struct crypto_skcipher_spawn enc; |
3c09f17c HX |
29 | }; |
30 | ||
31 | struct crypto_authenc_ctx { | |
32 | spinlock_t auth_lock; | |
33 | struct crypto_hash *auth; | |
34 | struct crypto_ablkcipher *enc; | |
35 | }; | |
36 | ||
37 | static int crypto_authenc_setkey(struct crypto_aead *authenc, const u8 *key, | |
38 | unsigned int keylen) | |
39 | { | |
3c09f17c | 40 | unsigned int authkeylen; |
e236d4a8 | 41 | unsigned int enckeylen; |
3c09f17c HX |
42 | struct crypto_authenc_ctx *ctx = crypto_aead_ctx(authenc); |
43 | struct crypto_hash *auth = ctx->auth; | |
44 | struct crypto_ablkcipher *enc = ctx->enc; | |
e236d4a8 HX |
45 | struct rtattr *rta = (void *)key; |
46 | struct crypto_authenc_key_param *param; | |
3c09f17c HX |
47 | int err = -EINVAL; |
48 | ||
12dc5e62 | 49 | if (!RTA_OK(rta, keylen)) |
e236d4a8 HX |
50 | goto badkey; |
51 | if (rta->rta_type != CRYPTO_AUTHENC_KEYA_PARAM) | |
52 | goto badkey; | |
53 | if (RTA_PAYLOAD(rta) < sizeof(*param)) | |
54 | goto badkey; | |
55 | ||
56 | param = RTA_DATA(rta); | |
57 | enckeylen = be32_to_cpu(param->enckeylen); | |
58 | ||
59 | key += RTA_ALIGN(rta->rta_len); | |
60 | keylen -= RTA_ALIGN(rta->rta_len); | |
61 | ||
62 | if (keylen < enckeylen) | |
63 | goto badkey; | |
64 | ||
3c09f17c HX |
65 | authkeylen = keylen - enckeylen; |
66 | ||
67 | crypto_hash_clear_flags(auth, CRYPTO_TFM_REQ_MASK); | |
68 | crypto_hash_set_flags(auth, crypto_aead_get_flags(authenc) & | |
69 | CRYPTO_TFM_REQ_MASK); | |
70 | err = crypto_hash_setkey(auth, key, authkeylen); | |
71 | crypto_aead_set_flags(authenc, crypto_hash_get_flags(auth) & | |
72 | CRYPTO_TFM_RES_MASK); | |
73 | ||
74 | if (err) | |
75 | goto out; | |
76 | ||
77 | crypto_ablkcipher_clear_flags(enc, CRYPTO_TFM_REQ_MASK); | |
78 | crypto_ablkcipher_set_flags(enc, crypto_aead_get_flags(authenc) & | |
79 | CRYPTO_TFM_REQ_MASK); | |
80 | err = crypto_ablkcipher_setkey(enc, key + authkeylen, enckeylen); | |
81 | crypto_aead_set_flags(authenc, crypto_ablkcipher_get_flags(enc) & | |
82 | CRYPTO_TFM_RES_MASK); | |
83 | ||
84 | out: | |
85 | return err; | |
e236d4a8 HX |
86 | |
87 | badkey: | |
88 | crypto_aead_set_flags(authenc, CRYPTO_TFM_RES_BAD_KEY_LEN); | |
89 | goto out; | |
3c09f17c HX |
90 | } |
91 | ||
e56dd564 HX |
92 | static void authenc_chain(struct scatterlist *head, struct scatterlist *sg, |
93 | int chain) | |
94 | { | |
95 | if (chain) { | |
96 | head->length += sg->length; | |
97 | sg = scatterwalk_sg_next(sg); | |
98 | } | |
99 | ||
100 | if (sg) | |
101 | scatterwalk_sg_chain(head, 2, sg); | |
102 | else | |
103 | sg_mark_end(head); | |
104 | } | |
105 | ||
7c3d703f HX |
106 | static u8 *crypto_authenc_hash(struct aead_request *req, unsigned int flags, |
107 | struct scatterlist *cipher, | |
108 | unsigned int cryptlen) | |
3c09f17c HX |
109 | { |
110 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); | |
3c09f17c HX |
111 | struct crypto_authenc_ctx *ctx = crypto_aead_ctx(authenc); |
112 | struct crypto_hash *auth = ctx->auth; | |
113 | struct hash_desc desc = { | |
114 | .tfm = auth, | |
7c3d703f | 115 | .flags = aead_request_flags(req) & flags, |
3c09f17c HX |
116 | }; |
117 | u8 *hash = aead_request_ctx(req); | |
3c09f17c HX |
118 | int err; |
119 | ||
120 | hash = (u8 *)ALIGN((unsigned long)hash + crypto_hash_alignmask(auth), | |
121 | crypto_hash_alignmask(auth) + 1); | |
122 | ||
123 | spin_lock_bh(&ctx->auth_lock); | |
124 | err = crypto_hash_init(&desc); | |
125 | if (err) | |
126 | goto auth_unlock; | |
127 | ||
128 | err = crypto_hash_update(&desc, req->assoc, req->assoclen); | |
129 | if (err) | |
130 | goto auth_unlock; | |
131 | ||
7c3d703f | 132 | err = crypto_hash_update(&desc, cipher, cryptlen); |
3c09f17c HX |
133 | if (err) |
134 | goto auth_unlock; | |
135 | ||
136 | err = crypto_hash_final(&desc, hash); | |
137 | auth_unlock: | |
138 | spin_unlock_bh(&ctx->auth_lock); | |
139 | ||
140 | if (err) | |
7c3d703f HX |
141 | return ERR_PTR(err); |
142 | ||
143 | return hash; | |
144 | } | |
145 | ||
e56dd564 HX |
146 | static int crypto_authenc_genicv(struct aead_request *req, u8 *iv, |
147 | unsigned int flags) | |
7c3d703f HX |
148 | { |
149 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); | |
150 | struct scatterlist *dst = req->dst; | |
e56dd564 HX |
151 | struct scatterlist cipher[2]; |
152 | struct page *dstp; | |
153 | unsigned int ivsize = crypto_aead_ivsize(authenc); | |
154 | unsigned int cryptlen; | |
155 | u8 *vdst; | |
7c3d703f HX |
156 | u8 *hash; |
157 | ||
e56dd564 HX |
158 | dstp = sg_page(dst); |
159 | vdst = PageHighMem(dstp) ? NULL : page_address(dstp) + dst->offset; | |
160 | ||
161 | sg_init_table(cipher, 2); | |
162 | sg_set_buf(cipher, iv, ivsize); | |
163 | authenc_chain(cipher, dst, vdst == iv + ivsize); | |
164 | ||
165 | cryptlen = req->cryptlen + ivsize; | |
166 | hash = crypto_authenc_hash(req, flags, cipher, cryptlen); | |
7c3d703f HX |
167 | if (IS_ERR(hash)) |
168 | return PTR_ERR(hash); | |
3c09f17c | 169 | |
e56dd564 | 170 | scatterwalk_map_and_copy(hash, cipher, cryptlen, |
7ba683a6 | 171 | crypto_aead_authsize(authenc), 1); |
3c09f17c HX |
172 | return 0; |
173 | } | |
174 | ||
175 | static void crypto_authenc_encrypt_done(struct crypto_async_request *req, | |
176 | int err) | |
177 | { | |
a697690b HX |
178 | struct aead_request *areq = req->data; |
179 | ||
e56dd564 | 180 | if (!err) { |
e56dd564 HX |
181 | struct crypto_aead *authenc = crypto_aead_reqtfm(areq); |
182 | struct crypto_authenc_ctx *ctx = crypto_aead_ctx(authenc); | |
183 | struct ablkcipher_request *abreq = aead_request_ctx(areq); | |
184 | u8 *iv = (u8 *)(abreq + 1) + | |
185 | crypto_ablkcipher_reqsize(ctx->enc); | |
186 | ||
187 | err = crypto_authenc_genicv(areq, iv, 0); | |
188 | } | |
3c09f17c | 189 | |
a697690b | 190 | aead_request_complete(areq, err); |
3c09f17c HX |
191 | } |
192 | ||
193 | static int crypto_authenc_encrypt(struct aead_request *req) | |
194 | { | |
195 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); | |
196 | struct crypto_authenc_ctx *ctx = crypto_aead_ctx(authenc); | |
197 | struct ablkcipher_request *abreq = aead_request_ctx(req); | |
e56dd564 HX |
198 | struct crypto_ablkcipher *enc = ctx->enc; |
199 | struct scatterlist *dst = req->dst; | |
200 | unsigned int cryptlen = req->cryptlen; | |
201 | u8 *iv = (u8 *)(abreq + 1) + crypto_ablkcipher_reqsize(enc); | |
3c09f17c HX |
202 | int err; |
203 | ||
e56dd564 | 204 | ablkcipher_request_set_tfm(abreq, enc); |
3c09f17c HX |
205 | ablkcipher_request_set_callback(abreq, aead_request_flags(req), |
206 | crypto_authenc_encrypt_done, req); | |
e56dd564 HX |
207 | ablkcipher_request_set_crypt(abreq, req->src, dst, cryptlen, req->iv); |
208 | ||
209 | memcpy(iv, req->iv, crypto_aead_ivsize(authenc)); | |
3c09f17c HX |
210 | |
211 | err = crypto_ablkcipher_encrypt(abreq); | |
212 | if (err) | |
213 | return err; | |
214 | ||
e56dd564 HX |
215 | return crypto_authenc_genicv(req, iv, CRYPTO_TFM_REQ_MAY_SLEEP); |
216 | } | |
217 | ||
218 | static void crypto_authenc_givencrypt_done(struct crypto_async_request *req, | |
219 | int err) | |
220 | { | |
a697690b HX |
221 | struct aead_request *areq = req->data; |
222 | ||
e56dd564 | 223 | if (!err) { |
16161329 | 224 | struct skcipher_givcrypt_request *greq = aead_request_ctx(areq); |
e56dd564 | 225 | |
16161329 | 226 | err = crypto_authenc_genicv(areq, greq->giv, 0); |
e56dd564 HX |
227 | } |
228 | ||
a697690b | 229 | aead_request_complete(areq, err); |
e56dd564 HX |
230 | } |
231 | ||
232 | static int crypto_authenc_givencrypt(struct aead_givcrypt_request *req) | |
233 | { | |
234 | struct crypto_aead *authenc = aead_givcrypt_reqtfm(req); | |
235 | struct crypto_authenc_ctx *ctx = crypto_aead_ctx(authenc); | |
236 | struct aead_request *areq = &req->areq; | |
237 | struct skcipher_givcrypt_request *greq = aead_request_ctx(areq); | |
238 | u8 *iv = req->giv; | |
239 | int err; | |
240 | ||
241 | skcipher_givcrypt_set_tfm(greq, ctx->enc); | |
242 | skcipher_givcrypt_set_callback(greq, aead_request_flags(areq), | |
243 | crypto_authenc_givencrypt_done, areq); | |
244 | skcipher_givcrypt_set_crypt(greq, areq->src, areq->dst, areq->cryptlen, | |
245 | areq->iv); | |
246 | skcipher_givcrypt_set_giv(greq, iv, req->seq); | |
247 | ||
248 | err = crypto_skcipher_givencrypt(greq); | |
249 | if (err) | |
250 | return err; | |
251 | ||
252 | return crypto_authenc_genicv(areq, iv, CRYPTO_TFM_REQ_MAY_SLEEP); | |
3c09f17c HX |
253 | } |
254 | ||
481f34ae | 255 | static int crypto_authenc_verify(struct aead_request *req, |
e56dd564 | 256 | struct scatterlist *cipher, |
481f34ae | 257 | unsigned int cryptlen) |
3c09f17c HX |
258 | { |
259 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); | |
7c3d703f | 260 | u8 *ohash; |
3c09f17c | 261 | u8 *ihash; |
3c09f17c | 262 | unsigned int authsize; |
3c09f17c | 263 | |
e56dd564 | 264 | ohash = crypto_authenc_hash(req, CRYPTO_TFM_REQ_MAY_SLEEP, cipher, |
7c3d703f HX |
265 | cryptlen); |
266 | if (IS_ERR(ohash)) | |
267 | return PTR_ERR(ohash); | |
3c09f17c | 268 | |
7ba683a6 | 269 | authsize = crypto_aead_authsize(authenc); |
7c3d703f | 270 | ihash = ohash + authsize; |
e56dd564 | 271 | scatterwalk_map_and_copy(ihash, cipher, cryptlen, authsize, 0); |
fe70f5df | 272 | return memcmp(ihash, ohash, authsize) ? -EBADMSG: 0; |
3c09f17c HX |
273 | } |
274 | ||
e56dd564 HX |
275 | static int crypto_authenc_iverify(struct aead_request *req, u8 *iv, |
276 | unsigned int cryptlen) | |
3c09f17c | 277 | { |
e56dd564 HX |
278 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); |
279 | struct scatterlist *src = req->src; | |
280 | struct scatterlist cipher[2]; | |
281 | struct page *srcp; | |
282 | unsigned int ivsize = crypto_aead_ivsize(authenc); | |
283 | u8 *vsrc; | |
284 | ||
285 | srcp = sg_page(src); | |
286 | vsrc = PageHighMem(srcp) ? NULL : page_address(srcp) + src->offset; | |
287 | ||
288 | sg_init_table(cipher, 2); | |
289 | sg_set_buf(cipher, iv, ivsize); | |
290 | authenc_chain(cipher, src, vsrc == iv + ivsize); | |
291 | ||
292 | return crypto_authenc_verify(req, cipher, cryptlen + ivsize); | |
3c09f17c HX |
293 | } |
294 | ||
295 | static int crypto_authenc_decrypt(struct aead_request *req) | |
296 | { | |
297 | struct crypto_aead *authenc = crypto_aead_reqtfm(req); | |
298 | struct crypto_authenc_ctx *ctx = crypto_aead_ctx(authenc); | |
299 | struct ablkcipher_request *abreq = aead_request_ctx(req); | |
481f34ae HX |
300 | unsigned int cryptlen = req->cryptlen; |
301 | unsigned int authsize = crypto_aead_authsize(authenc); | |
e56dd564 | 302 | u8 *iv = req->iv; |
3c09f17c HX |
303 | int err; |
304 | ||
481f34ae HX |
305 | if (cryptlen < authsize) |
306 | return -EINVAL; | |
307 | cryptlen -= authsize; | |
308 | ||
e56dd564 | 309 | err = crypto_authenc_iverify(req, iv, cryptlen); |
3c09f17c HX |
310 | if (err) |
311 | return err; | |
312 | ||
313 | ablkcipher_request_set_tfm(abreq, ctx->enc); | |
314 | ablkcipher_request_set_callback(abreq, aead_request_flags(req), | |
e56dd564 HX |
315 | req->base.complete, req->base.data); |
316 | ablkcipher_request_set_crypt(abreq, req->src, req->dst, cryptlen, iv); | |
3c09f17c HX |
317 | |
318 | return crypto_ablkcipher_decrypt(abreq); | |
319 | } | |
320 | ||
321 | static int crypto_authenc_init_tfm(struct crypto_tfm *tfm) | |
322 | { | |
323 | struct crypto_instance *inst = (void *)tfm->__crt_alg; | |
324 | struct authenc_instance_ctx *ictx = crypto_instance_ctx(inst); | |
325 | struct crypto_authenc_ctx *ctx = crypto_tfm_ctx(tfm); | |
326 | struct crypto_hash *auth; | |
327 | struct crypto_ablkcipher *enc; | |
3c09f17c HX |
328 | int err; |
329 | ||
330 | auth = crypto_spawn_hash(&ictx->auth); | |
331 | if (IS_ERR(auth)) | |
332 | return PTR_ERR(auth); | |
333 | ||
9ffde35a | 334 | enc = crypto_spawn_skcipher(&ictx->enc); |
3c09f17c HX |
335 | err = PTR_ERR(enc); |
336 | if (IS_ERR(enc)) | |
337 | goto err_free_hash; | |
338 | ||
339 | ctx->auth = auth; | |
340 | ctx->enc = enc; | |
341 | tfm->crt_aead.reqsize = max_t(unsigned int, | |
342 | (crypto_hash_alignmask(auth) & | |
343 | ~(crypto_tfm_ctx_alignment() - 1)) + | |
7ba683a6 | 344 | crypto_hash_digestsize(auth) * 2, |
e56dd564 HX |
345 | sizeof(struct skcipher_givcrypt_request) + |
346 | crypto_ablkcipher_reqsize(enc) + | |
347 | crypto_ablkcipher_ivsize(enc)); | |
3c09f17c HX |
348 | |
349 | spin_lock_init(&ctx->auth_lock); | |
350 | ||
351 | return 0; | |
352 | ||
353 | err_free_hash: | |
354 | crypto_free_hash(auth); | |
355 | return err; | |
356 | } | |
357 | ||
358 | static void crypto_authenc_exit_tfm(struct crypto_tfm *tfm) | |
359 | { | |
360 | struct crypto_authenc_ctx *ctx = crypto_tfm_ctx(tfm); | |
361 | ||
362 | crypto_free_hash(ctx->auth); | |
363 | crypto_free_ablkcipher(ctx->enc); | |
364 | } | |
365 | ||
366 | static struct crypto_instance *crypto_authenc_alloc(struct rtattr **tb) | |
367 | { | |
9ffde35a | 368 | struct crypto_attr_type *algt; |
3c09f17c HX |
369 | struct crypto_instance *inst; |
370 | struct crypto_alg *auth; | |
371 | struct crypto_alg *enc; | |
372 | struct authenc_instance_ctx *ctx; | |
9ffde35a | 373 | const char *enc_name; |
3c09f17c HX |
374 | int err; |
375 | ||
9ffde35a HX |
376 | algt = crypto_get_attr_type(tb); |
377 | err = PTR_ERR(algt); | |
378 | if (IS_ERR(algt)) | |
3c09f17c HX |
379 | return ERR_PTR(err); |
380 | ||
9ffde35a HX |
381 | if ((algt->type ^ CRYPTO_ALG_TYPE_AEAD) & algt->mask) |
382 | return ERR_PTR(-EINVAL); | |
383 | ||
3c09f17c HX |
384 | auth = crypto_attr_alg(tb[1], CRYPTO_ALG_TYPE_HASH, |
385 | CRYPTO_ALG_TYPE_HASH_MASK); | |
386 | if (IS_ERR(auth)) | |
387 | return ERR_PTR(PTR_ERR(auth)); | |
388 | ||
9ffde35a HX |
389 | enc_name = crypto_attr_alg_name(tb[2]); |
390 | err = PTR_ERR(enc_name); | |
391 | if (IS_ERR(enc_name)) | |
3c09f17c HX |
392 | goto out_put_auth; |
393 | ||
3c09f17c HX |
394 | inst = kzalloc(sizeof(*inst) + sizeof(*ctx), GFP_KERNEL); |
395 | err = -ENOMEM; | |
396 | if (!inst) | |
9ffde35a | 397 | goto out_put_auth; |
3c09f17c HX |
398 | |
399 | ctx = crypto_instance_ctx(inst); | |
3c09f17c HX |
400 | |
401 | err = crypto_init_spawn(&ctx->auth, auth, inst, CRYPTO_ALG_TYPE_MASK); | |
402 | if (err) | |
403 | goto err_free_inst; | |
404 | ||
9ffde35a HX |
405 | crypto_set_skcipher_spawn(&ctx->enc, inst); |
406 | err = crypto_grab_skcipher(&ctx->enc, enc_name, 0, | |
407 | crypto_requires_sync(algt->type, | |
408 | algt->mask)); | |
3c09f17c HX |
409 | if (err) |
410 | goto err_drop_auth; | |
411 | ||
9ffde35a HX |
412 | enc = crypto_skcipher_spawn_alg(&ctx->enc); |
413 | ||
414 | err = -ENAMETOOLONG; | |
415 | if (snprintf(inst->alg.cra_name, CRYPTO_MAX_ALG_NAME, | |
416 | "authenc(%s,%s)", auth->cra_name, enc->cra_name) >= | |
417 | CRYPTO_MAX_ALG_NAME) | |
418 | goto err_drop_enc; | |
419 | ||
420 | if (snprintf(inst->alg.cra_driver_name, CRYPTO_MAX_ALG_NAME, | |
421 | "authenc(%s,%s)", auth->cra_driver_name, | |
422 | enc->cra_driver_name) >= CRYPTO_MAX_ALG_NAME) | |
423 | goto err_drop_enc; | |
424 | ||
425 | inst->alg.cra_flags = CRYPTO_ALG_TYPE_AEAD; | |
426 | inst->alg.cra_flags |= enc->cra_flags & CRYPTO_ALG_ASYNC; | |
3c09f17c HX |
427 | inst->alg.cra_priority = enc->cra_priority * 10 + auth->cra_priority; |
428 | inst->alg.cra_blocksize = enc->cra_blocksize; | |
e29bc6ad | 429 | inst->alg.cra_alignmask = auth->cra_alignmask | enc->cra_alignmask; |
3c09f17c HX |
430 | inst->alg.cra_type = &crypto_aead_type; |
431 | ||
c2c61f51 | 432 | inst->alg.cra_aead.ivsize = enc->cra_ablkcipher.ivsize; |
7ba683a6 HX |
433 | inst->alg.cra_aead.maxauthsize = auth->cra_type == &crypto_hash_type ? |
434 | auth->cra_hash.digestsize : | |
5f7082ed HX |
435 | auth->cra_type ? |
436 | __crypto_shash_alg(auth)->digestsize : | |
7ba683a6 | 437 | auth->cra_digest.dia_digestsize; |
3c09f17c HX |
438 | |
439 | inst->alg.cra_ctxsize = sizeof(struct crypto_authenc_ctx); | |
440 | ||
441 | inst->alg.cra_init = crypto_authenc_init_tfm; | |
442 | inst->alg.cra_exit = crypto_authenc_exit_tfm; | |
443 | ||
444 | inst->alg.cra_aead.setkey = crypto_authenc_setkey; | |
445 | inst->alg.cra_aead.encrypt = crypto_authenc_encrypt; | |
446 | inst->alg.cra_aead.decrypt = crypto_authenc_decrypt; | |
e56dd564 | 447 | inst->alg.cra_aead.givencrypt = crypto_authenc_givencrypt; |
3c09f17c HX |
448 | |
449 | out: | |
3c09f17c HX |
450 | crypto_mod_put(auth); |
451 | return inst; | |
452 | ||
9ffde35a HX |
453 | err_drop_enc: |
454 | crypto_drop_skcipher(&ctx->enc); | |
3c09f17c HX |
455 | err_drop_auth: |
456 | crypto_drop_spawn(&ctx->auth); | |
457 | err_free_inst: | |
458 | kfree(inst); | |
9ffde35a | 459 | out_put_auth: |
3c09f17c HX |
460 | inst = ERR_PTR(err); |
461 | goto out; | |
462 | } | |
463 | ||
464 | static void crypto_authenc_free(struct crypto_instance *inst) | |
465 | { | |
466 | struct authenc_instance_ctx *ctx = crypto_instance_ctx(inst); | |
467 | ||
9ffde35a | 468 | crypto_drop_skcipher(&ctx->enc); |
3c09f17c HX |
469 | crypto_drop_spawn(&ctx->auth); |
470 | kfree(inst); | |
471 | } | |
472 | ||
473 | static struct crypto_template crypto_authenc_tmpl = { | |
474 | .name = "authenc", | |
475 | .alloc = crypto_authenc_alloc, | |
476 | .free = crypto_authenc_free, | |
477 | .module = THIS_MODULE, | |
478 | }; | |
479 | ||
480 | static int __init crypto_authenc_module_init(void) | |
481 | { | |
482 | return crypto_register_template(&crypto_authenc_tmpl); | |
483 | } | |
484 | ||
485 | static void __exit crypto_authenc_module_exit(void) | |
486 | { | |
487 | crypto_unregister_template(&crypto_authenc_tmpl); | |
488 | } | |
489 | ||
490 | module_init(crypto_authenc_module_init); | |
491 | module_exit(crypto_authenc_module_exit); | |
492 | ||
493 | MODULE_LICENSE("GPL"); | |
494 | MODULE_DESCRIPTION("Simple AEAD wrapper for IPsec"); |